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111 results on '"R. Wheadon"'

1. Search for the neutron-rich hypernucleus 9{\Lambda}He

Author: Agnello, M., Benussi, L., Bertani, M., Bhang, H. C., Bonomi, G., Botta, E., Bregant, M., Bressani, T., Bufalino, S., Busso, L., Calvo, D., Camerini, P., Dalena, B., De Mori, F., Erasmo, G. D, Fabbri, F. L., Feliciello, A., Filippi, A., Fiore, E. M., Fontana, A., Fujioka, H., Genova, P., Gianotti, P., Grion, N., Lucherini, V., Marcello, S., Mirfakhrai, N., Moia, F., Morra, O., Nagae, T., Outa, H., Pantaleo, A., Paticchio, V., Piano, S., Rui, R., Simonetti, G., Zenoni, R. Wheadon A., and Gal, A.
Subjects: Nuclear Experiment
Abstract: Search for the neutron-rich hypernucleus 9LHe is reported by the FINUDA experiment at DAFNE, INFN-LNF, studying (pi+, pi-) pairs in coincidence from the K-stop + 9Be --> 9LHe + pi+ production reaction followed by 9LHe --> 9Li + pi- weak decay. An upper limit of the production rate of 9LHe undergoing this two-body pi- decay is determined to be (2.3 +/- 1.9) 10-6/K-stop at 90% confidence level., Comment: 4 pages, 3 figures
Published: 2012
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2. Validation of high voltage power supplies for the 1-inch photomultipliers of AugerPrime, the Pierre Auger Observatory upgrade

Author: G.A. Anastasi, M. Buscemi, M. Aglietta, R. Caruso, A. Castellina, S. Costa, S. Gallian, A. Gorgi, N. Guardone, C. Lombardo, R. Wheadon, A. Zampieri, Anastasi G.A., Buscemi M., Aglietta M., Caruso R., Castellina A., Costa S., Gallian S., Gorgi A., Guardone N., Lombardo C., Wheadon R., and Zampieri A.
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Physics - Instrumentation and Detectors, Large detector systems for particle and astroparticle physics, Cherenkov detectors, Settore FIS/01 - Fisica Sperimentale, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Detector design and construction technologies and materials, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation, Voltage distributions, Mathematical Physics
Abstract: In the framework of the upgrade of the Pierre Auger Observatory, a new high voltage module is being employed for the power supply of the 1-inch photomultiplier added to each water-Cherenkov detector of the surface array with the aim of increasing the dynamic range of the measurements. This module is located in a dedicated box near the electronics and comprises a low consumption DC-DC converter hosted inside an aluminum box. All the modules have undergone specific tests to verify their reliability in the extreme environmental conditions of the Argentinian pampa. In this paper, we describe the validation procedure and the facility developed to this aim. The successful results of the tests on the HVPS modules are presented and discussed., 11 pages, 9 figures, published on JINST as technical report
Published: 2022

3. Performance of the readout system of the ALICE Zero Degree Calorimeters in LHC Run 3

Author: P Cortese, M Arba, G Cotto, G Dellacasa, N De Marco, P De Remigis, D Falchieri, A Ferretti, L Lombardo, P Mereu, L Micheletti, C Puggioni, C Oppedisano, L Quaglia, S Siddhanta, L Terlizzi, M Tuveri, and R Wheadon
Subjects: History, Computer Science Applications, Education
Abstract: The ALICE Zero Degree Calorimeters (ZDC) provide information about event geometry in heavy-ion collisions through the detection of spectator nucleons and allow to estimate the delivered luminosity. They are also very useful in p–A collisions, allowing an unbiased estimation of collision centrality. The Run 3 operating conditions will involve a tenfold increase in instantaneous luminosity in heavy-ion collisions, with event rates that, taking into account the different processes, could reach 5 MHz in the ZDCs. The challenges posed by this demanding environment lead to a redesign of the readout system and to the transition to a continuous acquisition. The new system is based on 12 bit, 1 Gsps FMC digitizers that will continuously sample the 26 ZDC channels. Triggering, pedestal estimation and luminosity measurements will be performed on FPGA directly connected to the front-end. The new readout system and the performances foreseen in Run 3 are presented.
Published: 2022

4. Technical design report for the endcap disc DIRC

Author: F Davì, W Erni, B Krusche, M Steinacher, N Walford, H Liu, Z Liu, B Liu, X Shen, C Wang, J Zhao, M Albrecht, T Erlen, F Feldbauer, M Fink, V Freudenreich, M Fritsch, F H Heinsius, T Held, T Holtmann, I Keshk, H Koch, B Kopf, M Kuhlmann, M Kümmel, S Leiber, P Musiol, A Mustafa, M Pelizäus, A Pitka, G Reicherz, M Richter, C Schnier, T Schröder, S Sersin, L Sohl, C Sowa, M Steinke, T Triffterer, U Wiedner, R Beck, C Hammann, J Hartmann, B Ketzer, M Kube, M Rossbach, C Schmidt, R Schmitz, U Thoma, M Urban, A Bianconi, M Bragadireanu, D Pantea, W Czyzycki, M Domagala, G Filo, J Jaworowski, M Krawczyk, E Lisowski, F Lisowski, M Michałk, J Płażek, K Korcyl, A Kozela, P Kulessa, P Lebiedowicz, K Pysz, W Schäfer, A Szczurek, T Fiutowski, M Idzik, B Mindur, K Swientek, J Biernat, B Kamys, S Kistryn, G Korcyl, W Krzemien, A Magiera, P Moskal, W Przygoda, Z Rudy, P Salabura, J Smyrski, P Strzempek, A Wronska, I Augustin, R Böhm, I Lehmann, D Nicmorus Marinescu, L Schmitt, V Varentsov, M Al-Turany, A Belias, H Deppe, N Divani Veis, R Dzhygadlo, H Flemming, A Gerhardt, K Götzen, R Karabowicz, U Kurilla, D Lehmann, S Löchner, J Lühning, U Lynen, S Nakhoul, H Orth, K Peters, T Saito, G Schepers, C J Schmidt, C Schwarz, J Schwiening, A Täschner, M Traxler, B Voss, P Wieczorek, A Wilms, V Abazov, G Alexeev, V A Arefiev, V Astakhov, M Yu Barabanov, B V Batyunya, V Kh Dodokhov, A Efremov, A Fechtchenko, A Galoyan, G Golovanov, E K Koshurnikov, Y Yu Lobanov, V I Lobanov, V Malyshev, A G Olshevskiy, A A Piskun, A Samartsev, M G Sapozhnikov, N B Skachkov, A N Skachkova, E A Strokovsky, V Tokmenin, V Uzhinsky, A Verkheev, A Vodopianov, N I Zhuravlev, A Zinchenko, D Branford, D Glazier, D Watts, M Böhm, W Eyrich, A Lehmann, D Miehling, M Pfaffinger, S Stelter, F Uhlig, S Dobbs, K Seth, A Tomaradze, T Xiao, D Bettoni, A Ali, A Hamdi, M Krebs, F Nerling, V Akishina, S Gorbunov, I Kisel, G Kozlov, M Pugach, M Zyzak, N Bianchi, P Gianotti, C Guaraldo, V Lucherini, G Bracco, S Bodenschatz, K T Brinkmann, V Di Pietro, S Diehl, V Dormenev, M Düren, E Etzelmüller, K Föhl, M Galuska, T Geßler, E Gutz, C Hahn, A Hayrapetyan, M Kesselkaul, W Kühn, T Kuske, J S Lange, Y Liang, O Merle, V Metag, M Moritz, M Nanova, R Novotny, T Quagli, A Riccardi, J Rieke, M Schmidt, R Schnell, H Stenzel, M Strickert, U Thöring, T Wasem, B Wohlfahrt, H G Zaunick, E Tomasi-Gustafsson, D Ireland, G Rosner, B Seitz, P N Deepak, A Kulkarni, A Apostolou, M Babai, M Kavatsyuk, H Loehner, J Messchendorp, P Schakel, M Tiemens, J C van der Weele, S Vejdani, K Dutta, K Kalita, H Sohlbach, M Bai, L Bianchi, M Büscher, A Derichs, R Dosdall, A Erven, V Fracassi, A Gillitzer, F Goldenbaum, D Grunwald, L Jokhovets, G Kemmerling, H Kleines, A Lai, A Lehrach, M Mikirtychyants, S Orfanitski, D Prasuhn, E Prencipe, J Pütz, J Ritman, E Rosenthal, S Schadmand, T Sefzick, V Serdyuk, G Sterzenbach, T Stockmanns, P Wintz, P Wüstner, H Xu, Y Zhou, Z Li, X Ma, V Rigato, L Isaksson, P Achenbach, A Aycock, O Corell, A Denig, M Distler, M Hoek, W Lauth, H Merkel, U Müller, J Pochodzalla, S Sanchez, S Schlimme, C Sfienti, M Thiel, M Zambrana, H Ahmadi, S Ahmed, S Bleser, L Capozza, M Cardinali, A Dbeyssi, A Ehret, B Fröhlich, P Grasemann, S Haasler, D Izard, J Jorge, D Khaneft, R Klasen, R Kliemt, J Köhler, H H Leithoff, D Lin, F Maas, S Maldaner, M Michel, M C Mora Espí, C Morales Morales, C Motzko, O Noll, S Pflüger, D Rodríguez Piñeiro, M Steinen, E Walaa, S Wolff, I Zimmermann, A Fedorov, M Korzhik, O Missevitch, P Balanutsa, V Chernetsky, A Demekhin, A Dolgolenko, P Fedorets, A Gerasimov, V Goryachev, D Y Kirin, V A Matveev, A V Stavinskiy, A Balashoff, A Boukharov, O Malyshev, I Marishev, V Chandratre, V Datar, V Jha, H Kumawat, A K Mohanty, A Parmar, A K Rai, B Roy, G Sonika, C Fritzsch, S Grieser, A K Hergemöller, B Hetz, N Hüsken, A Khoukaz, J P Wessels, C Herold, K Khosonthongkee, C Kobdaj, A Limphirat, P Srisawad, Y Yan, A E Blinov, S Kononov, E A Kravchenko, E Antokhin, M Barnyakov, A Yu Barnyakov, K Beloborodov, V E Blinov, V S Bobrovnikov, I A Kuyanov, A P Onuchin, S Pivovarov, E Pyata, S Serednyakov, Y Tikhonov, R Kunne, D Marchand, B Ramstein, J van de Wiele, Y Wang, G Boca, V Burian, M Finger, A Nikolovova, M Pesek, M Peskova, M Pfeffer, I Prochazka, M Slunecka, P Gallus, V Jary, J Novy, M Tomasek, M Virius, V Vrba, V Abramov, N Belikov, S Bukreeva, A Davidenko, A Derevschikov, Y Goncharenko, V Grishin, V Kachanov, V Kormilitsin, A Levin, Y Melnik, N Minaev, V Mochalov, D Morozov, L Nogach, S Poslavskiy, A Ryazantsev, S Ryzhikov, P Semenov, I Shein, A Uzunian, A Vasiliev, A Yakutin, U Roy, B Yabsley, S Belostotski, G Gavrilov, A Izotov, S Manaenkov, O Miklukho, D Veretennikov, A Zhdanov, T Bäck, B Cederwall, K Makonyi, M Preston, P E Tegner, D Wölbing, S Godre, M P Bussa, S Marcello, S Spataro, F Iazzi, R Introzzi, A Lavagno, D Calvo, P De Remigis, A Filippi, G Mazza, A Rivetti, R Wheadon, A Martin, H Calen, W Ikegami Andersson, T Johansson, A Kupsc, P Marciniewski, M Papenbrock, J Pettersson, J Regina, K Schönning, M Wolke, J Diaz, V Pothodi Chackara, A Chlopik, G Kesik, D Melnychuk, B Slowinski, A Trzcinski, M Wojciechowski, S Wronka, B Zwieglinski, P Bühler, J Marton, D Steinschaden, K Suzuki, E Widmann, S Zimmermann, and J Zmeskal
Subjects: Subatomär fysik, Nuclear and High Energy Physics, PANDA, Subatomic Physics, Acceleratorfysik och instrumentering, technical design report, particle identification, Accelerator Physics and Instrumentation, Cherenkov detector
Abstract: PANDA (anti-proton annihiliation at Darmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. It is going to address fundamental questions of hadron physics and quantum chromodynamics using cooled antiproton beams with a high intensity and and momenta between 1.5 and 15 GeV/c. PANDA is designed to reach a maximum luminosity of 2 × 1032 cm−2 s. Most of the physics programs require an excellent particle identification (PID). The PID of hadronic states at the forward endcap of the target spectrometer will be done by a fast and compact Cherenkov detector that uses the detection of internally reflected Cherenkov light (DIRC) principle. It is designed to cover the polar angle range from 5° to 22° and to provide a separation power for the separation of charged pions and kaons up to 3 standard deviations (s.d.) for particle momenta up to 4 GeV/c in order to cover the important particle phase space. This document describes the technical design and the expected performance of the novel PANDA disc DIRC detector that has not been used in any other high energy physics experiment before. The performance has been studied with Monte-Carlo simulations and various beam tests at DESY and CERN. The final design meets all PANDA requirements and guarantees sufficient safety margins.
Published: 2022

5. A 64 channels ASIC for the readout of the silicon strip detectors of the PANDA micro-vertex detector

Author: G. Mazza, D. Calvo, F. Cossio, P. De Remigis, M. Mignone, R. Wheadon, L. Silvestrin, and M. Tessaro
Subjects: Instrumentation, Mathematical Physics
Abstract: The ToASt ASIC is a 64 channel integrated circuit designed for the readout of the double-sided silicon strip sensors that will equip the micro-vertex detector of the PANDA experiment. The ToASt ASIC operates with a 160 MHz clock, which defines also the time resolution. A common time stamp is distributed to all channels to provide a common time reference for time of arrival and time over threshold measurements. Two 160 Mb/s serial lines provide the interface to the data concentrator. ToASt is implemented in a commercial 110 nm CMOS technology with triplicated logic to protect against single event upsets.
Published: 2023
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6. A radiation tolerant 12 bit, 160 MS/s data conversion and transmission ASIC for the CMS electromagnetic calorimeter

Author: G. Mazza, S. Argirò, G. Dellacasa, M. Mignone, D. Soldi, J. Varela, and R. Wheadon
Subjects: Hardware_INTEGRATEDCIRCUITS, Hardware_ARITHMETICANDLOGICSTRUCTURES, Instrumentation, Mathematical Physics
Abstract: The readout electronics for the CMS electromagnetic calorimeter is undergoing a re-design in order to cope with the LHC ugrade. In particular, a fourfold increase in the sampling frequency (from 40 to 160 MS/s) is required. Therefore a new readout ASIC has been developed. The ASIC, named LiTE-DTU, is designed in a CMOS 65 nm technology. The LiTE-DTU embeds two 12 bit, 160 MS/s ADCs, a time window based sample selection, lossless data compression and 1.28 Gb/s serialization. An on-chip PLL provides the 1.28 GHz clock required by the ADCs and the serializers from the 160 MHz clock.
Published: 2022
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7. In-vivo inter-fractional monitoring in particle therapy with the INSIDE in-beam PET

Author: V. Ferrero, G. Battistoni, N. Belcari, A. Berti, G. Bisogni, P. Cerello, M. Ciocca, M. De Simoni, M. Donetti, Y. Dong, I. Egidi, A. Embriaco, E. Fiorina, M. Fischetti, G. Franciosini, A. Kraan, G. Giraudo, F. Laruina, C. Luongo, M. Magi, E. Malekzadeh, C. Mancini-Terracciano, M. Marafini, I. Mattei, E. Mazzoni, R. Mirabelli, M. Morrocchi, S. Muraro, A. Patera, V. Patera, F. Pennazio, A. Retico, A. Rivetti, M.D. Rolo, V. Rosso, A. Sarti, A. Schiavi, A. Sciubba, E. Solfaroli Camillocci, G. Sportelli, S. Tampellini, M. Toppi, G. Traini, A. Trigilio, S.M. Valle, F. Valvo, V. Vitolo, and R. Wheadon
Subjects: Biophysics, General Physics and Astronomy, Radiology, Nuclear Medicine and imaging, General Medicine
Published: 2021
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8. Technical design report for the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector

Author: B Singh, W Erni, B Krusche, M Steinacher, N Walford, B Liu, H Liu, Z Liu, X Shen, C Wang, J Zhao, M Albrecht, T Erlen, F Feldbauer, M Fink, M Fritsch, J Haase, F H Heinsius, T Held, T Holtmann, I Keshk, H Koch, B Kopf, M Kuhlmann, M Kümmel, S Leiber, M Mikirtychyants, P Musiol, A Mustafa, M Pelizäus, A Pitka, J Pychy, M Richter, C Schnier, T Schröder, C Sowa, M Steinke, T Triffterer, U Wiedner, M Ball, R Beck, C Hammann, B Ketzer, M Kube, P Mahlberg, M Rossbach, C Schmidt, R Schmitz, U Thoma, M Urban, D Walther, C Wendel, A Wilson, A Bianconi, M Bragadireanu, D Pantea, B Patel, W Czyzycki, M Domagala, G Filo, J Jaworowski, M Krawczyk, E Lisowski, F Lisowski, M Michałek, P Poznański, J Płażek, K Korcyl, A Kozela, P Kulessa, P Lebiedowicz, K Pysz, W Schäfer, A Szczurek, T Fiutowski, M Idzik, B Mindur, K Swientek, J Biernat, B Kamys, S Kistryn, G Korcyl, W Krzemien, A Magiera, P Moskal, A Pyszniak, Z Rudy, P Salabura, J Smyrski, P Strzempek, A Wronska, I Augustin, R Böhm, I Lehmann, D Nicmorus Marinescu, L Schmitt, V Varentsov, A Ali, M Al-Turany, A Belias, H Deppe, N Divani Veis, R Dzhygadlo, H Flemming, A Gerhardt, K Götzen, A Gromliuk, L Gruber, R Hohler, G Kalicy, R Karabowicz, R Kliemt, M Krebs, U Kurilla, D Lehmann, S Löchner, J Lühning, U Lynen, F Nerling, H Orth, M Patsyuk, K Peters, T Saito, G Schepers, C J Schmidt, C Schwarz, J Schwiening, A Täschner, M Traxler, C Ugur, B Voss, P Wieczorek, A Wilms, M Zühlsdorf, V Abazov, G Alexeev, V A Arefiev, V Astakhov, M Yu Barabanov, B V Batyunya, Y Davydov, V Kh Dodokhov, A Efremov, A Fechtchenko, A G Fedunov, A Galoyan, S Grigoryan, E K Koshurnikov, Y Yu Lobanov, V I Lobanov, A F Makarov, L V Malinina, V Malyshev, A G Olshevskiy, E Perevalova, A A Piskun, T Pocheptsov, G Pontecorvo, V Rodionov, Y Rogov, R Salmin, A Samartsev, M G Sapozhnikov, G Shabratova, N B Skachkov, A N Skachkova, E A Strokovsky, M Suleimanov, R Teshev, V Tokmenin, V Uzhinsky, A Vodopianov, S A Zaporozhets, N I Zhuravlev, A Zinchenko, D Branford, D Glazier, D Watts, M Böhm, A Britting, W Eyrich, A Lehmann, M Pfaffinger, F Uhlig, S Dobbs, K Seth, A Tomaradze, T Xiao, D Bettoni, V Carassiti, A Cotta Ramusino, P Dalpiaz, A Drago, E Fioravanti, I Garzia, M Savrie, V Akishina, S Gorbunov, I Kisel, G Kozlov, M Pugach, M Zyzak, P Gianotti, C Guaraldo, V Lucherini, A Bersani, G Bracco, M Macri, R F Parodi, K Biguenko, K T Brinkmann, V Di Pietro, S Diehl, V Dormenev, M Düren, E Etzelmüller, K Föhl, M Galuska, E Gutz, C Hahn, A Hayrapetyan, M Kesselkaul, K Kreutzfeldt, W Kühn, T Kuske, J S Lange, Y Liang, V Metag, M Moritz, M Nanova, R Novotny, T Quagli, S Reiter, A Riccardi, J Rieke, C Rosenbaum, M Schmidt, R Schnell, H Stenzel, U Thöring, M N Wagner, T Wasem, B Wohlfahrt, H G Zaunick, E Tomasi-Gustafsson, D Ireland, G Rosner, B Seitz, P N Deepak, A Kulkarni, A Apostolou, M Babai, M Kavatsyuk, P J Lemmens, M Lindemulder, H Loehner, J Messchendorp, P Schakel, H Smit, M Tiemens, J C van der Weele, R Veenstra, S Vejdani, K Dutta, K Kalita, A Kumar, A Roy, H Sohlbach, M Bai, L Bianchi, M Büscher, L Cao, A Cebulla, R Dosdall, A Erven, V Fracassi, A Gillitzer, F Goldenbaum, D Grunwald, A Herten, Q Hu, L Jokhovets, G Kemmerling, H Kleines, A Lai, A Lehrach, R Nellen, H Ohm, S Orfanitski, D Prasuhn, E Prencipe, J Pütz, J Ritman, E Rosenthal, S Schadmand, T Sefzick, V Serdyuk, G Sterzenbach, T Stockmanns, P Wintz, P Wüstner, H Xu, S Li, Z Li, Z Sun, V Rigato, L Isaksson, P Achenbach, A Aycock, O Corell, A Denig, M Distler, M Hoek, A Karavdina, W Lauth, H Merkel, U Müller, J Pochodzalla, S Sanchez, S Schlimme, C Sfienti, M Thiel, H Ahmadi, null S Ahmed, S Bleser, L Capozza, M Cardinali, A Dbeyssi, M Deiseroth, A Ehret, B Fröhlich, D Kang, D Khaneft, R Klasen, H H Leithoff, D Lin, F Maas, S Maldaner, M Martínez, M Michel, M C Mora Espí, C Morales Morales, C Motzko, O Noll, S Pflüger, D Rodríguez Piñeiro, A Sanchez-Lorente, M Steinen, R Valente, M Zambrana, I Zimmermann, A Fedorov, M Korjik, O Missevitch, A Balashoff, A Boukharov, O Malyshev, I Marishev, P Balanutsa, V Balanutsa, V Chernetsky, A Demekhin, A Dolgolenko, P Fedorets, A Gerasimov, V Goryachev, V Chandratre, V Datar, D Dutta, V Jha, H Kumawat, A K Mohanty, A Parmar, A K Rai, B Roy, G Sonika, C Fritzsch, S Grieser, A K Hergemöller, B Hetz, N Hüsken, A Khoukaz, J P Wessels, K Khosonthongkee, C Kobdaj, A Limphirat, P Srisawad, Y Yan, E Antokhin, A Yu Barnyakov, M Barnyakov, K Beloborodov, V E Blinov, V S Bobrovnikov, I A Kuyanov, K Martin, A P Onuchin, S Pivovarov, E Pyata, S Serednyakov, A Sokolov, Y Tikhonov, A E Blinov, S Kononov, E A Kravchenko, E Atomssa, R Kunne, D Marchand, B Ramstein, J van de Wiele, Y Wang, G Boca, S Costanza, P Genova, P Montagna, A Rotondi, M Bodlak, M Finger, A Nikolovova, M Pesek, M Peskova, M Pfeffer, I Prochazka, M Slunecka, P Gallus, V Jary, J Novy, M Tomasek, M Virius, V Vrba, V Abramov, N Belikov, S Bukreeva, A Davidenko, A Derevschikov, Y Goncharenko, V Grishin, V Kachanov, V Kormilitsin, A Levin, Y Melnik, N Minaev, V Mochalov, D Morozov, L Nogach, S Poslavskiy, A Ryazantsev, S Ryzhikov, P Semenov, I Shein, A Uzunian, A Vasiliev, A Yakutin, U Roy, B Yabsley, S Belostotski, G Gavrilov, A Izotov, S Manaenkov, O Miklukho, D Veretennikov, A Zhdanov, K Makonyi, M Preston, P E Tegner, D Wölbing, T Bäck, B Cederwall, S Godre, F Balestra, F Iazzi, R Introzzi, A Lavagno, J Olave, A Amoroso, M P Bussa, L Busso, M Destefanis, L Fava, L Ferrero, M Greco, J Hu, L Lavezzi, M Maggiora, G Maniscalco, S Marcello, S Sosio, S Spataro, D Calvo, S Coli, P De Remigis, A Filippi, G Giraudo, S Lusso, G Mazza, M Mignone, A Rivetti, R Wheadon, R Birsa, F Bradamante, A Bressan, A Martin, H Calen, W Ikegami Andersson, T Johansson, A Kupsc, P Marciniewski, M Papenbrock, J Pettersson, K Schönning, M Wolke, B Galnander, J Diaz, V Pothodi Chackara, A Chlopik, G Kesik, D Melnychuk, B Slowinski, A Trzcinski, M Wojciechowski, S Wronka, B Zwieglinski, P Bühler, J Marton, D Steinschaden, K Suzuki, E Widmann, S Zimmermann, and J Zmeskal
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Hadron, Detector, Barrel (horology), 7. Clean energy, 01 natural sciences, Ring-imaging Cherenkov detector, Particle identification, Charged particle, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, ddc:530, 010306 general physics, Nuclear Experiment
Abstract: The $\overline{{\rm{P}}}\mathrm{ANDA}$ (anti-Proton ANnihiliation at DArmstadt) experiment will be one of the four flagship experiments at the new international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. $\overline{{\rm{P}}}\mathrm{ANDA}$ will address fundamental questions of hadron physics and quantum chromodynamics using high-intensity cooled antiproton beams with momenta between 1.5 and 15 GeV/c and a design luminosity of up to 2 × 1032 cm−2 s−1. Excellent particle identification (PID) is crucial to the success of the $\overline{{\rm{P}}}\mathrm{ANDA}$ physics program. Hadronic PID in the barrel region of the target spectrometer will be performed by a fast and compact Cherenkov counter using the detection of internally reflected Cherenkov light (DIRC) technology. It is designed to cover the polar angle range from 22° to 140° and will provide at least 3 standard deviations (s.d.) π/K separation up to 3.5 GeV/c, matching the expected upper limit of the final state kaon momentum distribution from simulation. This documents describes the technical design and the expected performance of the $\overline{{\rm{P}}}\mathrm{ANDA}$ Barrel DIRC detector. The design is based on the successful BaBar DIRC with several key improvements. The performance and system cost were optimized in detailed detector simulations and validated with full system prototypes using particle beams at GSI and CERN. The final design meets or exceeds the PID goal of clean π/K separation with at least 3 s.d. over the entire phase space of charged kaons in the Barrel DIRC.
Published: 2019
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9. Study of doubly strange systems using stored antiprotons

Author: B. Singh, W. Erni, B. Krusche, M. Steinacher, N. Walford, B. Liu, H. Liu, Z. Liu, X. Shen, C. Wang, J. Zhao, M. Albrecht, T. Erlen, M. Fink, F. Heinsius, T. Held, T. Holtmann, S. Jasper, I. Keshk, H. Koch, B. Kopf, M. Kuhlmann, M. Kümmel, S. Leiber, M. Mikirtychyants, P. Musiol, A. Mustafa, M. Pelizäus, J. Pychy, M. Richter, C. Schnier, T. Schröder, C. Sowa, M. Steinke, T. Triffterer, U. Wiedner, M. Ball, R. Beck, C. Hammann, B. Ketzer, M. Kube, P. Mahlberg, M. Rossbach, C. Schmidt, R. Schmitz, U. Thoma, M. Urban, D. Walther, C. Wendel, A. Wilson, A. Bianconi, M. Bragadireanu, M. Caprini, D. Pantea, B. Patel, W. Czyzycki, M. Domagala, G. Filo, J. Jaworowski, M. Krawczyk, E. Lisowski, F. Lisowski, M. Michałek, P. Poznański, J. Płażek, K. Korcyl, A. Kozela, P. Kulessa, P. Lebiedowicz, K. Pysz, W. Schäfer, A. Szczurek, T. Fiutowski, M. Idzik, B. Mindur, D. Przyborowski, K. Swientek, J. Biernat, B. Kamys, S. Kistryn, G. Korcyl, W. Krzemien, A. Magiera, P. Moskal, A. Psyzniak, Z. Rudy, P. Salabura, J. Smyrski, P. Strzempek, A. Wronska, I. Augustin, R. Böhm, I. Lehmann, D. Nicmorus Marinescu, L. Schmitt, V. Varentsov, M. Al-Turany, A. Belias, H. Deppe, R. Dzhygadlo, A. Ehret, H. Flemming, A. Gerhardt, K. Götzen, A. Gromliuk, L. Gruber, R. Karabowicz, R. Kliemt, M. Krebs, U. Kurilla, D. Lehmann, S. Löchner, J. Lühning, U. Lynen, H. Orth, M. Patsyuk, K. Peters, T. Saito, G. Schepers, C.J. Schmidt, C. Schwarz, J. Schwiening, A. Täschner, M. Traxler, C. Ugur, B. Voss, P. Wieczorek, A. Wilms, M. Zühlsdorf, V.M. Abazov, G. Alexeev, A. Arefiev, V.I. Astakhov, M.Yu. Barabanov, B.V. Batyunya, Yu.I. Davydov, V.Kh. Dodokhov, A.A. Efremov, A. Fechtchenko, A.G. Fedunov, A. Galoyan, S. Grigoryan, E.K. Koshurnikov, V.I. Lobanov, Y.Yu. Lobanov, A.F. Makarov, L.V. Malinina, V.L. Malyshev, A. Olshevskiy, E. Perevalova, A.A. Piskun, T. Pocheptsov, G. Pontecorvo, V. Rodionov, Y. Rogov, R. Salmin, A. Samartsev, M.G. Sapozhnikov, G. Shabratova, N.B. Skachkov, A.N. Skachkova, E.A. Strokovsky, M. Suleimanov, R. Teshev, V. Tokmenin, V. Uzhinsky, A. Vodopyanov, S.A. Zaporozhets, N.I. Zhuravlev, A.G. Zorin, D. Branford, D. Glazier, D. Watts, M. Böhm, A. Britting, W. Eyrich, A. Lehmann, M. Pfaffinger, F. Uhlig, S. Dobbs, K. Seth, A. Tomaradze, T. Xiao, D. Bettoni, V. Carassiti, A. Cotta Ramusino, P. Dalpiaz, A. Drago, E. Fioravanti, I. Garzia, M. Savriè, V. Akishina, I. Kisel, G. Kozlov, M. Pugach, M. Zyzak, P. Gianotti, C. Guaraldo, V. Lucherini, A. Bersani, G. Bracco, M. Macri, R.F. Parodi, K. Biguenko, K. Brinkmann, V. Di Pietro, S. Diehl, V. Dormenev, P. Drexler, M. Düren, E. Etzelmüller, M. Galuska, E. Gutz, C. Hahn, A. Hayrapetyan, M. Kesselkaul, W. Kühn, T. Kuske, J.S. Lange, Y. Liang, V. Metag, M. Nanova, S. Nazarenko, R. Novotny, T. Quagli, S. Reiter, J. Rieke, C. Rosenbaum, M. Schmidt, R. Schnell, H. Stenzel, U. Thöring, M. Ullrich, M.N. Wagner, T. Wasem, B. Wohlfarth, H. Zaunick, D. Ireland, G. Rosner, B. Seitz, P.N. Deepak, A. Kulkarni, A. Apostolou, M. Babai, M. Kavatsyuk, P. Lemmens, M. Lindemulder, H. Loehner, J. Messchendorp, P. Schakel, H. Smit, M. Tiemens, J.C. van der Weele, R. Veenstra, S. Vejdani, K. Dutta, K. Kalita, A. Kumar, A. Roy, H. Sohlbach, M. Bai, L. Bianchi, M. Büscher, L. Cao, A. Cebulla, R. Dosdall, A. Gillitzer, F. Goldenbaum, D. Grunwald, A. Herten, Q. Hu, G. Kemmerling, H. Kleines, A. Lehrach, R. Nellen, H. Ohm, S. Orfanitski, D. Prasuhn, E. Prencipe, J. Pütz, J. Ritman, S. Schadmand, T. Sefzick, V. Serdyuk, G. Sterzenbach, T. Stockmanns, P. Wintz, P. Wüstner, H. Xu, A. Zambanini, S. Li, Z. Li, Z. Sun, V. Rigato, L. Isaksson, P. Achenbach, O. Corell, A. Denig, M. Distler, M. Hoek, A. Karavdina, W. Lauth, H. Merkel, U. Müller, J. Pochodzalla, S. Schlimme, C. Sfienti, M. Thiel, H. Ahmadi, S. Ahmed, S. Bleser, L. Capozza, M. Cardinali, A. Dbeyssi, M. Deiseroth, F. Feldbauer, M. Fritsch, B. Fröhlich, P. Jasinski, D. Kang, D. Khaneft, R. Klasen, H.H. Leithoff, D. Lin, F. Maas, S. Maldaner, M. Martìnez Rojo, M. Marta, M. Michel, M.C. Mora Espì, C. Morales Morales, C. Motzko, F. Nerling, O. Noll, S. Pflüger, A. Pitka, D. Rodríguez Piñeiro, A. Sanchez Lorente, M. Steinen, R. Valente, T. Weber, M. Zambrana, I. Zimmermann, A. Fedorov, M. Korjik, O. Missevitch, A. Boukharov, O. Malyshev, I. Marishev, P. Balanutsa, V. Balanutsa, V. Chernetsky, A. Demekhin, A. Dolgolenko, P. Fedorets, A. Gerasimov, V. Goryachev, V. Chandratre, V. Datar, D. Dutta, V. Jha, H. Kumawat, A.K. Mohanty, A. Parmar, B. Roy, G. Sonika, C. Fritzsch, S. Grieser, A.K. Hergemöller, B. Hetz, N. Hüsken, A. Khoukaz, J.P. Wessels, K. Khosonthongkee, C. Kobdaj, A. Limphirat, P. Srisawad, Y. Yan, M. Barnyakov, A.Yu. Barnyakov, K. Beloborodov, A.E. Blinov, V.E. Blinov, V.S. Bobrovnikov, S. Kononov, E.A. Kravchenko, I.A. Kuyanov, K. Martin, A.P. Onuchin, S. Serednyakov, A. Sokolov, Y. Tikhonov, E. Atomssa, R. Kunne, D. Marchand, B. Ramstein, J. Van de Wiele, Y. Wang, G. Boca, S. Costanza, P. Genova, P. Montagna, A. Rotondi, V. Abramov, N. Belikov, S. Bukreeva, A. Davidenko, A. Derevschikov, Y. Goncharenko, V. Grishin, V. Kachanov, V. Kormilitsin, A. Levin, Y. Melnik, N. Minaev, V. Mochalov, D. Morozov, L. Nogach, S. Poslavskiy, A. Ryazantsev, S. Ryzhikov, P. Semenov, I. Shein, A. Uzunian, A. Vasiliev, A. Yakutin, E. Tomasi-Gustafsson, U. Roy, B. Yabsley, S. Belostotski, G. Gavrilov, A. Izotov, S. Manaenkov, O. Miklukho, D. Veretennikov, A. Zhdanov, K. Makonyi, M. Preston, P. Tegner, D. Wölbing, T. Bäck, B. Cederwall, A.K. Rai, S. Godre, D. Calvo, S. Coli, P. De Remigis, A. Filippi, G. Giraudo, S. Lusso, G. Mazza, M. Mignone, A. Rivetti, R. Wheadon, F. Balestra, F. Iazzi, R. Introzzi, A. Lavagno, J. Olave, A. Amoroso, M.P. Bussa, L. Busso, F. De Mori, M. Destefanis, L. Fava, L. Ferrero, M. Greco, J. Hu, L. Lavezzi, M. Maggiora, G. Maniscalco, S. Marcello, S. Sosio, S. Spataro, R. Birsa, F. Bradamante, A. Bressan, A. Martin, H. Calen, W. Ikegami Andersson, T. Johansson, A. Kupsc, P. Marciniewski, M. Papenbrock, J. Pettersson, K. Schönning, M. Wolke, B. Galnander, J. Diaz, V. Pothodi Chackara, A. Chlopik, G. Kesik, D. Melnychuk, B. Slowinski, A. Trzcinski, M. Wojciechowski, S. Wronka, B. Zwieglinski, P. Bühler, J. Marton, D. Steinschaden, K. Suzuki, E. Widmann, J. Zmeskal, Jürgen Gerl, Ivan Kojouharov, Jasmina Kojouharova, and Research unit Nuclear & Hadron Physics
Subjects: Particle physics, Nuclear and High Energy Physics, COLLISIONS, Strong interaction, Nuclear Theory, hyperatoms, Antiprotons, Hyperatoms, Hypernuclei, Strangeness, EXCHANGE CURRENTS, 01 natural sciences, Partícules (Física nuclear), NO, Nuclear physics, Subatomär fysik, Hypemuclei, strangeness, DECUPLET BARYONS, ELECTRIC QUADRUPOLE-MOMENTS, 0103 physical sciences, Subatomic Physics, 010306 general physics, Nuclear Experiment, Physics, hypernuclei, NUCLEI, 010308 nuclear & particles physics, Hyperon, Transport theory, DOUBLE-LAMBDA-HYPERNUCLEI, MODEL, OMEGA, Antiproton, Physics::Accelerator Physics, Heavy ion, High Energy Physics::Experiment, antiprotons, INTERMEDIATE ENERGIES, EMULSION
Abstract: Bound nuclear systems with two units of strangeness are still poorly known despite their importance for many strong interaction phenomena. Stored antiprotons beams in the GeV range represent an unparalleled factory for various hyperon-antihyperon pairs. Their outstanding large production probability in antiproton collisions will open the floodgates for a series of new studies of systems which contain two or even more units of strangeness at the PANDA experiment at FAIR. For the first time, high resolution gamma-spectroscopy of doubly strange Lambda Lambda-hypernuclei will be performed, thus complementing measurements of ground state decays of Lambda Lambda-hypernuclei at J-PARC or possible decays of particle unstable hypernuclei in heavy ion reactions. High resolution spectroscopy of multistrange Xi(-) -atoms will be feasible and even the production of Omega(-) -atoms will be within reach. The latter might open the door to the vertical bar S vertical bar = 3 world in strangeness nuclear physics, by the study of the hadronic Omega(-) -nucleus interaction. For the first time it will be possible to study the behavior of Xi(+) in nuclear systems under well controlled conditions. (C) 2016 Elsevier B.V. All rights reserved.
Published: 2016
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10. Neutron-proton coincidences from Non-Mesonic Weak Decay of p-shell Λ-hypernuclei and determination of the two-nucleon induced process

Author: Germano Bonomi, Aldo Zenoni, P. Gianotti, F. L. Fabbri, Stefania Bufalino, M. Bregant, V. Lucherini, V. Paticchio, G. Garbarino, Michelangelo Agnello, O. Morra, R. Wheadon, Luigi Benussi, E. M. Fiore, B. Dalena, Haruhiko Outa, Tullio Bressani, Tomofumi Nagae, A. Filippi, D. Calvo, G. DʼErasmo, N. Mirfakhrai, Stefano Piano, G. Simonetti, N. Grion, Rinaldo Rui, S. Marcello, F. De Mori, M. Bertani, Paolo Camerini, P. Genova, Hiroyuki Fujioka, Elena Botta, H. C. Bhang, L. Busso, A. Pantaleo, Paolo Montagna, A. Feliciello, F. Moia, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D’Erasmo, F. L., Fabbri, A., Feliciello, A. Filippib E. M., Fiore, H., Fujioka, P., Genova, P., Gianotti, N., Grion, V., Lucherini, S., Marcello, N., Mirfakhrai, F., Moia, P., Montagna, O., Morra, T., Nagae, H., Outa, A., Pantaleo, V., Paticchio, S., Piano, Rui, Rinaldo, G., Simonetti, R., Wheadon, A., Zenoni, and G., Garbarino
Subjects: Nuclear and High Energy Physics, Particle physics, Proton, Nuclear Theory, Shell (structure), Λ-hypernuclei, weak decays, 01 natural sciences, Spectral line, Two nucleon induced decay, Delta baryon, Nuclear physics, Non-mesonic weak decay, 0103 physical sciences, Neutron, Λ-hypernuclei, Non-mesonic weak decay, Two nucleon induced decay, 010306 general physics, Lambda-hypernuclei, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Hypernucleus, Charged particle, High Energy Physics::Experiment, Nucleon, Hypernuclear physics
Abstract: The decay of Λ -hypernuclei without π emission, known as Non-Mesonic Weak Decay (NMWD), gives an effective tool to investigate Δ S = 1 four-baryon interactions. It was theoretically suggested that the two-nucleon induced mechanism could play a substantial role in reproducing the observed NMWD decay rates and nucleon spectra, but at present no direct evidence of such a mechanism has been obtained. The FINUDA experiment, exploiting the possibility to detect both charged and neutral particles coming from the hypernucleus decay, has allowed us to deduce the relative weight of the two nucleon induced decay rate to the total NMWD rate. The value of Γ 2 N / Γ NMWD = 0.21 ± 0.07 stat − 0.02 sys + 0.03 sys has been deduced, well consistent with the previous determinations.
Published: 2011

11. Proton spectra from Non-Mesonic Weak Decay of p-shell Λ-hypernuclei and evidence for the two-nucleon induced process

Author: A. Andronenkov, F. L. Fabbri, Haruhiko Outa, V. Lenti, P. Genova, D. Calvo, Aldo Zenoni, Michiko Sekimoto, R. Wheadon, G. D'Erasmo, Tullio Bressani, N. Grion, Paolo Camerini, M. Palomba, O. Morra, E. M. Fiore, G. A. Beer, V. Lucherini, N. Mirfakhrai, A. Filippi, Michelangelo Agnello, O. Hartmann, F. De Mori, Akihiro Toyoda, G. Simonetti, Paola Gianotti, Luigi Benussi, D. Nakajima, Stefania Bufalino, E. Pace, M. Bertani, B. Dalena, Andrea Fontana, G. Garbarino, Tomofumi Maruta, A. Panzarasa, L. Busso, Paolo Montagna, Marco Bregant, A. Pantaleo, Rinaldo Rui, S. Marcello, S. Piano, V. Paticchio, F. Pompili, A. Feliciello, Germano Bonomi, Tomofumi Nagae, Hiroyuki Fujioka, Elena Botta, H. C. Bhang, M., Agnello, A., Andronenkov, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D'Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, O., Hartmann, V., Lenti, V., Lucherini, S., Marcello, T., Maruta, N., Mirfakhrai, P., Montagna, O., Morra, T., Nagae, D., Nakajima, H., Outa, E., Pace, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, M., Sekimoto, G., Simonetti, A., Toyoda, R., Wheadon, A., Zenoni, and G., Garbarino
Subjects: Mass number, Physics, Nuclear and High Energy Physics, Range (particle radiation), Proton, Branching fraction, Nuclear Theory, Shell (structure), FOS: Physical sciences, lambda hypernuclei, Kinetic energy, Spectral line, Nuclear physics, non-mesonic decay, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Atomic physics, Nucleon, Nuclear Experiment
Abstract: New spectra from the FINUDA experiment of the Non Mesonic Weak Decay (NMWD) proton kinetic energy for 9(Lambda)Be, 11(Lambda)B, 12(Lambda)C, 13(Lambda)C, 15 (Lambda)N and 16(Lambda)O are presented and discussed along with the published data on 5(Lambda)He and 7(Lambda)Li. Exploiting the large mass number range and the low energy threshold (15 MeV) for the proton detection of FINUDA, an evaluation of both Final State Interactions (FSI) and the two nucleon induced NMWD contributions to the decay process has been done. Based on this evaluation, a linear dependence of FSI on the hypernuclear mass number A is found and for the two nucleon stimulated decay rate the experimental value of Gamma2/Gammap=0.43+-0.25 is determined for the first time. A value for the two nucleon stimulated decay rate to the total decay rate Gamma2/GammaNMWD=0.24+-0.10 is also extracted., 11 pages and 2 figures
Published: 2010

12. Study of two-body non-mesonic decays of light hypernuclei with FINUDA

Author: Haruhiko Outa, B. Dalena, Tullio Bressani, F. L. Fabbri, N. Mirfakhrai, Andrea Fontana, Germano Bonomi, F. Moia, Stefano Piano, G. Simonetti, Paolo Camerini, R. Wheadon, E. M. Fiore, D. Calvo, N. Grion, V. Paticchio, F. De Mori, P. Genova, Tomofumi Nagae, G. D'Erasmo, D. Nakajima, Luigi Benussi, B. H. Kang, Rinaldo Rui, S. Marcello, E. Botta, V. Lucherini, M. Bertani, O. Morra, A. Filippi, Akihiro Toyoda, Michelangelo Agnello, Stefania Bufalino, Marco Bregant, Paola Gianotti, H. C. Bhang, F. Pompili, A. Feliciello, Aldo Zenoni, L. Busso, A. Pantaleo, Tomofumi Maruta, Hiroyuki Fujioka, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D'Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, B., Kang, V., Lucherini, S., Marcello, T., Maruta, N., Mirfakhrai, F., Moia, O., Morra, T., Nagae, D., Nakajima, H., Outa, A., Pantaleo, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, A., Toyoda, R., Wheadon, and A., Zenoni
Subjects: Physics, Nuclear physics, Non Mesonic Weak Decay, Nuclear and High Energy Physics, hypernucleu, hypernucleus, non-mesonic decay, Light Hypernuclei, High Energy Physics::Experiment, Nuclear Experiment, Branching (polymer chemistry)
Abstract: The Non-Mesonic two-body decays He Λ 4 → d d , p t and He Λ 5 → d t have been studied by the FINUDA experiment. The branching ratios for these rare decay channels are given.
Published: 2010

13. Results on Λp emission from K− absorption at rest on light nuclei

Author: A. Filippi, F. Moia, R. Wheadon, P. Genova, H. Fujioka, O. Morra, Paolo Camerini, N. Grion, A. Pantaleo, Rinaldo Rui, S. Marcello, P. Gianotti, Paolo Montagna, B. Dalena, V. Paticchio, E. M. Fiore, D. Calvo, F. De Mori, Haruhiko Outa, Hyoungchan Bhang, Luigi Benussi, Elena Botta, Germano Bonomi, A. Feliciello, M. Bertani, L. Busso, V. Lucherini, Andrea Fontana, Tullio Bressani, Marco Bregant, Aldo Zenoni, F. L. Fabbri, Michelangelo Agnello, N. Mirfakhrai, Tomofumi Nagae, G. DʼErasmo, Stefania Bufalino, Stefano Piano, and G. Simonetti
Subjects: Nuclear physics, Physics, Rest (physics), Nuclear and High Energy Physics, Light nucleus, Atomic physics, Absorption (electromagnetic radiation)
Abstract: The analysis of the first FINUDA paper on the emission of Λp pairs following the K − absorption at rest on 6Li, 7Li, 12C nuclei has been revised by using a much larger data set and an updated analysis techniques. The preliminary results regarding the Be 9 ( K stop − , Λ p ) X reaction are discussed.
Published: 2013
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14. The A(Kstop−,π±Σ∓)A′ reaction on p-shell nuclei

Author: P. Genova, F. L. Fabbri, A. Feliciello, L. Busso, Rinaldo Rui, S. Marcello, Luigi Benussi, D. Calvo, Aldo Zenoni, Paolo Montagna, Tomofumi Nagae, Hiroyuki Fujioka, Andrea Fontana, F. Moia, B. Dalena, A. Filippi, V. Lucherini, Germano Bonomi, Stefania Bufalino, Elena Botta, H. C. Bhang, Michelangelo Agnello, P. Gianotti, E. M. Fiore, O. Morra, G. DʼErasmo, V. Paticchio, Marco Bregant, Stefano Piano, G. Simonetti, A. Pantaleo, Tullio Bressani, N. Mirfakhrai, Haruhiko Outa, Paolo Camerini, F. De Mori, M. Bertani, R. Wheadon, and N. Grion
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Reaction mechanism, Pion, Spectrometer, Hydrogen, chemistry, Pi, Sigma, chemistry.chemical_element, Atomic physics, Spectral line
Abstract: This Letter is concerned with the study of the K stop − A → π ± Σ ∓ A ′ reaction in p-shell nuclei, i.e., 6,7 Li, 9 Be, 13 C and 16 O. The π ± Σ ∓ / K stop − emission rates are reported as a function of A . These rates are discussed in comparison with previous findings. The ratio π − Σ + / π + Σ − in p-shell nuclei is found to depart largely from that on hydrogen, which provides support for large in-medium effects possibly generated by the sub-threshold Λ ( 1405 ) . The continuum momentum spectra of prompt pions and free sigmas are also discussed as well as the π ± Σ ∓ missing mass behavior and the link with the reaction mechanism. The apparatus used for the investigation is the FINUDA spectrometer operating at the DA Φ NE ϕ -factory (LNF-INFN, Italy).
Published: 2011
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15. The search for antikaon nuclear bound states, recent results from FINUDA

Author: A. Andronenkov, Luigi Benussi, Tomofumi Nagae, D. Calvo, D. Nakajima, Germano Bonomi, Michiko Sekimoto, A. Pantaleo, Tullio Bressani, V. Lucherini, Tomofumi Maruta, V. Paticchio, Stefano Piano, Michelangelo Agnello, O. Morra, G. Simonetti, Rinaldo Rui, S. Marcello, N. Mirfakhrai, E. Bonifazi, Paolo Camerini, A. Filippi, E. M. Fiore, Paolo Montagna, E. Botta, Akihiro Toyoda, G. D'Erasmo, R. Wheadon, Haruhiko Outa, P. Genova, B. Dalena, N. Grion, Aldo Zenoni, V. Lenti, M. Palomba, F. De Mori, A. Panzarasa, L. Busso, Stefania Bufalino, E. Pace, M. Bertani, F. L. Fabbri, Paola Gianotti, F. Pompili, A. Feliciello, Andrea Fontana, G. A. Beer, O. Hartmann, B. H. Kang, Marco Bregant, A. S. Lorente, Hiroyuki Fujioka, and H. C. Bhang
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Light nucleus, dynamics, systems, pairs, Spectrometer, Bound state, General Physics and Astronomy
Abstract: Novel data from the [Formula: see text] absorption reaction in light nuclei are presented. The data were collected by the FINUDA spectrometer running at the DAΦNE ϕ-facility, Laboratori Nazionali di Frascati (LNF), Italy.
Published: 2010

16. Measurement of the proton spectra from non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC

Author: E. M. Fiore, Haruhiko Outa, Paolo Montagna, D. Nakajima, A. Andronenkov, G. Simonetti, F. Pompili, V. Tereshchenko, Paolo Camerini, Elena Botta, D. Calvo, H. C. Bhang, M. Palomba, G. D'Erasmo, A. Filippi, Rinaldo Rui, S. Marcello, A. Feliciello, G. A. Beer, O. Morra, F. De Mori, S. Piano, V. Lucherini, B. Dalena, E. Pace, M. Bertani, Marco Bregant, O. Hartmann, Tomofumi Nagae, D. Faso, Michelangelo Agnello, Adriano Fontana, Y. Lee, Michele Arturo Caponero, Stefania Bufalino, Tullio Bressani, F. L. Fabbri, A. Pantaleo, Aldo Zenoni, Tomofumi Maruta, Paola Gianotti, Hiroyuki Fujioka, A. Panzarasa, N. Mirfakhrai, L. Busso, B. H. Kang, Luigi Benussi, V. Lenti, V. Paticchio, R. Wheadon, N. Grion, Akihisa Toyoda, Stefano Bianco, D. Elia, Michiko Sekimoto, Alexey Krasnoperov, Germano Bonomi, and V. Manzari
Subjects: Physics, Nuclear and High Energy Physics, Nuclear Theory, State (functional analysis), Lower limit, Spectral line, law.invention, Nuclear physics, Low energy, law, Physics::Accelerator Physics, Proton spectra, Atomic physics, Nuclear Experiment, Collider
Abstract: The results of a measurement of the proton spectra following the non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC are presented and discussed. The experiment was performed at the ( e + e − ) collider DAΦNE at Laboratori Nazionale di Frascati of INFN. It is the first measurement for 7ΛLi, and for all the spectra the lower limit on the energy of the protons is 15 MeV, never reached before. All the spectra show a similar shape, namely a peak at around 80 MeV as expected for the free Λ p → n p weak reaction, with a low energy rise that should be due to final state interactions and/or two-nucleon induced weak processes. The decay spectrum of 5ΛHe is somehow similar to the ones reported by previous measurements and theoretical calculations, but the same does not happen for the 12ΛC one.
Published: 2008

17. Correlated Λd pairs from the Kstop−A→ΛdA′ reaction

Author: H. So, V. Paticchio, Sandro Tomassini, Alessandro Feliciello, D. Di Santo, F. Pompili, R. Wheadon, Paolo Camerini, Michelangelo Agnello, A. Panzarasa, Elena Botta, H. C. Bhang, L. Busso, Tomofumi Nagae, Germano Bonomi, N. Grion, G. Simonetti, F. L. Fabbri, M. Pallotta, V. Lenti, V. Lucherini, V. Manzari, A. Olin, D. Faso, V. Filippini, M. E. Fiore, F. De Mori, P. Cerello, O. Morra, D. Calvo, A. Pantaleo, M. Caponero, Aldo Zenoni, G. D'Erasmo, Akihisa Toyoda, Tomofumi Maruta, Haruhiko Outa, Rinaldo Rui, S. Marcello, Tullio Bressani, L. Benussi, R. Fini, M. Palomba, E. Pace, M. Bertani, Hiroyuki Fujioka, S. Piano, Stefania Bufalino, N. Mirfakhrai, A. Krasnoperov, A. Filippi, R. Donà, V. Tereshchenko, Paola Gianotti, Marco Bregant, B. Dalena, G. A. Beer, O. Hartmann, Stefano Bianco, and D. Elia
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, chemistry, Deuterium, Yield (chemistry), Binding energy, chemistry.chemical_element, Lithium, Invariant mass, Atomic physics, Few-body systems, Absorption (electromagnetic radiation)
Abstract: Correlated Λd pairs emitted after the absorption of negative kaons at rest K stop − A → Λ d A ′ in light nuclei 6Li and 12C are studied. Λ-hyperons and deuterons are found to be preferentially emitted in opposite directions. The Λd invariant mass spectrum of 6Li shows a bump whose mass is 3251 ± 6 MeV / c 2 . The bump mass (binding energy), width and yield are reported. The appearance of a bump is discussed in the realm of the [ K ¯ 3 N ] clustering process in nuclei. The experiment was performed with the FINUDA spectrometer at DAΦNE (LNF).
Published: 2007
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18. Study of the proton weak decay of 12 ΛCg.s. with FINUDA

Author: A. Feliciello, V. Lucherini, Michelangelo Agnello, E. M. Fiore, O. Hartmann, Stefano Bianco, D. Elia, Rinaldo Rui, S. Marcello, Tullio Bressani, A. Pantaleo, Paola Gianotti, N. Mirfakhrai, Paolo Camerini, D. Calvo, M. Pallotta, Sandro Tomassini, R. Wheadon, Stefano Piano, G. Simonetti, O. Morra, N. Grion, Germano Bonomi, G. D'Erasmo, F. Pompili, V. Manzari, B. Dalena, Elena Botta, V. Tereshchenko, G. A. Beer, F. De Mori, A. Panzarasa, L. Busso, H. C. Bhang, F. L. Fabbri, Stefania Bufalino, D. Di Santo, V. Lenti, V. Paticchio, D. Faso, Tomofumi Nagae, E. Pace, M. Bertani, Haruhiko Outa, Hiroyuki Fujioka, Alexey Krasnoperov, Marco Bregant, H. So, Luigi Benussi, P. Cerello, A. Filippi, Akihiro Toyoda, R. Fini, M. Palomba, Michele Arturo Caponero, V. Filippini, Aldo Zenoni, and Tomofumi Maruta
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, Nuclear Theory, Hadron, law.invention, Nuclear physics, law, Physics::Accelerator Physics, Nuclear fusion, Proton spectra, High Energy Physics::Experiment, Nuclear Experiment, Collider
Abstract: The FINUDA experiment studies the Λ-hypernuclei formation and decay using the reaction (K stop − , π−) induced by the low-momentum K − from the deacy of the φ-meson produced at the (e +, e−) collider DAφNE at the Laboratory Nazionali di Frascati of INFN. In this paper we present new data on the proton spectra following the weak decay of Λ 12 C.
Published: 2007
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19. Experimental study of the (K+,K0) interactions on 7Li close to threshold

Author: Michele Arturo Caponero, V. Filippini, F. Pompili, A. Panzarasa, F. De Mori, P. Gianotti, G. D’Erasmo, Stefania Bufalino, R. Rui, A. Feliciello, H. So, G. A. Beer, D. Faso, S. Piano, M. Agnello, V. Lenti, E. Pace, E. M. Fiore, M. Bertani, Alexey Krasnoperov, H.B. Kang, D. Di Santo, E. Botta, R. Fini, V. Tereshchenko, M. Palomba, M. Pallotta, T. Bressani, H. C. Bhang, T. Maruta, O. Hartmann, A. Filippi, N. Mirfakhrai, V. Paticchio, A. Zenoni, N. Grion, B. Dalena, V. Lucherini, D. Calvo, Tomofumi Nagae, S. Marcello, Marco Bregant, Germano Bonomi, P. Cerello, V. Manzari, F.L. Fabbri, Hiroyuki Fujioka, L. Busso, G. Simonetti, A. Olin, P. Camerini, A. Pantaleo, O. Morra, Stefano Bianco, D. Elia, Akihisa Toyoda, Sandro Tomassini, R. Wheadon, Haruhiko Outa, and L. Benussi
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Momentum (technical analysis), Spectrometer, law, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Collider, law.invention, Charge exchange
Abstract: The inelastic charge exchange reaction ( K + , K 0 ) on 7Li has been experimentally investigated close to threshold with the FINUDA spectrometer at the e + e − collider DAΦNE by searching for K S 0 decays. It is the first time that this process has been studied at such low momentum. An upper limit of 2.0 mb (at 95% confidence level) has been measured for the total cross section.
Published: 2007
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20. An Integrated Flow and Pressure Metering solution with GPRS WITS Protocol

Author: R. Wheadon, C. Williams, and R. Keech
Subjects: Engineering, SCADA, Flow (mathematics), Hardware_GENERAL, business.industry, Embedded system, ComputingMethodologies_MISCELLANEOUS, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Metering mode, General Packet Radio Service, business, Protocol (object-oriented programming), Flow metering
Abstract: Presents a collection of slide covering the following topics: flow metering solution; pressure metering solution; GPRS WITS protocol; and WITS-based SCADA.
Published: 2015
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21. Search for HΛ6 and HΛ7 with the (Kstop−,π+) reaction

Author: F. De Mori, H. So, V. Filippini, A. Feliciello, Stefano Bianco, F. L. Fabbri, E. Pace, D. Elia, M. Bertani, Sandro Tomassini, Haruhiko Outa, L. Benussi, A. Olin, Aldo Zenoni, Tomofumi Maruta, Paolo Camerini, V. Tereshchenko, G. A. Beer, R. Don, M. E. Fiore, Akihisa Toyoda, Michelangelo Agnello, A. Filippi, Rinaldo Rui, V. Lenti, S. Marcello, O. Morra, R. Wheadon, N. Grion, G. Simonetti, Paola Gianotti, V. Manzari, D. Calvo, Tomofumi Nagae, A. Pantaleo, D. Faso, V. Paticchio, Marco Bregant, Tullio Bressani, S. Piano, M. Caponero, Elena Botta, F. Pompili, G. D'Erasmo, P. Cerello, H. C. Bhang, N. Mirfakhrai, D. Di Santo, B. Dalena, A. Panzarasa, V. Lucherini, L. Busso, Hiroyuki Fujioka, M. Pallotta, Alexey Krasnoperov, R. Fini, and M. Palomba
Subjects: Nuclear physics, Momentum, Physics, Nuclear and High Energy Physics, Spectrometer, Pi, Analytical chemistry, Neutron, Lambda, Spectral line
Abstract: The production of neutron rich Λ-hypernuclei via the ( K stop − , π + ) reaction has been studied using data collected with the FINUDA spectrometer at the DAΦNE ϕ-factory (LNF). The analysis of the inclusive π + momentum spectra is presented and an upper limit for the production of H Λ 6 and H Λ 7 from 6Li and 7Li, is assessed for the first time.
Published: 2006
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22. First results on 12ΛC production at DAΦNE

Author: Paolo Camerini, M. E. Fiore, E. Pace, M. Bertani, V. Filippini, V. Tereshchenko, D. Calvo, H. So, G. D'Erasmo, G. Simonetti, A. Olin, Akihisa Toyoda, Piergiorgio Cerello, F. Pompili, M. Caponero, V. Manzari, D. Di Santo, F.L. Fabbri, G. A. Beer, Sandro Tomassini, A. Panzarasa, Michelangelo Agnello, Marco Bregant, Stefano Bianco, L. Busso, T. Maruta, D. Elia, Hiroyuki Fujioka, M. Pallotta, V. Lucherini, Tomofumi Nagae, R. Donà, F. De Mori, V. Paticchio, Alessandro Feliciello, Alexey Krasnoperov, L. Benussi, B. Dalena, H. Outa, R. Wheadon, D. Faso, Rinaldo Rui, S. Marcello, N. Grion, S. Piano, A. Pantaleo, Elena Botta, H. C. Bhang, O. Morra, V. Lenti, Tullio Bressani, Paola Gianotti, A. Filippi, N. Mirfakhrai, Aldo Zenoni, R. Fini, and M. Palomba
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Spectrometer, Hadron, Lambda, law.invention, Nuclear physics, Momentum, Full width at half maximum, law, Excited state, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Collider, Ground state
Abstract: A-hypenuclei are produced and studied, with the FINUDA spectrometer, for the first time at an e(+)e(-) collider: DA Phi NE, the Frascati phi-factory. The slow negative kaons from phi(1020) decay are stopped in thin (0.2 g/cm(2)) nuclear targets, and A-hypemuclei formation is detected by measuring the momentum of the outgoing pi(-). A preliminary analysis on C-12(Lambda) shows X an energy resolution of 1.29 MeV FWHM on the hypernuclear levels, the best obtained so far with magnetic spectrometers at hadron facilities. Capture rates for the ground state and the excited ones are reported, and compared with previous experiments. (c) 2005 Elsevier B.V. All rights reserved
Published: 2005
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23. First observation of the hyper superheavy hydrogen 6ΛH

Author: M. Agnello, L. Benussi, M. Bertani, H. C. Bhang, G. Bonomi, E. Botta, T. Bressani, S. Bufalino, L. Busso, D. Calvo, B. Dalena, F. De Mori, G. D’Erasmo, F. L. Fabbri, A. Feliciello, A. Filippi, E. M. Fiore, A. Fontana, H. Fujioka, P. Genova, P. Gianotti, N. Grion, V. Lucherini, S. Marcello, N. Mirfakhrai, F. Moia, O. Morra, T. Nagae, H. Outa, A. Pantaleo, V. Paticchio, G. Simonetti, R. Wheadon, A. Zenoni, A. Gal, BREGANT, MARCO, CAMERINI, Paolo, PIANO, STEFANO, RUI, RINALDO, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, Bregant, Marco, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D’Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, V., Lucherini, S., Marcello, N., Mirfakhrai, F., Moia, O., Morra, T., Nagae, H., Outa, A., Pantaleo, V., Paticchio, Piano, Stefano, Rui, Rinaldo, G., Simonetti, R., Wheadon, A., Zenoni, and A., Gal
Subjects: Neutron-rich Λ-hypernuclei, Neutron drip line, Neutron-rich Λ-hypernuclei, Neutron drip line, Neutron halo phenomena, Neutron halo phenomena
Abstract: Three candidate events of the neutron-rich hypernucleus 6Λ H were uniquely identified in the FINUDA experiment at DANE, Frascati, by observing π + mesons from the (K − stop,π +) production reaction on 6Li targets, in coincidence with π − mesons from 6Λ H→6He+ π − weak decay. Details of the experiment and the analysis of its data are reported, leading to an estimate of (2.9 ± 2.0) · 10−6/K − stop for the 6Λ H production rate times the two-body π − weak decay branching ratio. The 6 ΛH binding energy with respect to 5H+Λwas determined jointly from production and decay to be BΛ = (4.0±1.1) MeV, assuming that 5H is unbound with respect to 3H+2n by 1.7 MeV. The binding energy determined from production is higher, in each one of the three events, than that determined from decay, with a difference of (0.98±0.74) MeV here assigned to the 0+ g.s. →1+ excitation. The consequences of this assignment to Λ hypernuclear dynamics are briefly discussed.
Published: 2012

24. Hypernuclear weak decay studies with FINUDA

Author: M. Agnello, L. Benussi, M. Bertani, H.C. Bhang, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, B. Dalena, F. De Mori, G. DʼErasmo, F.L. Fabbri, A. Feliciello, A. Filippi, E.M. Fiore, H. Fujioka, P. Gianotti, N. Grion, V. Lucherini, S. Marcello, N. Mirfakhrai, F. Moia, P. Montagna, O. Morra, T. Nagae, H. Outa, A. Pantaleo, V. Paticchio, S. Piano, R. Rui, G. Simonetti, R. Wheadon, A. Zenoni, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, Bregant, Marco, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D’Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, V., Lucherini, S., Marcello, N., Mirfakhrai, F., Moia, P., Montagna, O., Morra, T., Nagae, H., Outa, A., Pantaleo, V., Paticchio, Piano, Stefano, Rui, Rinaldo, G., Simonetti, R., Wheadon, and A., Zenoni
Subjects: Physics, hypernuclei, Nuclear and High Energy Physics, Nuclear Theory, Width ratio, Kinetic energy, weak decay, Coincidence, Spectral line, mesonic weak decay, non-mesonic weak decay, two-nucleon induced decay, mesonic decay, Nuclear physics, hypernuclei, weak decay, mesonic decay, Proton spectra, High Energy Physics::Experiment, Neutron, Atomic physics, Nuclear Experiment
Abstract: The FINUDA experiment has recently completed an extensive study of the weak decay of p-shell Λ-hypernuclei including both mesonic and non-mesonic modes. Charged mesonic decay rates have been determined based on the analysis of π − kinetic energy spectra, never measured before. The study of proton spectra from non-mesonic weak decay for p-shell hypernuclei, both single and in coincidence with a neutron, has triggered the investigation of the two-nucleon induced Λ N N → n N N decay channel: its weight has been evaluated to be Γ 2 / Γ N M = 0.21 ± 0.07 stat − 0.02 sys + 0.03 sys . Finally, a direct experimental evidence of the occurrence of the weak reaction Λ n p → n n p in nuclei is presented for the first time. Three events have been found which can be attributed to Li Λ 7 and Be Λ 9 two-nucleon induced non-mesonic weak decay; the kinematical analysis is discussed here.
Published: 2012

25. Evidence for Heavy Hyperhydrogen 6H

Author: B. Dalena, F. Moia, D. Calvo, Stefano Piano, F. De Mori, A. Pantaleo, O. Morra, Adriano Fontana, P. Genova, Tomofumi Nagae, V. Lucherini, G. D'Erasmo, Aldo Zenoni, Michelangelo Agnello, A. Feliciello, Germano Bonomi, E. M. Fiore, H. Fujioka, Paolo Camerini, L. Busso, Rinaldo Rui, S. Marcello, R. Wheadon, Avraham Gal, N. Grion, Elena Botta, H. C. Bhang, Stefania Bufalino, A. Filippi, Luisa Benussi, Giuseppe Simonetti, Tullio Bressani, M. Bertani, N. Mirfakhrai, P. Gianotti, V. Paticchio, F. L. Fabbri, Marco Bregant, Haruhiko Outa, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, Bregant, Marco, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., De Mori, G., D’Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, V., Lucherini, S., Marcello, N., Mirfakhrai, F., Moia, O., Morra, T., Nagae, H., Outa, A., Pantaleo, V., Paticchio, Piano, Stefano, Rui, Rinaldo, G., Simonetti, R., Wheadon, and A., Zenoni
Subjects: Physics, Systematic difference, neutron-rich hypernuclei, 010308 nuclear & particles physics, hypernuclear physics, heavy hydrogen, neutron rich nuclei, Binding energy, Analytical chemistry, General Physics and Astronomy, hypernuclear physic, Hypernucleus, Lambda, 01 natural sciences, Deuterium, 0103 physical sciences, Pi, 010306 general physics, Excitation, Bar (unit)
Abstract: Evidence for the neutron-rich hypernucleus H-6(Lambda) is presented from the FINUDA experiment at DA Phi NE, Frascati, studying (pi(+), pi(-)) pairs in coincidence from the (K) over bar (-)(stop) + Li-6 -> H-6(Lambda) + pi(+) production reaction followed by H-6(Lambda) -> He-6 + pi(-) weak decay. The production rate of H-6(Lambda) undergoing this two-body pi(-) decay is determined to be (2.9 +/- 2.0) x 10(-6)/K-stop(-). Its binding energy, evaluated jointly from production and decay, is B-Lambda(H-6(Lambda)) = (4.0 +/- 1.1) MeV with respect to 5H + Lambda. A systematic difference of (0.98 +/- 0.74) MeV between B-Lambda values derived separately from decay and from production is tentatively assigned to the H-6(Lambda) 0(g.s)(+) excitation
Published: 2012

26. NEW RESULTS ON NONMESONIC WEAK DECAY OF Lambda HYPERNUCLEI WITH FINUDA

Author: D. Nakajima, O. Hartmann, Haruhiko Outa, Michiko Sekimoto, M. Palomba, G. D'Erasmo, Tomofumi Maruta, V. Lenti, Elena Botta, H. C. Bhang, D. Calvo, Tomofumi Nagae, F. L. Fabbri, Aldo Zenoni, Germano Bonomi, A. Panzarasa, L. Busso, A. Andronenkov, Paola Gianotti, A. Pantaleo, E. M. Fiore, Stefano Piano, R. Wheadon, V. Lucherini, G. Simonetti, Paolo Montagna, N. Grion, G. A. Beer, Michelangelo Agnello, O. Morra, Tullio Bressani, N. Mirfakhrai, P. Genova, V. Paticchio, A. Sanchez Lorente, Stefania Bufalino, A. Filippi, Akihiro Toyoda, Luigi Benussi, Rinaldo Rui, S. Marcello, F. Pompili, Marco Bregant, A. Feliciello, Paolo Camerini, B. Dalena, Andrea Fontana, F. De Mori, E. Pace, M. Bertani, Hiroyuki Fujioka, B. H. Kang, S., Bufalino, E., Botta, T., Bressani, F., De Mori, S., Marcello, D., Calvo, A., Feliciello, A., Filippi, R., Wheadon, L., Busso, O., Morra, M., Agnello, L., Benussi, M., Bertani, F. L., Fabbri, P., Gianotti, O., Hartmann, V., Lucherini, E., Pace, F., Pompili, A., Andronenkov, M., Palomba, A., Pantaleo, V., Paticchio, B., Dalena, G., D'Erasmo, E. M., Fiore, G., Simonetti, V., Lenti, G., Bonomi, A., Zenoni, A., Fontana, P., Genova, A., Panzarasa, P., Montagna, Bregant, Marco, Camerini, Paolo, Rui, Rinaldo, N., Grion, Piano, Stefano, H., Fujioka, T., Nagae, H., Outa, M., Sekimoto, A., Toyoda, T., Maruta, H. C., Bhang, B., Kang, D., Nakajima, N., Mirfakhrai, G., Beer, and A., Sanchez Lorente
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, FINUDA, Hypernuclei, nonmesonic weak decay, proton spectra, General Physics and Astronomy, Spectral line
Abstract: The FINUDA experiment has performed a systematic study of the NonMesonic Weak Decay (NMWD) of Λ hypernuclei analizing all the data collected from 2003 up to 2007. The results of a measurement of the spectra of protons coming from the NMWD of [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] are the subject of this paper.
Published: 2010

27. Mesonic and Non-Mesonic Weak Decay of Hypernuclei with FINUDA

Author: M. AGNELLO, A. ANDRONENKOV, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, G. BONOMI, E. BOTTA, M. BREGANT, T. BRESSANI, S. BUFALINO, L. BUSSO, D. CALVO, B. DALENA, F. DE MORI, G. D'ERASMO, F. L. FABBRI, A. FELICIELLO, A. FILIPPI, E. M. FIORE, C, A. FONTANA, H. FUJIOKA, P. GENOVA, P. GIANOTTI, N. GRION, O. HARTMANN, B. KANG, LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, P. MONTAGNA, O. MORRA, T. NAGAE, D. NAKAJIMA, H. OUTA, E. PACE, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, A. SANCHEZ LORENTE, M. SEKIMOTO, G. SIMONETTI, A. TOYODA, R. WHEADON, A. ZENONI, A. GAL, CAMERINI, Paolo, RUI, RINALDO, M., Agnello, A., Andronenkov, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., DE MORI, G., D'Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, O., Hartmann, B., Kang, Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, P., Montagna, O., Morra, T., Nagae, D., Nakajima, H., Outa, E., Pace, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, A., SANCHEZ LORENTE, M., Sekimoto, G., Simonetti, A., Toyoda, R., Wheadon, A., Zenoni, and A., Gal
Subjects: Physics, Nuclear and High Energy Physics, Λ-hypernuclei, mesonic decay, non-mesonic decay, FINUDA experiment, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Λ-hypernuclei, Shell (structure), FINUDA experiment, weak decay, mesonic decay, Nuclear physics, Hypernuclei, non-mesonic decay, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The FINUDA experiment performed a systematic study of both mesonic and non-mesonic weak decay of p - shell Λ-hypernuclei. Recent results on the mesonic decay rates and the non-mesonic decay ratios are illustrated and briefly discussed.
Published: 2009

28. New results on mesonic weak decay of p-shell Lambda-hypernuclei

Author: M. AGNELLO, A. ANDRONENKOV, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, G. BONOMI, E. BOTTA, M. BREGANT, T. BRESSANI, S. BUFALINO, L. BUSSO, D. CALVO, B. DALENA, F. DE MORI, G. D'ERASMO, F. L. FABBRI, A. FELICIELLO, A. FILIPPI, E. M. FIORE, C, A. FONTANA, H. FUJIOKA, P. GENOVA, P. GIANOTTI, N. GRION, O. HARTMANN, B. KANG, LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, P. MONTAGNA, O. MORRA, T. NAGAE, D. NAKAJIMA, H. OUTA, E. PACE, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, A. SANCHEZ LORENTE, M. SEKIMOTO, G. SIMONETTI, A. TOYODA, R. WHEADON, A. ZENONI, A. GAL, CAMERINI, Paolo, RUI, RINALDO, M., Agnello, A., Andronenkov, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, B., Dalena, F., DE MORI, G., D'Erasmo, F. L., Fabbri, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Genova, P., Gianotti, N., Grion, O., Hartmann, B., Kang, Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, P., Montagna, O., Morra, T., Nagae, D., Nakajima, H., Outa, E., Pace, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, A., SANCHEZ LORENTE, M., Sekimoto, G., Simonetti, A., Toyoda, R., Wheadon, A., Zenoni, and A., Gal
Subjects: Physics, Ground-state spin assignment, Nuclear and High Energy Physics, p-Shell Lambda-hypernuclei, Mesonic decay, Nuclear Theory, lambda hypernuclei, mesonic decay, Hypernucleus, Spectral line, Pion, medicine.anatomical_structure, medicine, High Energy Physics::Experiment, p-Shell Λ-hypernuclei, Atomic physics, Magnetic analysis, Nuclear Experiment, Nucleus
Abstract: The FINUDA experiment performed a systematic study of the charged mesonic weak decay channel of $p$-shell $\Lambda$-hypernuclei. Negatively charged pion spectra from mesonic decay were measured with magnetic analysis for the first time for ${^{7}_{\Lambda}Li}$, ${^{9}_{\Lambda}Be}$, ${^{11}_{\Lambda}B}$ and ${^{15}_{\Lambda}N}$. The shape of the $\pi^{-}$ spectra was interpreted through a comparison with pion distorted wave calculations that take into account the structure of both hypernucleus and daughter nucleus. Branching ratios $\Gamma_{\pi^{-}}/\Gamma_{tot}$ were derived from the measured spectra and converted to $\pi^{-}$ decay rates $\Gamma_{\pi^{-}}$ by means of known or extrapolated total decay widths $\Gamma_{tot}$ of $p$-shell $\Lambda$-hypernuclei. Based on these measurements, the spin-parity assignment $1/2^+$ for ${^{7}_{\Lambda}Li}$ and $5/2^+$ for ${^{11}_{\Lambda}B}$ ground-state are confirmed and a spin-parity $3/2^+$ for ${^{15}_{\Lambda}N}$ ground-state is assigned for the first time., Comment: 14 pages, 5 figures
Published: 2009

29. Correlated Λt pairs from the absorption of K- at rest in light nuclei

Author: Rinaldo Rui, S. Marcello, Adriano Fontana, S. Piano, D. Faso, Michiko Sekimoto, O. Hartmann, Alexey Krasnoperov, F. Pompili, A. Panzarasa, Haruhiko Outa, L. Busso, L. Benussi, V. Lenti, G. D'Erasmo, Tomofumi Nagae, Marco Bregant, Y. Lee, A. Feliciello, H. C. Bhang, A. Filippi, M. Bertani, Germano Bonomi, Tullio Bressani, V. Paticchio, F. De Mori, P. Gianotti, G. A. Beer, Paolo Montagna, B. H. Kang, N. Mirfakhrai, V. Manzari, D. Calvo, O. Morra, M. Palomba, F.L. Fabbri, R. Wheadon, D. Nakajima, A. Andronenkov, Hiroyuki Fujioka, V. Lucherini, E. Pace, N. Grion, Michele Arturo Caponero, Paolo Camerini, Akihisa Toyoda, Aldo Zenoni, Tomofumi Maruta, E. M. Fiore, D. Elia, E. Botta, Michelangelo Agnello, B. Dalena, G. Simonetti, A. Pantaleo, V. Tereshchenko, Stefania Bufalino, M., Agnello, A., Andronenkov, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, M., Caponero, B., Dalena, F., DE MORI, G., D'Erasmo, D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, E. M., Fiore, A., Fontana, H., Fujioka, P., Gianotti, N., Grion, O., Hartmann, B., Kang, A., Krasnoperov, Y., Lee, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, P., Montagna, O., Morra, T., Nagae, D., Nakajima, H., Outa, E., Pace, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, M., Sekimoto, G., Simonetti, V., Tereshchenko, A., Toyoda, and R. WHEADON AND A., Zenoni
Subjects: Physics, Nuclear and High Energy Physics, Light nucleus, Range (particle radiation), Spectrometer, 010308 nuclear & particles physics, stati legati di kaoni su nuclei, correlazioni tra particelle, Few-body systems, 01 natural sciences, Yield (chemistry), Hypernuclei, nuclear reactions, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Absorption (electromagnetic radiation), Reaction modeling
Abstract: Novel data from the $K^{-}_{stop}A$ absorption reaction in light nuclei $^{6,7}$Li and $^{9}$Be are presented. The study aimed at finding $\Lambda t$ correlations. Regardless of $A$, the $\Lambda t$ pairs are preferentially emitted in opposite directions. Reaction modeling predominantly assigns to the $K^-_{stop}A\to\Lambda t(N)A'$ direct reactions the emission of the $\Lambda t$ pairs whose yield is found to range from $10^{-3}$ to $10^{-4}$$/K^-_{stop}$. The experiment was performed with the FINUDA spectrometer at DA$\Phi$NE (LNF)., Comment: 11 pages, 5 figures, accepted for publication in Phys. Lett. B
Published: 2008

30. STUDY OF THE (K +,K 0) REACTION ON MEDIUM LIGHT NUCLEI CLOSE TO THRESHOLD

Author: M. AGNELLO, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, S. BIANCO, G. BONOMI, E. BOTTA, M. BREGANT, T. BRESSANI, S. BUFALINO, L. BUSSO, D. CALVO, CAMERINI, Paolo, M. CAPONERO, P. CERELLO, B. DALENA, G. DERASMO, F. DE MORI, D. DI SANTO, D. ELIA, F. L. FABBRI, D. FASO, A. FELICIELLO, A. FILIPPI, V. FILIPPINI, R. A. FINI, E. M. FIORE, H. FUJIOKA, P. GIANOTTI, N. GRION, O. HARTMANN, A. KRASNOPEROV, V. LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, O. MORRA, T. NAGAE, H. OUTA, E. PACE, M. PALLOTTA, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, G. SIMONETTI, H. SO, V. TERESHCHENKO, S. TOMASSINI, A. TOYODA, R. WHEADON, A. ZENONI, RUI, RINALDO, M., Agnello, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, M., Caponero, P., Cerello, B., Dalena, G., Derasmo, F., DE MORI, D., DI SANTO, D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, R. A., Fini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, O., Hartmann, A., Krasnoperov, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, H., Outa, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, V., Tereshchenko, S., Tomassini, A., Toyoda, R., Wheadon, and A., Zenoni
Published: 2007

31. DAΦNE monitored by FINUDA

Author: Germano Bonomi, R. Fini, M. Palomba, P. Cerello, V. Manzari, H. So, P. Gianotti, V. Tereschenko, A. Pantaleo, O. Morra, V. Filippini, D. Di Santo, T. Maruta, V. Lucherini, Tomofumi Nagae, M. Pallotta, A. Feliciello, M. Agnello, Haruhiko Outa, Stefano Bianco, M. E. Fiore, L. Benussi, B. Kang, F. De Mori, Alexey Krasnoperov, D. Elia, S. Marcello, A. Panzarasa, Sandro Tomassini, L. Busso, A. Filippi, A. Zenoni, E. Botta, V. Paticchio, F. Pompili, V. Lenti, N. Grion, E. Pace, D. Calvo, M. Bertani, R. Rui, G. D’Erasmo, N. Mirfakhrai, T. Bressani, R. Wheadon, B. Dalena, Marco Bregant, P. Camerini, D. Faso, G. Simonetti, S. Piano, H. C. Bhang, F.L. Fabbri, Hiroyuki Fujioka, M., Agnello, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, G., Bonomi, E., Botta, M., Bregant, T., Bressani, L., Busso, D., Calvo, Camerini, Paolo, P., Cerello, B., Dalena, F., DE MORI, G., Derasmo, D., DI SANTO, D., Elia, F. L, Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, R., Fini, M. E., Fiore, H., Fujioka, P., Gianotti, N., Grion, B., Kang, A., Krasnoperov, V., Lucherini, V., Lenti, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, H., Outa, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, V., Tereschenko, S., Tomassini, R., Wheadon, and A., Zenoni
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Spectrometer, Collision, law.invention, Nuclear physics, Momentum, law, Physics::Accelerator Physics, Nuclear Experiment, Collider, Instrumentation, Energy (signal processing), ComputingMethodologies_COMPUTERGRAPHICS
Abstract: The FINUDA spectrometer, devoted to hypernuclear physics and installed on the DAΦNE two rings collider at the Laboratori Nationali di Frascati, is able to monitor the relevant machine parameters, as luminosity, collision vertexes, c.m. energy and transversal momentum boost, during the process of data taking to study hypernuclear physics without affecting it. The collider parameters relevant to optimize the machine performances to the needs of the experiment are measured both on-line and offline in a run-to-run basis, in an efficient, redundant way, allowing the continuous extraction of reliable and cross-checked information on the machine working conditions.
Published: 2007

32. Study of the proton weak decay of (Lambda)C-12(g.s.) with FINUDA

Author: M. AGNELLO, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, S. BIANCO, G, BONOMI, E. BOTTA, M. BREGANT, T. BRESSANI, S. BUFALINO, L. BUSSO, D. CALVO, M. CAPONERO, P. CERELLO, B. DALENA, F. DE MORI, G. D'ERASMO, D. DI SANTO, D. ELIA, F. L. FABBRI, D. FASO, A. FELICIELLO, A. FILIPPI, V. FILIPPINI, R. A. FINI, E. M. FIORE, H. FUJIOKA, P. GIANOTTI, N. GRION, O. HARTMANN, A. KRASNOPEROV, V. LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, O. MORRA, T. NAGAE, H. OUTA, E. PACE, M. PALLOTTA, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, G. SIMONETTI, H. SO, V. TERESHCHENKO, S. TOMASSINI, A. TOYODA, R. WHEADON, A. ZENONI, CAMERINI, Paolo, RUI, RINALDO, M., Agnello, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, G, Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, M., Caponero, P., Cerello, B., Dalena, F., DE MORI, G., D'Erasmo, D., DI SANTO, D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, R. A., Fini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, O., Hartmann, A., Krasnoperov, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, H., Outa, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, V., Tereshchenko, S., Tomassini, A., Toyoda, R., Wheadon, and A., Zenoni
Published: 2007

33. Experimental study of the (K+, K0) interactions on Li-7 close to threshold

Author: M. AGNELLO, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, S. BIANCO, G. BONOMI, E. BOTTA, M. BREGANT, T. BRESSANI, S. BUFALINO, L. BUSSO, D. CALVO, M. CAPONERO, P. CERELLO, B. DALENA, F. DE MORI, G. D'ERASMO, D. DI SANTO, D. ELIA, F. L. FABBRI, D. FASO, A. FELICIELLO, V. FILIPPI, V. FILIPPINI, R. A. FINI, E. M. FIORE, H. FUJIOKA, P. GIANOTTI, N. GRION, O. HARTMANN, H. B. KANG, A. KRASNOPEROV, V. LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, O. MORRA, T. NAGAE, A. OLIN, H. OUTA, E. PACE, M. PALLOTTA, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, G. SIMONETTI, H. SO, V. TERESHCHENKO, S. TOMASSINI, A. TOYODA, R. WHEADON, A. ZENONI, CAMERINI, Paolo, RUI, RINALDO, M., Agnello, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, M., Caponero, P., Cerello, B., Dalena, F., DE MORI, G., D'Erasmo, D., DI SANTO, D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, V., Filippi, V., Filippini, R. A., Fini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, O., Hartmann, H. B., Kang, A., Krasnoperov, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, A., Olin, H., Outa, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, V., Tereshchenko, S., Tomassini, A., Toyoda, R., Wheadon, and A., Zenoni
Published: 2007

34. Correlated Λd pairs from the K−stopA→ΛdA' reaction

Author: M. Agnello, G. Beer, L. Benussi, M. Bertani, H. C. Bhang, S. Bianco, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, M. Caponero, P. Cerello, B. Dalena, F. De Mori, G. D’Erasmo, D. Di Santo, D. Elia, F. L. Fabbri, D. Faso, A. Feliciello, A. Filippi, V. Filippini, R. Fini, M. E. Fiore, H. Fujioka, P. Gianotti, N. Grion, O. Hartmann, A. Krasnoperov, V. Lucherini, V. Lenti, V. Manzari, S. Marcello, T. Maruta, N. Mirfakhrai, O. Morra, T. Nagae, A. Olin, H. Outa, E. Pace, M. Pallotta, M. Palomba, A. Pantaleo, A. Panzarasa, V. Paticchio, S. Piano, F. Pompili, R. Rui, G. Simonetti, H. So, V. Tereshchenko, S. Tomassini, A. Toyoda, R. Wheadon, A. Zenoni, DONA', ROBERTO, M. Agnello, G. Beer, L. Benussi, M. Bertani, H.C. Bhang, S. Bianco, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, M. Caponero, P. Cerello, B. Dalena, F. De Mori, G. D’Erasmo, D. Di Santo, R. Donà, D. Elia, F.L. Fabbri, D. Faso, A. Feliciello, A. Filippi, V. Filippini, R. Fini, M.E. Fiore, H. Fujioka, P. Gianotti, N. Grion, O. Hartmann, A. Krasnoperov, V. Lucherini, V. Lenti, V. Manzari, S. Marcello, T. Maruta, N. Mirfakhrai, O. Morra, T. Nagae, A. Olin, H. Outa, E. Pace, M. Pallotta, M. Palomba, A. Pantaleo, A. Panzarasa, V. Paticchio, S. Piano, F. Pompili, R. Rui, G. Simonetti, H. So, V. Tereshchenko, S. Tomassini, A. Toyoda, R. Wheadon, and A. Zenoni
Published: 2007

35. A study of the proton spectra following the capture of $K^-$ in $^6$Li and $^{12}$C with FINUDA

Author: O. Morra, P. Cerello, D. Faso, F. De Mori, R. Fini, M. Palomba, R. Wheadon, N. Grion, Germano Bonomi, Tomofumi Nagae, B. Dalena, V. Manzari, E. Pace, M. Bertani, Stefano Bianco, D. Di Santo, D. Elia, V. Tereshchenko, A. Panzarasa, Sandro Tomassini, Paolo Camerini, L. Busso, A. Filippi, V. Filippini, G. D'Erasmo, Alexey Krasnoperov, Hiroyuki Fujioka, V. Lucherini, Marco Bregant, A. Feliciello, H. So, Akihisa Toyoda, G. Simonetti, Aldo Zenoni, V. Paticchio, Haruhiko Outa, Tomofumi Maruta, L. Benussi, E. M. Fiore, A. Olin, V. Lenti, F. L. Fabbri, Paola Gianotti, Elena Botta, H. C. Bhang, Tullio Bressani, G. A. Beer, N. Mirfakhrai, O. Hartmann, A. Pantaleo, Stefania Bufalino, F. Pompili, Michelangelo Agnello, Rinaldo Rui, S. Marcello, M. Pallotta, D. Calvo, S. Piano, M., Agnello, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, G., Bonomi, E., Botta, M., Bregant, T., Bressani, S., Bufalino, L., Busso, D., Calvo, Camerini, Paolo, P., Cerello, B., Dalena, F., DE MORI, G., Derasmo, D., DI SANTO, D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, R. A., Fini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, O., Hartmannd, A., Krasnoperov, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, A., Olin, H., Outa, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, So, H, V., Tereshchenko, S., Tomassini, A., Toyoda, R., Wheadon, and A., Zenoni
Subjects: Physics, Nuclear and High Energy Physics, Proton, Resolution (electron density), Nuclear Theory, FOS: Physical sciences, chemistry.chemical_element, Spectral line, Momentum, medicine.anatomical_structure, chemistry, Cluster (physics), medicine, Substructure, Lithium, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Atomic physics, Nuclear Experiment, Nucleus
Abstract: Momenta spectra of protons emitted following the capture of $K^-$ in $^6$Li and $^{12}$C have been measured with 1% resolution. The $^{12}$C spectrum is smooth whereas for $^6$Li a well defined peak appears at about 500 MeV/$c$. The first observation of a structure in this region was identified as a strange tribaryon or, possibly, a $\bar K$-nuclear state. The peak is correlated with a $\pi^-$ coming from $\Sigma^-$ decay in flight, selected by setting momenta larger than 275 MeV/$c$. The $\Sigma^-$ could be produced, together with a 500 MeV/$c$ proton, by the capture of a $K^-$ in a deuteron-cluster substructure of the $^6$Li nucleus. The capture rate for such a reaction is $(1.62\pm 0.23_{stat} ^{+0.71}_{-0.44}(sys))%/K^-_{stop}$, in agreement with the existing observations on $^4$He targets and with the hypothesis that the $^6$Li nucleus can be interpreted as a $(d+\alpha)$ cluster., Comment: 21 pages, 10 figures. Accepted for publication in NPA
Published: 2006

36. First results on (12)(Lambda)C production at DAΦNE

Author: M. Agnello, G. Beer, L. Benussi, M. Bertani, H. C. Bhang, S. Bianco, E. Botta, M. Bregant, T. Bressani, L. Busso, D. Calvo, P. Camerini, M. Caponero, P. Cerello, B. Dalena, F. De Mori, G. D'Erasmo, D. Di Santo, D. Elia, F. L. Fabbri, D. Faso, A. Feliciello, A. Filippi, V. Filippini, R. Fini, M. E. Fiore, H. Fujioka, P. Gianotti, N. Grion, A. Krasnoperov, V. Lucherini, V. Lenti, V. Manzari, S. Marcello, T. Maruta, N. Mirfakhrai, O. Morra, T. Nagae, A. Olin, H. Outa, E. Pace, M. Pallotta, M. Palomba, A. Pantaleo, A. Panzarasa, V. Paticchio, S. Piano, F. Pompili, R. Rui, G. Simonetti, H. So, V. Tereshchenko, S. Tomassini, A. Toyoda, R. Wheadon, A. Zenoni, DONA', ROBERTO, M. Agnello, G. Beer, L. Benussi, M. Bertani, H.C. Bhang, S. Bianco, E. Botta, M. Bregant, T. Bressani, L. Busso, D. Calvo, P. Camerini, M. Caponero, P. Cerello, B. Dalena, F. De Mori, G. D'Erasmo, D. Di Santo, R. Donà, D. Elia, F.L. Fabbri, D. Faso, A. Feliciello, A. Filippi, V. Filippini, R. Fini, M.E. Fiore, H. Fujioka, P. Gianotti, N. Grion, A. Krasnoperov, V. Lucherini, V. Lenti, V. Manzari, S. Marcello, T. Maruta, N. Mirfakhrai, O. Morra, T. Nagae, A. Olin, H. Outa, E. Pace, M. Pallotta, M. Palomba, A. Pantaleo, A. Panzarasa, V. Paticchio, S. Piano, F. Pompili, R. Rui, G. Simonetti, H. So, V. Tereshchenko, S. Tomassini, A. Toyoda, R. Wheadon, and A. Zenoni
Subjects: Phi-factory, hypernuclear spectroscopy, Nuclear Theory, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Lambda-hypernuclei are produced and studied, with the FINUDA spectrometer, for the first time at an e+e- collider: DAPHNE, the Frascati phi-factory. The slow negative kaons from phi(1020) decay are stopped in thin (0.2 g/cm^2) nuclear targets, and Lambda-hypernuclei formation is detected by measuring the momentum of the outgoing pi^-. A preliminary analysis on 12Lambda-C shows an energy resolution of 1.29 MeV FWHM on the hypernuclear levels, the best obtained so far with magnetic spectrometers at hadron facilities. Capture rates for the ground state and the excited ones are reported, and compared with previous experiments.
Published: 2005

37. Hypernuclear physics with FINUDA at Dafne

Author: M. AGNELLO, G. BEER, L. BENUSSI, M. BERTANI, H. C. BHANG, S. BIANCO, E. BOTTA, M. BREGANT, T. BRESSANI, L. BUSSO, D. CALVO, M. CAPONERO, P. CERELLO, B. DALENA, F. DE MORI, G. DERASMO, D. DI SANTO, R. DONA', D. ELIA, F. L. FABBRI, D. FASO, A. FELICIELLO, A. FILIPPI, V. FILIPPINI, R. FINI, E. M. FIORE, H. FUJIOKA, P. GIANOTTI, N. GRION, A. KRASNOPEROV, V. LENTI, V. LUCHERINI, V. MANZARI, S. MARCELLO, T. MARUTA, N. MIRFAKHRAI, O. MORRA, T. NAGAE, H. OUTA, A. OLIN, E. PACE, M. PALLOTTA, M. PALOMBA, A. PANTALEO, A. PANZARASA, V. PATICCHIO, S. PIANO, F. POMPILI, RUI, RINALDO, G. SIMONETTI, H. SO, V. TERESHCHENKO, S. TOMASSINI, A. TOYODA, R. WHEADON, A. ZENONI, CAMERINI, Paolo, M., Agnello, G., Beer, L., Benussi, M., Bertani, H. C., Bhang, S., Bianco, E., Botta, M., Bregant, T., Bressani, L., Busso, D., Calvo, Camerini, Paolo, M., Caponero, P., Cerello, B., Dalena, F., DE MORI, G., Derasmo, D., DI SANTO, R., Dona', D., Elia, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, R., Fini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, A., Krasnoperov, V., Lenti, V., Lucherini, V., Manzari, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, T., Nagae, H., Outa, A., Olin, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, V., Tereshchenko, S., Tomassini, A., Toyoda, R., Wheadon, and A., Zenoni
Published: 2005

38. First results from the FINUDA experiment

Author: M. Bertani, P. Camerini, N. Mirfakhrai, S. Piano, P. Cerello, Stefano Bianco, P. Gianotti, G. D’Erasmo, F. De Mori, G. A. Beer, G. Simonetti, T. Maruta, R. Wheadon, T. Bressani, D. Di Santo, A. Pantaleo, O. Morra, E. Pace, A. Olin, A. Filippi, V. Paticchio, V. Lucherini, L. Benussi, R. Rui, A. Feliciello, D. Faso, L. Busso, F. Pompili, Sandro Tomassini, B. Dalena, F.L. Fabbri, Hiroyuki Fujioka, M. Pallotta, M. Palomba, A. Krasnoperov, V. Filippini, M. Agnello, A. Zenoni, N. Grion, D. Calvo, E. M. Fiore, H. So, E. Botta, S. Marcello, A. Panzarasa, M., Agnello, G., Beer, L., Benussi, M., Bertani, S., Bianco, E., Botta, T., Bressani, L., Busso, D., Calvo, Camerini, Paolo, P., Cerello, B., Dalena, F., DE MORI, G., D'Erasmo, D., DI SANTO, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, A., Krasnoperov, V., Lucherini, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, A., Olin, E., Pace, M., Pallotta, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, H., So, S., Tomassini, R., Wheadon, and A., Zenoni
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Range (particle radiation), Field (physics), Nuclear Theory, High Energy Physics::Experiment, LAMBDA-HYPERNUCLEI, Atomic physics, Nuclear Experiment, Physics::History of Physics
Abstract: This paper provides a summary of the first results obtained by the FINUDA Collaboration in the field of hypernuclear physics. They range from the spectroscopic study of several A-hypernuclei to the observation of some non-mesonic decay modes. Hints on rare hypernuclear two-body decays, on neutron-rich hypernuclei and on deeply-bound kaonic nuclei are also reported.
Published: 2005

39. First results from the FINUDA experiment at DAΦNE

Author: H. Fujioka, A. Zenoni, M. Bertani, G. A. Beer, Tullio Bressani, Rinaldo Rui, A. Olin, P. Gianotti, S. Tomassini, N. Grion, F. De Mori, Michelangelo Agnello, E. Pace, S. Piano, O. Morra, N. Mirfakhrai, G. Simonetti, T. Maruta, R. Wheadon, A. Panzarasa, L. Busso, Paolo Camerini, G. D’Erasmo, D. Calvo, A. Feliciello, D. Faso, P. Cerello, V. Filippini, A. Filippi, F. Pompili, D. Di Santo, V. Paticchio, S. Bianco, A. Pantaleo, L. Benussi, H. So, V. Lucherini, E.M. Fiore, F.L. Fabbri, S. Marcello, Elena Botta, M. Palomba, A. Krasnoperov, B. Dalena, M., Agnello, G., Beer, L., Benussi, M., Bertani, S., Bianco, E., Botta, T., Bressani, L., Busso, D., Calvo, Camerini, Paolo, P., Cerello, B., Dalena, F., DE MORI, G., D'Erasmo, D., DI SANTO, F. L., Fabbri, D., Faso, A., Feliciello, A., Filippi, V., Filippini, E. M., Fiore, H., Fujioka, P., Gianotti, N., Grion, A., Krasnoperov, V., Lucherini, S., Marcello, T., Maruta, N., Mirfakhrai, O., Morra, A., Olin, E., Pace, Pallotta, M, M., Palomba, A., Pantaleo, A., Panzarasa, V., Paticchio, S., Piano, F., Pompili, Rui, Rinaldo, G., Simonetti, So, H, S., Tomassini, R., Wheadon, and A., Zenoni
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Spectrometer, Meson, Detector, Detector calibration, Strangeness, Excitation, Spectral line
Abstract: In spring 2003 the FINUDA detector was installed at the ϕ factory DAΦNE in the Laboratori Nazionali di Frascati of INFN (Italy). In October 2003 the commissioning of the apparatus was accomplished and the first data taking started with a set of nuclear targets 6 Li, 7 Li, nat C, 27 Al, 51 V. The data collection will continue until a total integrated luminosity of 250 pb −1 is recorded. Light and medium A hypernuclei will be abundantly produced by the strangeness exchange reaction induced by the stopped K − coming from the decay of ϕ ( 1020 ) mesons. The aim of the experiment is to simultaneously measure the excitation energy spectra of the produced hypernuclei, with a resolution better than 1 MeV, the lifetime of the Λ embedded in the different hypernuclei and the partial widths Γ π , Γ n p and Γ n n for mesonic and non-mesonic hypernuclear decays. Information on neutron-rich hypernuclei and rare hypernuclear two-body decays might be available too, with the statistics that will be collected at the end of the run. In the present paper, first results concerning in-beam detector calibration, spectrometer performances and very preliminary hypernuclear formation and decay spectra will be presented.
Published: 2005

40. Technical design report for the $\overline{P}$ ANDA (AntiProton Annihilations at Darmstadt) Straw Tube Tracker

Author: W. Erni, I. Keshelashvili, B. Krusche, M. Steinacher, Y. Heng, Z. Liu, H. Liu, X. Shen, Q. Wang, H. Xu, A. Aab, M. Albrecht, J. Becker, A. Csapó, F. Feldbauer, M. Fink, P. Friedel, F. H. Heinsius, T. Held, L. Klask, H. Koch, B. Kopf, S. Leiber, M. Leyhe, C. Motzko, M. Pelizäus, J. Pychy, B. Roth, T. Schröder, J. Schulze, C. Sowa, M. Steinke, T. Trifterer, U. Wiedner, J. Zhong, R. Beck, S. Bianco, K. T. Brinkmann, C. Hammann, F. Hinterberger, D. Kaiser, R. Kliemt, M. Kube, A. Pitka, T. Quagli, C. Schmidt, R. Schmitz, R. Schnell, U. Thoma, P. Vlasov, D. Walther, C. Wendel, T. Würschig, H. G. Zaunick, A. Bianconi, M. Bragadireanu, M. Caprini, D. Pantea, D. Pantelica, D. Pietreanu, L. Serbina, P. D. Tarta, D. Kaplan, T. Fiutowski, M. Idzik, B. Mindur, D. Przyborowski, K. Swientek, B. Czech, M. Kistryn, S. Kliczewski, A. Kozela, P. Kulessa, P. Lebiedowicz, K. Pysz, W. Schäfer, R. Siudak, A. Szczurek, S. Jowzaee, M. Kajetanowicz, B. Kamys, S. Kistryn, G. Korcyl, K. Korcyl, W. Krzemien, A. Magiera, P. Moskal, M. Palka, Z. Rudy, P. Salabura, J. Smyrski, A. Wrońska, I. Augustin, I. Lehmann, D. Nimorus, G. Schepers, M. Al-Turany, R. Arora, H. Deppe, H. Flemming, A. Gerhardt, K. Götzen, A. F. Jordi, G. Kalicy, R. Karabowicz, D. Lehmann, B. Lewandowski, J. Lühning, F. Maas, H. Orth, M. Patsyuk, K. Peters, T. Saito, C. J. Schmidt, L. Schmitt, C. Schwarz, J. Schwiening, M. Traxler, B. Voss, P. Wieczorek, A. Wilms, M. Zühlsdorf, V. M. Abazov, G. Alexeev, A. Arefiev, V. I. Astakhov, M. Yu. Barabanov, B. V. Batyunya, Yu. I. Davydov, V. Kh. Dodokhov, A. A. Efremov, A. G. Fedunov, A. A. Festchenko, A. S. Galoyan, S. Grigoryan, A. Karmokov, E. K. Koshurnikov, V. I. Lobanov, Yu. Yu. Lobanov, A. F. Makarov, L. V. Malinina, V. L. Malyshev, G. A. Mustafaev, A. Olshevskiy, M. A. Pasyuk, E. A. Perevalova, A. A. Piskun, T. A. Pocheptsov, G. Pontecorvo, V. K. Rodionov, Yu. N. Rogov, R. A. Salmin, A. G. Samartsev, M. G. Sapozhnikov, G. S. Shabratova, A. N. Skachkova, N. B. Skachkov, E. A. Strokovsky, M. K. Suleimanov, R. Sh. Teshev, V. V. Tokmenin, V. V. Uzhinsky, A. S. Vodopyanov, S. A. Zaporozhets, N. I. Zhuravlev, A. G. Zorin, D. Branford, D. Glazier, D. Watts, P. Woods, A. Britting, W. Eyrich, A. Lehmann, F. Uhlig, S. Dobbs, Z. Metreveli, K. Seth, A. Tomaradze, T. Xiao, D. Bettoni, V. Carassiti, A. Cotta Ramusino, P. Dalpiaz, A. Drago, E. Fioravanti, I. Garzia, M. Savriè, G. Stancari, N. Bianchi, P. Gianotti, C. Guaraldo, V. Lucherini, D. Orecchini, E. Pace, A. Bersani, G. Bracco, M. Macri, R. F. Parodi, D. Bremer, V. Dormenev, P. Drexler, M. Düren, T. Eissner, K. Föhl, M. Galuska, T. Gessler, A. Hayrapetyan, J. Hu, P. Koch, B. Kröck, W. Kühn, S. Lange, Y. Liang, O. Merle, V. Metag, M. Moritz, D. Münchow, M. Nanova, R. Novotny, B. Spruck, H. Stenzel, T. Ullrich, M. Werner, C. Euan, M. Hoek, D. Ireland, T. Keri, R. Montgomery, D. Protopopescu, G. Rosner, B. Seitz, M. Babai, A. Glazenborg-Kluttig, M. Kavatsyuk, P. Lemmens, M. Lindemulder, H. Löhner, J. Messchendorp, H. Moeini, P. Schakel, F. Schreuder, H. Smit, G. Tambave, J. C. van der Weele, R. Veenstra, H. Sohlbach, M. Büscher, D. Deermann, R. Dosdall, S. Esch, A. Gillitzer, F. Goldenbaum, D. Grunwald, S. Henssler, A. Herten, Q. Hu, G. Kemmerling, H. Kleines, V. Kozlov, A. Lehrach, R. Maier, M. Mertens, H. Ohm, S. Orfanitski, D. Prasuhn, T. Randriamalala, J. Ritman, M. Röder, S. Schadmand, V. Serdyuk, G. Sterzenbach, T. Stockmanns, P. Wintz, P. Wüstner, J. Kisiel, S. Li, Z. Li, Z. Sun, V. Rigato, S. Fissum, K. Hansen, L. Isaksson, M. Lundin, B. Schröder, P. Achenbach, S. Bleser, U. Cahit, M. Cardinali, A. Denig, M. Distler, M. Fritsch, P. Jasinski, D. Kangh, A. Karavdina, W. Lauth, H. Merkel, M. Michel, M. C. Mora Espi, U. Müller, J. Pochodzalla, S. Sanchez, A. Sanchez-Lorente, S. Schlimme, C. Sfienti, M. Thiel, T. Weber, V. I. Dormenev, A. A. Fedorov, M. V. Korzhik, O. V. Missevitch, V. Balanutsa, V. Chernetsky, A. Demekhin, A. Dolgolenko, P. Fedorets, A. Gerasimov, V. Goryachev, V. Varentsov, A. Boukharov, O. Malyshev, I. Marishev, A. Semenov, F. Böhmer, S. Dørheim, B. Ketzer, S. Paul, A. K. Hergemöller, A. Khoukaz, E. Köhler, A. Täschner, J. Wessels, R. Varma, A. Chaterjee, V. Jha, S. Kailas, B. J. Roy, Y. Yan, K. Chinorat, K. Khanchai, L. Ayut, S. Pomrad, E. Baldin, K. Kotov, S. Peleganchuk, Yu. Tikhonov, J. Boucher, V. Chambert, A. Dbeyssi, M. Gumberidze, T. Hennino, M. Imre, R. Kunne, C. Le Galliard, B. Ma, D. Marchand, A. Maroni, S. Ong, B. Ramstein, P. Rosier, E. Tomasi-Gustafsson, J. Van de Wiele, G. Boca, A. Braghieri, S. Costanza, P. Genova, L. Lavezzi, P. Montagna, A. Rotondi, V. Abramov, N. Belikov, A. Davidenko, A. Derevschikov, Y. Goncharenko, V. Grishin, V. Kachanov, D. Konstantinov, V. Kormilitsin, Y. Melnik, A. Levin, N. Minaev, V. Mochalov, D. Morozov, L. Nogach, S. Poslavskiy, A. Ryazantsev, S. Ryzhikov, P. Semenov, I. Shein, A. Uzunian, A. Vasiliev, A. Yakutin, T. Bäck, B. Cederwall, K. Makónyi, P. E. Tegnér, K. M. von Würtemberg, S. Belostotski, G. Gavrilov, A. Itzotov, A. Kashchuk, A. Kisselev, P. Kravchenko, O. Levitskaya, S. Manaenkov, O. Miklukho, Y. Naryshkin, D. Veretennikov, V. Vikhrov, A. Zhadanov, D. Alberto, A. Amoroso, M. P. Bussa, L. Busso, F. De Mori, M. Destefanis, L. Fava, L. Ferrero, M. Greco, M. Maggiora, S. Marcello, S. Sosio, S. Spataro, L. Zotti, D. Calvo, S. Coli, P. De Remigis, A. Filippi, G. Giraudo, S. Lusso, G. Mazza, O. Morra, A. Rivetti, R. Wheadon, F. Iazzi, A. Lavagno, H. Younis, R. Birsa, F. Bradamante, A. Bressan, A. Martin, H. Clement, B. Galander, L. Caldeira Balkeståhl, H. Calén, K. Fransson, T. Johansson, A. Kupsc, P. Marciniewski, E. Thomé, M. Wolke, J. Zlomanczuk, J. Díaz, A. Ortiz, K. Dmowski, P. Duda, R. Korzeniewski, B. Slowinski, A. Chlopik, Z. Guzik, K. Kosinski, D. Melnychuk, A. Wasilewski, M. Wojciechowski, S. Wronka, A. Wysocka, B. Zwieglinski, P. Bühler, O. N. Hartman, P. Kienle, J. Marton, K. Suzuki, E. Widmann, and J. Zmeskal
Subjects: Straw tube, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Computer science, Detector, Tracking (particle physics), 01 natural sciences, Particle identification, NO, Set (abstract data type), Computer Science::Hardware Architecture, 0103 physical sciences, Trajectory, Benchmark (computing), Nuclear Experiment, 010306 general physics, Simulation
Abstract: This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the $\bar{P}$ANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM stations. The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole $\bar{P}$ANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.
Published: 2013
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41. Beam test of a prototype readout system for precision tracking detectors at LHC

Author: L. Jones, K. Gill, R. Payne, Stephen Watts, Michel Raymond, Geoffrey Hall, J. Matheson, R. Wheadon, B. C. MacEvoy, M. Millmore, G. Howell, M.J. French, W. Langhans, D. Vité, Francois Vasey, and G. Stefanini
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Optical fiber, Physics::Instrumentation and Detectors, business.industry, Detector, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Chip, Tracking (particle physics), Line (electrical engineering), law.invention, Optics, CMOS, law, Detectors and Experimental Techniques, business, Instrumentation, Beam (structure)
Abstract: A prototype of a readout system developed for high spatial precision tracking detectors at LHC has been tested in a beam at CERN. It is based on a radiation hard CMOS front-end chip which includes signal amplification, storage in an analogue delay line and a deconvolution filter. Data were transferred from the front-end chip using an analogue fibre optic link employing a novel reflective electro-optic modulator and continuous laser light source remote from the detector. This is the first time such a system has been used in an experimental environment and is the basis of the system proposed for the CMS experiment at LHC.
Published: 1996
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42. A four-dimensional photon detector for PET application

Author: B. Liu, A. Del Guerra, Maria Ionica, Matteo Morrocchi, Maria Giuseppina Bisogni, M.A. Piliero, G. Pirrone, Francesco Pennazio, V. Postolache, R. Wheadon, Giovanni Ambrosi, Piergiorgio Cerello, M. Boretto, and Filippo Bosi
Subjects: gas and liquid scintillators), Photon, Lateral surface, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Instrumentation, Physics::Medical Physics, Physics::Optics, PET PET/CT, 01 natural sciences, Collimated light, 030218 nuclear medicine & medical imaging, Crystal, 03 medical and health sciences, 0302 clinical medicine, Optics, Silicon photomultiplier, EMCCDs etc), 0103 physical sciences, APDs, medicine, Gamma camera, SPECT, PET PET/CT, coronary CT angiography (CTA), Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs etc), Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators), Mathematical Physics, visible and IR photons (solid-state) (PIN diodes, Gamma camera, coronary CT angiography (CTA), Photon detectors for UV, Physics, EBCCDs, medicine.diagnostic_test, 010308 nuclear & particles physics, business.industry, Detector, Si-PMTs, CCDs, scintillation and light emission processes (solid, Positron emission tomography, SPECT, G-APDs, Scintillators, business
Abstract: We analyzed a photon detector for positron emission tomography with high spatial resolution and depth of interaction capability. The detector is composed of a monolithic LYSO scintillator crystal coupled on top and bottom sides to two custom SiPM arrays. We investigated the ability to reconstruct the DOI of the 511 keV photon comparing the number of triggered SiPMs on the two sides of the module. Acquisitions were performed scanning the lateral surface of the crystal with a collimated 511 keV photon beam at different incident positions. A standard deviation of 1.5 mm in depth of interaction was obtained at the center of the module.
Published: 2016
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43. Radiation tolerance studies of silicon microstrip detectors for the LHC

Author: R. Wheadon
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Photon, Large Hadron Collider, Physics::Instrumentation and Detectors, business.industry, Physics::Medical Physics, Detector, Electron, Tracking (particle physics), Nuclear physics, Optics, Radiation damage, Neutron, business, Instrumentation
Abstract: Selected results are presented from the investigations by the RD20 collaboration into the suitability of silicon microstrip detectors for operation as elements of an inner tracking detector for the LHC. Single-sided prototypes covering a wide range of geometries have been irradiated with electrons, neutrons, photons, and protons up to doses of 5 Mrad and fluences of 1015 particles/cm2.
Published: 1994
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44. Feasibility of Silicon strip detectors and low noise multichannel readout system for medical digital radiography

Author: A. E. Cabal, W. Dabrowski, A. Díaz, P. Gryboś, P. Giubellino, L. M. Montaño, L. Ramello, K. Świentek, R. Wheadon, Luis Manuel Montaño Zentina, and Gerardo Herrera Corral
Subjects: Physics, Digital image, Silicon, chemistry, Physics::Instrumentation and Detectors, Detector, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Electronic engineering, chemistry.chemical_element, Flat panel detector, Low noise, Digital radiography
Abstract: A x‐ray detection system based on Silicon strip detectors and low noise multichannel readout system was developed in the framework of the collaboration project. The study of the feasibility of this detector system for medical applications was done. Our system has characteristics that match the requirements of a digital image system.
Published: 2011
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45. Capacitance measurements on silicon microstrip detectors

Author: D. Vité, A. Peisert, S. Masciocchi, R. Wheadon, and C. Ronqvist
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Silicon, Physics::Instrumentation and Detectors, business.industry, chemistry.chemical_element, Particle accelerator, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Capacitance, Particle detector, Microstrip, Semiconductor detector, law.invention, Nuclear Energy and Engineering, chemistry, law, Optoelectronics, High Energy Physics::Experiment, Electrical and Electronic Engineering, business, Ohmic contact
Abstract: The results of capacitance measurements on both the junction and ohmic sides of detectors with various geometries are presented. Double-sided detectors with a second metal layer and different readout patterns are also studied. Measurements are presented of microstrip capacitance after irradiation with both neutrons and photons. These measurements are made as part of the research by the RD20 collaboration into all aspects of the use of silicon microstrips at the Large Hadron Collider at CERN. >
Published: 1993
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46. Calculation of the geometrical capacitance of silicon microstrip structures using a variational approach

Author: G. Hall, D. Vité, and R. Wheadon
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Detector, Mathematical analysis, Charge density, Function (mathematics), STRIPS, Capacitance, Square (algebra), Microstrip, law.invention, law, Instrumentation, Diode
Abstract: A lower limit to the capacitance of strip-like detectors, for example microstrips, is set by the geometrical capacitance of the electrodes. It is important to estimate this accurately so that proper account can be taken of additional effects such as surface charge layers in the device. We present a method for the calculation of multi-strip structure capacitances based on a variational technique which avoids the need to solve Poisson's equation numerically in two dimensions for the structure in question. Instead, the solution is achieved starting from an approximate charge distribution function. This method is both simple to implement and efficient to run. Experimental results from two types of test device are presented and compared with the calculations. Firstly, microstrip structures were produced, varying both width and pitch. Secondly, 5 mm square diodes with their surfaces divided into connected strips have been produced with a range of different strip pitches.
Published: 1993
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47. Study of the K[sub stop][sup −]A→Σ[sup ±]π[sup ∓]Aʹ reaction at DAΦNE

Author: M. Agnello, L. Benussi, M. Bertani, H. C. Bhang, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, B. Dalena, F. De Mori, G. D’Erasmo, F. L. Fabbri, A. Feliciello, A. Filippi, E. M. Fiore, A. Fontana, H. Fujioka, P. Genova, P. Gianotti, N. Grion, V. Lucherini, S. Marcello, N. Mirfakhrai, F. Moia, P. Montagna, O. Morra, T. Nagae, H. Outa, A. Pantaleo, V. Paticchio, S. Piano, R. Rui, G. Simonetti, R. Wheadon, A. Zenoni, Juan M. Nieves, Eulogio Oset, and Manuel J. Vicente-Vacas
Subjects: Physics, Nuclear physics, Pion, Spectrometer, Hyperon
Abstract: This work describes an experimental study of the Kstop−A→π±Σ∓A′ reaction performed with the FINUDA spectrometer at the DAΦNE φ-factory. The reaction is studied via the detection of π+π−n events on 6,7Li, 9Be, 13C and 16O.
Published: 2010
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48. Radiation damage by neutrons and protons to silicon detectors

Author: R. Wheadon, Paolo Giubellino, S. Roe, Geoffrey Hall, Luciano Ramello, S. Sotthibandhu, and K. Gill
Subjects: Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, Doping, chemistry.chemical_element, Radiation, Microstrip, chemistry, Radiation damage, Optoelectronics, Neutron, business, Instrumentation, Leakage (electronics), Diode
Abstract: Observations have been made of the behaviour of silicon diodes and microstrip detectors after exposures of up to 2 × 10 14 neutrons cm −2 and 4 Mrad 60 Co photons. Results are presented on leakage currents and doping concentration of the substrate material of neutron damaged devices. Important changes in the effective doping of the substrate have been observed to take place during the room temperature annealing of the material, particularly after high neutron fluences. Over times of more than one year further doping changes occur which increase the depletion voltage of type inverted material and may set an ultimate lifetime limit for silicon detectors in future hadron colliders. Measurements have been made of the performance of double sided microstrip detectors constructed using a field plate isolation technique on the n-type surface. After high doses of both neutrons and photons good interstrip isolation is maintained. demonstrating one potential technique for radiation tolerant microstrip fabrication.
Published: 1992
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49. Physics Performance Report for: PANDA. Strong Interaction Studies with Antiprotons

Author: PANDA Collaboration, W. Erni, I. Keshelashvili, B. Krusche, M. Steinacher, Y. Heng, Z. Liu, H. Liu, X. Shen, O. Wang, H. Xu, J. Becker, F. Feldbauer, F. -H. Heinsius, T. Held, H. Koch, B. Kopf, M. Pelizaeus, T. Schroeder, M. Steinke, U. Wiedner, J. Zhong, A. Bianconi, M. Bragadireanu, D. Pantea, A. Tudorache, V. Tudorache, M. De Napoli, F. Giacoppo, G. Raciti, E. Rapisarda, C. Sfienti, E. Bialkowski, A. Budzanowski, B. Czech, M. Kistryn, S. Kliczewski, A. Kozela, P. Kulessa, K. Pysz, W. Schaefer, R. Siudak, A. Szczurek, W. Czy. zycki, M. Domagala, M. Hawryluk, E. Lisowski, F. Lisowski, L. Wojnar, D. Gil, P. Hawranek, B. Kamys, St. Kistryn, K. Korcyl, W. Krzemien, A. Magiera, P. Moskal, Z. Rudy, P. Salabura, J. Smyrski, A. Wronska, M. Al-Turany, I. Augustin, H. Deppe, H. Flemming, J. Gerl, K. Goetzen, R. Hohler, D. Lehmann, B. Lewandowski, J. Luehning, F. Maas, D. Mishra, H. Orth, K. Peters, T. Saito, G. Schepers, C. J. Schmidt, L. Schmitt, C. Schwarz, B. Voss, P. Wieczorek, A. Wilms, K. -T. Brinkmann, H. Freiesleben, R. Jaekel, R. Kliemt, T. Wuerschig, H. -G. Zaunick, V. M. Abazov, G. Alexeev, A. Arefiev, V. I. Astakhov, M. Yu. Barabanov, B. V. Batyunya, Yu. I. Davydov, V. Kh. Dodokhov, A. A. Efremov, A. G. Fedunov, A. A. Feshchenko, A. S. Galoyan, S. Grigoryan, A. Karmokov, E. K. Koshurnikov, V. Ch. Kudaev, V. I. Lobanov, Yu. Yu. Lobanov, A. F. Makarov, L. V. Malinina, V. L. Malyshev, G. A. Mustafaev, A. Olshevski, M. A. . Pasyuk, E. A. Perevalova, A. A. Piskun, T. A. Pocheptsov, G. Pontecorvo, V. K. Rodionov, Yu. N. Rogov, R. A. Salmin, A. G. Samartsev, M. G. Sapozhnikov, A. Shabratova, G. S. Shabratova, A. N. Skachkova, N. B. Skachkov, E. A. Strokovsky, M. K. Suleimanov, R. Sh. Teshev, V. V. Tokmenin, V. V. Uzhinsky, A. S. Vodopianov, S. A. Zaporozhets, N. I. Zhuravlev, A. G. Zorin, D. Branford, K. Foehl, D. Glazier, D. Watts, P. Woods, W. Eyrich, A. Lehmann, A. Teufel, S. Dobbs, Z. Metreveli, K. Seth, B. Tann, A. Tomaradze, D. Bettoni, V. Carassiti, A. Cecchi, P. Dalpiaz, E. Fioravanti, I. Garzia, M. Negrini, M. Savri`e, G. Stancari, B. Dulach, P. Gianotti, C. Guaraldo, V. Lucherini, E. Pace, A. Bersani, M. Macri, M. Marinelli, R. F. Parodi, I. Brodski, W. Doering, P. Drexler, M. Dueren, Z. Gagyi-Palffy, A. Hayrapetyan, M. Kotulla, W. Kuehn, S. Lange, M. Liu, V. Metag, M. Nanova, R. Novotny, C. Salz, J. Schneider, P. Schoenmeier, R. Schubert, S. Spataro, H. Stenzel, C. Strackbein, M. Thiel, U. Thoering, S. Yang, T. Clarkson, E. Cowie, E. Downie, G. Hill, M. Hoek, D. Ireland, R. Kaiser, T. Keri, I. Lehmann, K. Livingston, S. Lumsden, D. MacGregor, B. McKinnon, M. Murray, D. Protopopescu, G. Rosner, B. Seitz, G. Yang, M. Babai, A. K. Biegun, A. Bubak, E. Guliyev, V. S. Jothi, M. Kavatsyuk, H. Loehner, J. Messchendorp, H. Smit, J. C. van der Weele, F. Garcia, D. -O. Riska, M. Buescher, R. Dosdall, R. Dzhygadlo, A. Gillitzer, D. Grunwald, V. Jha, G. Kemmerling, H. Kleines, A. Lehrach, R. Maier, M. Mertens, H. Ohm, D. Prasuhn, T. Randriamalala, J. Ritman, M. Roeder, T. Stockmanns, P. Wintz, P. Wuestner, J. Kisiel, S. Li, Z. Li, Z. Sun, S. Fissum, K. Hansen, L. Isaksson, M. Lundin, B. Schroeder, P. Achenbach, M. C. Mora Espi, J. Pochodzalla, S. Sanchez, A. Sanchez-Lorente, V. I. Dormenev, A. A. Fedorov, M. V. Korzhik, O. V. Missevitch, V. Balanutsa, V. Chernetsky, A. Demekhin, A. Dolgolenko, P. Fedorets, A. Gerasimov, V. Goryachev, A. Boukharov, O. Malyshev, I. Marishev, A. Semenov, C. Hoeppner, B. Ketzer, I. Konorov, A. Mann, S. Neubert, S. Paul, Q. Weitzel, A. Khoukaz, T. Rausmann, A. Taeschner, J. Wessels, R. Varma, E. Baldin, K. Kotov, S. Peleganchuk, Yu. Tikhonov, J. Boucher, T. Hennino, R. Kunne, S. Ong, J. Pouthas, B. Ramstein, P. Rosier, M. Sudol, J. Van de Wiele, T. Zerguerras, K. Dmowski, R. Korzeniewski, D. Przemyslaw, B. Slowinski, G. Boca, A. Braghieri, S. Costanza, A. Fontana, P. Genova, L. Lavezzi, P. Montagna, A. Rotondi, N. I. Belikov, A. M. Davidenko, A. A. Derevschikov, Y. M. Goncharenko, V. N. Grishin, V. A. Kachanov, D. A. Konstantinov, V. A. Kormilitsin, V. I. Kravtsov, Y. A. Matulenko, Y. M. Melnik, A. P. Meschanin, N. G. Minaev, V. V. Mochalov, D. A. Morozov, L. V. Nogach, S. B. Nurushev, A. V. Ryazantsev, P. A. Semenov, L. F. Soloviev, A. V. Uzunian, A. N. Vasiliev, A. E. Yakutin, T. Baeck, B. Cederwall, C. Bargholtz, L. Geren, P. E. Tegner, S. Belostotski, G. Gavrilov, A. Itzotov, A. Kisselev, P. Kravchenko, S. Manaenkov, O. Miklukho, Y. Naryshkin, D. Veretennikov, V. Vikhrov, A. Zhadanov, L. Fava, D. Panzieri, D. Alberto, A. Amoroso, E. Botta, T. Bressani, S. Bufalino, M. P. Bussa, L. Busso, F. De Mori, M. Destefanis, L. Ferrero, A. Grasso, M. Greco, T. Kugathasan, M. Maggiora, S. Marcello, G. Serbanut, S. Sosio, R. Bertini, D. Calvo, S. Coli, P. De Remigis, A. Feliciello, A. Filippi, G. Giraudo, G. Mazza, A. Rivetti, K. Szymanska, F. Tosello, R. Wheadon, O. Morra, M. Agnello, F. Iazzi, R. Birsa, F. Bradamante, A. Bressan, A. Martin, H. Clement, C. Ekstroem, H. Calen, S. Grape, B. Hoeistad, T. Johansson, A. Kupsc, P. Marciniewski, E. Thome, J. Zlomanczuk, J. Diaz, A. Ortiz, S. Borsuk, A. Chlopik, Z. Guzik, J. Kopec, T. Kozlowski, D. Melnychuk, M. Plominski, J. Szewinski, K. Traczyk, B. Zwieglinski, P. Buehler, A. Gruber, P. Kienle, J. Marton, E. Widmann, J. Zmeskal, M. F. M. Lutz, B. Pire, O. Scholten, and R. Timmermans
Subjects: Physics::Instrumentation and Detectors, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of strange and charm quarks and nucleon structure studies will be performed with unprecedented accuracy thereby allowing high-precision tests of the strong interaction. The proposed PANDA detector is a state-of-the art internal target detector at the HESR at FAIR allowing the detection and identification of neutral and charged particles generated within the relevant angular and energy range. This report presents a summary of the physics accessible at PANDA and what performance can be expected.
Published: 2009

50. Practical limitations to the performance of silicon drift chambers imposed by material quality

Author: Geoffrey Hall, S. Roe, R. Wheadon, B.S. Avset, and L. Evensen
Subjects: Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, chemistry.chemical_element, STRIPS, law.invention, Anode, Optics, chemistry, law, Position (vector), Material quality, Resistor, business, Instrumentation, Pulse height
Abstract: Silicon drift chambers with subdivided anode structures intended for two-dimensional position measurement have been produced. These devices use implanted resistor chains to form the drift and have orthogonal strips on the reverse side intended for self-triggering capability. An important consequence of the design is that low drift fields must be used (≤ about 70 V/cm). We present results based on detailed position-response studies which show significant distortions of both pulse height and drift time characteristics. The causes of the distortions will be considered.
Published: 1991
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