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1. The FAZIA project in Europe: R&D phase

Author

Zbigniew Sosin, E. Vient, F. Gramegna, Paola Marini, F. Salomon, Mariano Vigilante, G. Ademard, Luca Morelli, Gabriele Pasquali, G. Pastore, A. Ordine, Giovanni Casini, L. Roscilli, M. Falorsi, M. F. Rivet, P. Edelbruck, Ismael Martel, R. Giordano, C. Pain, R. Bougault, H. Petrascu, A. Chbihi, G. Brulin, L. Lavergne, Alessandro Olmi, O. Lopez, M. Pârlog, R. Rocco, A.J. Kordyasz, N. Le Neindre, A. Wieloch, C. Spitaels, G. Spadaccini, L. Bardelli, B. Bougard, S. Energico, E. Vanzanella, J.D. Frankland, Krzysztof Korcyl, R. Alba, A. Meoli, E. Piasecki, E. Bonnet, R. Borcea, M. Boisjoli, J.A. Dueñas, L. Ciolacu, M. Kajetanowicz, J. Łukasik, M. Cruceru, A. Boiano, S. Serra, T. Twaróg, Marek Palka, Piotr Pawłowski, K. Ga̧sior, G. Tobia, F. Negoita, B. De Fazio, E. Scarlini, P. Kulig, Andrea Stefanini, I. Cruceru, C. Huss, E. Wanlin, M. Petcu, B. Borderie, A. Grzeszczuk, Y. Merrer, S. Carboni, Simone Valdré, P. Di Meo, Giacomo Poggi, V. Seredov, A. Vanzanella, W. Zipper, G. Tortone, C. Maiolino, D. Sierpowski, G. Pontoriere, P. Desrues, M. Degerlier, Domenico Santonocito, B. D’Aquino, M. Guerzoni, F. Cassese, E. Galichet, G. Passeggio, Giuseppe Vitiello, A. Anastasio, E. Legouée, M. Cinausero, Sandro Barlini, V. Masone, Maurizio Bini, H. Hamrita, Silvia Piantelli, E. Rauly, G. Paduano, D. Gruyer, E. Rosato, M. Bruno, Tomasz Kozik, S. Barbey, C. Cassese, Tommaso Marchi, R. Bougault, G. Poggi, S. Barlini, B. Borderie, G. Casini, A. Chbihi, N. Le Neindre, M. Pârlog, G. Pasquali, S. Piantelli, Z. Sosin, G. Ademard, R. Alba, A. Anastasio, S. Barbey, L. Bardelli, M. Bini, A. Boiano, M. Boisjoli, E. Bonnet, R. Borcea, B. Bougard, G. Brulin, M. Bruno, S. Carboni, C. Cassese, F. Cassese, M. Cinausero, L. Ciolacu, I. Cruceru, M. Cruceru, B. D’Aquino, B. Fazio, M. Degerlier, P. Desrue, P. Meo, J. A. Dueña, P. Edelbruck, S. Energico, M. Falorsi, J. D. Frankland, E. Galichet, K. Gasior, F. Gramegna, R. Giordano, D. Gruyer, A. Grzeszczuk, M. Guerzoni, H. Hamrita, C. Hu, M. Kajetanowicz, K. Korcyl, A. Kordyasz, T. Kozik, P. Kulig, L. Lavergne, E. Legouée, O. Lopez, J. Łukasik, C. Maiolino, T. Marchi, P. Marini, I. Martel, V. Masone, A. Meoli, Y. Merrer, L. Morelli, F. Negoita, A. Olmi, A. Ordine, G. Paduano, C. Pain, M. Pałka, G. Passeggio, G. Pastore, P. Pawłowski, M. Petcu, H. Petrascu, E. Piasecki, G. Pontoriere, E. Rauly, M. F. Rivet, R. Rocco, E. Rosato, L. Roscilli, E. Scarlini, F. Salomon, D. Santonocito, V. Seredov, S. Serra, D. Sierpowski, G. Spadaccini, C. Spitael, A. A. Stefanini, G. Tobia, G. Tortone, T. Twaróg, S. Valdré, A. Vanzanella, E. Vanzanella, E. Vient, M. Vigilante, G. Vitiello, E. Wanlin, A. Wieloch, W. Zipper, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Conservatoire National des Arts et Métiers [CNAM] (CNAM), FAZIA, R., Bougault, G., Poggi, S., Barlini, B., Borderie, G., Casini, A., Chbihi, N., Le Neindre, M., Pârlog, G., Pasquali, S., Piantelli, Z., Sosin, G., Ademard, R., Alba, A., Anastasio, S., Barbey, L., Bardelli, M., Bini, A., Boiano, M., Boisjoli, E., Bonnet, R., Borcea, B., Bougard, G., Brulin, M., Bruno, S., Carboni, C., Cassese, F., Cassese, M., Cinausero, L., Ciolacu, I., Cruceru, M., Cruceru, B., D’Aquino, DE FAZIO, Benedetto, M., Degerlier, P., Desrue, P., Di Meo, J. A., Dueña, P., Edelbruck, S., Energico, M., Falorsi, J. D., Frankland, E., Galichet, K., Gasior, F., Gramegna, Giordano, Raffaele, D., Gruyer, A., Grzeszczuk, M., Guerzoni, H., Hamrita, C., Hu, M., Kajetanowicz, K., Korcyl, A., Kordyasz, T., Kozik, P., Kulig, L., Lavergne, E., Legouée, O., Lopez, J., Lukasik, C., Maiolino, T., Marchi, P., Marini, I., Martel, V., Masone, A., Meoli, Y., Merrer, L., Morelli, F., Negoita, A., Olmi, A., Ordine, G., Paduano, C., Pain, M., Palka, G., Passeggio, P., Pawlowski, M., Petcu, H., Petrascu, E., Piasecki, G., Pontoriere, E., Rauly, M. F., Rivet, R., Rocco, Rosato, Elio, L., Roscilli, E., Scarlini, F., Salomon, D., Santonocito, V., Seredov, S., Serra, D., Sierpowski, Spadaccini, Giulio, C., Spitael, A. A., Stefanini, G., Tobia, G., Tortone, T., Twaróg, S., Valdré, A., Vanzanella, E., Vanzanella, E., Vient, Vigilante, Mariano, G., Vitiello, E., Wanlin, A., Wieloch, W., Zipper, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)

Subjects
Physics, NUCLEAR REACTIONS, Nuclear and High Energy Physics, Silicon, SCINTILLATION DETECTORS, Physics::Instrumentation and Detectors, Nuclear engineering, Detector, SILICON DETECTORS, chemistry.chemical_element, Reaction products, Nanotechnology, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Particle detector, Particle identification, Semiconductor detector, chemistry, Scintillation counter, Hermetic detector, PARTICLE IDENTIFICATION
Abstract

The goal of the FAZIA Collaboration is the design of a new-generation 4π detector array for heavy-ion collisions with radioactive beams. This article summarizes the main results of the R&D phase, devoted to the search for significant improvements of the techniques for charge and mass identification of reaction products. This was obtained by means of a systematic study of the basic detection module, consisting of two transmission-mounted silicon detectors followed by a CsI(Tl) scintillator. Significant improvements in ΔE-E and pulse-shape techniques were obtained by controlling the doping homogeneity and the cutting angles of silicon and by putting severe constraints on thickness uniformity. Purposely designed digital electronics contributed to identification quality. The issue of possible degradation related to radiation damage of silicon was also addressed. The experimental activity was accompanied by studies on the physics governing signal evolution in silicon. The good identification quality obtained with the prototypes during the R&D phase, allowed us to investigate also some aspects of isospin physics, namely isospin transport and odd-even staggering. Now, after the conclusion of the R&D period, the FAZIA Collaboration has entered the demonstrator phase, with the aim of verifying the applicability of the devised solutions for the realization of a larger-scale experimental set-up.

Published
2014
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2. Comparison of charged particle identification using pulse shape discrimination and ΔE−E methods between front and rear side injection in silicon detectors

Author

A. Grzeszczuk, O. Lopez, P. Edelbruck, S. Carboni, R. Alba, V. L. Kravchuk, Sandro Barlini, M. Bruno, Gabriele Pasquali, Tommaso Marchi, Andrea Stefanini, T. Twaróg, Alessandro Olmi, F. Gramegna, Ivano Lombardo, I. Cruceru, M. Pârlog, Elio Rosato, Silvia Piantelli, L. Bardelli, Mariano Vigilante, G. Spadaccini, M. Petcu, R. Bougault, Tomasz Kozik, M. Degerlier, E. Vient, E. Bonnet, M. F. Rivet, B. Borderie, H. Petrascu, A. Chbihi, K. Ga¸sior, N. Le Neindre, Maurizio Bini, J.D. Frankland, Luca Morelli, J.A. Dueñas, Domenico Santonocito, R. Borcea, G. Baiocco, D. Gruyer, Giovanni Casini, F. Negoita, M. Cinausero, F. Salomon, E. Legouée, M. Kamuda, Giacomo Poggi, C. Maiolino, and Paola Marini

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Silicon, 010308 nuclear & particles physics, business.industry, Detector, chemistry.chemical_element, 01 natural sciences, Charged particle, Ion, Pulse (physics), Optics, chemistry, Electric field, Rise time, 0103 physical sciences, 010306 general physics, business, Instrumentation
Abstract

The response of silicon-silicon-CsI(Tl) telescopes, developed within the FAZIA collaboration, to fragments produced in nuclear reactions 84 Krþ 120-124 Sn at 35 A MeV, has been used to study ion identification methods. Two techniques are considered for the identification of the nuclear products in the silicon stages. The standard DEE one requires signals induced in two detection layers by ions punching through the first one. Conversely, the digital Pulse Shape Analysis (PSA) allows the identification of ions stopped in the first silicon layer. The capabilities of these two identification methods have been compared for different mountings of the silicons, i.e. rear (particles entering through the low electric field side) or front (particles entering through the high electric field side) side injection. The DEE identification method gives exactly the same results in both configurations. At variance, the pulse shape discrimination is very sensitive to the detector mounting. In case of rear side injection, the identification with the ''energy vs. charge rise time'' PSA method presents energy thresholds which are significantly lower than in the case of front side injection. & 2012 Elsevier B.V. All rights reserved.

Published
2013
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3. Low-temperature technique of thin silicon ion implanted epitaxial detectors

Author

Giovanni Casini, Simone Valdré, Gabriele Pasquali, M. Teodorczyk, A. Chbihi, N. Le Neindre, Zbigniew Sosin, Mariano Vigilante, J.D. Frankland, P. Kulig, E. Bonnet, M. Guerzoni, Maurizio Bini, E. Scarlini, E. Vanzanella, Dariusz Lipiński, Bernard Borderie, A. Grzeszczuk, Z. Khabanowa, P. Edelbruck, M. Cinausero, M. Parlog, G. Spadaccini, Ł. Kordyasz, Andrea Stefanini, Alessandro Olmi, R. Bougault, K. Ga̧sior, M. Gajewski, J. Sarnecki, A.J. Kordyasz, A. Boiano, R. Alba, M.F. Rivet, D. Gruyer, M. Bruno, T. Twaróg, A. Zagojski, A. Brzozowski, G. Pastore, A. Meoli, Luca Morelli, T. Marchi, M. Kowalczyk, A. Bednarek, D. Santonocito, C. Maiolino, A. Ordine, K. Krzyżak, S. Serra, Y. Merrer, K. J. Tarasiuk, E. Vient, F. Salomon, Giacomo Poggi, H. Wodzińska, F. Gramegna, G. Tortone, W. Zipper, O. Lopez, Silvia Piantelli, Elio Rosato, Tomasz Kozik, G. Ademard, Sandro Barlini, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Fazia Collaboration, A. J., Kordyasz, N., Le Neindre, M., Parlog, G., Casini, R., Bougault, G., Poggi, A., Bednarek, M., Kowalczyk, O., Lopez, Y., Merrer, E., Vient, J. D., Frankland, E., Bonnet, A., Chbihi, D., Gruyer, B., Borderie, G., Ademard, P., Edelbruck, M. F., Rivet, F., Salomon, M., Bini, S., Valdré, E., Scarlini, G., Pasquali, G., Pastore, S., Piantelli, A., Stefanini, A., Olmi, S., Barlini, A., Boiano, Rosato, Elio, A., Meoli, A., Ordine, Spadaccini, Giulio, G., Tortone, Vigilante, Mariano, E., Vanzanella, M., Bruno, S., Serra, L., Morelli, M., Guerzoni, R., Alba, D., Santonocito, C., Maiolino, M., Cinausero, F., Gramegna, T., Marchi, T., Kozik, P., Kulig, T., Twaróg, Z., Sosin, K., Ga??sior, A., Grzeszczuk, W., Zipper, J., Sarnecki, D., Lipi??ski, H., Wodzi??ska, A., Brzozowski, M., Teodorczyk, M., Gajewski, A., Zagojski, K., Krzy??ak, K. J., Tarasiuk, Z., Khabanowa, Kordyasz, ?. ?., Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Silicon, 010308 nuclear & particles physics, Detector, Analytical chemistry, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Epitaxy, 01 natural sciences, Particle detector, Charged particle, Ion, Semiconductor detector, Ion implantation, chemistry, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Atomic physics, 010306 general physics
Abstract

A new technique of large-area thin ion implanted silicon detectors has been developed within the R&D performed by the FAZIA Collaboration. The essence of the technique is the application of a low-temperature baking process instead of high-temperature annealing. This thermal treatment is performed after B+ ion implantation and Al evaporation of detector contacts, made by using a single adjusted Al mask. Extremely thin silicon pads can be therefore obtained. The thickness distribution along the X and Y directions was measured for a prototype chip by the energy loss of α-particles from 241Am (〈E α 〉 = 5.5 MeV). Preliminary tests on the first thin detector (area ≈ 20 × 20 mm2) were performed at the INFN-LNS cyclotron in Catania (Italy) using products emitted in the heavy-ion reaction 84Kr (E = 35 A MeV) + 112Sn. The ΔE − E ion identification plot was obtained using a telescope consisting of our thin ΔE detector (21 μm thick) followed by a typical FAZIA 510 μm E detector of the same active area. The charge distribution of measured ions is presented together with a quantitative evaluation of the quality of the Z resolution. The threshold is lower than 2 A MeV depending on the ion charge.

Published
2015
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4. Isospin transport in 84Kr+112,124Sn reactions at Fermi energies

Author

M. Cinausero, M.F. Rivet, N. Le Neindre, R. Bougault, T. Marchi, R. Alba, Sandro Barlini, Gabriele Pasquali, T. Twaróg, D. Gruyer, G. Spadaccini, O. Lopez, Elio Rosato, B. Borderie, Giovanni Casini, E. Bonnet, J.D. Frankland, Tomasz Kozik, Maurizio Bini, Silvia Piantelli, Alessandro Olmi, Luca Morelli, M. Parlog, A. Chbihi, Giacomo Poggi, E. Vient, C. Maiolino, Andrea Stefanini, F. Gramegna, M. Bruno, S. Carboni, P. R. Maurenzig, M. Degerlier, Mariano Vigilante, Domenico Santonocito, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), FAZIA, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), S. Lunardi, P.G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, J.J. Valiente-Dobon, S., Piantelli, G., Casini, A., Olmi, S., Barlini, M., Bini, S., Carboni, P. R., Maurenzig, G., Pasquali, G., Poggi, A. A., Stefanini, R., Bougault, N., Le Neindre, O., Lopez, M., Pârlog, E., Vient, E., Bonnet, A., Chbihi, J. D., Frankland, D., Gruyer, Rosato, Elio, Spadaccini, Giulio, Vigilante, Mariano, B., Borderie, M. F., Rivet, M., Bruno, L., Morelli, M., Cinausero, M., Degerlier, F., Gramegna, T., Marchi, R., Alba, C., Maiolino, D. Santonocito T., Kozik, and T., Twaróg

Subjects
Nuclear reaction, Physics, Density gradient, QC1-999, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nuclear reaction, Ion, isotopic identification, Diffusion process, Isospin, Nuclear reactions, Nuclear Experiment (nucl-ex), Atomic physics, Nuclear Experiment, Transport phenomena, Beam (structure), Nuclear Physics, Fermi Gamma-ray Space Telescope
Abstract

Isospin transport phenomena in dissipative heavy ion collisions have been investigated at Fermi energies with a beam of 84Kr at 35AMeV. A comparison of the /Z of light and medium products forward-emitted in the centre of mass frame when the beam impinges on a n-poor 112Sn and a n-rich 124Sn targets is presented. Data were collected by means of a three-layer telescope with very good performances in terms of mass identification (full isotopic resolution up to Z about 20 for ions punching through the first detector layer) built by the FAZIA Collaboration and located just beyond the grazing angle for both reactions. The /Z of the decay products emitted when the n-rich target is used is always higher than that associated to the n-poor one. Since the detector was able to measure only fragments coming from the QuasiProjectile decay and/or neck emission, the observed behaviour can be ascribed to the isospin diffusion, driven by the isospin gradient between QuasiProjectile and QuasiTarget. Moreover, for light fragments the /Z as a function of the lab velocity of the fragment increases when we move from the QuasiProjectile velocity to the centre of mass (neck zone). This effect can be interpreted as an evidence of isospin drift driven by the density gradient between the QuasiProjectile zone (at normal density) and the more diluted neck zone., Comment: 4 pages, 3 figures, Contribution to conference proceedings of the 25th International Nuclear Physics Conference (INPC 2013) Journal-ref: 25th International Nuclear Physics Conference (INPC 2013), Firenze : Italy (2013)

Published
2013
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5. Comparison of charged particle identification using pulse shape discrimination and methods between front and rear side injection in silicon detectors

Author

N. Le Neindre, R. Bougault, S. Barlini, E. Bonnet, B. Borderie, G. Casini, A. Chbihi, P. Edelbruck, J. D. Frankland, D. Gruyer, E. Legouée, O. Lopez, P. Marini, M. Pârlog, G. Pasquali, M. Petcu, M. F. Rivet, F. Salomon, E. Vient, R. Alba, L. Bardelli, M. Bini, R. Borcea, S. Carboni, M. Cinausero, I. Cruceru, M. Degerlier, J. A. Dueñas, K. Ga¸sior, F. Gramegna, A. Grzeszczuk, M. Kamuda, T. Kozik, V. Kravchuk, I. Lombardo, C. Maiolino, T. Marchi, F. Negoita, A. Olmi, H. Petrascu, S. Piantelli, G. Poggi, E. Rosato, D. Santonocito, G. Spadaccini, A. A. Stefanini, T. Twaróg, M. Vigilante, BAIOCCO, GIORGIO, BRUNO, MAURO, MORELLI, LUCA, N. Le Neindre, R. Bougault, S. Barlini, E. Bonnet, B. Borderie, G. Casini, A. Chbihi, P. Edelbruck, J.D. Frankland, D. Gruyer, E. Legouée, O. Lopez, P. Marini, M. Pârlog, G. Pasquali, M. Petcu, M.F. Rivet, F. Salomon, E. Vient, R. Alba, G. Baiocco, L. Bardelli, M. Bini, R. Borcea, M. Bruno, S. Carboni, M. Cinausero, I. Cruceru, M. Degerlier, J.A. Dueña, K. Ga¸sior, F. Gramegna, A. Grzeszczuk, M. Kamuda, T. Kozik, V. Kravchuk, I. Lombardo, C. Maiolino, T. Marchi, L. Morelli, F. Negoita, A. Olmi, H. Petrascu, S. Piantelli, G. Poggi, E. Rosato, D. Santonocito, G. Spadaccini, A.A. Stefanini, T. Twaróg, and M. Vigilante

Subjects
pulse shape analysis, ddc:530, particle identification
Abstract

The response of silicon–silicon–CsI(Tl) telescopes, developed within the FAZIA collaboration, to fragments produced in nuclear reactions 84Kr+120-124Sn at 35 A MeV, has been used to study ion identification methods. Two techniques are considered for the identification of the nuclear products in the silicon stages. The standard ΔE−E one requires signals induced in two detection layers by ions punching through the first one. Conversely, the digital Pulse Shape Analysis (PSA) allows the identification of ions stopped in the first silicon layer. The capabilities of these two identification methods have been compared for different mountings of the silicons, i.e. rear (particles entering through the low electric field side) or front (particles entering through the high electric field side) side injection. The ΔE−E identification method gives exactly the same results in both configurations. At variance, the pulse shape discrimination is very sensitive to the detector mounting. In case of rear side injection, the identification with the “energy vs. charge rise time” PSA method presents energy thresholds which are significantly lower than in the case of front side injection.

Published
2013
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6. Isospin transport and reaction mechanism in nuclear reactions in the range 20–40 MeV/n

Author

T. Marchi, Diego Gruyer, Sandro Barlini, Giacomo Poggi, E. Vient, M. Cinausero, Maurizio Bini, Tomasz Kozik, A. Chibhi, Eric Bonnet, M.F. Rivet, Luca Morelli, F. Gramegna, J.D. Frankland, Alessandro Olmi, Giovanni Casini, D. Fabris, Gabriele Pasquali, R. Bougault, Silvia Piantelli, M. Bruno, Andrea Stefanini, B. Borderie, Simone Valdré, G. Pastore, M. Parlog, Mariano Vigilante, Elio Rosato, N. Le Neindre, M. Degerlier, T. Twaróg, O. Lopez, Barlini, S., Piantelli, S., Casini, G., Olmi, A., Bini, M., Pasquali, G., Poggi, G., Stefanini, A. A., Bougault, R., Bonnet, E., Borderie, B., Chibhi, A., Frankland, J. D., Gruyer, D., Lopez, O., Le Neindre, N., Parlog, M., Rivet, M. F., Vient, E., Rosato, E., Vigilante, M., Bruno, M., Marchi, T., Morelli, L., Cinausero, M., Degerlier, M., Gramegna, F., Kozik, T., Twarog, T., Fabris, D., Valdré, S., Pastore, G., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclear reaction, Particle physics, Range (particle radiation), education.field_of_study, 010308 nuclear & particles physics, Population, Degrees of freedom (statistics), Charge (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Measure (mathematics), Symmetry (physics), Nuclear physics, Physics and Astronomy (all), Isospin, 0103 physical sciences, 010306 general physics, education
Abstract

International audience; In recent years, many efforts have been devoted to the investigation of the isospin degree of freedom in nuclear reactions. Comparing systems involving partners with different N/Z, it has been possible to investigate the isospin transport process and its influence on the final products population. This can be then related to the symmetry energy term of the nuclear EOS. From the experimental point of view, this task requires detectors able to measure both charge and mass of the emitted products, in the widest possible range of energy and size of the fragments. With this objective, the FAZIA and GARFIELD+RCo apparatus have been used with success in some recent experiments.

Published
2015
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7. Extracting information from partially depleted Si detectors with digital sampling electronics

Author

P. Edelbruck, G. Ademard, T. Marchi, Silvia Piantelli, J. A. Dueñas, F. Salomon, M. Cinausero, Andrea Stefanini, Tomasz Kozik, E. Bonnet, Gabriele Pasquali, G. Spadaccini, A. Ordine, D. Gruyer, Giovanni Casini, F. Gramegna, Simone Valdré, M. F. Rivet, A. Chbihi, R. Bougault, Elio Rosato, O. Lopez, T. Twaróg, Luca Morelli, B. Borderie, Sandro Barlini, Maurizio Bini, Giacomo Poggi, C. Maiolino, N. Le Neindre, J.D. Frankland, E. Vient, G. Pastore, Domenico Santonocito, A.J. Kordyasz, Alessandro Olmi, M. Pârlog, R. Alba, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, business.industry, QC1-999, Detector, Ranging, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], law.invention, Telescope, Sampling (signal processing), law, Electronic engineering, Optoelectronics, Electronics, business, Energy (signal processing), Digital signal processing, Voltage
Abstract

A study of the identification properties and of the energy response of a Si-Si-CsI(Tl) $\Delta$ E-E telescope exploiting a partially depleted second Si stage has been performed. Five different bias voltages have been applied to the second stage of the telescope, one corresponding to full depletion, the others associated with a depleted layer ranging from 60% to 90% of the detector thickness. Fragment identification has been obtained using either the $\Delta$E-E technique or the Pulse Shape Analysis (PSA). Charge collection efficiency has been evaluated. The $\Delta$ E-E performance is not affected by incomplete depletion. Isotopic separation capability improves at lower bias voltages with respect to full depletion, though charge identification thresholds increase.

Published
2015
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8. N/Z influence on the level density parameter

Author

L. Augey, N. Le Neindre, G. Ademard, Paola Marini, M. F. Rivet, B. Borderie, T. Twaróg, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), INDRA Collaboration, GANILEXP, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Coupling, Nuclear physics, Physics, Range (particle radiation), Spectrometer, Isospin, QC1-999, Charge (physics), Observable, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Analysis method
Abstract

International audience; A completely exclusive experiment was performed by the INDRA collaboration to study the isospin dependence of the level density parameter.Over a large N/Z range, the fusion-evaporation chargedproducts of 34,36,40Ar+58,60,64Ni reactions were measured and identifiedboth in charge and mass by coupling INDRA and VAMOS spectrometer.Preliminary results obtained by combining data of bothdetectors are presented for the 36Ar+58Ni at 13.3 AMeV. The analysismethod of relevant observables for such an ambitious investigationare discussed and the progress of the data analysis are reviewed.

Published
2014
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9. NandZodd-even staggering in Kr+Sn collisions at Fermi energies

Author

B. Borderie, R. Bougault, T. Marchi, M. Degerlier, M.F. Rivet, Andrea Stefanini, O. Lopez, Giovanni Casini, F. Gramegna, G. Spadaccini, A. Chbihi, Alessandro Olmi, Tomasz Kozik, M. Pârlog, J.D. Frankland, T. Twaróg, N. Le Neindre, Diego Gruyer, R. Alba, Domenico Santonocito, Giacomo Poggi, E. Vient, C. Maiolino, M. Bruno, Mariano Vigilante, P. R. Maurenzig, Luca Morelli, Simone Valdré, Gabriele Pasquali, Eric Bonnet, S. Carboni, Elio Rosato, Maurizio Bini, Sandro Barlini, M. Cinausero, and Silvia Piantelli

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Proton, 010308 nuclear & particles physics, High Energy Physics::Lattice, 01 natural sciences, Yield (chemistry), 0103 physical sciences, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Fermi Gamma-ray Space Telescope
Abstract

The odd-even staggering of the yield of final reaction products has been studied as a function of proton (Z) and neutron (N ) numbers for the collisions 84 Kr + 112 Sn and 84 Kr + 124 Sn at 35 MeV/nucleon in a wide range of elements (up to Z ≈ 20). The experimental data show that staggering effects rapidly decrease with increasing size of the fragments. Moreover the staggering in N is definitely larger than the one in Z. Similar general features are qualitatively reproduced by the GEMINI code. Concerning the comparison of the two systems, the staggering in N is in general rather similar, being slightly larger only for the lightest fragments produced in the n-rich system. In contrast the staggering in Z, although smaller than that in N , is sizably larger for the n-poor system with respect to the n-rich one.

Published
2013
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10. The european FAZIA initiative: a high-performance digital telescope array for heavy-ion studies

Author

Giovanni Casini, N. Le Neindre, Paola Marini, Gabriele Pasquali, G. Pastore, A. Ordine, D. Gruyer, J.D. Frankland, B. Borderie, E. Bonnet, Maurizio Bini, Silvia Piantelli, E. Vient, R. Bougault, F. Salomon, S. Carboni, M. F. Rivet, M. Guerzoni, Tommaso Marchi, Elio Rosato, Sandro Barlini, Luca Morelli, Mariano Vigilante, Giacomo Poggi, A. Chbihi, M. Bruno, A. Kordjasz, Andrea Stefanini, O. Lopez, Alessandro Olmi, M. Pârlog, M. Degerlier, T. Twaróg, M. Cinausero, G. Spadaccini, Simone Valdré, T. Kozik, P. Edelbruck, F. Gramegna, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), FAZIA, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), S. Lunardi, P.G. Bizzeti, C. Bucci, M. Chiari, A. Dainese, P. Di Nezza, R. Menegazzo, A. Nannini, C. Signorini, J.J. Valiente-Dobon, G., Casini, S., Barlini, G., Pasquali, G., Pastore, M., Bini, S., Carboni, A., Olmi, S., Piantelli, G., Poggi, A. A., Stefanini, S., Valdré, E., Bonnet, B., Borderie, R., Bougault, M., Bruno, A., Chbihi, M., Cinausero, M., Degerlier, P., Edelbruck, J. D., Frankland, F., Gramegna, D., Gruyer, M., Guerzoni, A., Kordyasz, T., Kozik, N., Le Neindre, O., Lopez, T., Marchi, P., Marini, L., Morelli, Ordine, Antonio, M., Parlog, M. F., Rivet, Rosato, Elio, F., Salomon, Spadaccini, Giulio, T., Twarog, E., Vient, and Vigilante, Mariano

Subjects
Charged Particle Detector, Physics - Instrumentation and Detectors, Preamplifier, Computer science, QC1-999, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, law.invention, Telescope, pulse shape discrimination, law, 0103 physical sciences, Electronics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Aerospace engineering, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, 010308 nuclear & particles physics, business.industry, Physics, Instrumentation and Detectors (physics.ins-det), Modular design, Identification (information), isotopic identification, Pulse shape analysis, Heavy ion, business, New Facilities and Instrumentation, Product identification
Abstract

The european Fazia collaboration aims at building a new modular array for charged product identification to be employed for heavy-ion studies. The elementary module of the array is a Silicon-Silicon-CsI telescope, optimized for ion identification also via pulse shape analysis. The achievement of top performances imposes specific electronics which has been developed by FAZIA and features high quality charge and current preamplifiers, coupled to fully digital front-end. During the initial R&D phase, original and novel solutions have been tested in prototypes, obtaining unprecedented ion identification capabilities. FAZIA is now constructing a demonstrator array consisting of about two hundreds telescopes arranged in a compact and transportable configuration. In this contribution, we mainly summarize some aspects studied by FAZIA to improve the ion identification. Then we will briefly discuss the FAZIA program centered on experiments to be done with the demonstrator. First results on the isospin dynamics obtained with a reduced set-up demonstrate well the performance of the telescope and represent a good starting point towards future investigations with both stable and exotic beams., 8 pages, 2 figures, Contribution to conference proceedings of the 25th International Nuclear Physics Conference (INPC 2013) Journal-ref: 25th International Nuclear Physics Conference (INPC 2013), Firenze : Italy (2013)

Published
2013
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11. Isospin transport in84Kr+112,124Sn collisions at Fermi energies

Author

A. Chbihi, Tomasz Kozik, Maurizio Bini, M.F. Rivet, R. Bougault, J.D. Frankland, Eric Bonnet, M. Pârlog, N. Le Neindre, Gabriele Pasquali, F. Gramegna, Elio Rosato, Giacomo Poggi, E. Vient, B. Borderie, Andrea Stefanini, Sandro Barlini, Domenico Santonocito, C. Maiolino, T. Marchi, M. Bruno, S. Carboni, M. Degerlier, G. Spadaccini, R. Alba, T. Twaróg, Alessandro Olmi, M. Cinausero, O. Lopez, Luca Morelli, Diego Gruyer, Mariano Vigilante, P. R. Maurenzig, Silvia Piantelli, and Giovanni Casini

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Density gradient, 010308 nuclear & particles physics, 01 natural sciences, Ion, Nuclear physics, Diffusion process, Isospin, 0103 physical sciences, Atomic physics, 010306 general physics, Transport phenomena, Beam (structure), Fermi Gamma-ray Space Telescope
Abstract

Isospin transport phenomena in dissipative heavy ion collisions have been in- vestigated at Fermi energies with a beam of 84 Kr at 35AMeV. A comparison of theh Ni /Z of light and medium products forward-emitted in the centre of mass frame when the beam impinges on two different targets, the n-poor 112 Sn and the n-rich 124 Sn, is presented. Data were collected by means of a three-layer telescope with very good performances in terms of mass identification (full isotopic resolution up to Z�20 for ions punching through the first detector layer) built by the FAZIA Collaboration and located just beyond the grazing angle for both reactions. Theh Ni /Z of the products detected when the n-rich target is used is always higher than that associated to the n-poor one; since the detector was able to measure only fragments coming from the QuasiProjectile decay and/or neck emission, the observed behaviour can be ascribed to the isospin diffusion process, driven by the isospin gradient between QuasiProjectile and QuasiTarget. Moreover, for light fragments theh Ni /Z as a function of the lab velocity of the fragment is observed to increase when we move from the QuasiProjectile velocity to the centre of mass (neck zone). This effect can be interpreted as an evidence of isospin drift driven by the density gradient between the QuasiProjectile zone (at normal density) and the more diluted neck zone.

Published
2013
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12. From Light to Heavy Nuclear Systems, Production and Decay of Fragments Studied with Powerful Arrays

Author

Giorgio Baiocco, O. Lopez, M. Pârlog, Adriana Raduta, Zbigniew Sosin, Maurizio Bini, P. Kulig, G. Ademard, P. R. Maurenzig, R. Bougault, T. Marchi, U. Abbondanno, S. Appannababu, V. L. Kravchuk, M. Cinausero, F. Gramegna, D. Fabris, Andrea Stefanini, Eric Bonnet, Diego Gruyer, M. Bruno, Sandro Barlini, M.F. Rivet, M. Degerlier, Elio Rosato, Nicla Gelli, Luca Morelli, Tomasz Kozik, T. Twaróg, Silvia Piantelli, Simone Valdré, Francesca Gulminelli, Alessandro Olmi, G. Spadaccini, M. D'Agostino, N. Le Neindre, A.J. Kordyasz, Giovanni Casini, B. Borderie, A. Chbihi, J.D. Frankland, Giacomo Poggi, E. Vient, Gabriele Pasquali, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear physics, Radioactive ion beams, Particle decay, Excited state, General Physics and Astronomy, Nuclear force, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy
Abstract

International audience; Reactions between heavy-ions at various energy regimes produce many nuclear fragments which can be populatedin highly excited states. The study of these fragments, detected at the end of their particle decay, is importantto investigate nuclear forces and structure effects. In recent years there have been many efforts to extend thesestudies towards the drip-lines, i.e. to systems far from the $\beta$-stability valley, by using accelerated radioactivebeams. The development of such infrastructures is accompanied by the development of more powerful detectorsand associated electronics, capable to identify ions with very different sizes and kinetic energies. Here we give twoexamples which show how advanced arrays can contribute to the studies on nuclear phenomena. The examplescome from the European FAZIA collaboration and from recent campaigns with the GARFIELD apparatus, thelatter in operation at the INFN Legnaro Laboratory (Italy) where the SPES RIB facility is under construction

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13. N and Z odd-even staggering in Kr + Sn collisions at Fermi energies

Author

Piantelli, S., Casini, G., Valdrè, S., Bougault, R., Bonnet, E., Borderie, B., Chbihi, A., Frankland, J., Gruyer, D., Lopez, O., Le Neindre, N., Pârlog, M., Maurenzig, P., Rivet, M., Vient, E., Rosato, E., Spadaccini, G., Vigilante, M., Bruno, M., Marchi, T., Morelli, L., Cinausero, M., Degerlier, M., Olmi, A., Gramegna, F., Kozik, T., Twaróg, T., Alba, R., Maiolino, C., Santonocito, D., Barlini, S., Bini, M., Carboni, S., Pasquali, G., Poggi, G., Stefanini, A., Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), S., Piantelli, G., Casini, P. R., Maurenzig, A., Olmi, S., Barlini, M., Bini, S., Carboni, G., Pasquali, G., Poggi, A. A., Stefanini, S., Valdrè, R., Bougault, E., Bonnet, B., Borderie, A., Chbihi, J. D., Frankland, D., Gruyer, O., Lopez, N., Le Neindre, M., Pârlog, M. F., Rivet, E., Vient, Rosato, Elio, Spadaccini, Giulio, Vigilante, Mariano, M., Bruno, T., Marchi, L., Morelli, M., Cinausero, M., Degerlier, F., Gramegna, T., Kozik, T., Twaróg, R., Alba, C., Maiolino, D., Santonocito for the FAZIA collaboration, S. Piantelli, G. Casini, P. Maurenzig, A. Olmi, S. Barlini, M. Bini, S. Carboni, G. Pasquali, G. Poggi, A. Stefanini, S. Valdrè, R. Bougault, E. Bonnet, B. Borderie, A. Chbihi, J. Frankland, D. Gruyer, O. Lopez, N. Le Neindre, M. Pârlog, M. Rivet, E. Vient, E. Rosato, G. Spadaccini, M. Vigilante, M. Bruno, T. Marchi, L. Morelli, M. Cinausero, M. Degerlier, F. Gramegna, T. Kozik, T. Twaróg, R. Alba, C. Maiolino, and D. Santonocito

Subjects
NUCLEAR REACTIONS, nuclear collision, High Energy Physics::Lattice, ISOSPIN EFFECTS, multifragmentation, FOS: Physical sciences, ddc:530, staggering, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

The odd-even staggering of the yield of final reaction products has been studied as a function of proton (Z) and neutron (N) numbers for the collisions 84 Kr+112 Sn and 84 Kr+124 Sn at 35 MeV/nucleon, in a wide range of elements (up to Z ~ 20). The experimental data show that staggering effects rapidly decrease with increasing size of the fragments. Moreover the staggering in N is definitely larger than the one in Z. Similar general features are qualitatively reproduced by the GEMINI code. Concerning the comparison of the two systems, the staggering in N is in general rather similar, being slightly larger only for the lightest fragments produced in the n-rich system. In contrast the staggering in Z, although smaller than that in N, is sizably larger for the n-poor system with respect to the n-rich one., 6 pages, 5 figures, Revtex format

Published
2013
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14. Isospin transport in 84Kr + 112,124Sn collisions at Fermi energies

Author

Barlini, S., Piantelli, S., Casini, G., Maurenzig, P.R., Olmi, A., Bini, M., Carboni, S., Pasquali, G., Poggi, G., Stefanini, A.A., Bougault, R., Bonnet, Eric, Borderie, B., Chbihi, A., Frankland, J.D., Gruyer, Diego, Lopez, O., Le Neindre, N., Pârlog, M., Rivet, M. F., Vient, E., Rosato, E., Spadaccini, G., Vigilante, M., Bruno, M., Marchi, T., Morelli, L., Cinausero, M., Degerlier, M., Gramegna, F., Kozik, T., Twarog, T., Alba, R., Maiolino, C., Santonocito, D., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), FAZIA, S., Barlini, S., Piantelli, G., Casini, P. R., Maurenzig, A., Olmi, M., Bini, S., Carboni, G., Pasquali, G., Poggi, Stefanini, A. A., R., Bougault, E., Bonnet, B., Borderie, A., Chbihi, J. D., Frankland, D., Gruyer, O., Lopez, N., Le Neindre, M., Parlog, M. F., Rivet, E., Vient, Rosato, Elio, Spadaccini, Giulio, Vigilante, Mariano, M., Bruno, T., Marchi, L., Morelli, M., Cinausero, M., Degerlier, F., Gramegna, T., Kozik, T., Twarog, R., Alba, C., Maiolino, D., Santonocito, S. Barlini, S. Piantelli, G. Casini, P. R. Maurenzig, A. Olmi, M. Bini, S. Carboni, G. Pasquali, G. Poggi, A. A. Stefanini, R. Bougault, E. Bonnet, B. Borderie, A. Chbihi, J. D. Frankland, D. Gruyer, O. Lopez, N. Le Neindre, M. Pârlog, M. F. Rivet, E. Vient, E. Rosato, G. Spadaccini, M. Vigilante, M. Bruno, T. Marchi, L. Morelli, M. Cinausero, M. Degerlier, F. Gramegna, T. Kozik, T. Twaróg, R. Alba, C. Maiolino, D. Santonocito, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
NUCLEAR REACTIONS, Astrophysics::High Energy Astrophysical Phenomena, ISOSPIN, Nuclear Theory, Nucleus-nucleus collision, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], isotopic identification, Fermi energie, isospin diffusion isospin drift, ddc:530, 25.70.Lm, 25.70.Mn, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

Isotopically resolved fragments with Z, 8 pages, 7 figures

Published
2013
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15. Energy measurement and fragment identification using digital signals from partially depleted Si detectors

Author

Pasquali, G., Pastore, G., Neindre, N. Le, Ademard, G., Barlini, S., Bini, M., Bonnet, E., Borderie, B., Bougault, R., Bruno, M., Casini, G., Chbihi, A., Cinausero, M., Duenas, J. A., Edelbruck, P., Frankland, J. D., Gramegna, F., Gruyer, D., Kordyasz, A., Kozik, T., Lopez, O., Marchi, T., Morelli, L., Olmi, A., Ordine, A., Parlog, M., Piantelli, S., Poggi, G., Rivet, M. F., Rosato, E., Salomon, F., Spadaccini, G., Stefanini, A. A., Valdre, S., Vient, E., Twarog, T., Alba, R., Maiolino, C., Santonocito, D., G., Pasquali, G., Pastore, N., Le Neindre, G., Ademard, S., Barlini, M., Bini, E., Bonnet, B., Borderie, R., Bougault, M., Bruno, G., Casini, A., Chbihi, M., Cinausero, J. A., Dueña, P., Edelbruck, J. D., Frankland, F., Gramegna, D., Gruyer, A., Kordyasz, T., Kozik, O., Lopez, T., Marchi, L., Morelli, A., Olmi, A., Ordine, M., Pˆarlog, S., Piantelli, G., Poggi, M. F., Rivet, Rosato, Elio, F., Salomon, Spadaccini, Giulio, A. A., Stefanini, S., Valdrè, E., Vient, T., Twaróg, R., Alba, C., Maiolino, D., Santonocito, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), FAZIA, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, business.industry, Detector, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Particle identification, Particle detector, Semiconductor detector, psa, isotopic identification, Calibration, Optoelectronics, Figure of merit, si telescope, Wafer, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), business, Nuclear Experiment, Voltage
Abstract

A study of identification properties of a Si-Si DE-E telescope exploiting an underdepleted residual-energy detector has been performed. Five different bias voltages have been used, one corresponding to full depletion, the others associated with a depleted layer ranging from 90% to 60% of the detector thickness. Fragment identification has been performed using either the DE-E technique or Pulse Shape Analysis (PSA). Both detectors are reverse mounted: particles enter from the low field side, to enhance the PSA performance. The achieved charge and mass resolution has been quantitatively expressed using a Figure of Merit (FoM). Charge collection efficiency has been evaluated and the possibility of energy calibration corrections has been considered. We find that the DE-E performance is not affected by incomplete depletion even when only 60% of the wafer is depleted. Isotopic separation capability improves at lower bias voltages with respect to full depletion, though charge identification thresholds are higher than at full depletion. Good isotopic identification via PSA has been obtained from a partially depleted detector whose doping uniformity is not good enough for isotopic identification at full depletion., Comment: 13 pages, 10 figures 5 tables; submitted to European Physical Journal A

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