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1. Measuring the Impact of Nuclear Interaction in Particle Therapy and in Radio Protection in Space: the FOOT Experiment

Author

Battistoni, G., Toppi, M., Patera, V., Alexandrov, A., De Lellis, G., Di Crescenzo, A., Galati, G., Gentile, V., Iuliano, A., Lauria, A., Montesi, M. C., Tioukov, V., Alpat, B., Ambrosi, G., Fiandrini, E., Kanxheri, K., Placidi, P., Servoli, L., Silvestre, G., Argiro, S., Bartosik, N., Cerello, P., Donetti, M., Ferrero, V., Fiorina, E., Giraudo, G., Lopez Torres, E., Pastrone, N., Ramello, L., Scavarda, L., Sitta, M., Lante, V., Pullia, M., Savazzi, S., Arteche Diaz, R., Dong, Y., Mattei, I., Muraro, S., Valle, S. M., Belcari, N., Bisogni, M. G., Carra, P., Ciarrocchi, E., Del Guerra, A., Francesconi, M., Galli, L., Kraan, A. C., Moggi, A., Morrocchi, M., Raffaelli, F., Rosso, V., Sportelli, G., Zarrella, R., Bellinzona, E., Biondi, S., Bruni, G., Franchini, M., Mengarelli, A., Sartorelli, G., Selvi, M., Spighi, R., Villa, M., Zoccoli, A., Massimi, C., Ridolfi, R., Clozza, A., Iarocci, E., Laurenza, M., Sanelli, C., Sciubba, A., Spiriti, E., Tomassini, S., Fischetti, M., Sarti, A., Schiavi, A., De Simoni, M., Faccini, R., Franciosini, G., Marafini, M., Traini, G., Murtas, F., Colombi, S., Di Ruzza, B., La Tessa, C., Schuy, C., Scifoni, E., Durante, M., Weber, U., Finck, C., Hetzel, R., Stahl, A., Ionica, M., Morone, M. C., Narici, L., Pastore, A., Pennazio, F., Sato, O., Secher, A., Vanstalle, M., Tommasino, F., Battistoni G., Toppi M., Patera V., Alexandrov A., De Lellis G., Di Crescenzo A., Galati G., Gentile V., Iuliano A., Lauria A., Montesi M.C., Tioukov V., Alpat B., Ambrosi G., Fiandrini E., Kanxheri K., Placidi P., Servoli L., Silvestre G., Argiro S., Bartosik N., Cerello P., Donetti M., Ferrero V., Fiorina E., Giraudo G., Lopez Torres E., Pastrone N., Ramello L., Scavarda L., Sitta M., Lante V., Pullia M., Savazzi S., Arteche Diaz R., Dong Y., Mattei I., Muraro S., Valle S.M., Belcari N., Bisogni M.G., Carra P., Ciarrocchi E., Del Guerra A., Francesconi M., Galli L., Kraan A.C., Moggi A., Morrocchi M., Raffaelli F., Rosso V., Sportelli G., Zarrella R., Bellinzona E., Biondi S., Bruni G., Franchini M., Mengarelli A., Sartorelli G., Selvi M., Spighi R., Villa M., Zoccoli A., Massimi C., Ridolfi R., Clozza A., Iarocci E., Laurenza M., Sanelli C., Sciubba A., Spiriti E., Tomassini S., Fischetti M., Sarti A., Schiavi A., De Simoni M., Faccini R., Franciosini G., Marafini M., Traini G., Murtas F., Colombi S., Di Ruzza B., La Tessa C., Schuy C., Scifoni E., Durante M., Weber U., Finck C., Hetzel R., Stahl A., Ionica M., Morone M.C., Narici L., Pastore A., Pennazio F., Sato O., Secher A., Vanstalle M., Tommasino F., Battistoni, G., Toppi, M., Patera, V., De Lellis, G., Di Crescenzo, A., Lauria, A., Montesi, M. C., Durante, M., and Al., Et

Subjects
FOOT, Materials Science (miscellaneous), medicine.medical_treatment, QC1-999, cross section, fragmentation, nuclear interactions, particle therapy, protons RBE, space radioprotection, Biophysics, General Physics and Astronomy, Bragg peak, 01 natural sciences, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, hadrontherapy, 0103 physical sciences, medicine, ddc:530, Physical and Theoretical Chemistry, 010306 general physics, Nuclear Experiment, Mathematical Physics, Physics, nuclear interaction, protontherapy, Range (particle radiation), Particle therapy, Projectile, business.industry, Equivalent dose, Settore FIS/07, Fragmentation (computing), Charged particle, Radiation protection, business
Abstract

In Charged Particle Therapy (PT) proton or 12C beams are used to treat deep-seated solid tumors exploiting the advantageous characteristics of charged particles energy deposition in matter. For such projectiles, the maximum of the dose is released at the end of the beam range, in the Bragg peak region, where the tumour is located. However, the nuclear interactions of the beam nuclei with the patient tissues can induce the fragmentation of projectiles and/or target nuclei and needs to be carefully taken into account when planning the treatment. In proton treatments, the target fragmentation produces low energy, short range fragments along all the beam path, that deposit a non-negligible dose especially in the first crossed tissues. On the other hand, in treatments performed using 12C, or other (4He or 16O) ions of interest, the main concern is related to the production of long range fragments that can release their dose in the healthy tissues beyond the Bragg peak. Understanding nuclear fragmentation processes is of interest also for radiation protection in human space flight applications, in view of deep space missions. In particular 4He and high-energy charged particles, mainly 12C, 16O, 28Si and 56Fe, provide the main source of absorbed dose in astronauts outside the atmosphere. The nuclear fragmentation properties of the materials used to build the spacecrafts need to be known with high accuracy in order to optimise the shielding against the space radiation. The study of the impact of these processes, which is of interest both for PT and space radioprotection applications, suffers at present from the limited experimental precision achieved on the relevant nuclear cross sections that compromise the reliability of the available computational models. The FOOT (FragmentatiOn Of Target) collaboration, composed of researchers from France, Germany, Italy and Japan, designed an experiment to study these nuclear processes and measure the corresponding fragmentation cross sections. In this work we discuss the physics motivations of FOOT, describing in detail the present detector design and the expected performances, coming from the optimization studies based on accurate FLUKA MC simulations and preliminary beam test results. The measurements planned will be also presented.

Published
2021

2. High intensity neutrino oscillation facilities in Europe

Author

Edgecock, T., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chancé, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrycka, A., Wroblewski, A., Marie-Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, Th., Delbar, Th., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A., Kravchuk, V., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, E., Di Nitto, A., Brondi, A., La Rana, G., Migliozzi, P., Moro, R., Palladino, V., Gelli, N., Berkovits, D., Hass, M., Hirsh, T., Schaumann, M., Stahl, A., Wehner, J., Bross, A., Kopp, J., Neuffer, D., Wands, R., Bayes, R., Laing, A., Soler, P., Agarwalla, S., Cervera Villanueva, A., Donini, A., Ghosh, T., Gómez Cadenas, J., Hernández, P., Martín-Albo, J., Mena, O., Burguet-Castell, J., Agostino, L., Buizza-Avanzini, M., Marafini, M., Patzak, T., Tonazzo, A., Duchesneau, D., Mosca, L., Bogomilov, M., Karadzhov, Y., Matev, R., Tsenov, R., Akhmedov, E., Blennow, M., Lindner, M., Schwetz, T., Fernández Martinez, E., Maltoni, M., Menéndez, J., Giunti, C., González García, M., Salvado, J., Coloma, P., Huber, P., Li, T., López Pavón, J., Orme, C., Pascoli, S., Meloni, D., Tang, J., Winter, W., Ohlsson, T., Zhang, H., Scotto-Lavina, L., Terranova, F., Bonesini, M., Tortora, L., Alekou, A., Aslaninejad, M., Bontoiu, C., Kurup, A., Jenner, L., Long, K., Pasternak, J., Pozimski, J., Back, J., Harrison, P., Beard, K., Bogacz, A., Berg, J., Stratakis, D., Witte, H., Snopok, P., Bliss, N., Cordwell, M., Moss, A., Pattalwar, S., Apollonio, M., Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Souterrain de Modane (LSM - UMR 6417), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Edgecock, T, Caretta, O, Davenne, T, Densam, C, Fitton, M, Kelliher, D, Loveridge, P, Machida, S, Prior, C, Rogers, C, Rooney, M, Thomason, J, Wilcox, D, Wildner, E, Efthymiopoulos, I, Garoby, R, Gilardoni, S, Hansen, C, Benedetto, E, Jensen, E, Kosmicki, A, Martini, M, Osborne, J, Prior, G, Stora, T, Melo Mendonca, T, Vlachoudis, V, Waaijer, C, Cupial, P, Chancé, A, Longhin, A, Payet, J, Zito, M, Baussan, E, Bobeth, C, Bouquerel, E, Dracos, M, Gaudiot, G, Lepers, B, Osswald, F, Poussot, P, Vassilopoulos, N, Wurtz, J, Zeter, V, Bielski, J, Kozien, M, Lacny, L, Skoczen, B, Szybinski, B, Ustrycka, A, Wroblewski, A, Marie Jeanne, M, Balint, P, Fourel, C, Giraud, J, Jacob, J, Lamy, T, Latrasse, L, Sortais, P, Thuillier, T, Mitrofanov, S, Loiselet, M, Keutgen, T, Delbar, T, Debray, F, Trophine, C, Veys, S, Daversin, C, Zorin, V, Izotov, I, Skalyga, V, Burt, G, Dexter, A, Kravchuk, V, Marchi, T, Cinausero, M, Gramegna, F, De Angelis, G, Prete, G, Collazuol, G, Laveder, M, Mazzocco, M, Mezzetto, M, Signorini, C, Vardaci, E, Di Nitto, A, Brondi, A, La Rana, G, Migliozzi, P, Moro, R, Palladino, V, Gelli, N, Berkovits, D, Hass, M, Hirsh, T, Schaumann, M, Stahl, A, Wehner, J, Bross, A, Kopp, J, Neuffer, D, Wands, R, Bayes, R, Laing, A, Soler, P, Agarwalla, S, Cervera Villanueva, A, Donini, A, Ghosh, T, Gómez Cadenas, J, Hernández, P, Martín Albo, J, Mena, O, Burguet Castell, J, Agostino, L, Buizza Avanzini, M, Marafini, M, Patzak, T, Tonazzo, A, Duchesneau, D, Mosca, L, Bogomilov, M, Karadzhov, Y, Matev, R, Tsenov, R, Akhmedov, E, Blennow, M, Lindner, M, Schwetz, T, Fernández Martinez, E, Maltoni, M, Menéndez, J, Giunti, C, González García, M, Salvado, J, Coloma, P, Huber, P, Li, T, López Pavón, J, Orme, C, Pascoli, S, Meloni, D, Tang, J, Winter, W, Ohlsson, T, Zhang, H, Scotto Lavina, L, Terranova, F, Bonesini, M, Tortora, L, Alekou, A, Aslaninejad, M, Bontoiu, C, Kurup, A, Jenner, L, Long, K, Pasternak, J, Pozimski, J, Back, J, Harrison, P, Beard, K, Bogacz, A, Berg, J, Stratakis, D, Witte, H, Snopok, P, Bliss, N, Cordwell, M, Moss, A, Pattalwar, S, Apollonio, M, European Commission, Bulgarian National Science Fund, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-AstroParticule et Cosmologie (APC (UMR_7164)), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-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)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, 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 Grenoble Alpes [2016-2019] (UGA [2016-2019]), Edgecock, T. R., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chance, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrycka, A., Wroblewski, A., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A. C., Kravchuk, V. L., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, Emanuele, Di Nitto, A., Brondi, Augusto, LA RANA, Giovanni, Migliozzi, Pasquale, Moro, RENATA EMILIA MARIA, Palladino, Vittorio, Gelli, N., Berkovits, D., Hass, M., Hirsh, T. Y., Schaumann, M., Stahl, A., J. W. e. h. n. e. r., Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), 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)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), and Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 7. Clean energy, 01 natural sciences, Nuclear physics, neutrino, 0103 physical sciences, Emma, Fysik, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, 010306 general physics, Neutrino oscillation, QC, Astroparticle physics, Physics, Large Hadron Collider, Beta-Beam, 010308 nuclear & particles physics, Física, Surfaces and Interfaces, Accelerators and Storage Rings, Neutrino detector, Physical Sciences, lcsh:QC770-798, Physics::Accelerator Physics, Neutrino Factory, High Energy Physics::Experiment, Neutrino, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Storage ring, Lepton
Abstract

The EUROnu project has studied three possible options for future, high intensity neutrino oscillation facilities in Europe. The first is a Super Beam, in which the neutrinos come from the decay of pions created by bombarding targets with a 4 MW proton beam from the CERN High Power Superconducting Proton Linac. The far detector for this facility is the 500 kt MEMPHYS water Cherenkov, located in the Frejus tunnel. The second facility is the Neutrino Factory, in which the neutrinos come from the decay of mu(+) and mu(-) beams in a storage ring. The far detector in this case is a 100 kt magnetized iron neutrino detector at a baseline of 2000 km. The third option is a Beta Beam, in which the neutrinos come from the decay of beta emitting isotopes, in particular He-6 and Ne-18, also stored in a ring. The far detector is also the MEMPHYS detector in the Frejus tunnel. EUROnu has undertaken conceptual designs of these facilities and studied the performance of the detectors. Based on this, it has determined the physics reach of each facility, in particular for the measurement of CP violation in the lepton sector, and estimated the cost of construction. These have demonstrated that the best facility to build is the Neutrino Factory. However, if a powerful proton driver is constructed for another purpose or if the MEMPHYS detector is built for astroparticle physics, the Super Beam also becomes very attractive., We acknowledge the financial support of the European Community under the European Commission Framework Program 7 Design Study: EUROnu, Project No. 212372 and from the National Science Fund of Bulgaria under Contract No. 02-149/07.10.2009

Published
2013

3. Ion charge separation with new generation of nuclear emulsion films

Author

E. Bellinzona, Alberto Mengarelli, M. Villa, E. Fiandrini, F. Raffaelli, Y. Dong, M. Ionica, Esther Ciarrocchi, Marco Francesconi, Nadia Pastrone, Francesco Pennazio, P. Carra, R. Spighi, Alessio Sarti, Antonio Zoccoli, M. Pullia, F. Ferroni, Pisana Placidi, M. Vanstalle, G. Silvestre, M. Emde, C. La Tessa, S. Muraro, L. Narici, M. C. Morone, A.C. Kraan, Marco Durante, R. Arteche Diaz, A. Di Crescenzo, L. Alunni Solestizi, Valeria Rosso, A. Secher, Niccolò Camarlinghi, L. Ramello, Nicola Belcari, E. Iarocci, L. Galli, M. De Simoni, Riccardo Faccini, E. Lopez Torres, C. Finck, Mario Sitta, M. Rovituso, G. De Lellis, M. Marafini, Marco Donetti, Gabriella Sartorelli, V. Gentile, S. Bianucci, Vincenzo Patera, Alberto Clozza, S. Savazzi, M. Fischetti, C. Sanelli, S. M. Valle, A. Sciubba, Osamu Sato, Adele Lauria, E. Scifoni, A. Embriaco, M. Selvi, Ambrosi Giovanni, Maria Cristina Montesi, Francesco Tommasino, Matteo Franchini, Veronica Ferrero, S. Colombi, K. Kanxheri, Christoph Schuy, Uli Weber, Leonello Servoli, A. Alexandrov, Achim Stahl, Stefano Argiro, A. Moggi, R. Mirabelli, Ilaria Mattei, Matteo Morrocchi, M. Garbini, R. Ridolfi, Giacomo Traini, L. Scavarda, Eleuterio Spiriti, Piergiorgio Cerello, V. Lante, Elisa Fiorina, R. Hetzel, Alessandra Pastore, Silvia Biondi, Giuseppe Battistoni, A. Del Guerra, Giuseppe Giraudo, G. Galati, N. Bartosik, Valeri Tioukov, Graziano Bruni, Sandro Tomassini, Giancarlo Sportelli, M. G. Bisogni, A. Schiavi, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Montesi M.C., Lauria A., Alexandrov A., Solestizi L.A., Giovanni A., Argiro S., Diaz R.A., Bartosik N., Battistoni G., Belcari N., Bellinzona E., Bianucci S., Biondi S., Bisogni M.G., Bruni G., Camarlinghi N., Carra P., Cerello P., Ciarrocchi E., Clozza A., Colombi S., Guerra A.D., Simoni M.D., Crescenzo A.D., Donetti M., Dong Y., Durante M., Embriaco A., Emde M., Faccini R., Ferrero V., Ferroni F., Fiandrini E., Finck C., Fiorina E., Fischetti M., Francesconi M., Franchini M., Galati G., Galli L., Garbini M., Gentile V., Giraudo G., Hetzel R., Iarocci E., Ionica M., Kanxheri K., Kraan A.C., Lante V., Tessa C.L., Torres E.L., Marafini M., Mattei I., Mengarelli A., Mirabelli R., Moggi A., Morone M.C., Morrocchi M., Muraro S., Narici L., Pastore A., Pastrone N., Patera V., Pennazio F., Placidi P., Pullia M., Raffaelli F., Ramello L., Ridolfi R., Rosso V., Rovituso M., Sanelli C., Sarti A., Sartorelli G., Sato O., Savazzi S., Scavarda L., Schiavi A., Schuy C., Scifoni E., Sciubba A., Secher A., Selvi M., Servoli L., Silvestre G., Sitta M., Spighi R., Spiriti E., Sportelli G., Stahl A., Tioukov V., Tomassini S., Tommasino F., Traini G., Valle S.M., Vanstalle M., Villa M., Weber U., Zoccoli A., Lellis G.D., Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Montesi, M. C., Lauria, A., Alexandrov, A., Solestizi, L. Alunni, Giovanni, Ambrosi, Argirò, S., Diaz, R. Arteche, Bartosik, N., Battistoni, G., Belcari, N., Bellinzona, E., Bianucci, S., Biondi, S., Bisogni, M. G., Bruni, G., Camarlinghi, N., Carra, P., Cerello, P., Ciarrocchi, E., Clozza, A., Colombi, S., Guerra, A. Del, Simoni, M. De, Crescenzo, A. Di, Donetti, M., Dong, Y., Durante, M., Embriaco, A., Emde, M., Faccini, R., Ferrero, V., Ferroni, F., Fiandrini, E., Finck, C., Fiorina, E., Fischetti, M., Francesconi, M., Franchini, M., Galati, G., Galli, L., Garbini, M., Gentile, V., Giraudo, G., Hetzel, R., Iarocci, E., Ionica, M., Kanxheri, K., Kraan, A. C., Lante, V., Tessa, C. La, Torres, E. Lopez, Marafini, M., Mattei, I., Mengarelli, A., Mirabelli, R., Moggi, A., Morone, M. C., Morrocchi, M., Muraro, S., Narici, L., Pastore, A., Pastrone, N., Patera, V., Pennazio, F., Placidi, P., Pullia, M., Raffaelli, F., Ramello, L., Ridolfi, R., Rosso, V., Rovituso, M., Sanelli, C., Sarti, A., Sartorelli, G., Sato, O., Savazzi, S., Scavarda, L., Schiavi, A., Schuy, C., Scifoni, E., Sciubba, A., Sécher, A., Selvi, M., Servoli, L., Silvestre, G., Sitta, M., Spighi, R., Spiriti, E., Sportelli, G., Stahl, A., Tioukov, V., Tomassini, S., Tommasino, F., Traini, G., Valle, S. M., Vanstalle, M., Villa, M., Weber, U., Zoccoli, A., and Lellis, G. De

Subjects
Health Physics and Radiation Effects, Materials science, QC1-999, General Physics and Astronomy, 29.40.Rg, 7. Clean energy, 01 natural sciences, 030218 nuclear medicine & medical imaging, Ion, 03 medical and health sciences, 0302 clinical medicine, Charge identification, 0103 physical sciences, charged particles therapy, nuclear emulsions, Nuclear emulsion, ddc:530, Detectors and Experimental Techniques, 42.62.Be, Nuclear Experiment, [PHYS]Physics [physics], 010308 nuclear & particles physics, Settore FIS/04, Physics, Settore FIS/07, Chemical physics
Abstract

In hadron therapy, the accelerated ions, interacting with the body of the patient, cause the fragmentation of both projectile and target nuclei. The fragments interact with the human tissues depositing energy both in the entrance channel and in the volume surrounding the tumor. The knowledge of the fragments features is crucial to determine the energy amount deposited in the human body, and - hence - the damage to the organs and to the tissues around the tumor target. The FOOT (FragmentatiOn Of Target) experiment aims at studying the fragmentation induced by the interaction of a proton beam (150-250 MeV/n) inside the human body. The FOOT detector includes an electronic setup for the identification of Z ≥ 3 fragments integrated with an emulsion spectrometer to measure Z ≤ 3 fragments. Charge identification by nuclear emulsions is based on the development of techniques of controlled fading of the particle tracks inside the nuclear emulsion, that extend the dynamical range of the films developed for the tracking of minimum ionising particles. The controlled fading strongly depends on temperature, relative humidity and treatment duration. In this study the performances in terms of charge separation of proton, helium and carbon particles, obtained on a batch of new emulsion films produced in Japan are reported.

Published
2019

4. Performance of an optically read out time projection chamber with ultra-relativistic electrons

Author

E. Paoletti, R. A. Nobrega, G. Maccarrone, D. Piccolo, F. Renga, L. Passamonti, A. D. Russo, Davide Pinci, D. Pierluigi, F. Rosatelli, G. Dho, V. C. Antochi, I.A. Costa, G. Cavoto, Giovanni Mazzitelli, A.F.V. Cortez, C. Capoccia, S. Bianco, C. Voena, Francesco Iacoangeli, E. Baracchini, G. D'Imperio, E. Di Marco, Fabrizio Petrucci, G. Saviano, Michele Arturo Caponero, L. Benussi, M. Marafini, A. Orlandi, A. Messina, Sandro Tomassini, Antochi, V. C., Baracchini, E., Benussi, L., Bianco, S., Capoccia, C., Caponero, M., Cavoto, G., Cortez, A., Costa, I. A., Di Marco, E., D’Imperio, G, Dho, G., Iacoangeli, F., Maccarrone, G., Marafini, M., Mazzitelli, G., Messina, A, Nóbrega, R. A., Orlandi, A., Paoletti, E., Passamonti, L., Petrucci, F., Piccolo, D., Pierluigi, D., Pinci, D., Renga, F., Rosatelli, F., Russo, A., Saviano, G., Tomassini, S., and Voena, C.

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Solar neutrino, Dark matter, FOS: Physical sciences, Applied Physics (physics.app-ph), Electron, 7. Clean energy, 01 natural sciences, dark matter, Nuclear physics, Ionization, 0103 physical sciences, GEM, MPGD, optical readout, TPC, tracking detector, 010306 general physics, Instrumentation, Physics, CMOS sensor, Time projection chamber, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), Physics - Applied Physics, Charged particle, Beam (structure)
Abstract

The Time Projection Chamber (TPC) is an ideal candidate to finely study the charged particle ionization in a gaseous medium. Large volume TPCs can be readout with a suitable number of channels offering a complete 3D reconstruction of a charged particle track, that is the sequence of its energy releases in the TPC gas volume. Moreover, He-based TPCs are very promising to study keV energy particles as nuclear recoils, opening the possibility for directional searches of Dark Matter (DM) and the study of Solar Neutrinos (SN). In this paper we report the analysis of the data acquired with a small TPC prototype (named LEMOn) built by the CYGNO collaboration that was exposed to a beam of 450 MeV electrons at the Beam Test Facility of National Laboratories of Frascati. LEMOn is operated with a He-C F 4 mixture at atmospheric pressure and is based on a Gas Electron Multipliers amplification stage that produces visible light collected by the high granularity and very good sensitivity of scientific CMOS camera. This type of readout – in conjunction with a fast light detection – allows a 3D reconstruction of the electrons tracks. The electrons are leaving a trail of clusters of ionizations corresponding to a few keV energy release each. Their study leads to predict a keV energy threshold and 1–10 mm longitudinal and 0.1–0.3 mm transverse position resolution (sigma) for nuclear recoils, very promising for the application of optically read out TPC to DM searches and SN measurements.

Published
2021
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5. Charge identification of fragments with the emulsion spectrometer of the FOOT experiment

Author

Maria Ionica, Eleuterio Spiriti, P. Carra, N. Bartosik, L. Scavarda, Osamu Sato, Adele Lauria, G. Silvestre, Alberto Del Guerra, Giovanni Ambrosi, Valeri Tioukov, Maria Cristina Montesi, Maria Giuseppina Bisogni, Nadia Pastrone, Alberto Clozza, S. Savazzi, M. Pullia, Alessandra Pastore, Antonio Zoccoli, M. Vanstalle, A. Moggi, E. Bellinzona, V. Lante, Elisa Fiorina, Antonia Di Crescenzo, A. Secher, Ilaria Mattei, Stefano Argiro, Giovanni De Lellis, Antonio Iuliano, Giuliana Galati, Chiara La Tessa, V. Gentile, Gaia Franciosini, Matteo Morrocchi, Luciano Ramello, R. Ridolfi, Giacomo Traini, Silvia Muraro, M. Selvi, Francesco Pennazio, Marco Francesconi, Michela Marafini, Alessio Sarti, A.C. Kraan, Marco Durante, M. Toppi, Pisana Placidi, S. Colombi, F. Raffaelli, C. Finck, Andrey Alexandrov, Christoph Schuy, Valeria Rosso, Adalberto Sciubba, Keida Kanxheri, Behcet Alpat, Nicola Belcari, Leonello Servoli, Sandro Tomassini, Achim Stahl, Angelo Schiavi, Giancarlo Sportelli, Ulrich Weber, Benedetto Di Ruzza, Luca Galli, R. Spighi, E. Iarocci, Martina Laurenza, Roberto Zarrella, Graziano Bruni, Raul Arteche Diaz, S. M. Valle, Y. Dong, Veronica Ferrero, R. Hetzel, Riccardo Faccini, Ernesto Lopez Torres, Silvia Biondi, Giuseppe Battistoni, Mario Sitta, M. Fischetti, Micol De Simoni, E. Scifoni, M. C. Morone, Giuseppe Giraudo, Marco Donetti, Gabriella Sartorelli, Vincenzo Patera, Federica Murtas, Alberto Mengarelli, Francesco Tommasino, E. Fiandrini, Esther Ciarrocchi, Mauro Villa, Matteo Franchini, Piergiorgio Cerello, Cristian Massimi, C. Sanelli, Galati G., Alexandrov A., Alpat B., Ambrosi G., Argiro S., Diaz R.A., Bartosik N., Battistoni G., Belcari N., Bellinzona E., Biondi S., Bisogni M.G., Bruni G., Carra P., Cerello P., Ciarrocchi E., Clozza A., Colombi S., Guerra A.D., Simoni M.D., Di Crescenzo A., Ruzza B.D., Donetti M., Dong Y., Durante M., Faccini R., Ferrero V., Fiandrini E., Finck C., Fiorina E., Fischetti M., Francesconi M., Franchini M., Franciosini G., Galli L., Gentile V., Giraudo G., Hetzel R., Iarocci E., Ionica M., Iuliano A., Kanxheri K., Kraan A.C., Lante V., Tessa C.L., Laurenza M., Lauria A., Torres E.L., Marafini M., Massimi C., Mattei I., Mengarelli A., Moggi A., Montesi M.C., Morone M.C., Morrocchi M., Muraro S., Murtas F., Pastore A., Pastrone N., Patera V., Pennazio F., Placidi P., Pullia M., Raffaelli F., Ramello L., Ridolfi R., Rosso V., Sanelli C., Sarti A., Sartorelli G., Sato O., Savazzi S., Scavarda L., Schiavi A., Schuy C., Scifoni E., Sciubba A., Secher A., Selvi M., Servoli L., Silvestre G., Sitta M., Spighi R., Spiriti E., Sportelli G., Stahl A., Tioukov V., Tomassini S., Tommasino F., Toppi M., Traini G., Valle S.M., Vanstalle M., Villa M., Weber U., Zarrella R., Zoccoli A., De Lellis G., De Lellis, Giovanni, Di Crescenzo, Antonia, Montesi, Maria Cristina, Lauria, Adele, Iuliano, Antonio, and Durante, Marco

Subjects
Materials science, Spectrometer, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Physics, QC1-999, Settore FIS/07, Analytical chemistry, General Physics and Astronomy, Charge (physics), 01 natural sciences, Fragmentation (mass spectrometry), particle therapy, nuclear emulsion, fragmentation, 0103 physical sciences, Emulsion, ddc:530, Nuclear emulsion, Nuclear Experiment, 010306 general physics
Abstract

Open physics 19(1), 383 - 394 (2021). doi:10.1515/phys-2021-0032, Published by de Gruyter, Berlin

Published
2021

6. Measurement of 12C Fragmentation Cross Sections on C, O, and H in the Energy Range of Interest for Particle Therapy Applications

Author

E. Spiriti, P. Cerello, G. De Lellis, Alberto Mengarelli, Angelo Schiavi, M. Francesconi, Nicola Belcari, L. Scavarda, E. Iarocci, F. Ferroni, C. La Tessa, Sandro Tomassini, Cristian Massimi, Giancarlo Sportelli, R. Ridolfi, Nadia Pastrone, A. Embriaco, P. Carra, M. Pullia, G. Silvestre, Silvia Muraro, Giacomo Traini, M. Marafini, M. Emde, S. Colombi, E. Catanzani, G. Ambrosi, A. Di Crescenzo, C. Sanelli, Francesco Tommasino, Francesco Pennazio, Y. Dong, Leonello Servoli, R. Mirabelli, M. Rovituso, Alberto Clozza, S. Savazzi, C. Schuy, Alessio Sarti, A. Del Guerra, Luca Galli, C. Finck, Matteo Franchini, E. Fiandrini, A. Alexandrov, S. M. Valle, M. Ionica, R. Hetzel, Sebastian Hild, Silvia Biondi, Giuseppe Battistoni, Esther Ciarrocchi, Valeria Rosso, Mario Sitta, Maria Cristina Montesi, R. Faccini, A. Stahl, Antonio Zoccoli, V. Lante, Elisa Fiorina, M. Vanstalle, Vincenzo Patera, A. Secher, A. Sciubba, M. Fischetti, M. De Simoni, E. Scifoni, N. Bartosik, Graziano Bruni, Luciano Ramello, M. Selvi, Stefano Argiro, M. C. Morone, A. C. Kraan, Niccolò Camarlinghi, Mauro Villa, L. Alunni Solestizi, K. Kanxheri, Ilaria Mattei, Matteo Morrocchi, V. Gentile, Veronica Ferrero, Osamu Sato, Adele Lauria, M. Donetti, M. Toppi, Pisana Placidi, R. Spighi, Maria Giuseppina Bisogni, Marco Durante, G. Sartorelli, Ulrich Weber, Alessandro Pastore, T. Valeri, E. Lopez Torres, L. Narici, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Istituto Nazionale di Fisica Nucleare (INFN), Politecnico di Torino = Polytechnic of Turin (Polito), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), European Synchrotron Radiation Facility (ESRF), Laboratori Nazionali di Frascati (LNF), Institut d'Astrophysique de Paris (IAP), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Department of Engineering, Università degli Studi di Ferrara (UniFE), Department of Materials [ETH Zürich] (D-MATL), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Biophysics Department [Darmstadt], Helmholtz Centre for Heavy Ion Research (GSI), Dipartimento di Fisica dell'Università di Bologna, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (INFN, Sezione di Bologna), Istituto Nazionale di Fisica Nucleare (INFN)- Istituto Nazionale di Fisica Nucleare (INFN)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), University of York [York, UK], Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Dipartimento di Energetica, Trento Institute for Fundamental Physics and Applications, Italy, Mattei, I., Bisogni, M. G., Bruni, G., Camarlinghi, N., Carra, P., Catanzani, E., Ciarrocchi, E., Cerello, P., Clozza, A., Colombi, S., De Lellis, G., Alexandrov, A., Del Guerra, A., De Simoni, M., Di Crescenzo, A., Donetti, M., Dong, Y., Durante, M., Embriaco, A., Emde, M., Faccini, R., Ferrero, V., Alunni Solestizi, L., Ferroni, F., Fiandrini, E., Finck, C., Fiorina, E., Fischetti, M., Francesconi, M., Franchini, M., Galli, L., Gentile, V., Hetzel, R., Ambrosi, G., Hild, S., Iarocci, E., Ionica, M., Kanxheri, K., Kraan, A. C., Lante, V., Lauria, A., La Tessa, C., Lopez Torres, E., Massimi, C., Argiro, S., Marafini, M., Mengarelli, A., Mirabelli, R., Montesi, M. C., Morone, M. C., Morrocchi, M., Muraro, S., Narici, L., Pastore, A., Pastrone, N., Bartosik, N., Patera, V., Pennazio, F., Placidi, P., Pullia, M., Ramello, L., Ridolfi, R., Rosso, V., Rovituso, M., Sanelli, C., Sartorelli, G., Battistoni, G., Sato, O., Savazzi, S., Scavarda, L., Schiavi, A., Schuy, C., Scifoni, E., Sciubba, A., Secher, A., Selvi, M., Servoli, L., Belcari, N., Silvestre, G., Sitta, M., Spighi, R., Spiriti, E., Sportelli, G., Stahl, A., Tomassini, S., Tommasino, F., Traini, G., Toppi, M., Biondi, S., Valeri, T., Valle, S. M., Vanstalle, M., Villa, M., Weber, U., Zoccoli, A., Sarti, A., Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Ferrara = University of Ferrara (UniFE), Dipartimento di Fisica [Bologna], Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), and Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA)

Subjects
Materials science, Proton, Radiation therapy clinical/preclinical evaluation/application studies, Analytical chemistry, Scintillator, scintillators radiation detector, Kinetic energy, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Radiation therapy studie, 0103 physical sciences, Radiology, Nuclear Medicine and imaging, 010306 general physics, Instrumentation, ComputingMilieux_MISCELLANEOUS, Range (particle radiation), Settore FIS/04, scintillators radiation detectors for medical applications, Settore FIS/07, Center (category theory), therapy imaging clinical/preclinical evaluation/application studies, Atomic and Molecular Physics, and Optics, Charged particle, Deuterium, [PHYS.PHYS.PHYS-MED-PH]Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph], therapy imaging
Abstract

In a carbon ion treatment the nuclear fragmentationof both target and beam projectiles impacts on the dose releasedon the tumor and on the surrounding healthy tissues. Carbon ionfragmentation occurring inside the patient body has to be stud-ied in order to take into account this contribution. These dataare also important for the development of the range monitoringtechniques with charged particles. The production of chargedfragments generated by carbon ion beams of 115-353 MeV/ukinetic energy impinging on carbon, oxygen, and hydrogen tar-gets has been measured at the CNAO particle therapy center(Pavia, Italy). The use of thin targets of graphite (C), PMMA(C2O5H8) and polyvinyl-toluene [plastic scintillator (PS), CbHa]allowed to measure fragments production cross sections, exploit-ing a time-of-flight (ToF) technique. PS detectors have been usedto perform the ToF measurements, while LYSO crystals havebeen used for the deposited energy measurement and to performparticle identification. Cross sections have been measured at 90◦and 60◦with respect to the beam direction. The measured pro-ton, deuteron, and triton differential production cross sectionson C, O, and H, obtained exploiting the target subtraction strat-egy, are presented here as a function of the fragment kineticenergy.

Published
2020

7. CYGNO: a gaseous TPC with optical readout for dark matter directional search

Author

Sandro Tomassini, Francesco Iacoangeli, A.F.V. Cortez, A. Messina, G. Dho, L. Benussi, R. A. Nobrega, A. Orlandi, Davide Pinci, D. Piccolo, Fabrizio Petrucci, I. A. Costa, F. Rosatelli, E. Paoletti, Michele Arturo Caponero, G. Cavoto, G. Maccarrone, Giovanni Mazzitelli, G. Saviano, A. D. Russo, D. Pierluigi, S. Bianco, E. Baracchini, G. D'Imperio, E. Di Marco, F. Renga, Michela Marafini, C. Capoccia, L. Passamonti, Baracchini, E., Benussi, L., Bianco, S., Capoccia, C., Caponero, M., Cavoto, G., Cortez, A., Costa, I. A., Marco, E. D., D'Imperio, G., Dho, G., Iacoangeli, F., Maccarrone, G., Marafini, M., Mazzitelli, G., Messina, A., Nobrega, R. A., Orlandi, A., Paoletti, E., Passamonti, L., Petrucci, F., Piccolo, D., Pierluigi, D., Pinci, D., Renga, F., Rosatelli, F., Russo, A., Saviano, G., and Tomassini, S.

Subjects
axions, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Particle tracking detectors (Gaseous detectors), Solar neutrino, Dark matter, FOS: Physical sciences, Electron, 01 natural sciences, 7. Clean energy, Signal, etc, ), 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, Recoil, 0103 physical sciences, Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc), dark matter, gas time projection chamber, Instrumentation, Dark Matter detectors (WIMPs, Mathematical Physics, CMOS readout of gaseous detectors, Physics, Atmospheric pressure, 010308 nuclear & particles physics, business.industry, Detector, Instrumentation and Detectors (physics.ins-det), Dark Matter detectors (WIMPs, axions, etc,), Neutrino, business
Abstract

The CYGNO project has the goal to use a gaseous TPC with optical readout to detect dark matter and solar neutrinos with low energy threshold and directionality. The CYGNO demonstrator will consist of 1 m 3 volume filled with He:CF 4 gas mixture at atmospheric pressure. Optical readout with high granularity CMOS sensors, combined with fast light detectors, will provide a detailed reconstruction of the event topology. This will allow to discriminate the nuclear recoil signal from the background, mainly represented by low energy electron recoils induced by radioactivity. Thanks to the high reconstruction efficiency, CYGNO will be sensitive to low mass dark matter, and will have the potential to overcome the neutrino floor, that ultimately limits non-directional dark matter searches.

Published
2020

8. Stability and detection performance of a GEM-based Optical Readout TPC with He/CF$_4$ gas mixtures

Author

A. Orlandi, E. Paoletti, F. Rosatelli, G. Maccarrone, D. Pierluigi, G. Saviano, Antonio Russo, Michele Arturo Caponero, G. Mazzitelli, Sandro Tomassini, R. A. Nobrega, A.F.V. Cortez, Andrea Messina, I. A. Costa, Stefano Bianco, G. Cavoto, L. Passamonti, M. Marafini, G. D'Imperio, D. Pinci, C. Capoccia, Francesco Iacoangeli, F. Renga, G. Dho, E. Baracchini, E. Di Marco, Fabrizio Petrucci, Davide Piccolo, Luisa Benussi, Baracchini, E., Benussi, L., Bianco, S., Capoccia, C., Caponero, M., Cavoto, G., Cortez, A., Costa, I. A., Di Marco, E., D'Imperio, G., Dho, G., Iacoangeli, F., Maccarrone, G., Marafini, M., Mazzitelli, G., Messina, A., Nobrega, R. A., Orlandi, A., Paoletti, E., Passamonti, L., Petrucci, F., Piccolo, D., Pierluigi, D., Pinci, D., Renga, F., Rosatelli, F., Russo, A., Saviano, G., and Tomassini, S.

Subjects
Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Time projection Chambers (TPC), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Stability (probability), High Energy Physics - Experiment, 3. Good health, High Energy Physics - Experiment (hep-ex), Gaseous imaging and tracking detectors, Dark Matter detectors (WIMPs Axions Etc.), Micropattern gaseous detectors (MSGC GEM THGEM RETHGEM MHSP MICROPIC MICROMEGAS InGrid Etc), 0103 physical sciences, Optoelectronics, Detection performance, Gaseous imaging and tracking detector, 010306 general physics, business, Instrumentation, Mathematical Physics
Abstract

The performance and long term stability of an optically readout Time Projection Chamber with an electron amplification structure based on three Gas Electron Multipliers was studied. He/CF$_4$ based gas mixtures were used in two different proportions (60/40 and 70/30) in a CYGNO prototype with 7 litres sensitive volume. With electrical configurations providing very similar electron gains, an almost full detection efficiency in the whole detector volume was found with both mixtures, while a light yield about 20\% larger for the 60/40 was found. The electrostatic stability was tested by monitoring voltages and currents during 25 days. The detector worked in very stable and safe condition for the whole period. In the presence of less CF$_4$, a larger probability of unstable events was clearly detected.

Published
2020
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9. Identification of low energy nuclear recoils in a gas time projection chamber with optical readout

Author

Sandro Tomassini, R. A. Nobrega, G. Saviano, E. Paoletti, G. Dho, F. Rosatelli, G. Maccarrone, Antonio Russo, Francesco Iacoangeli, M. Marafini, F. Renga, L. Passamonti, G. D'Imperio, Michele Arturo Caponero, D. Pinci, E. Baracchini, E. Di Marco, Stefano Bianco, G. Mazzitelli, G. Cavoto, Fabrizio Petrucci, Andrea Messina, C. Capoccia, Davide Piccolo, I. A. Costa, A. Orlandi, A.F.V. Cortez, Luisa Benussi, Roberto Tesauro, D. Pierluigi, Baracchini, E, Benussi, L, Bianco, S, Capoccia, C, Caponero, M, Cavoto, G, Cortez, A, A Costa, I, Di Marco, E, D???imperio, G, Dho, G, Iacoangeli, F, Maccarrone, G, Marafini, M, Mazzitelli, G, Messina, A, A Nobrega, R, Orlandi, A, Paoletti, E, Passamonti, L, Petrucci, F, Piccolo, D, Pierluigi, D, Pinci, D, Renga, F, Rosatelli, F, Russo, A, Saviano, G, Tesauro, R, and Tomassini, S

Subjects
Physics, Time projection chamber, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Applied Mathematics, 01 natural sciences, dark matter, Identification (information), Optics, Low energy, instrumentation and detector, image reconstruction algorithms, 0103 physical sciences, 010306 general physics, business, Instrumentation, Engineering (miscellaneous), high-energy physic
Abstract

The search for a novel technology, which is able to detect and reconstruct nuclear recoil events in the keV energy range, has become increasingly important now that vast regions of high mass weakly-interacting-massive-particle–like dark matter candidates have been excluded. Gaseous time projection chambers (TPC) with optical readout are very promising candidates combining the complete event information provided by the TPC technique with the high sensitivity and granularity of the latest generation light sensors. A TPC with an amplification at the anode, obtained with gas electron multipliers (GEMs), was tested at the Laboratori Nazionali di Frascati. Photons and neutrons from radioactive sources were employed to induce recoiling nuclei and electrons with kinetic energy in the range 1–100 keV. A He-CF4 (60/40) gas mixture was used at atmospheric pressure and the light produced during the multiplication in the GEM channels was acquired by a high-position resolution and low-noise complementary metal-oxide semiconductor camera and a photomultiplier. A multi-stage pattern recognition algorithm based on an advanced clustering technique is presented here. A number of cluster-shaped observables are used to identify nuclear recoils induced by neutrons, which originated from a AmBe source against x-ray 55Fe photoelectrons. An efficiency of 18% to detect nuclear recoils with an energy of about 6 keV is reached, while suppressing 96% of the 55Fe photoelectrons, making this optical read-out gas TPC a very promising candidate for future investigations of ultra-rare events such as directional direct dark matter searches.

Published
2020

10. FOOT: a new experiment to measure nuclear fragmentation at intermediate energies

Author

M. Pullia, E. Iarocci, Nadia Pastrone, C. La Tessa, M. Emde, M. Rovituso, Alberto Clozza, C. Sanelli, M. C. Morone, A. Di Crescenzo, G. Ambrosi, L. Narici, Giancarlo Sportelli, Veronica Ferrero, Francesco Tommasino, Matteo Franchini, Maria Cristina Montesi, M. Ionica, Stefano Argiro, Niccolò Camarlinghi, R. Faccini, Mauro Villa, Gabriella Sartorelli, Antonio Zoccoli, L. Galli, M. Vanstalle, K. Kanxheri, Christoph Schuy, Esther Ciarrocchi, Vincenzo Patera, A. Sciubba, Marco Durante, Valeria Rosso, M. Selvi, Ilaria Mattei, M. Sitta, M. Garbini, Uli Weber, Matteo Morrocchi, Giacomo Traini, Marco Francesconi, Piergiorgio Cerello, Eleuterio Spiriti, Nicola Belcari, S. Brambilla, L. Ramello, R. Hetzel, C. Finck, Andrey Alexandrov, Silvia Biondi, Giuseppe Battistoni, Osamu Sato, Adele Lauria, M. Marafini, Giuseppe Giraudo, R. Mirabelli, R. Spighi, F. Ferroni, Silvia Muraro, Leonello Servoli, Achim Stahl, S. M. Valle, G. De Lellis, Graziano Bruni, Angelo Schiavi, Alessio Sarti, Maria Giuseppina Bisogni, E. Scifoni, Alessandra Pastore, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Valle, S.M., Alexandrov, A., Ambrosi, G., Argirò, S., Battistoni, G., Belcari, N., Biondi, S., Bisogni, M.G., Bruni, G., Brambilla, S., Camarlinghi, N., Cerello, P., Ciarrocchi, E., Clozza, A., De Lellis, G., Di Crescenzo, A., Durante, M., Emde, M., Faccini, R., Ferrero, V., Ferroni, F., Finck, C., Francesconi, M., Franchini, M., Galli, L., Garbini, M., Giraudo, G., Hetzel, R., Iarocci, E., Ionica, M., Kanxheri, K., Lauria, A., La Tessa, C., Marafini, M., Mattei, I., Mirabelli, R., Montesi, M.C., Morone, M.C., Morrocchi, M., Muraro, S., Narici, L., Pastore, A., Pastrone, N., Patera, V., Pullia, M., Ramello, L., Rosso, V., Rovituso, M., Sanelli, C., Sarti, A., Sartorelli, G., Sato, O., Schiavi, A., Schuy, C., Scifoni, E., Sciubba, A., Selvi, M., Servoli, L., Sitta, M., Spighi, R., Spiriti, E., Sportelli, G., Stahl, A., Tommasino, F., Traini, G., Vanstalle, M., Villa, M., Weber, U., Zoccoli, A., Valle, S. M., Bisogni, M. G., Montesi, M. C., and Morone, M. C.

Subjects
Materials science, Tracking detector, medicine.medical_treatment, Quantitative Biology::Tissues and Organs, Physics::Medical Physics, Bragg peak, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Fragmentation (mass spectrometry), Hadrontherapy, 0103 physical sciences, medicine, lcsh:Science, lcsh:Science (General), 010306 general physics, Nuclear Experiment, Particle therapy, cross section, 010308 nuclear & particles physics, Projectile, Settore FIS/04, Settore FIS/07, Nuclear fragmentation, Scintillating detectors, Charged particle, Time of flight, Physics::Accelerator Physics, lcsh:Q, Beam (structure), lcsh:Q1-390
Abstract

Summary: Charged particle therapy exploits proton or 12C beams to treat deep-seated solid tumors. Due to the advantageous characteristics of charged particles energy deposition in matter, the maximum of the dose is released to the tumor at the end of the beam range, in the Bragg peak region. However, the beam nuclear interactions with the patient tissues induces fragmentation both of projectile and target nuclei and needs to be carefully taken into account. In proton treatments, target fragmentation produces low energy, short range fragments along all the beam range, which deposit a non negligible dose in the entry channel. In 12C treatments the main concern is represented by long range fragments due to beam fragmentation that release their dose in the healthy tissues beyond the tumor. The FOOT experiment (FragmentatiOn Of Target) of INFN is designed to study these processes, in order to improve the nuclear fragmentation description in next generation Treatment Planning Systems and the treatment plans quality. Target (16O and 12C nuclei) fragmentation induced by –proton beams at therapeutic energies will be studied via an inverse kinematic approach, where 16O and 12C therapeutic beams impinge on graphite and hydrocarbon targets to provide the nuclear fragmentation cross section on hydrogen. Projectile fragmentation of 16O and 12C beams will be explored as well. The FOOT detector includes a magnetic spectrometer for the fragments momentum measurement, a plastic scintillator for ΔE and time of flight measurements and a crystal calorimeter to measure the fragments kinetic energy. These measurements will be combined in order to make an accurate fragment charge and isotopic identification. Keywords: Hadrontherapy, Nuclear fragmentation cross sections, Tracking detectors, Scintillating detectors

Published
2019

11. Micro pattern gas detector optical readout for directional dark matter searches

Author

F. Rosatelli, T. N. Thorpe, Stefano Loreti, C. Voena, Massimo Angelone, I. Abritta, D. Pinci, Stefano Bianco, Sandro Tomassini, Andrea Messina, F. Bellini, E. Baracchini, E. Di Marco, M. Marafini, S. Fiore, Davide Piccolo, G. Maccarone, G. Cavoto, Luisa Benussi, Mario Pillon, F. Renga, G. Mazzitelli, Cavoto, G., Abritta, I., Baracchini, E., Angelone, M., Bellini, F., Benussi, L., Bianco, S., Di Marco, E., Fiore, S., Loreti, S., Maccarone, G., Marafini, M., Mazzitelli, G., Messina, A., Piccolo, D., Pillon, M., Pinci, D., Renga, F., Rosatelli, F., Thorpe, T., Tomassini, S., and Voena, C.

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Micro-pattern gas detectors, GEM, Dark matter, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Kinetic energy, 01 natural sciences, Charged particle, Particle identification, Optics, 0103 physical sciences, Neutron source, Gas detector, 010306 general physics, business, Instrumentation, Energy (signal processing)
Abstract

The Time Projection method is ideal to track low kinetic energy charged particles, in particular for the study for Dark Matter interactions. With this technique we aim to readout large volumes with a moderate number of channels providing a complete 3D reconstruction of the tracks within the sensitive region. The total released energy and the energy density along the tracks can be both measured allowing for particle identification and to solve the head–tail ambiguity of the track. Moreover, in gas, nuclear recoils induced by a Dark Matter particle scattering can yield tracks long enough for its direction to be inferred. We describe here a prototype TPC with a GEM amplification stage. The readout is based on the detection of the light produced in the GEM with a high granularity sCMOS sensor in conjunction with a photomultiplier. The prototype was exposed to γ and neutron source and to minimum ionizing particles, obtaining very promising results in terms of detection efficiency, energy resolution and particle identification.

Published
2020

12. Measurement of charged particle yields from PMMA irradiated by a 220 MeV/u12Cbeam

Author

Fabiano Bini, S. Fiore, E. De Lucia, Michela Marafini, Pablo G. Ortega, Christoph Schuy, Luca Piersanti, Francesco Collamati, Alessio Sarti, C. La Tessa, F. Bellini, E. Iarocci, F. Ferroni, C. Voena, Marco Durante, Ilaria Mattei, M. Vanstalle, R. Faccini, Vincenzo Patera, A. Sciubba, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Piersanti, L., Bellini, F., Bini, F., Collamati, F., De Lucia, E., Durante, M., Faccini, R., Ferroni, F., Fiore, S., Iarocci, E., La Tessa, C., Marafini, M., Mattei, I., Patera, V., Ortega, P. G., Sarti, A., Schuy, C., Sciubba, A., Vanstalle, M., and Voena, C.

Subjects
medicine.medical_treatment, Physics::Medical Physics, LYSO, Dose profile, Bragg peak, 01 natural sciences, Particle detector, Lyso, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, hadrontherapy, 0103 physical sciences, medicine, Polymethyl Methacrylate, Radiology, Nuclear Medicine and imaging, Radiometry, [PHYS]Physics [physics], Physics, Particle therapy, Radiological and Ultrasound Technology, 010308 nuclear & particles physics, dose monitoring, carbon ion beam, lyso, drift chamber, Carbon, Charged particle, Atomic physics, Monte Carlo Method, Beam (structure)
Abstract

The radiation used in hadrontherapy treatments interacts with the patient body producing secondary particles, either neutral or charged, that can be used for dose and Bragg peak monitoring and to provide a fast feedback on the treatment plans. Recent results obtained from the authors on simplified setups (mono-energetic primary beams interacting with homogeneous tissue-like target) have already indicated the correlation that exists between the flux of these secondaries coming from the target (e.g. protons and photons) and the position of the primary beam Bragg peak. In this paper, the measurements of charged particle fluxes produced by the interaction of a 220 MeV/u carbon ion beam at GSI, Darmstadt, with a polymethyl methacrylate target are reported. The emission region of protons (p), deuterons (d) and tritons (t) has been characterized using a drift chamber while the particle time-of-flight, used to compute the kinetic energy spectra, was measured with a LYSO scintillator. The energy released in the LYSO crystal was used for particle identification purposes. The measurements were repeated with the setup at 60° and 90° with respect to the primary beam direction. The accuracy on the fragments emission profile reconstruction and its relationship with the Bragg peak position have been studied. Based on the acquired experimental evidence, a method to monitor the dose profile and the position of the Bragg peak inside the target is proposed. © 2014 Institute of Physics and Engineering in Medicine.

Published
2014

13. Prompt-γ production of 220 MeV/u 12C ions interacting with a PMMA target

Author

E. Solfaroli Camillocci, M. Vanstalle, C. La Tessa, C. Voena, Ilaria Mattei, R. Faccini, Vincenzo Patera, A. Sciubba, Francesco Collamati, G. Battistoni, Giacomo Traini, A. Russomando, Christoph Schuy, Antoni Rucinski, M. Toppi, Marco Durante, Luca Piersanti, E. De Lucia, Alessio Sarti, M. Rovituso, M. Marafini, Fabiano Bini, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Mattei, I., Battistoni, G., Bini, F., Collamati, F., De Lucia, E., Durante, M., Faccini, R., La Tessa, C., Marafini, M., Piersanti, L., Rovituso, M., Rucinski, A., Russomando, A., Sarti, A., Schuy, C., Sciubba, A., Camillocci, E. S., Toppi, M., Traini, G., Vanstalle, M., Voena, C., and Patera, V.

Subjects
Physics, [PHYS]Physics [physics], Range (particle radiation), Photon, Dosimetry concepts and apparatu, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Radiation, 01 natural sciences, Electromagnetic radiation, Particle detector, Charged particle, 030218 nuclear medicine & medical imaging, Ion, 03 medical and health sciences, Time of flight, Dosimetry concepts and apparatus, Instrumentation for hadron therapy, Instrumentation, Mathematical Physics, 0302 clinical medicine, 0103 physical sciences, Atomic physics
Abstract

International audience; The radiation used in particle therapy treatments produces secondary particles, either neutral or charged, when interacting with the patient body. The particles that exit from the body can be used to provide a fast feedback on the treatment plans. Here we report the measurements of prompt-gamma ray fluxes produced by the interaction of a 220 MeV/u carbon ion beam at GSI, Darmstadt, with a polymethyl methacrylate (PMMA) target. The photons were detected by means of an array of LYSO crystals, allowing for a measurement of time of flight and released energy. Different angular configurations were explored, placing the prompt-gamma detector at 60 degrees, 90 degrees, and 120 degrees with respect to the primary beam direction. The prompt-gamma energy spectra have been obtained for the different angular configurations after having taken into account the detector resolution by means of an unfolding procedure tuned with a dedicated Monte Carlo simulation. The integrated fluxes (over the full 4 pi solid angle), in the 2-10 MeV prompt-gamma ray energy range, at 60 degrees, 0 degrees and 120 degrees, are measured as Phi(gamma) (60 degrees) = (6.7 +/- 1.7) x 10(-3) sr(-1), Phi(gamma) (90 degrees) = (6.3 +/- 2.1) x 10(-3) sr(-1) and Phi(gamma)(120 degrees) = (4.4 +/- 1.1) x 10(-3) sr(-1) respectively.

Published
2015

14. A density-based clustering algorithm for the CYGNO data analysis

Author

E. Paoletti, A.F.V. Cortez, Antonio Russo, L. Passamonti, Davide Piccolo, G. Maccarrone, G. D'Imperio, Fabrizio Petrucci, R. A. Nobrega, Stefano Bianco, G. Saviano, G. Cavoto, D. Pinci, Luisa Benussi, M. Marafini, G. Dho, F. Rosatelli, E. Baracchini, E. Di Marco, I. A. Costa, Sandro Tomassini, G. Mazzitelli, Roberto Tesauro, Michele Arturo Caponero, D. Pierluigi, Francesco Iacoangeli, F. Renga, A. Orlandi, A. Messina, C. Capoccia, Baracchini, E., Benussi, L., Bianco, S., Capoccia, C., Caponero, M., Cavoto, G., Cortez, A., Costa, I. A., Marco, E. D., D'Imperio, G., Dho, G., Iacoangeli, F., Maccarrone, G., Marafini, M., Mazzitelli, G., Messina, A., Nobrega, R. A., Orlandi, A., Paoletti, E., Passamonti, L., Petrucci, F., Piccolo, D., Pierluigi, D., Pinci, D., Renga, F., Rosatelli, F., Russo, A., Saviano, G., Tesauro, R., and Tomassini, S.

Subjects
Physics - Instrumentation and Detectors, Computer science, Physics::Instrumentation and Detectors, FOS: Physical sciences, Image processing, 01 natural sciences, dark matter, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), cluster finding, Pattern recognition, 0103 physical sciences, gas time projection chamber, 010306 general physics, Instrumentation, Image resolution, Mathematical Physics, Data processing, 010308 nuclear & particles physics, business.industry, Resolution (electron density), Micropattern gaseous detectors, Instrumentation and Detectors (physics.ins-det), calibration and fitting methods, Image filtering, Data processing methods, Artificial intelligence, Noise (video), business, Density based clustering
Abstract

Time Projection Chambers (TPCs) working in combination with Gas Electron Multipliers (GEMs) produce a very sensitive detector capable of observing low energy events. This is achieved by capturing photons generated during the GEM electron multiplication process by means of a high-resolution camera. The CYGNO experiment has recently developed a TPC Triple GEM detector coupled to a low noise and high spatial resolution CMOS sensor. For the image analysis, an algorithm based on an adapted version of the well-known DBSCAN was implemented, called iDBSCAN. In this paper a description of the iDBSCAN algorithm is given, including test and validation of its parameters, and a comparison with DBSCAN itself and a widely used algorithm known as Nearest Neighbor Clustering (NNC). The results show that the adapted version of DBSCAN is capable of providing full signal detection efficiency and very good energy resolution while improving the detector background rejection.

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15. First evidence of luminescence in a He/CF 4 gas mixture induced by non-ionizing electrons

Author

E. Paoletti, G. Maccarrone, Michele Arturo Caponero, Giovanni Mazzitelli, Sandro Tomassini, Francesco Iacoangeli, G. Cavoto, D. Piccolo, A. Messina, A.F.V. Cortez, C. Capoccia, G. Saviano, A. Orlandi, G. Dho, F. Renga, A. Russo, E. Di Marco, Davide Pinci, S. Bianco, F. Rosatelli, D. Pierluigi, Luigi Benussi, I. A. Costa, Michela Marafini, L. Passamonti, E. Baracchini, Fabrizio Petrucci, G. D'Imperio, Baracchini, E., Benussi, L., Bianco, S., Capoccia, C., Caponero, M., Cavoto, G., Cortez, A., Costa, I. A., Marco, E. D., D'Imperio, G., Dho, G., Iacoangeli, F., Maccarrone, G., Marafini, M., Mazzitelli, G., Messina, A., Orlandi, A., Paoletti, E., Passamonti, L., Petrucci, F., Piccolo, D., Pierluigi, D., Pinci, D., Renga, F., Rosatelli, F., Russo, A., Saviano, G., and Tomassini, S.

Subjects
Micropattern gaseous detectors (msgc, gem, thgem, rethgem, mhsp, micropic, micromegas, ingrid, etc), Physics - Instrumentation and Detectors, Photon, axions, Physics::Instrumentation and Detectors, Mean free path, Dark matter, FOS: Physical sciences, Electron, 01 natural sciences, 7. Clean energy, dark matter, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Electric field, etc.), 0103 physical sciences, gas time projection chamber, 010306 general physics, Instrumentation, Mathematical Physics, Dark matter detectors (wimps, axions, etc.), Physics, Range (particle radiation), Atmospheric pressure, 010308 nuclear & particles physics, Instrumentation and Detectors (physics.ins-det), 3. Good health, Dark matter detectors (wimps, Atomic physics, Luminescence, Photoemission
Abstract

Optical readout of Gas Electron Multipliers (GEM) provides very interesting performance and has been proposed for different applications in particle physics. In particular, thanks to its good efficiency in the keV energy range, it is being developed for low-energy and rare event studies, such as Dark Matter searches. So far, the optical approach has only exploited the light produced during the avalanche processes in GEM channels. Further luminescence in the gas can be induced by electrons accelerated by a suitable electric field. The CYGNO collaboration studied this process with a combined use of a triple-GEM structure and a grid in an He/CF4 (60/40) gas mixture at atmospheric pressure. Results reported in this paper allow to conclude that with an electric field of about 11 kV/cm a photon production mean free path of about 1.0 cm was found.

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