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104 results on '"Ripiccini, E."'

1. Detailed analysis of chemical corrosion of ultra-thin wires used in drift chamber detectors

Author

Baldini, A. M., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Cocciolo, G., Corvaglia, A., Cuna, F., Francesconi, M., Galli, L., Grancagnolo, F., Grassi, M., Ishak, R., Meucci, M., Nicoló, D., Panareo, M., Papa, A., Pepino, A., Raffaelli, F., Renga, F., Ripiccini, E., Signorelli, G., Tassielli, G. F., Valentini, R., and Voena, C.

Subjects
Physics - Instrumentation and Detectors
Abstract

Ultra-thin metallic anodic and cathodic wires are frequently employed in low-mass gaseous detectors for precision experiments, where the amount of material crossed by charged particles must be minimised. We present here the results of an analysis of the mechanical stress and chemical corrosion effects observed in $40$ and $50~{\rm{\mu m}}$ diameter silver plated aluminum wires mounted within the volume of the MEG\,II drift chamber, which caused the breaking of about one hundred wires (over a total of $\approx 12000$). This analysis is based on the accurate inspection of the broken wires by means of optical and electronic microscopes and on a detailed recording of all breaking accidents. We present a simple empirical model which relates the number of broken wires to their exposure time to atmospheric humidity and to their mechanical tension, which is necessary for mechanical stability in the presence of electrostatic fields of several kV/cm. Finally we discuss how wire breakings can be avoided or at least strongly reduced by operating in controlled atmosphere during the mounting stages of the wires within the drift chamber and by choosing a $25\,\%$ thicker wire diameter, which has very small effects on the detector resolution and efficiency and can be obtained by using a safer fabrication technique., Comment: 14 pages, 9 figures

Published
2021
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2. The TT-PET Data Acquisition and Trigger System

Author

Bandi, Y., Favre, Y., Ferrere, D., Forshaw, D., Hanni, R., Hayakawa, D., Iacobucci, G., Lutz, P., Miucci, A., Paolozzi, L., Ripiccini, E., Tognina, C., Valerio, P., and Weber, M.

Subjects
Physics - Instrumentation and Detectors, Physics - Applied Physics
Abstract

This paper describes the data acquisition and trigger system of the Thin Time-of-flight PET (TT-PET) scanner. The system is designed to read out in the order of 1000 pixel sensors used in the scanner and to provide a reference timing signal to each sensor in order to measure time differences of better than 30 ps. This clock distribution is measured to have a jitter of less than 4 ps at the sensors. Collected data is locally processed before being forwarded to storage. Data flow as well as control, configuration and monitoring aspects are are also addressed.

Published
2018

3. Gas Distribution and Monitoring for the Drift Chamber of the MEG-II Experiment

Author

Baldini, A. M., Baracchini, E., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Francesconi, M., Galli, L., Grancagnolo, F., Grassi, M., Hildebrandt, M., Martinelli, V., Meucci, M., Nicolò, D., Panareo, M., Papa, A., Pepino, A., Pruneti, B., Raffaelli, F., Renga, F., Ripiccini, E., Signorelli, G., Tassielli, G. F., and Voena, C.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The reconstruction of the positron trajectory in the MEG-II experiment searching for the $\mu^+ \to e^+ \gamma$ decay uses a cylindrical drift chamber operated with a helium-isobutane gas mixture. A stable performance of the detector in terms of its electron drift properties, avalanche multiplication, and with a gas mixture of controlled composition and purity has to be provided and continuously monitored. In this paper we describe the strategies adopted to meet the requirements imposed by the target sensitivity of MEG-II, including the construction and commissioning of a small chamber for an online monitoring of the gas quality., Comment: 12 pages, 6 figures, submitted to Journal of Instrumentation

Published
2018
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4. Test beam measurement of the first prototype of the fast silicon pixel monolithic detector for the TT-PET project

Author

Paolozzi, L., Bandi, Y., Benoit, M., Cardarelli, R., Débieux, S., Forshaw, D., Hayakawa, D., Iacobucci, G., Kaynak, M., Miucci, A., Nessi, M., Ratib, O., Ripiccini, E., Rücker, H., Valerio, P., and Weber, M.

Subjects
Physics - Instrumentation and Detectors
Abstract

The TT-PET collaboration is developing a PET scanner for small animals with 30 ps time-of-flight resolution and sub-millimetre 3D detection granularity. The sensitive element of the scanner is a monolithic silicon pixel detector based on state-of-the-art SiGe BiCMOS technology. The first ASIC prototype for the TT-PET was produced and tested in the laboratory and with minimum ionizing particles. The electronics exhibit an equivalent noise charge below 600 e- RMS and a pulse rise time of less than 2 ns, in accordance with the simulations. The pixels with a capacitance of 0.8 pF were measured to have a detection efficiency greater than 99% and, although in the absence of the post-processing, a time resolution of approximately 200 ps.

Published
2018
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5. The design of the MEG II experiment

Author

Baldini, A. M., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Cocciolo, G., Corvaglia, A., de Bari, A., De Gerone, M., D'Onofrio, A., Francesconi, M., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Grigoriev, D. N., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwai, R., Iwamoto, T., Kaneko, D., Kasami, K., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Libeiro, T., Maki, M., Matsuzawa, N., Mihara, S., Milgie, M., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Nakao, M., Nakaura, S., Nicoló, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Signorelli, G., Simonetta, M., Tassielli, G. F., Uchiyama, Y., Usami, M., Venturini, M., Voena, C., Yoshida, K., Yudin, Yu. V., and Zhang, Y.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The MEG experiment, designed to search for the mu+->e+ gamma decay at a 10^-13 sensitivity level, completed data taking in 2013. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of 6 x 10-14 for the branching ratio, a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance., Comment: 61 pages and 97 figures

Published
2018
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6. The Quest for $\mu \to e \gamma$ and its Experimental Limiting Factors at Future High Intensity Muon Beams

Author

Cavoto, G., Papa, A., Renga, F., Ripiccini, E., and Voena, C.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The search for the Lepton Flavor Violating decay mu into e gamma will reach an unprecedented level of sensitivity within the next five years thanks to the MEG-II experiment. This experiment will take data at the Paul Scherrer Institut where continuous muon beams are delivered at a rate of about 10^8 muons per second. On the same time scale, accelerator upgrades are expected in various facilities, making it feasible to have continuous beams with an intensity of 10^9 or even 10^10 muons per second. We investigate the experimental limiting factors that will define the ultimate performances, and hence the sensitivity, in the search for mu into e gamma with a continuous beam at these extremely high rates. We then consider some conceptual detector designs and evaluate the corresponding sensitivity as a function of the beam intensity., Comment: 16 pages, 8 figure

Published
2017
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7. Single-hit resolution measurement with MEG II drift chamber prototypes

Author

Baldini, A. M., Baracchini, E., Cavoto, G., Cascella, M., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Dussoni, S., Galli, L., Grancagnolo, F., Grassi, M., Martinelli, V., Nicolò, D., Panareo, M., Pepino, A., Piredda, G., Renga, F., Ripiccini, E., Signorelli, G., Tassielli, G. F., Tenchini, F., Venturini, M., and Voena, C.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

Drift chambers operated with helium-based gas mixtures represent a common solution for tracking charged particles keeping the material budget in the sensitive volume to a minimum. The drawback of this solution is the worsening of the spatial resolution due to primary ionisation fluctuations, which is a limiting factor for high granularity drift chambers like the MEG II tracker. We report on the measurements performed on three different prototypes of the MEG II drift chamber aimed at determining the achievable single-hit resolution. The prototypes were operated with helium/isobutane gas mixtures and exposed to cosmic rays, electron beams and radioactive sources. Direct measurements of the single hit resolution performed with an external tracker returned a value of 110 $\mu$m, consistent with the values obtained with indirect measurements performed with the other prototypes., Comment: 18 pages, 18 figures

Published
2016
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8. Muon polarization in the MEG experiment: predictions and measurements

Author

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiarello, G., Chiri, C., De Bari, A., De Gerone, M., DÓnofrio, A., Dussoni, S., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Mihara, S., Molzon, W., Mori, T., Mtchedlishvili, A., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Tassielli, G., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., and Yudin, Y. V.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The MEG experiment makes use of one of the world's most intense low energy muon beams, in order to search for the lepton flavour violating process $\mu^{+} \rightarrow {\rm e}^{+} \gamma$. We determined the residual beam polarization at the thin stopping target, by measuring the asymmetry of the angular distribution of Michel decay positrons as a function of energy. The initial muon beam polarization at the production is predicted to be $P_{\mu} = -1$ by the Standard Model (SM) with massless neutrinos. We estimated our residual muon polarization to be $P_{\mu} = -0.85 \pm 0.03 ~ {\rm (stat)} ~ { }^{+ 0.04}_{-0.05} ~ {\rm (syst)}$ at the stopping target, which is consistent with the SM predictions when the depolarizing effects occurring during the muon production, propagation and moderation in the target are taken into account. The knowledge of beam polarization is of fundamental importance in order to model the background of our ${\megsign}$ search induced by the muon radiative decay: $\mu^{+} \rightarrow {\rm e}^{+} \bar{\nu}_{\mu} \nu_{\rm e} \gamma$.

Published
2015
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10. Study of the single cluster response of a helium-isobutane drift chamber prototype using 8 keV X-rays

Author

Cavoto, G., Dabagov, S., Hampai, D., Piredda, G., Renga, F., Ripiccini, E., and Voena, C.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The identification of single clusters in the electronic signals produced by ionizing particles within a drift chamber is expected to significantly improve the performances of this kind of detectors in terms of particle identification capabilities and space resolution. In order to develop refined cluster recognition algorithms, it is essential to measure the response of the chamber and its electronics to single ionization clusters. This can be done by irradiating the chamber with X-rays. We report here on the studies performed on a drift chamber prototype for the MEG-II experiment at the X-ray facility of the INFN Frascati's National Laboratories "XLab Frascati". The prototype is operated with a helium-isobutane mixture and instrumented with high bandwidth custom pre-amplifiers. The results of this study have been used to develop an innovative method for cluster recognition, based on the Wiener filter technique. As a side measurement, we also performed a study of the gas gain in a configuration which is similar to that of the MEG-II experiment., Comment: 11 pages, 10 figures

Published
2014
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11. Measurement of the radiative decay of polarized muons in the MEG experiment

Author

MEG Collaboration, Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiarello, G., Chiri, C., de Bari, A., De Gerone, M., D'Onofrio, A., Dussoni, S., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, Tae Im, Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Mihara, S., Molzon, W., Mori, Toshinori, Mtchedlishvili, A., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., and Yudin, Yu. V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

We studied the radiative muon decay $\mu^+ \to e^+\nu\bar{\nu}\gamma$ by using for the first time an almost fully polarized muon source. We identified a large sample (~13000) of these decays in a total sample of 1.8x10^14 positive muon decays collected in the MEG experiment in the years 2009--2010 and measured the branching ratio B($\mu^+ \to e^+\nu\bar{\nu}\gamma$) = (6.03+-0.14(stat.)+-0.53(sys.))x10^-8 for E_e > 45 MeV and E_{\gamma} > 40 MeV, consistent with the Standard Model prediction. The precise measurement of this decay mode provides a basic tool for the timing calibration, a normalization channel, and a strong quality check of the complete MEG experiment in the search for $\mu^+ \to e^+\gamma$ process., Comment: 8 pages, 7 figures. Added an introduction to NLO calculation which was recently calculated. Published version

Published
2013
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12. IRIDE White Book, An Interdisciplinary Research Infrastructure based on Dual Electron linacs&lasers

Author

Alesini, D., Alessandroni, M., Anania, M. P., Andreas, S., Angelone, M., Arcovito, A., Arnesano, F., Artioli, M., Avaldi, L., Babusci, D., Bacci, A., Balerna, A., Bartalucci, S., Bedogni, R., Bellaveglia, M., Bencivenga, F., Benfatto, M., Biedron, S., Bocci, V., Bolognesi, M., Bolognesi, P., Boni, R., Bonifacio, R., Boscolo, M., Boscherini, F., Bossi, F., Broggi, F., Buonomo, B., Calo', V., Catone, D., Capogni, M., Capone, M., Castellano, M., Castoldi, A., Catani, L., Cavoto, G., Cherubini, N., Chirico, G., Cestelli-Guidi, M., Chiadroni, E., Chiarella, V., Cianchi, A., Cianci, M., Cimino, R., Ciocci, F., Clozza, A., Collini, M., Colo', G., Compagno, A., Contini, G., Coreno, M., Cucini, R., Curceanu, C., Dabagov, S., Dainese, E., Davoli, I., Dattoli, G., De Caro, L., De Felice, P., Della Longa, S., Monache, G. Delle, De Spirito, M., Di Cicco, A., Di Donato, C., Di Gioacchino, D., Di Giovenale, D., Di Palma, E., Di Pirro, G., Dodaro, A., Doria, A., Dosselli, U., Drago, A., Escribano, R., Esposito, A., Faccini, R., Ferrari, A., Ferrario, M., Filabozzi, A., Filippetto, D., Fiori, F., Frasciello, O., Fulgentini, L., Gallerano, G. P., Gallo, A., Gambaccini, M., Gatti, C., Gatti, G., Gauzzi, P., Ghigo, A., Ghiringhelli, G., Giannessi, L., Giardina, G., Giannini, C., Giorgianni, F., Giovenale, E., Gizzi, L., Guaraldo, C., Guazzoni, C., Gunnella, R., Hatada, K., Ivashyn, S., Jegerlehner, F., Keeffe, P. O., Kluge, W., Kupsc, A., Iannone, M., Labate, L., Sandri, P. Levi, Lombardi, V., Londrillo, P., Loreti, S., Losacco, M., Lupi, S., Macchi, A., Magazu', S., Mandaglio, G., Marcelli, A., Margutti, G., Mariani, C., Mariani, P., Marzo, G., Masciovecchio, C., Masjuan, P., Mattioli, M., Mazzitelli, G., Merenkov, N. P., Michelato, P., Migliardo, F., Migliorati, M., Milardi, C., Milotti, E., Milton, S., Minicozzi, V., Mobilio, S., Morante, S., Moricciani, D., Mostacci, A., Muccifora, V., Murtas, F., Musumeci, P., Nguyen, F., Orecchini, A., Organtini, G., Ottaviani, P. L., Pace, E., Paci, M., Pagani, C., Pagnutti, S., Palmieri, V., Palumbo, L., Panaccione, G. C., Papadopoulos, C. F., Papi, M., Passera, M., Pasquini, L., Pedio, M., Perrone, A., Petralia, A., Petrillo, C., Petrillo, V., Pillon, M., Pierini, P., Pietropaolo, A., Polosa, A. D., Pompili, R., Portoles, J., Prosperi, T., Quaresima, C., Quintieri, L., Rau, J. V., Reconditi, M., Ricci, A., Ricci, R., Ricciardi, G., Ripiccini, E., Romeo, S., Ronsivalle, C., Rosato, N., Rosenzweig, J. B., Rossi, G., Rossi, A. A., Rossi, A. R., Rossi, F., Russo, D., Sabatucci, A., Sabia, E., Sacchetti, F., Salducco, S., Sannibale, F., Sarri, G., Scopigno, T., Serafini, L., Sertore, D., Shekhovtsova, O., Spassovsky, I., Spadaro, T., Spataro, B., Spinozzi, F., Stecchi, A., Stellato, F., Surrenti, V., Tenore, A., Torre, A., Trentadue, L., Turchini, S., Vaccarezza, C., Vacchi, A., Valente, P., Venanzoni, G., Vescovi, S., Villa, F., Zanotti, G., Zema, N., and Zobov, M.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Physics - Accelerator Physics
Abstract

This report describes the scientific aims and potentials as well as the preliminary technical design of IRIDE, an innovative tool for multi-disciplinary investigations in a wide field of scientific, technological and industrial applications. IRIDE will be a high intensity 'particle factory', based on a combination of a high duty cycle radio-frequency superconducting electron linac and of high energy lasers. Conceived to provide unique research possibilities for particle physics, for condensed matter physics, chemistry and material science, for structural biology and industrial applications, IRIDE will open completely new research possibilities and advance our knowledge in many branches of science and technology. IRIDE will contribute to open new avenues of discoveries and to address most important riddles: What does matter consist of? What is the structure of proteins that have a fundamental role in life processes? What can we learn from protein structure to improve the treatment of diseases and to design more efficient drugs? But also how does an electronic chip behave under the effect of radiations? How can the heat flow in a large heat exchanger be optimized? The scientific potential of IRIDE is far reaching and justifies the construction of such a large facility in Italy in synergy with the national research institutes and companies and in the framework of the European and international research. It will impact also on R&D work for ILC, FEL, and will be complementarity to other large scale accelerator projects. IRIDE is also intended to be realized in subsequent stages of development depending on the assigned priorities., Comment: 270 pages

Published
2013

13. The MEG detector for ${\mu}+\to e+{\gamma}$ decay search

Author

Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Corbo, M., Curalli, N., De Bari, A., De Gerone, M., Del Frate, L., Doke, S., Dussoni, S., Egger, J., Fratini, K., Fujii, Y., Galli, L., Galeotti, S., Gallucci, G., Gatti, F., Golden, B., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hisamatsu, M. Hildebrandt Y., Ignatov, F., Iwamoto, T., Kaneko, D., Kasami, K., Kettle, P. -R., Khazin, B. I., Korenchenko, O. Kiselev A., Kravchuk, N., Lim, G., Maki, A., Mihara, S., Molzon, W., Mori, T., Morsani, F., Mzavia, D., Nardò, R., Natori, H., Nicolò, D., Nishiguchi, H., Ootani, Y. Nishimura W., Ozone, K., Panareo, M., Papa, A., Pazzi, R., Piredda, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Sawada, R., Schneebeli, M., Sergiampietri, F., Signorelli, G., Suzuki, S., Tenchini, F., Topchyan, C., Uchiyama, Y., Voena, R. Valle C., Xiao, F., Yamada, S., Yamamoto, S., Yamashita, S., Yudin, Yu. V., and Zanello, D.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The MEG (Mu to Electron Gamma) experiment has been running at the Paul Scherrer Institut (PSI), Switzerland since 2008 to search for the decay \meg\ by using one of the most intense continuous $\mu^+$ beams in the world. This paper presents the MEG components: the positron spectrometer, including a thin target, a superconducting magnet, a set of drift chambers for measuring the muon decay vertex and the positron momentum, a timing counter for measuring the positron time, and a liquid xenon detector for measuring the photon energy, position and time. The trigger system, the read-out electronics and the data acquisition system are also presented in detail. The paper is completed with a description of the equipment and techniques developed for the calibration in time and energy and the simulation of the whole apparatus., Comment: 59 pages, 90 figures

Published
2013
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14. New constraint on the existence of the mu+-> e+ gamma decay

Author

MEG Collaboration, Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., de Bari, A., De Gerone, M., Doke, T., Dussoni, S., Egger, J., Fratini, K., Fujii, Y., Galli, L., Gallucci, G., Gatti, F., Golden, B., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hisamatsu, Y., Ignatov, F., Iwamoto, T., Kaneko, D., Kettle, P. -R., Khazin, B. I., Khomotov, N., Kiselev, O., Korenchenko, A., Kravchuk, N., Lim, G., Maki, A., Mihara, S., Molzon, W., Mori, T., Mzavia, D., Nardo, R., Natori, H., Nicolo, D., Nishiguchi, H., Nishimura, Y., Ootani, W., Panareo, M., Papa, A., Pazzi, R., Piredda, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Sawada, R., Sergiampietri, F., Signorelli, G., Suzuki, S., Tenchini, F., Topchyan, C., Uchiyama, Y., Valle, R., Voena, C., Xiao, F., Yamada, S., Yamamoto, A., Yamashita, S., You, Z., Yudin, Yu. V., and Zanello, D.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The analysis of a combined data set, totaling 3.6 \times 10^14 stopped muons on target, in the search for the lepton flavour violating decay mu^+ -> e^+ gamma is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7 \times 10^-13 (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG., Comment: 5 pages, 3 figures, a version accepted in Phys. Rev. Lett

Published
2013

15. MEG Upgrade Proposal

Author

Baldini, A. M., Cei, F., Cerri, C., Dussoni, S., Galli, L., Grassi, M., Nicolò, D., Raffaelli, F., Sergiampietri, F., Signorelli, G., Tenchini, F., Bagliani, D., De Gerone, M., Gatti, F., Baracchini, E., Fujii, Y., Iwamoto, T., Kaneko, D., Mori, T., Nishimura, M., Ootani, W., Sawada, R., Uchiyama, Y., Boca, G., Cattaneo, P. W., de Bari, A., Nardò, R., Rossella, M., Cascella, M., Grancagnolo, F., L'Erario, A., Maffezzoli, A., Miccoli, A., Onorato, G., Palamà, G., Panareo, M., Pepino, A., Rella, S., Tassielli, G. F., Zavarise, G., Cavoto, G., Graziosi, A., Piredda, G., Ripiccini, E., Voena, C., Grigoriev, D. N., Ignatov, F., Khazin, B. I., Popov, A., Yudin, Yu. V., Haruyama, T., Mihara, S., Nishiguchi, H., Yamamoto, A., Hildebrandt, M., Kettle, P. -R., Papa, A., Renga, F., Ritt, S., Stoykov, A., Kang, T. I., Lim, G., Molzon, W., You, Z., Khomutov, N., Korenchenko, A., Kravchuk, N., and Kuchinksy, N.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We propose the continuation of the MEG experiment to search for the charged lepton flavour violating decay (cLFV) \mu \to e \gamma, based on an upgrade of the experiment, which aims for a sensitivity enhancement of one order of magnitude compared to the final MEG result, down to the $6 \times 10^{-14}$ level. The key features of this new MEG upgrade are an increased rate capability of all detectors to enable running at the intensity frontier and improved energy, angular and timing resolutions, for both the positron and photon arms of the detector. On the positron-side a new low-mass, single volume, high granularity tracker is envisaged, in combination with a new highly segmented, fast timing counter array, to track positron from a thinner stopping target. The photon-arm, with the largest liquid xenon (LXe) detector in the world, totalling 900 l, will also be improved by increasing the granularity at the incident face, by replacing the current photomultiplier tubes (PMTs) with a larger number of smaller photosensors and optimizing the photosensor layout also on the lateral faces. A new DAQ scheme involving the implementation of a new combined readout board capable of integrating the diverse functions of digitization, trigger capability and splitter functionality into one condensed unit, is also under development. We describe here the status of the MEG experiment, the scientific merits of the upgrade and the experimental methods we plan to use., Comment: A. M. Baldini and T. Mori Spokespersons. Research proposal submitted to the Paul Scherrer Institute Research Committee for Particle Physics at the Ring Cyclotron. 131 Pages

Published
2013

18. A new cylindrical drift chamber for the MEG II experiment

Author

Baldini, A.M., Baracchini, E., Berretta, L., Bianucci, S., Cavoto, G., Chiarello, G., Chiri, C., Cei, F., Corvaglia, A., Dussoni, S., Fahrni, D., Galli, L., Grancagnolo, F., Grassi, M., Hofer, A., Hildebrandt, M., Ignatov, F., Miccoli, A., Nicolò, D., Orsini, A., Panareo, M., Pepino, A., Pinto, C., Piredda, G., Signorelli, G., Raffaelli, F., Recchia, L., Renga, F., Ripiccini, E., Tassielli, G., Tazzioli, A., Tenchini, F., Venturini, M., Voena, C., and Zullo, A.

Published
2016
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22. Search for the lepton flavour violating decay μ + → e + γ with the full dataset of the MEG experiment: MEG Collaboration

Author

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P.-R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., and Zanello, D.

Published
2016
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23. Muon polarization in the MEG experiment: predictions and measurements: The MEG Collaboration

Author

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiarello, G., Chiri, C., Bari, A. De, Gerone, M. De, D’Onofrio, A., Dussoni, S., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P.-R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Mihara, S., Molzon, W., Mori, Toshinori, Mtchedlishvili, A., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., and Yudin, Yu. V.

Published
2016
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24. Measurement of the radiative decay of polarized muons in the MEG experiment

Author

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiarello, G., Chiri, C., de Bari, A., De Gerone, M., D’Onofrio, A., Dussoni, S., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, Tae Im, Kettle, P.-R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Mihara, S., Molzon, W., Mori, Toshinori, Mtchedlishvili, A., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., and The MEG Collaboration

Published
2016
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25. Detailed analysis of chemical corrosion of ultra-thin wires used in drift chamber detectors

Author

Baldini, A.M., primary, Cavoto, G., additional, Cei, F., additional, Chiappini, M., additional, Chiarello, G., additional, Chiri, C., additional, Cocciolo, G., additional, Corvaglia, A., additional, Cuna, F., additional, Francesconi, M., additional, Galli, L., additional, Grancagnolo, F., additional, Grassi, M., additional, Ishak, R., additional, Meucci, M., additional, Nicoló, D., additional, Panareo, M., additional, Papa, A., additional, Pepino, A., additional, Raffaelli, F., additional, Renga, F., additional, Ripiccini, E., additional, Signorelli, G., additional, Tassielli, G.F., additional, Valentini, R., additional, and Voena, C., additional

Published
2021
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27. The design of the MEG II experiment

Author

Baldini, A., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cattaneo, P., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Cocciolo, G., Corvaglia, A., Bari, A., Gerone, M., D’Onofrio, A., Francesconi, M., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Grigoriev, D., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwai, R., Iwamoto, T., Kaneko, D., Kasami, K., Kettle, P.R., Khazin, B., Khomutov, N., Korenchenko, A., Kravchuk, N., Libeiro, T., Maki, M., Matsuzawa, N., Mihara, S., Milgie, M., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Nakao, M., Nakaura, S., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Panareo, M., Papa, A., Pepino, A., Piredda, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Signorelli, G., Simonetta, M., Tassielli, G., Uchiyama, Y., Usami, M., Venturini, M., Voena, C., Yoshida, K., Yudin, Yu., and Zhang, Y.

Abstract

The MEG experiment, designed to search for the $${\mu ^+ \rightarrow \hbox {e}^+ \gamma }$$ μ+→e+γ decay, completed data-taking in 2013 reaching a sensitivity level of $${5.3\times 10^{-13}}$$ 5.3×10-13 for the branching ratio. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of $$6\times 10^{-14}$$ 6×10-14 , a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance.

Published
2018

28. The quest for mu to e gamma and its experimental limiting factors at future high intensity muon beams

Author

Cavoto, G., Papa, A., Renga, F., Ripiccini, E., and Voena, C.

Subjects
High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors, engineering (miscellaneous), physics and Astronomy (miscellaneous), lepton flavour violation, Physics::Instrumentation and Detectors, Physics::Accelerator Physics, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract

The search for the Lepton Flavor Violating decay mu into e gamma will reach an unprecedented level of sensitivity within the next five years thanks to the MEG-II experiment. This experiment will take data at the Paul Scherrer Institut where continuous muon beams are delivered at a rate of about 10^8 muons per second. On the same time scale, accelerator upgrades are expected in various facilities, making it feasible to have continuous beams with an intensity of 10^9 or even 10^10 muons per second. We investigate the experimental limiting factors that will define the ultimate performances, and hence the sensitivity, in the search for mu into e gamma with a continuous beam at these extremely high rates. We then consider some conceptual detector designs and evaluate the corresponding sensitivity as a function of the beam intensity., Comment: 16 pages, 8 figure

Published
2018

31. Fast timing monolithic silicon pixel sensor for TOF-PET

Author

Hayakawa, D., primary, Iacobucci, G., additional, Paolozzi, L., additional, Valerio, P., additional, Ripiccini, E., additional, Benoit, M., additional, Ratib, O., additional, Cardarelli, R., additional, Bruno, S., additional, and Caltabiano, A., additional

Published
2019
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32. Characterization of the demonstrator of the fast silicon monolithic ASIC for the TT-PET project

Author

Paolozzi, L., primary, Bandi, Y., additional, Cardarelli, R., additional, Débieux, S., additional, Favre, Y., additional, Ferrère, D., additional, Forshaw, D., additional, Hayakawa, D., additional, Iacobucci, G., additional, Kaynak, M., additional, Miucci, A., additional, Nessi, M., additional, Ripiccini, E., additional, Rücker, H., additional, Valerio, P., additional, and Weber, M., additional

Published
2019
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33. Search for the lepton flavour violating decay μ^+ → e^+ γ with the full dataset of the MEG experiment

Author

Baldini, A.M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P.W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D.N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T.I., Kettle, P.R., Khazin, B.I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G.M.A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G.F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., Zanello, D., Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, Gianluigi, Chiri, Claudio, Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, Marco, Papa, A., Pazzi, R., Pepino, Aurora, Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, GIOVANNI FRANCESCO, Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Y. u. V., and Zanello, D.

Subjects
lepton flavour violating, muons
Abstract

The final results of the search for the lepton flavour violating decay μ+→e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009–2013 and totalling 7.5×1014 stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+→e+γ)

Published
2016

34. Gas distribution and monitoring for the drift chamber of the MEG II experiment

Author

Baldini, A.M., primary, Baracchini, E., additional, Cavoto, G., additional, Cei, F., additional, Chiappini, M., additional, Chiarello, G., additional, Chiri, C., additional, Francesconi, M., additional, Galli, L., additional, Grancagnolo, F., additional, Grassi, M., additional, Hildebrandt, M., additional, Martinelli, V., additional, Meucci, M., additional, Nicolò, D., additional, Panareo, M., additional, Papa, A., additional, Pepino, A., additional, Pruneti, B., additional, Raffaelli, F., additional, Renga, F., additional, Ripiccini, E., additional, Signorelli, G., additional, Tassielli, G.F., additional, and Voena, C., additional

Published
2018
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35. Test beam measurement of the first prototype of the fast silicon pixel monolithic detector for the TT-PET project

Author

Paolozzi, L., primary, Bandi, Y., additional, Benoit, M., additional, Cardarelli, R., additional, Débieux, S., additional, Forshaw, D., additional, Hayakawa, D., additional, Iacobucci, G., additional, Kaynak, M., additional, Miucci, A., additional, Nessi, M., additional, Ratib, O., additional, Ripiccini, E., additional, Rücker, H., additional, Valerio, P., additional, and Weber, M., additional

Published
2018
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36. The TT-PET project: a thin TOF-PET scanner based on fast novel silicon pixel detectors

Author

Bandi, Y., primary, Benoit, M., additional, Cadoux, F. R., additional, Forshaw, D.C., additional, Hänni, R., additional, Hayakawa, D., additional, Iacobucci, G., additional, Michal, S., additional, Miucci, A., additional, Paolozzi, L., additional, Ratib, O., additional, Ripiccini, E., additional, Tognina, C., additional, Valerio, P., additional, and Weber, M., additional

Published
2018
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38. Search for the lepton flavour violating decay μ+→ e+γ with the full dataset of the MEG experiment: MEG Collaboration

Author

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardã², R., Nicolã², D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., and Zanello, D.

Subjects
Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Published
2016

39. New constraint on the existence of the μ+ → e+ γ decay

Author

Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., de Bari, A., De Gerone, M., Doke, T., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, Flavio, Golden, B., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hisamatsu, Y., Ignatov, F., Iwamoto, T., Kaneko, D., Kettle, P. R., Khazin, B. I., Khomotov, N., Kiselev, O., Korenchenko, A., Kravchuk, N., Lim, G., Maki, A., Mihara, S., Molzon, W., Mori, T., Mzavia, D., Nardò, R., Natori, H., Nicolò, D., Nishiguchi, H., Nishimura, Y., Ootani, W., Panareo, M., Papa, A., Piredda, G., Popov, A., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Sawada, R., Sergiampietri, F., Signorelli, G., Suzuki, S., Tenchini, F., Topchyan, C., Uchiyama, Y., Voena, C., Xiao, F., Yamada, S., Yamamoto, A., Yamashita, S., You, Z., Yudin, Y. u. V., Zanello, D., Adam, J, Bai, X, Baldini, A. M, Baracchini, E, Bemporad, C, Boca, G, Cattaneo, P. W, Cavoto, G, Cei, F, Cerri, C, de Bari, A, De Gerone, M, Doke, T, Dussoni, S, Egger, J, Fujii, Y, Galli, L, Gatti, F, Golden, B, Grassi, M, Graziosi, A, Grigoriev, D. N, Haruyama, T, Hildebrandt, M, Hisamatsu, Y, Ignatov, F, Iwamoto, T, Kaneko, D, Kettle, P. R, Khazin, B. I, Khomotov, N, Kiselev, O, Korenchenko, A, Kravchuk, N, Lim, G, Maki, A, Mihara, S, Molzon, W, Mori, T, Mzavia, D, Nardò, R, Natori, H, Nicolò, D, Nishiguchi, H, Nishimura, Y, Ootani, W, Panareo, Marco, Papa, A, Piredda, G, Popov, A, Renga, F, Ripiccini, E, Ritt, S, Rossella, M, Sawada, R, Sergiampietri, F, Signorelli, G, Suzuki, S, Tenchini, F, Topchyan, C, Uchiyama, Y, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, You, Z, Yudin, Yu V, and Zanello, D.

Subjects
Physics and Astronomy (all), Muon, Lepton Flavor Violation
Abstract

The analysis of a combined data set, totaling 3.6 × 10(14) stopped muons on target, in the search for the lepton flavor violating decay μ(+) → e(+)γ is presented. The data collected by the MEG experiment at the Paul Scherrer Institut show no excess of events compared to background expectations and yield a new upper limit on the branching ratio of this decay of 5.7 × 10(-13) (90% confidence level). This represents a four times more stringent limit than the previous world best limit set by MEG.

Published
2013

40. Search for the lepton flavour violating decay $$\mu ^+ \rightarrow \mathrm {e}^+ \gamma $$ μ + → e + γ with the full dataset of the MEG experiment

Author

Baldini, A. M., primary, Bao, Y., additional, Baracchini, E., additional, Bemporad, C., additional, Berg, F., additional, Biasotti, M., additional, Boca, G., additional, Cascella, M., additional, Cattaneo, P. W., additional, Cavoto, G., additional, Cei, F., additional, Cerri, C., additional, Chiarello, G., additional, Chiri, C., additional, Corvaglia, A., additional, de Bari, A., additional, De Gerone, M., additional, Doke, T., additional, D’Onofrio, A., additional, Dussoni, S., additional, Egger, J., additional, Fujii, Y., additional, Galli, L., additional, Gatti, F., additional, Grancagnolo, F., additional, Grassi, M., additional, Graziosi, A., additional, Grigoriev, D. N., additional, Haruyama, T., additional, Hildebrandt, M., additional, Hodge, Z., additional, Ieki, K., additional, Ignatov, F., additional, Iwamoto, T., additional, Kaneko, D., additional, Kang, T. I., additional, Kettle, P.-R., additional, Khazin, B. I., additional, Khomutov, N., additional, Korenchenko, A., additional, Kravchuk, N., additional, Lim, G. M. A., additional, Maki, A., additional, Mihara, S., additional, Molzon, W., additional, Mori, Toshinori, additional, Morsani, F., additional, Mtchedilishvili, A., additional, Mzavia, D., additional, Nakaura, S., additional, Nardò, R., additional, Nicolò, D., additional, Nishiguchi, H., additional, Nishimura, M., additional, Ogawa, S., additional, Ootani, W., additional, Orito, S., additional, Panareo, M., additional, Papa, A., additional, Pazzi, R., additional, Pepino, A., additional, Piredda, G., additional, Pizzigoni, G., additional, Popov, A., additional, Raffaelli, F., additional, Renga, F., additional, Ripiccini, E., additional, Ritt, S., additional, Rossella, M., additional, Rutar, G., additional, Sawada, R., additional, Sergiampietri, F., additional, Signorelli, G., additional, Simonetta, M., additional, Tassielli, G. F., additional, Tenchini, F., additional, Uchiyama, Y., additional, Venturini, M., additional, Voena, C., additional, Yamamoto, A., additional, Yoshida, K., additional, You, Z., additional, Yudin, Yu. V., additional, and Zanello, D., additional

Published
2016
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41. Single-hit resolution measurement with MEG II drift chamber prototypes

Author

Baldini, A.M., primary, Baracchini, E., additional, Cavoto, G., additional, Cascella, M., additional, Cei, F., additional, Chiappini, M., additional, Chiarello, G., additional, Chiri, C., additional, Dussoni, S., additional, Galli, L., additional, Grancagnolo, F., additional, Grassi, M., additional, Martinelli, V., additional, Nicolò, D., additional, Panareo, M., additional, Pepino, A., additional, Piredda, G., additional, Renga, F., additional, Ripiccini, E., additional, Signorelli, G., additional, Tassielli, G.F., additional, Tenchini, F., additional, Venturini, M., additional, and Voena, C., additional

Published
2016
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42. New Constraint on the Existence of the mu(+) -> e(+) gamma Decay

Author

Adam, J, Bai, X, Baldini, Am, Baracchini, E, Bemporad, C, Boca, G, Cattaneo, Pw, Cavoto, G, Cei, Fabrizio, Cerri, C, de Bari, A, De Gerone, M, Doke, T, Dussoni, S, Egger, J, Fujii, Y, Galli, L, Gatti, F, Golden, B, Grassi, M, Graziosi, A, Grigoriev, Dn, Haruyama, T, Hildebrandt, M, Hisamatsu, Y, Ignatov, F, Iwamoto, T, Kaneko, D, Kettle, Pr, Khazin, Bi, Khomotov, N, Kiselev, O, Korenchenko, A, Kravchuk, N, Lim, G, Maki, A, Mihara, S, Molzon, W, Mori, T, Mzavia, D, Nardo, R, Natori, H, Nicolo', Donato, Nishiguchi, H, Nishimura, Y, Ootani, W, Panareo, M, Papa, A, Piredda, G, Popov, A, Renga, F, Ripiccini, E, Ritt, S, Rossella, M, Sawada, R, Sergiampietri, F, Signorelli, G, Suzuki, S, Tenchini, Francesco, Topchyan, C, Uchiyama, Y, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, Yudin, Yv, and Zanello, D.

Published
2013

44. IRIDE : Interdisciplinary research infrastructure based on dual electron linacs and lasers

Author

Ferrario, M., Alesini, D., Alessandroni, M., Anania, M. P., Andreas, S., Angelone, M., Arcovito, A., Arnesano, F., Artioli, M., Avaldi, L., Babusci, D., Bacci, A., Balerna, A., Bartalucci, S., Bedogni, R., Bellaveglia, M., Bencivenga, F., Benfatto, M., Biedron, S., Bocci, V., Bolognesi, M., Bolognesi, P., Boni, R., Bonifacio, R., Boscherini, F., Boscolo, M., Bossi, F., Broggi, F., Buonomo, B., Calo, V., Catone, D., Capogni, M., Capone, M., Cassou, K., Castellano, M., Castoldi, A., Catani, L., Cavoto, G., Cherubini, N., Chirico, G., Cestelli-Guidi, M., Chiadroni, E., Chiarella, V., Cianchi, A., Cianci, M., Cimino, R., Ciocci, F., Clozza, A., Collini, M., Colo, G., Compagno, A., Contini, G., Coreno, M., Cucini, R., Curceanu, C., Curciarello, F., Dabagov, S., Dainese, E., Davoli, I., Dattoli, G., De Caro, L., De Felice, P., De Leo, V., Agnello, S. Dell, Della Longa, S., Delle Monache, G., De Spirito, M., Di Cicco, A., Di Donato, C., Di Gioacchino, D., Di Giovenale, D., Di Palma, E., Di Pirro, G., Dodaro, A., Doria, A., Dosselli, U., Drago, A., Dupraz, K., Escribano, R., Esposito, A., Faccini, R., Ferrari, A., Filabozzi, A., Filippetto, D., Fiori, F., Frasciello, O., Fulgentini, L., Gallerano, G. P., Gallo, A., Gambaccini, M., Gatti, C., Gatti, G., Gauzzi, P., Ghigo, A., Ghiringhelli, G., Giannessi, L., Giardina, G., Giannini, C., Giorgianni, F., Giovenale, E., Giulietti, D., Gizzi, L., Guaraldo, C., Guazzoni, C., Gunnella, R., Hatada, K., Iannone, M., Ivashyn, S., Jegerlehner, F., Keeffe, P. O., Kluge, W., Kupsc, Andrzej, Labate, L., Sandri, P. Levi, Lombardi, V., Londrillo, P., Loreti, S., Lorusso, A., Losacco, M., Lukin, A., Lupi, S., Macchi, A., Magazu, S., Mandaglio, G., Marcelli, A., Margutti, G., Mariani, C., Mariani, P., Marzo, G., Masciovecchio, C., Masjuan, P., Mattioli, M., Mazzitelli, G., Merenkov, N. P., Michelato, P., Migliardo, F., Migliorati, M., Milardi, C., Milotti, E., Milton, S., Minicozzi, V., Mobilio, S., Morante, S., Moricciani, D., Mostacci, A., Muccifora, V., Murtas, F., Musumeci, P., Nguyen, F., Orecchini, A., Organtini, G., Ottaviani, P. L., Pace, C., Pace, E., Paci, M., Pagani, C., Pagnutti, S., Palmieri, V., Palumbo, L., Panaccione, G. C., Papadopoulos, C. F., Papi, M., Passera, M., Pasquini, L., Pedio, M., Perrone, A., Petralia, A., Petrarca, M., Petrillo, C., Petrillo, V., Pierini, P., Pietropaolo, A., Pillon, M., Polosa, A. D., Pompili, R., Portoles, J., Prosperi, T., Quaresima, C., Quintieri, L., Rau, J. V., Reconditi, M., Ricci, A., Ricci, R., Ricciardi, G., Ricco, G., Ripani, M., Ripiccini, E., Romeo, S., Ronsivalle, C., Rosato, N., Rosenzweig, J. B., Rossi, A. A., Rossi, A. R., Rossi, F., Rossi, G., Russo, D., Sabatucci, A., Sabia, E., Sacchetti, F., Salducco, S., Sannibale, F., Sarri, G., Scopigno, T., Sekutowicz, J., Serafini, L., Sertore, D., Shekhovtsova, O., Spassovsky, I., Spadaro, T., Spataro, B., Spinozzi, F., Stecchi, A., Stellato, F., Surrenti, V., Tenore, A., Torre, A., Trentadue, L., Turchini, S., Vaccarezza, C., Vacchi, A., Valente, P., Venanzoni, G., Vescovi, S., Villa, F., Zanotti, G., Zema, N., Zobov, M., Zomer, F., Ferrario, M., Alesini, D., Alessandroni, M., Anania, M. P., Andreas, S., Angelone, M., Arcovito, A., Arnesano, F., Artioli, M., Avaldi, L., Babusci, D., Bacci, A., Balerna, A., Bartalucci, S., Bedogni, R., Bellaveglia, M., Bencivenga, F., Benfatto, M., Biedron, S., Bocci, V., Bolognesi, M., Bolognesi, P., Boni, R., Bonifacio, R., Boscherini, F., Boscolo, M., Bossi, F., Broggi, F., Buonomo, B., Calo, V., Catone, D., Capogni, M., Capone, M., Cassou, K., Castellano, M., Castoldi, A., Catani, L., Cavoto, G., Cherubini, N., Chirico, G., Cestelli-Guidi, M., Chiadroni, E., Chiarella, V., Cianchi, A., Cianci, M., Cimino, R., Ciocci, F., Clozza, A., Collini, M., Colo, G., Compagno, A., Contini, G., Coreno, M., Cucini, R., Curceanu, C., Curciarello, F., Dabagov, S., Dainese, E., Davoli, I., Dattoli, G., De Caro, L., De Felice, P., De Leo, V., Agnello, S. Dell, Della Longa, S., Delle Monache, G., De Spirito, M., Di Cicco, A., Di Donato, C., Di Gioacchino, D., Di Giovenale, D., Di Palma, E., Di Pirro, G., Dodaro, A., Doria, A., Dosselli, U., Drago, A., Dupraz, K., Escribano, R., Esposito, A., Faccini, R., Ferrari, A., Filabozzi, A., Filippetto, D., Fiori, F., Frasciello, O., Fulgentini, L., Gallerano, G. P., Gallo, A., Gambaccini, M., Gatti, C., Gatti, G., Gauzzi, P., Ghigo, A., Ghiringhelli, G., Giannessi, L., Giardina, G., Giannini, C., Giorgianni, F., Giovenale, E., Giulietti, D., Gizzi, L., Guaraldo, C., Guazzoni, C., Gunnella, R., Hatada, K., Iannone, M., Ivashyn, S., Jegerlehner, F., Keeffe, P. O., Kluge, W., Kupsc, Andrzej, Labate, L., Sandri, P. Levi, Lombardi, V., Londrillo, P., Loreti, S., Lorusso, A., Losacco, M., Lukin, A., Lupi, S., Macchi, A., Magazu, S., Mandaglio, G., Marcelli, A., Margutti, G., Mariani, C., Mariani, P., Marzo, G., Masciovecchio, C., Masjuan, P., Mattioli, M., Mazzitelli, G., Merenkov, N. P., Michelato, P., Migliardo, F., Migliorati, M., Milardi, C., Milotti, E., Milton, S., Minicozzi, V., Mobilio, S., Morante, S., Moricciani, D., Mostacci, A., Muccifora, V., Murtas, F., Musumeci, P., Nguyen, F., Orecchini, A., Organtini, G., Ottaviani, P. L., Pace, C., Pace, E., Paci, M., Pagani, C., Pagnutti, S., Palmieri, V., Palumbo, L., Panaccione, G. C., Papadopoulos, C. F., Papi, M., Passera, M., Pasquini, L., Pedio, M., Perrone, A., Petralia, A., Petrarca, M., Petrillo, C., Petrillo, V., Pierini, P., Pietropaolo, A., Pillon, M., Polosa, A. D., Pompili, R., Portoles, J., Prosperi, T., Quaresima, C., Quintieri, L., Rau, J. V., Reconditi, M., Ricci, A., Ricci, R., Ricciardi, G., Ricco, G., Ripani, M., Ripiccini, E., Romeo, S., Ronsivalle, C., Rosato, N., Rosenzweig, J. B., Rossi, A. A., Rossi, A. R., Rossi, F., Rossi, G., Russo, D., Sabatucci, A., Sabia, E., Sacchetti, F., Salducco, S., Sannibale, F., Sarri, G., Scopigno, T., Sekutowicz, J., Serafini, L., Sertore, D., Shekhovtsova, O., Spassovsky, I., Spadaro, T., Spataro, B., Spinozzi, F., Stecchi, A., Stellato, F., Surrenti, V., Tenore, A., Torre, A., Trentadue, L., Turchini, S., Vaccarezza, C., Vacchi, A., Valente, P., Venanzoni, G., Vescovi, S., Villa, F., Zanotti, G., Zema, N., Zobov, M., and Zomer, F.

Abstract

This paper describes the scientific aims and potentials as well as the preliminary technical design of RUDE, an innovative tool for multi-disciplinary investigations in a wide field of scientific, technological and industrial applications. IRIDE will be a high intensity "particles factory", based on a combination of high duty cycle radio-frequency superconducting electron linacs and of high energy lasers. Conceived to provide unique research possibilities for particle physics, for condensed matter physics, chemistry and material science, for structural biology and industrial applications, IRIDE will open completely new research possibilities and advance our knowledge in many branches of science and technology. [RIDE is also supposed to be realized in subsequent stages of development depending on the assigned priorities.

Published
2014
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47. IRIDE: Interdisciplinary research infrastructure based on dual electron linacs and lasers

Author

Ferrario, M., primary, Alesini, D., additional, Alessandroni, M., additional, Anania, M.P., additional, Andreas, S., additional, Angelone, M., additional, Arcovito, A., additional, Arnesano, F., additional, Artioli, M., additional, Avaldi, L., additional, Babusci, D., additional, Bacci, A., additional, Balerna, A., additional, Bartalucci, S., additional, Bedogni, R., additional, Bellaveglia, M., additional, Bencivenga, F., additional, Benfatto, M., additional, Biedron, S., additional, Bocci, V., additional, Bolognesi, M., additional, Bolognesi, P., additional, Boni, R., additional, Bonifacio, R., additional, Boscherini, F., additional, Boscolo, M., additional, Bossi, F., additional, Broggi, F., additional, Buonomo, B., additional, Calo, V., additional, Catone, D., additional, Capogni, M., additional, Capone, M., additional, Cassou, K., additional, Castellano, M., additional, Castoldi, A., additional, Catani, L., additional, Cavoto, G., additional, Cherubini, N., additional, Chirico, G., additional, Cestelli-Guidi, M., additional, Chiadroni, E., additional, Chiarella, V., additional, Cianchi, A., additional, Cianci, M., additional, Cimino, R., additional, Ciocci, F., additional, Clozza, A., additional, Collini, M., additional, Colo, G., additional, Compagno, A., additional, Contini, G., additional, Coreno, M., additional, Cucini, R., additional, Curceanu, C., additional, Curciarello, F., additional, Dabagov, S., additional, Dainese, E., additional, Davoli, I., additional, Dattoli, G., additional, De Caro, L., additional, De Felice, P., additional, De Leo, V., additional, Dell Agnello, S., additional, Della Longa, S., additional, Delle Monache, G., additional, De Spirito, M., additional, Di Cicco, A., additional, Di Donato, C., additional, Di Gioacchino, D., additional, Di Giovenale, D., additional, Di Palma, E., additional, Di Pirro, G., additional, Dodaro, A., additional, Doria, A., additional, Dosselli, U., additional, Drago, A., additional, Dupraz, K., additional, Escribano, R., additional, Esposito, A., additional, Faccini, R., additional, Ferrari, A., additional, Filabozzi, A., additional, Filippetto, D., additional, Fiori, F., additional, Frasciello, O., additional, Fulgentini, L., additional, Gallerano, G.P., additional, Gallo, A., additional, Gambaccini, M., additional, Gatti, C., additional, Gatti, G., additional, Gauzzi, P., additional, Ghigo, A., additional, Ghiringhelli, G., additional, Giannessi, L., additional, Giardina, G., additional, Giannini, C., additional, Giorgianni, F., additional, Giovenale, E., additional, Giulietti, D., additional, Gizzi, L., additional, Guaraldo, C., additional, Guazzoni, C., additional, Gunnella, R., additional, Hatada, K., additional, Iannone, M., additional, Ivashyn, S., additional, Jegerlehner, F., additional, Keeffe, P.O., additional, Kluge, W., additional, Kupsc, A., additional, Labate, L., additional, Levi Sandri, P., additional, Lombardi, V., additional, Londrillo, P., additional, Loreti, S., additional, Lorusso, A., additional, Losacco, M., additional, Lukin, A., additional, Lupi, S., additional, Macchi, A., additional, Magazù, S., additional, Mandaglio, G., additional, Marcelli, A., additional, Margutti, G., additional, Mariani, C., additional, Mariani, P., additional, Marzo, G., additional, Masciovecchio, C., additional, Masjuan, P., additional, Mattioli, M., additional, Mazzitelli, G., additional, Merenkov, N.P., additional, Michelato, P., additional, Migliardo, F., additional, Migliorati, M., additional, Milardi, C., additional, Milotti, E., additional, Milton, S., additional, Minicozzi, V., additional, Mobilio, S., additional, Morante, S., additional, Moricciani, D., additional, Mostacci, A., additional, Muccifora, V., additional, Murtas, F., additional, Musumeci, P., additional, Nguyen, F., additional, Orecchini, A., additional, Organtini, G., additional, Ottaviani, P.L., additional, Pace, C., additional, Pace, E., additional, Paci, M., additional, Pagani, C., additional, Pagnutti, S., additional, Palmieri, V., additional, Palumbo, L., additional, Panaccione, G.C., additional, Papadopoulos, C.F., additional, Papi, M., additional, Passera, M., additional, Pasquini, L., additional, Pedio, M., additional, Perrone, A., additional, Petralia, A., additional, Petrarca, M., additional, Petrillo, C., additional, Petrillo, V., additional, Pierini, P., additional, Pietropaolo, A., additional, Pillon, M., additional, Polosa, A.D., additional, Pompili, R., additional, Portoles, J., additional, Prosperi, T., additional, Quaresima, C., additional, Quintieri, L., additional, Rau, J.V., additional, Reconditi, M., additional, Ricci, A., additional, Ricci, R., additional, Ricciardi, G., additional, Ricco, G., additional, Ripani, M., additional, Ripiccini, E., additional, Romeo, S., additional, Ronsivalle, C., additional, Rosato, N., additional, Rosenzweig, J.B., additional, Rossi, A.A., additional, Rossi, A.R., additional, Rossi, F., additional, Rossi, G., additional, Russo, D., additional, Sabatucci, A., additional, Sabia, E., additional, Sacchetti, F., additional, Salducco, S., additional, Sannibale, F., additional, Sarri, G., additional, Scopigno, T., additional, Sekutowicz, J., additional, Serafini, L., additional, Sertore, D., additional, Shekhovtsova, O., additional, Spassovsky, I., additional, Spadaro, T., additional, Spataro, B., additional, Spinozzi, F., additional, Stecchi, A., additional, Stellato, F., additional, Surrenti, V., additional, Tenore, A., additional, Torre, A., additional, Trentadue, L., additional, Turchini, S., additional, Vaccarezza, C., additional, Vacchi, A., additional, Valente, P., additional, Venanzoni, G., additional, Vescovi, S., additional, Villa, F., additional, Zanotti, G., additional, Zema, N., additional, Zobov, M., additional, and Zomer, F., additional

Published
2014
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49. The MEG detector for μ +→e+ γ decay search

Author

Adam, J., primary, Bai, X., additional, Baldini, A. M., additional, Baracchini, E., additional, Bemporad, C., additional, Boca, G., additional, Cattaneo, P. W., additional, Cavoto, G., additional, Cei, F., additional, Cerri, C., additional, Corbo, M., additional, Curalli, N., additional, De Bari, A., additional, De Gerone, M., additional, Del Frate, L., additional, Doke, S., additional, Dussoni, S., additional, Egger, J., additional, Fratini, K., additional, Fujii, Y., additional, Galli, L., additional, Galeotti, S., additional, Gallucci, G., additional, Gatti, F., additional, Golden, B., additional, Grassi, M., additional, Graziosi, A., additional, Grigoriev, D. N., additional, Haruyama, T., additional, Hildebrandt, M., additional, Hisamatsu, Y., additional, Ignatov, F., additional, Iwamoto, T., additional, Kaneko, D., additional, Kasami, K., additional, Kettle, P.-R., additional, Khazin, B. I., additional, Kiselev, O., additional, Korenchenko, A., additional, Kravchuk, N., additional, Lim, G., additional, Maki, A., additional, Mihara, S., additional, Molzon, W., additional, Mori, T., additional, Morsani, F., additional, Mzavia, D., additional, Nardò, R., additional, Natori, H., additional, Nicolò, D., additional, Nishiguchi, H., additional, Nishimura, Y., additional, Ootani, W., additional, Ozone, K., additional, Panareo, M., additional, Papa, A., additional, Pazzi, R., additional, Piredda, G., additional, Popov, A., additional, Raffaelli, F., additional, Renga, F., additional, Ripiccini, E., additional, Ritt, S., additional, Rossella, M., additional, Sawada, R., additional, Schneebeli, M., additional, Sergiampietri, F., additional, Signorelli, G., additional, Suzuki, S., additional, Tenchini, F., additional, Topchyan, C., additional, Uchiyama, Y., additional, Valle, R., additional, Voena, C., additional, Xiao, F., additional, Yamada, S., additional, Yamamoto, S., additional, Yamashita, S., additional, Yudin, Yu. V., additional, and Zanello, D., additional

Published
2013
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50. MEG Upgrade Proposal

Author

Baldini, A. M., Cei, F., Cerri, C., Dussoni, S., Galli, L., Grassi, M., Nicolo, D., Raffaelli, F., Sergiampietri, F., Signorelli, G., Tenchini, F., Bagliani, D., Gerone, M., Gatti, F., Baracchini, E., Fujii, Y., Iwamoto, T., Kaneko, D., Mori, T., Nishimura, M., Ootani, W., Sawada, R., Uchiyama, Y., Boca, G., Paolo Walter Cattaneo, Bari, A., Nardo, R., Rossella, M., Cascella, M., Grancagnolo, F., L Erario, A., Maffezzoli, A., Miccoli, A., Onorato, G., Palama, G., Panareo, M., Pepino, A., Rella, S., Tassielli, G. F., Zavarise, G., Cavoto, G., Graziosi, A., Piredda, G., Ripiccini, E., Voena, C., Grigoriev, D. N., Ignatov, F., Khazin, B. I., Popov, A., Yudin, Yu V., Haruyama, T., Mihara, S., Nishiguchi, H., Yamamoto, A., Hildebrandt, M., Kettle, P. -R, Papa, A., Renga, F., Ritt, S., Stoykov, A., Kang, T. I., Lim, G., Molzon, W., You, Z., Khomutov, N., Korenchenko, A., Kravchuk, N., and Kuchinksy, N.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, High Energy Physics - Phenomenology (hep-ph), Physics::Instrumentation and Detectors, FOS: Physical sciences, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment
Abstract

We propose the continuation of the MEG experiment to search for the charged lepton flavour violating decay (cLFV) \mu \to e \gamma, based on an upgrade of the experiment, which aims for a sensitivity enhancement of one order of magnitude compared to the final MEG result, down to the $6 \times 10^{-14}$ level. The key features of this new MEG upgrade are an increased rate capability of all detectors to enable running at the intensity frontier and improved energy, angular and timing resolutions, for both the positron and photon arms of the detector. On the positron-side a new low-mass, single volume, high granularity tracker is envisaged, in combination with a new highly segmented, fast timing counter array, to track positron from a thinner stopping target. The photon-arm, with the largest liquid xenon (LXe) detector in the world, totalling 900 l, will also be improved by increasing the granularity at the incident face, by replacing the current photomultiplier tubes (PMTs) with a larger number of smaller photosensors and optimizing the photosensor layout also on the lateral faces. A new DAQ scheme involving the implementation of a new combined readout board capable of integrating the diverse functions of digitization, trigger capability and splitter functionality into one condensed unit, is also under development. We describe here the status of the MEG experiment, the scientific merits of the upgrade and the experimental methods we plan to use., Comment: A. M. Baldini and T. Mori Spokespersons. Research proposal submitted to the Paul Scherrer Institute Research Committee for Particle Physics at the Ring Cyclotron. 131 Pages

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