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23 results on '"Vasilyev, I. I."'

1. Characterization of the optical model of the T2K 3D segmented plastic scintillator detector

Author

Abe, S., Alekseev, I., Arai, T., Arihara, T., Arimoto, S., Babu, N., Baranov, V., Bartoszek, L., Berns, L., Bhattacharjee, S., Blondel, A., Boikov, A. V., Buizza-Avanzini, M., Capó, J., Cayo, J., Chakrani, J., Chong, P. S., Chvirova, A., Danilov, M., Davis, C., Davydov, Yu. I., Dergacheva, A., Dokania, N., Douqa, D., Doyle, T. A., Drapier, O., Eguchi, A., Elias, J., Fedorova, D., Fedotov, S., Ferlewicz, D., Fuji, Y., Furui, Y., Gendotti, A., Germer, A., Giannessi, L., Giganti, C., Glagolev, V., Hu, J., Iwamoto, K., Jakkapu, M., Jesús-Valls, C., Ji, J. Y., Jung, C. K., Kakuno, H., Kasetti, S. P., Kawaue, M., Khabibullin, M., Khotjantsev, A., Kikawa, T., Kikutani, H., Kobayashi, H., Kobayashi, T., Kodama, S., Kolupanova, M., Korzenev, A., Kose, U., Kudenko, Y., Kuribayashi, S., Kutter, T., Lachat, M., Lachner, K., Last, D., Latham, N., Silverio, D. Leon, Li, B., Li, W., Li, Z., Lin, C., Lin, L. S., Lin, S., Lux, T., Mahtani, K., Maret, L., Caicedo, D. A. Martinez, Martynenko, S., Matsubara, T., Mauger, C., McGrew, C., McKean, J., Mefodiev, A., Miller, E., Mineev, O., Moreno, A. L., Muñoz, A., Nakadaira, T., Nakagiri, K., Nguyen, V., Nicola, L., Noah, E., Nosek, T., Okinaga, W., Osu, L., Paolone, V., Parsa, S., Pellegrino, R., Ramirez, M. A., Reh, M., Ricco, C., Rubbia, A., Sakashita, K., Sallin, N., Sanchez, F., Schefke, T., Schloesser, C. M., Sgalaberna, D., Shvartsman, A., Skrobova, N., Speers, A. J., Suslov, I. A., Suvorov, S., Svirida, D., Tairafune, S., Tanigawa, H., Teklu, A., Tereshchenko, V. V., Tzanov, M., Vasilyev, I. I., Wallace, H. T., Whitney, N., Wood, K., Xu, Y. -h., Yang, G., Yershov, N., Yokoyama, M., Yoshimoto, Y., Zhao, X., Zheng, H., Zhu, T., Zilberman, P., and Zimmerman, E. D.

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

The magnetised near detector (ND280) of the T2K long-baseline neutrino oscillation experiment has been recently upgraded aiming to satisfy the requirement of reducing the systematic uncertainty from measuring the neutrinonucleus interaction cross section, which is the largest systematic uncertainty in the search for leptonic charge-parity symmetry violation. A key component of the upgrade is SuperFGD, a 3D segmented plastic scintillator detector made of approximately 2,000,000 optically-isolated 1 cm3 cubes. It will provide a 3D image of GeV neutrino interactions by combining tracking and stopping power measurements of final state particles with sub-nanosecond time resolution. The performance of SuperFGD is characterized by the precision of its response to charged particles as well as the systematic effects that might affect the physics measurements. Hence, a detailed Geant4 based optical simulation of the SuperFGD building block, i.e. a plastic scintillating cube read out by three wavelength shifting fibers, has been developed and validated with the different datasets collected in various beam tests. In this manuscript the description of the optical model as well as the comparison with data are reported., Comment: 31 pages, 15 figures

Published
2024

2. SuperFGD prototype time resolution studies

Author

Alekseev, I., Arihara, T., Baranov, V., Bartoszek, L., Bernardi, L., Blondel, A., Boikov, A. V., Buizza-Avanzini, M., Cadoux, F., Capó, J., Cayo, J., Chakrani, J., Chong, P. S., Chvirova, A., Danilov, M., Davydov, Yu. I., Dergacheva, A., Dokania, N., Douqa, D., Drapier, O., Eguchi, A., Favre, Y., Fedorova, D., Fedotov, S., Fujii, Y., Gastaldi, F., Gendotti, A., Glagolev, V., Guillaumat, R., Iwamoto, K., Jakkapu, M., Jesús-Valls, C., Jung, C. K., Kakuno, H., Kasetti, S. P., Khabibullin, M., Khotjantsev, A., Kikutani, H., Kobayashi, T., Kodama, S., Korzenev, A., Kose, U., Kudenko, Y., Kutter, T., Last, D., Li, B., Li, Z., Lin, L. S., Lin, S., Louzir, M., Lux, T., Maret, L., Martynenko, S., Matsubara, T., Mauger, C., McGrew, C., Mefodiev, A., Mineev, O., Nakadaira, T., Nakagiri, K., Nanni, J., Nicola, L., Noah, E., Paolone, V., Parsa, S., Pellegrino, R., Ramirez, M. A., Reh, M., Ricco, C., Rubbia, A., Sakashita, K., Sanchez, F., Sgalaberna, D., Shvartsman, A., Skrobova, N., Suslov, I. A., Suvorov, S., Svirida, D., Teklu, A., Tereshchenko, V. V., Tzanov, M., Vasilyev, I. I., Wood, K., Yang, G., Yershov, N., Yokoyama, M., Yoshimoto, Y., Zhao, X., Zilberman, P., and Zimmerman, E. D.

Subjects
Physics - Instrumentation and Detectors
Abstract

The SuperFGD will be a part of the ND280 near detector of the T2K and Hyper Kamiokande projects, that will help to reduce systematic uncertainties related with neutrino flux and cross-section modeling. The upgraded ND280 will be able to perform a full exclusive reconstruction of the final state from neutrino-nucleus interactions, including measurements of low momentum protons, pions and, for the first time, event-by event measurements of neutron kinematics. The time resolution defines the neutron energy resolution. We present the results of time resolution measurements made with the SuperFGD prototype that consists of 9216 plastic scintillator cubes (cube size is 1 cm$^3$) readout with 1728 wavelength-shifting fibers going along three orthogonal directions. We use data from the muon beam exposure at CERN. The time resolution of 0.97 ns was obtained for one readout channel after implementing the time calibration with a correction for the time-walk effect. The time resolution improves with energy deposited in a scintillator cube. Averaging two readout channels for one scintillator cube improves the time resolution to 0.68 ns which means that signals in different channels are not synchronous. Therefore the contribution from the time recording step of 2.5 ns is averaged as well. Averaging time values from N channels improves the time resolution by $\sim 1/\sqrt{N}$. Therefore a very good time resolution should be achievable for neutrons since neutron recoils hit typically several scintillator cubes and in addition produce larger amplitudes than muons. Measurements performed with a laser and a wide-bandwidth oscilloscope demonstrated that the time resolution obtained with the muon beam is not far from its expected limit. The intrinsic time resolution of one channel is 0.67 ns for signals of 56 photo-electron typical for minimum ionizing particles., Comment: 12 pages, 9 figures. Revised text, results unchanged

Published
2022
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3. Mu2e-II: Muon to electron conversion with PIP-II

Author

Byrum, K., Corrodi, S., Oksuzian, Y., Winter, P., Xia, L., Edmonds, A. W. J., Miller, J. P., Mott, J., Marciano, W. J., Szafron, R., Bonventre, R., Brown, D. N., Kolomensky, Yu. G., Ning, O., Singh, V., Prebys, E., Borrel, L., Echenard, B., Hitlin, D. G., Hu, C., Lin, D. X., Middleton, S., Porter, F. C., Zhang, L., Zhu, R. -Y., Ambrose, D., Badgley, K., Bernstein, R. H., Boi, S., Casey, B. C. K., Culbertson, R., Gaponenko, A., Glass, H. D., Glenzinski, D., Goodenough, L., Hocker, A., Kargiantoulakis, M., Kashikhin, V., Kiburg, B., Kutschke, R. K., Murat, P. A., Neuffer, D., Pronskikh, V. S., Pushka, D., Rakness, G., Strauss, T., Yucel, M., Bloise, C., Diociaiuti, E., Giovannella, S., Happacher, F., Miscetti, S., Sarra, I., Martini, M., Ferrari, A., Müller, S. E., Rachamin, R., Barlas-Yucel, E., Artikov, A., Atanov, N., Davydov, Yu. I., Glagolev, V., Vasilyev, I. I., Uesaka, Y., Denisov, S. P., Evdokimov, V., Kozelov, A. V., Popov, A. V., Vasilyev, I. A., Tassielli, G., Teubner, T., Chislett, R. T., Hesketh, G. G., Lancaster, M., Campbell, M., Ciampa, K., Heller, K., Messerly, B., Cummings, M. A. C., Calibbi, L., Blazey, G. C., Syphers, M. J., Zutshi, V., Kampa, C., MacKenzie, M., Di Falco, S., Donati, S., Gioiosa, A., Giusti, V., Morescalchi, L., Pasciuto, D., Pedreschi, E., Spinella, F., Hedges, M. T., Jones, M., You, Z. Y., Zanetti, A. M., Valetov, E. V., Dukes, E. C., Ehrlich, R., Group, R. C., Heeck, J., Hung, P. Q., Demers, S. M., Pezzullo, G., Lynch, K. R., and Popp, J. L.

Subjects
High Energy Physics - Experiment
Abstract

An observation of Charged Lepton Flavor Violation (CLFV) would be unambiguous evidence for physics beyond the Standard Model. The Mu2e and COMET experiments, under construction, are designed to push the sensitivity to CLFV in the mu to e conversion process to unprecedented levels. Whether conversion is observed or not, there is a strong case to be made for further improving sensitivity, or for examining the process on additional target materials. Mu2e-II is a proposed upgrade to Mu2e, with at least an additional order of magnitude in sensitivity to the conversion rate over Mu2e. The approach and challenges for this proposal are summarized. Mu2e-II may be regarded as the next logical step in a continued high-intensity muon program at FNAL., Comment: Contribution to Snowmass 2021 46 pages 43 figures 7 tables

Published
2022

4. Light outputs of yttrium doped BaF$_2$ crystals irradiated with neutrons

Author

Baranov, V., Davydov, Yu. I., and Vasilyev, I. I.

Subjects
Physics - Instrumentation and Detectors
Abstract

The fast luminescence component of barium fluoride (BaF$_2$) crystals with a subnanosecond decay time can find wide application in particle physics and nuclear physics. However, the slow luminescence component with the 630~ns decay time could cause pile-up signals at a high rate environment. Doping of BaF$_2$ crystals with rare earth elements suppresses the slow emission component, but at the same time the radiation hardness of the crystals deteriorates. This work presents the results of studying crystal samples, both pure BaF$_2$ and those doped with yttrium in a proportion of 1at.\%Y, 3at.\%Y and 5at.\%Y, irradiated with a fast neutron fluence of about 2.3$\times$10$^{14}$~n/cm$^2$. Their light output and decay kinetics were measured before and after irradiation. It is found that the light output loss of a pure BaF$_2$ crystal after irradiation is about 7\%, and the light output loss of yttrium doped samples after irradiation is about two times higher. The measurement results demonstrate that after irradiation the fast component of each sample has a relative light output loss 2-3\% larger than the slow one.

Published
2021
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5. Optical properties of YAG:Ce and GGG:Ce scintillation crystals irradiated with a high fluence proton beam

Author

Baranov, V., Davydov, Yu. I., Mkrtchian, M., and Vasilyev, I. I.

Subjects
Physics - Instrumentation and Detectors
Abstract

In this paper, we report on the study of the optical properties of YAG:Ce and GGG:Ce garnet crystals after irradiation in a 660~MeV proton beam with a fluence up to 8.9$\times$10$^{14}$ protons/cm$^2$. We found that the transparency of both crystals fell by no more than 7\% in the region of their own luminescence. The light yield of a YAG:Ce sample, measured one year after irradiation, dropped by about 35\%.

Published
2020
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6. Mu2e calorimeter readout system

Author

Atanov, N., Baranov, V., Baldini, L., Budagov, J., Caiulo, D., Cei, F., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., D'Errico, F., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Faetti, S., Giovannella, S., Giudici, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Lazzeri, L., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Nicolò, D., Pedreschi, E., Pezzullo, G., Polacco, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Sozzi, M., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

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

The Mu2e electromagnetic calorimeter is made of two disks of un-doped parallelepiped CsI crystals readout by SiPM. There are 674 crystals in one disk and each crystal is readout by an array of two SiPM. The readout electronics is composed of two types of modules: 1) the front-end module hosts the shaping amplifier and the high voltage linear regulator; since one front-end module is interfaced to one SiPM, a total of 2696 modules are needed for the entire calorimeter; 2) a waveform digitizer provides a further level of amplification and digitizes the SiPM signal at the sampling frequency of $200\ \text{M}\text{Hz}$ with 12-bits ADC resolution; since one board digitizes the data received from 20 SiPMs, a total of 136 boards are needed. The readout system operational conditions are hostile: ionization dose of $20\ \text{krads}$, neutron flux of $10^{12}\ \mathrm{n}(1\ \text{MeVeq})/\text{cm}^2$, magnetic field of $1\ \text{T}$ and in vacuum level of $10^{-4}\ \text{Torr}$. A description of the readout system and qualification tests is reported.

Published
2019
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7. The Mu2e calorimeter: quality assurance of production crystals and SiPMs

Author

Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

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

The Mu2e calorimeter is composed of two disks each containing 1348 pure CsI crystals, each crystal read out by two arrays of 6x6 mm2 monolithic SiPMs. The experimental requirements have been translated in a series of technical specifications for both crystals and SiPMs. Quality assurance tests, on first crystal and then SiPM production batches, confirm the performances of preproduction samples previously assembled in a calorimeter prototype and tested with an electron beam. The production yield is sufficient to allow the construction of a calorimeter of the required quality in the expected times., Comment: 2 pages, 2 figures, 14th meeting on Advanced Detectors

Published
2018
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8. Suppression of the slow component of BaF$_{2}$ crystal luminescence with a thin multilayer filter

Author

Artikov, A. M., Baranov, V., Budagov, J. A., Chivanov, A. N., Davydov, Yuri, Eliseev, E. N., Garibin, E. A., Glagolev, V. V., Mihailov, A. V., Rodnyi, P. A., Terechschenko, V. V., and Vasilyev, I. I.

Subjects
Physics - Instrumentation and Detectors
Abstract

The fast component of the barium fluoride (BaF$_{2}$) crystal luminescence with the emission peak at 220 nm allows those crystals to be employed in fast calorimeters operating in harsh radiation environment. However, the slow component with the emission peak at 330 nm and about 85\% of the total emission light could create big problems when working at a high radiation rate. In this work we report results of tests of multilayer filters that can suppress luminescence in the range from 250 nm to 400 nm, which covers most of the BaF$_{2}$ slow component luminescence. The filters are made by spraying layers of rare earth oxides on a quartz glass substrate. Filters typically comprise 200-220 layers. A few filters were prepared by spraying thin layers on quartz glass. The filters have a peak transmittance of about 70-80\% in the range of 200-250 nm. Measurements of the light output of the BaF$_{2}$ crystal with and without a filter between the crystal readout end and the PMT demonstrate substancial suppression of the slow component. To our knowledge, this kind of filters are produced and tested for the first time.

Published
2018
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9. Towards the construction of the Mu2e electromagnetic calorimeter at Fermilab

Author

Atanov, N., primary, Baranov, V., additional, Borrel, L., additional, Bloise, C., additional, Budagov, J., additional, Ceravolo, S., additional, Cervelli, F., additional, Colao, F., additional, Cordelli, M., additional, Corradi, G., additional, Davydov, Y. I., additional, Di Falco, S., additional, Diociaiuti, E., additional, Donati, S., additional, Donghia, R., additional, Echenard, B., additional, Ferrari, C., additional, Gioiosa, A., additional, Giovannella, S., additional, Giusti, V., additional, Glagolev, V., additional, Grancagnolo, F., additional, Hampai, D., additional, Happacher, F., additional, Hitlin, D., additional, Lin, D., additional, Marini, A., additional, Martini, M., additional, Middleton, S., additional, Miscetti, S., additional, Morescalchi, L., additional, Pasciuto, D., additional, Pedreschi, E., additional, Porter, F., additional, Raffaelli, F., additional, Saputi, A., additional, Sarra, I., additional, Spinella, F., additional, Taffara, A., additional, Tassielli, G. F., additional, Tereshchenko, V., additional, Usubov, Z., additional, Vasilyev, I. I., additional, Zanetti, A., additional, and Zhu, R. Y., additional

Published
2022
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10. Light outputs of yttrium doped BaF_2 crystals irradiated with neutrons

Author

Baranov, V., Davydov, Yu. I., and Vasilyev, I. I.

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Instrumentation, Mathematical Physics
Abstract

The fast luminescence component of barium fluoride (BaF_2) crystals with a subnanosecond decay time can find wide application in particle physics and nuclear physics. However, the slow luminescence component with the 630 ns decay time could cause pile-up signals at a high rate environment. Doping of BaF2 crystals with rare earth elements suppresses the slow emission component, but at the same time the radiation hardness of the crystals deteriorates. This work presents the results of studying crystal samples, both pure BaF2 and those doped with yttrium in a proportion of 1 at.%Y, 3 at.%Y and 5 at.%Y, irradiated with a fast neutron fluence of about 2.3×1014 n/cm2. Their light output and decay kinetics were measured before and after irradiation. It is found that the light output loss of a pure BaF2 crystal after irradiation is about 7%, and the light output loss of yttrium doped samples after irradiation is about two times higher. The measurement results demonstrate that after irradiation the fast component of each sample has a relative light output loss 2–3% larger than the slow one.

Published
2022

12. The Mu2e e.m. Calorimeter: Crystals and SiPMs Production Status

Author

Atanov, N., primary, Baranov, V., additional, Budagov, J., additional, Caiulo, D., additional, Cervelli, F., additional, Colao, F., additional, Cordelli, M., additional, Corradi, M., additional, Davydov, Yu. I., additional, Falco, S. Di, additional, Diociaiuti, E., additional, Donati, S., additional, Donghia, R., additional, Echenard, B., additional, Giovannella, S., additional, Glagolev, V., additional, Grancagnolo, F., additional, Happacher, F., additional, Hitlin, D., additional, Martini, M., additional, Miscetti, S., additional, Miyashita, T., additional, Morescalchi, L., additional, Murat, P., additional, Pedreschi, E., additional, Pezzullo, G., additional, Porter, F., additional, Raffaelli, F., additional, Ricci, M., additional, Saputi, A., additional, Sarra, I., additional, Spinella, F., additional, Tassielli, G., additional, Tereshchenko, V., additional, Usubov, Z., additional, Vasilyev, I. I., additional, and Zhu, R. Y., additional

Published
2020
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13. Mu2e-II: Muon to electron conversion with PIP-II

Author

Byrum, K., Corrodi, S., Oksuzian, Y., Winter, P., Xia, L., Edmonds, A. W. J., Miller, J. P., Mott, J., Marciano, W. J., Szafron, R., Bonventre, R., Brown, D. N., Kolomensky, Yu G., Ning, O., Singh, V., Prebys, E., Léo Borrel, Echenard, B., Hitlin, D. G., Hu, C., Lin, D. X., Middleton, S., Porter, F. C., Zhang, L., Zhu, R. -Y, Ambrose, D., Badgley, K., Bernstein, R. H., Boi, S., Casey, B. C. K., Culbertson, R., Gaponenko, A., Glass, H. D., Glenzinski, D., Goodenough, L., Hocker, A., Kargiantoulakis, M., Kashikhin, V., Kiburg, B., Kutschke, R. K., Murat, P. A., Neuffer, D., Pronskikh, V. S., Pushka, D., Rakness, G., Strauss, T., Yucel, M., Bloise, C., Diociaiuti, E., Giovannella, S., Happacher, F., Miscetti, S., Sarra, I., Martini, M., Ferrari, A., Müller, S. E., Rachamin, R., Barlas-Yucel, E., Artikov, A., Atanov, N., Davydov, Yu I., Glagolev, V., Vasilyev, I. I., Uesaka, Y., Denisov, S. P., Evdokimov, V., Kozelov, A. V., Popov, A. V., Vasilyev, I. A., Tassielli, G., Teubner, T., Chislett, R. T., Hesketh, G. G., Lancaster, M., Campbell, M., Ciampa, K., Heller, K., Messerly, B., Cummings, M. A. C., Calibbi, L., Blazey, G. C., Syphers, M. J., Zutshi, V., Kampa, C., Mackenzie, M., Di Falco, S., Donati, S., Gioiosa, A., Giusti, V., Morescalchi, L., Pasciuto, D., Pedreschi, E., Spinella, F., Hedges, M. T., Jones, M., You, Z. Y., Zanetti, A. M., Valetov, E. V., Dukes, E. C., Ehrlich, R., Group, R. C., Heeck, J., Hung, P. Q., Demers, S. M., Pezzullo, G., Lynch, K. R., and Popp, J. L.

14. Development, construction and qualification tests of the mechanical structures of the electromagnetic calorimeter of the Mu2e experiment at Fermilab

Author

Atanov, N., Baranov, V., Borrel, L., Bloise, C., Budagov, J., Ceravolo, S., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Y. I., Di Falco, S., Eleonora Diociaiuti, Donati, S., Echenard, B., Ferrari, C., Gioiosa, A., Giovannella, S., Giusti, V., Glagolev, V., Grancagnolo, F., Hampai, D., Happacher, F., Hitlin, D., Lin, D., Martini, M., Middleton, S., Miscetti, S., Morescalchi, L., Paesani, D., Pasciuto, D., Pedreschi, E., Porter, F., Raffaelli, F., Saputi, A., Sarra, I., Spinella, F., Taffara, A., Tassielli, G. F., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zanetti, A., and Zhu, R. Y.

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15. Final design and current status of the Mu2e crystal calorimeter

Author

Atanov, N., Baranov, V., Budagov, J., Davydov, Y. I., Glagolev, V., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Cervelli, F., Di Falco, S., Donati, S., Ferrari, C., Gioiosa, A., Giusti, V., Marini, A., Morescalchi, L., Pasciuto, D., Pedreschi, E., Raffaelli, F., Spinella, F., Taffara, A., Bloise, C., Colao, F., Cordelli, M., Corradi, G., Eleonora Diociaiuti, Donghia, R., Giovannella, S., Hampai, D., Happacher, F., Martini, M., Miscetti, S., Paesani, D., Saputi, A., Sarra, I., Borrell, L., Echenard, B., Hitlin, D., Lin, D., Middleton, S., Miyashita, T., Oyang, J., Porter, F., Zhu, R. Y., Murat, P., Pezzullo, G., Grancagnolo, F., Tassielli, G. F., and Zanetti, A.

Subjects
Materials science, Calorimeter (particle physics), business.industry, Negative muons, Crystals, High energy physics, Fermi national accelerator laboratories, Calorimeters, Particle identifications, Crystal, Mu2e, Optoelectronics, Current (fluid), business

16. The Mu2e e.m. Calorimeter: Crystals and SiPMs Production Status

Author

S. Donati, M. Corradi, M. Ricci, T. S. Miyashita, M. Cordelli, G. Tassielli, S. Miscetti, I. I. Vasilyev, Gianantonio Pezzullo, F. Raffaelli, Luca Morescalchi, F. Happacher, E. Pedreschi, V. Glagolev, D. Caiulo, D. G. Hitlin, Z. Usubov, F. Grancagnolo, S. Giovannella, Yu.I. Davydov, F. Cervelli, F. Colao, B. Echenard, A. Saputi, E. Diociaiuti, S. Di Falco, J. Budagov, Ren-Yuan Zhu, N. Atanov, P. Murat, F. C. Porter, V. A. Baranov, F. Spinella, M. Martini, I. Sarra, R. Donghia, V. Tereshchenko, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, M., Davydov, Y. I., Falco, S. D., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

Subjects
Physics, Nuclear and High Energy Physics, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Calorimetry, 01 natural sciences, Particle identification, Nuclear physics, Mu2e, Silicon photomultiplier, Nuclear Energy and Engineering, 0103 physical sciences, pure CsI crystals, silicon photomultipliers (SiPMs), High Energy Physics::Experiment, Fermilab, pure CsI crystal, Electrical and Electronic Engineering, Lepton
Abstract

The Mu2e experiment at Fermilab will search for the charged lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus [1] , [2] . The Mu2e detector is comprised of a tracker, an electromagnetic calorimeter, and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities, a fast and online trigger filter while aiding the track reconstruction capabilities. The calorimeter requirements are to provide a large acceptance for 100-MeV electrons and reach: 1) a time resolution better than 0.5 ns at 100 MeV; 2) an energy resolution O(10%) at 100 MeV; and 3) a position resolution of about 1 cm. The calorimeter consists of two disks, each one made of 674 pure CsI crystals readout by two large-area $2 \times 3$ array of UV-extended silicon photomultipliers (Mu2e SiPMs) of $6\,\,\times6$ mm2 dimensions. A large-scale prototype has been constructed with 51 preproduction crystals readout by 102 Mu2e SiPMs. It has been tested at the beam test facility in Frascati, demonstrating satisfying results compared to the Mu2e requirements. At the moment of writing, the crystals production phase is halfway through the work, while the SiPM production has been completed. An overview of the characterization tests is also reported, together with a description of the final calorimeter design.

Published
2020

17. The Mu2e calorimeter: Quality assurance of production crystals and SiPMs

Author

M. Martini, Ren-Yuan Zhu, G. Tassielli, Z. Usubov, E. Pedreschi, G. Corradi, D. G. Hitlin, D. Caiulo, V. Glagolev, F. Spinella, F. Cervelli, I. Sarra, F. Happacher, S. Miscetti, M. Cordelli, R. Donghia, V. Tereshchenko, F. Grancagnolo, N. Atanov, E. Diociaiuti, S. Donati, Gianantonio Pezzullo, I. I. Vasilyev, S. Giovannella, Yu.I. Davydov, F. Colao, B. Echenard, F. Raffaelli, A. Saputi, S. Di Falco, J. Budagov, Luca Morescalchi, M. Ricci, T. S. Miyashita, P. Murat, F. C. Porter, V. A. Baranov, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, 030218 nuclear medicine & medical imaging, Crystal, High Energy Physics - Experiment (hep-ex), 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, 0103 physical sciences, Mu2e, Instrumentation, Physics, Mu2e, electromagnetic calorimeter, crystal calorimeter, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Instrumentation and Detectors (physics.ins-det), Technical specifications, 3. Good health, Cathode ray, Optoelectronics, business, Quality assurance
Abstract

The Mu2e calorimeter is composed of two disks each containing 1348 pure CsI crystals, each crystal read out by two arrays of 6x6 mm2 monolithic SiPMs. The experimental requirements have been translated in a series of technical specifications for both crystals and SiPMs. Quality assurance tests, on first crystal and then SiPM production batches, confirm the performances of preproduction samples previously assembled in a calorimeter prototype and tested with an electron beam. The production yield is sufficient to allow the construction of a calorimeter of the required quality in the expected times., Comment: 2 pages, 2 figures, 14th meeting on Advanced Detectors

Published
2019
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18. Design and test of the Mu2e undoped CsI + SiPM crystal calorimeter

Author

G. Tassielli, F. Grancagnolo, M. Cordelli, S. Giovannella, Ren-Yuan Zhu, Yu.I. Davydov, F. Colao, D. Caiulo, B. Echenard, I. I. Vasilyev, R. Donghia, M. Ricci, V. Tereshchenko, J. Budagov, T. S. Miyashita, S. Donati, V. Glagolev, F. Happacher, Luca Morescalchi, M. Corradi, S. Miscetti, E. Diociaiuti, Gianantonio Pezzullo, F. Spinella, E. Pedreschi, D. G. Hitlin, F. Cervelli, F. Raffaelli, N. Atanov, A. Saputi, S. Di Falco, M. Martini, Z. Usubov, P. Murat, F. C. Porter, V. A. Baranov, I. Sarra, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

Subjects
Physics, Nuclear and High Energy Physics, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, SiPMs, Calorimetry, 01 natural sciences, Particle identification, Silicon photomultiplier, Optics, 0103 physical sciences, Mu2e, Cathode ray, High Energy Physics::Experiment, Test beam, Fermilab, Pure CsI crystals, 010306 general physics, business, Instrumentation
Abstract

The Mu2e experiment at Fermilab will search for the charged-lepton flavour violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The calorimeter plays an important role in providing a fast trigger filter, excellent particle identification and a seeding for track reconstruction. Its requirements are to provide an energy (timing) resolution better than 10% (0.5 ns) and a position resolution below 1 cm, for 100 MeV electrons. The calorimeter consists of two disks, each one made of 674 un-doped CsI crystals readout by two large area arrays of 2 × 3 UV-extended SiPMs of 6 × 6 mm^2 dimensions. A large scale prototype (Module-0) has been constructed and tested with an electron beam in the energy range between 60 and 120 MeV at the BTF of Frascati National Laboratories. Results demonstrated that this calorimeter satisfies the Mu2e requirements.

Published
2019
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19. Mu2e calorimeter readout system

Author

E. Pedreschi, J. Budagov, D. G. Hitlin, G. Polacco, F. Happacher, S. Miscetti, N. Atanov, S. Donati, M. Sozzi, M. Cordelli, Luca Baldini, I. I. Vasilyev, A. Saputi, Gianantonio Pezzullo, M. Ricci, Luigi Lazzeri, Ren-Yuan Zhu, S. Faetti, S. Giudici, S. Di Falco, Z. Usubov, T. S. Miyashita, I. Sarra, Luca Morescalchi, F. Grancagnolo, F. Colao, P. Murat, F. Cervelli, R. Donghia, B. Echenard, F. Spinella, G. Corradi, F. C. Porter, Fabrizio Cei, V. Tereshchenko, Donato Nicolo, F. Raffaelli, V. A. Baranov, D. Caiulo, S. Giovannella, Yu.I. Davydov, V. Glagolev, M. Martini, G. Tassielli, Francesco D'Errico, E. Diociaiuti, Atanov, N., Baranov, V., Baldini, L., Budagov, J., Caiulo, D., Cei, F., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., D'Errico, F., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Faetti, S., Giovannella, S., Giudici, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D. G., Lazzeri, L., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Nicolò, D., Pedreschi, E., Pezzullo, G., Polacco, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Sozzi, M., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Mu2e calorimeter, 01 natural sciences, Signal, High Energy Physics - Experiment, 030218 nuclear medicine & medical imaging, High Energy Physics - Experiment (hep-ex), 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, 0103 physical sciences, Mu2e, Waveform, Instrumentation, Digitizer, Physics, Front-end electronics, Radiation tolerance, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Amplifier, Linear regulator, High voltage, Instrumentation and Detectors (physics.ins-det), Optoelectronics, business
Abstract

The Mu2e electromagnetic calorimeter is made of two disks of un-doped parallelepiped CsI crystals readout by SiPM. There are 674 crystals in one disk and each crystal is readout by an array of two SiPM. The readout electronics is composed of two types of modules: 1) the front-end module hosts the shaping amplifier and the high voltage linear regulator; since one front-end module is interfaced to one SiPM, a total of 2696 modules are needed for the entire calorimeter; 2) a waveform digitizer provides a further level of amplification and digitizes the SiPM signal at the sampling frequency of $200\ \text{M}\text{Hz}$ with 12-bits ADC resolution; since one board digitizes the data received from 20 SiPMs, a total of 136 boards are needed. The readout system operational conditions are hostile: ionization dose of $20\ \text{krads}$, neutron flux of $10^{12}\ \mathrm{n}(1\ \text{MeVeq})/\text{cm}^2$, magnetic field of $1\ \text{T}$ and in vacuum level of $10^{-4}\ \text{Torr}$. A description of the readout system and qualification tests is reported.

Published
2019
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20. Construction status of the Mu2e crystal calorimeter

Author

R. Donghia, V. Tereshchenko, D. Pasciuto, J. Budagov, M. Cordelli, S. Donati, F. Grancagnolo, I. Sarra, Claudio Ferrari, F. Spinella, Dariush Hampai, C. Bloise, E. Diociaiuti, Gianantonio Pezzullo, N. Atanov, A. Saputi, T. S. Miyashita, S. Miscetti, F. Cervelli, G. Tassielli, I. I. Vasilyev, Anna Zanetti, Z. Usubov, Ren-Yuan Zhu, E. Pedreschi, S. Di Falco, D. G. Hitlin, V. V. Glagolev, Luca Morescalchi, M. Corradi, P. Murat, M. Martini, F. C. Porter, V. A. Baranov, F. Colao, B. Echenard, S. Giovannella, Yu.I. Davydov, F. Happacher, F. Raffaelli, A. Marini, Atanov, N., Baranov, V., Bloise, C., Budagov, J., Cervelli, F., Colao, F., Cordelli, M., Corradi, M., Davydov, Y. I., Falco, S. D., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Ferrari, C., Giovannella, S., Glagolev, V., Grancagnolo, F., Hampai, D., Happacher, F., Hitlin, D., Marini, A., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pasciuto, D., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Saputi, A., Sarra, I., Spinella, F., Tassielli, G. F., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zanetti, A., and Zhu, R. Y.

Subjects
Materials science, Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Cosmic ray, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, 0103 physical sciences, Mu2e, Cathode ray, High Energy Physics::Experiment, Fermilab, business, Instrumentation, Mathematical Physics
Abstract

The Mu2e experiment at Fermilab will search for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities and a fast online trigger filter, while aiding the track reconstruction capabilities. Calorimeter requirements are to provide a large acceptance for 0∼10 MeV electrons and reach: I) a time resolution better than 0.5 ns; ii) an energy resolution better than 10%; and iii) a position resolution of 1 cm. The calorimeter consists of two disks, each one made of 674 pure CsI crystals. Each crystal is readout by two large area 2×3 arrays of UV-extended SiPMs of 6×6 mm2 dimensions. A large scale prototype (Module-0) has been tested at an electron beam. We report here the tests done to finalize the calorimeter design, the results obtained with Module-0 and the status of production. At this time, the performance characteristics of 85% of the crystals and all of the SiPMs have been measured. The calorimeter engineering drawings have been completed and the large mechanical components are under fabrication. Analog and digital electronics have been prototyped and tested with irradiation dose. Their serial production is being organized. The calorimeter assembly phase is planned for mid-2020.

Published
2020

21. Design and status of the Mu2e crystal calorimeter

Author

Claudio Ferrari, G. Tassielli, S. Ceravolo, S. Donati, Gianantonio Pezzullo, Dariush Hampai, C. Bloise, Anna Zanetti, F. Spinella, R. Donghia, G. Corradi, V. Tereshchenko, S. Giovannella, Yu.I. Davydov, M. Cordelli, D. Pasciuto, F. Cervelli, I. Sarra, F. Colao, N. Atanov, F. Grancagnolo, E. Pedreschi, B. Echenard, S. Miscetti, P. Murat, D. G. Hitlin, F. C. Porter, V. A. Baranov, T. S. Miyashita, F. Happacher, M. Martini, F. Raffaelli, Ren-Yuan Zhu, V. Glagolev, I. I. Vasilyev, Luca Morescalchi, E. Diociaiuti, A. Saputi, S. Di Falco, J. Budagov, Z. Usubov, Atanov, N., Baranov, V., Bloise, C., Budagov, J., Cervelli, F., Ceravolo, S., Colao, F., Cordelli, M., Corradi, G., Davydov, Y. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Ferrari, C., Giovannella, S., Glagolev, V., Grancagnolo, F., Hampai, D., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pasciuto, D., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zanetti, A., and Zhu, R. Y.

Subjects
Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Orders of magnitude (temperature), SiPMs, Calorimetry, 7. Clean energy, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, Mu2e, Pure CsI crystals, 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, Optics, 0103 physical sciences, Fermilab, Instrumentation, Pure CsI crystal, Physics, Muon, Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Detector, High Energy Physics::Experiment, business
Abstract

The Mu2e experiment at Fermilab searches for the coherent neutrino-less muon to electron conversion in the Coulomb field of an aluminum nucleus. This charged-lepton flavor violating process is characterized by a distinctive signature of a mono-energetic electron ( ∼ 105 MeV/c) and its observation will be a clear signature of new physics beyond the Standard Model. The Mu2e goal is to improve by four orders of magnitude the search sensitivity with respect to the previous experiments. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter plays an important role in providing excellent particle identification capabilities, a fast online trigger filter while aiding the track reconstruction capabilities. It consists of 1348 pure CsI crystals divided in two annular disks, each one readout by two large area Silicon Photomultipliers. A large scale prototype has been tested with an electron beam , demonstrating to largely satisfy the Mu2e requirements. At the moment of writing, the crystals and SiPMs production phase is halfway through the completion. An overview of the characterization tests is reported, together with a description of the final mechanical and electronical design.

Published
2020

22. Quality Assurance on Undoped CsI Crystals for the Mu2e Experiment

Author

N. Atanov, V. Baranov, J. Budagov, D. Caiulo, F. Cervelli, F. Colao, M. Cordelli, G. Corradi, Yu. I. Davydov, S. Di Falco, E. Diociaiuti, S. Donati, R. Donghia, B. Echenard, S. Giovannella, V. Glagolev, F. Grancagnolo, F. Happacher, D. Hitlin, C. Hu, M. Martini, S. Miscetti, T. Miyashita, L. Morescalchi, P. Murat, E. Pedreschi, G. Pezzullo, F. Porter, F. Raffaelli, M. Ricci, A. Saputi, I. Sarra, F. Spinella, G. Tassielli, V. Tereshchenko, Z. Usubov, I. I. Vasilyev, L. Zhang, R. Y. Zhu, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Hu, C., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., Zhang, L., and Zhu, R. Y.

Subjects
Nuclear and High Energy Physics, Materials science, Physics - Instrumentation and Detectors, Silicon, Physics::Instrumentation and Detectors, Photoconductivity, Crystals, Correlation, Photoconductivity, Energy resolution, Silicon carbide, Current measurement, Radiation effects, chemistry.chemical_element, FOS: Physical sciences, Radiation effects, Silicon carbide, 01 natural sciences, Crystals, 030218 nuclear medicine & medical imaging, High Energy Physics - Experiment, Crystal, 03 medical and health sciences, High Energy Physics - Experiment (hep-ex), 0302 clinical medicine, Ionization, Condensed Matter::Superconductivity, 0103 physical sciences, Mu2e, Neutron, Electrical and Electronic Engineering, Energy resolution, Radiation hardening, Scintillation, 010308 nuclear & particles physics, business.industry, Instrumentation and Detectors (physics.ins-det), Current measurement, 3. Good health, Calorimeter, Correlation, Nuclear Energy and Engineering, chemistry, Optoelectronics, business
Abstract

The Mu2e experiment is constructing a calorimeter consisting of 1,348 undoped CsI crystals in two disks. Each crystal has a dimension of 34 x 34 x 200 mm, and is readout by a large area silicon PMT array. A series of technical specifications was defined according to physics requirements. Preproduction CsI crystals were procured from three firms: Amcrys, Saint-Gobain and Shanghai Institute of Ceramics. We report the quality assurance on crystal's scintillation properties and their radiation hardness against ionization dose and neutrons. With a fast decay time of 30 ns and a light output of more than 100 p.e./MeV measured with a bi-alkali PMT, undoped CsI crystals provide a cost-effective solution for the Mu2e experiment., Comment: 7 pages, 16 figures, published in IEEE TNS NS (2018)

Published
2018
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23. Electron beam test of the large area Mu2e calorimeter prototype

Author

R. Donghia, V. Tereshchenko, M. Corradi, I. I. Vasilyev, A. Saputi, M. Cordelli, P. Murat, S. Di Falco, F. C. Porter, M. Ricci, F. Cervelli, V. A. Baranov, Z. Usubova, J. Budagov, F. Raffaelli, T. S. Miyashita, Luca Morescalchi, F. Happacher, G. Tassielli, D. Caiulo, S. Miscetti, S. Donati, M. Martini, Gianantonio Pezzullo, V. V. Glagolev, N. Atanov, S. Giovannella, F. Spinella, Yu.I. Davydov, Ren-Yuan Zhu, F. Colao, E. Pedreschi, E. Diociaiuti, B. Echenard, D. G. Hitlin, I. Sarra, F. Grancagnolo, Atanov, N., Baranov, V., Budagov, J., Caiulo, D., Cervelli, F., Colao, F., Cordelli, M., Corradi, G., Davydov, Yu. I., Di Falco, S., Diociaiuti, E., Donati, S., Donghia, R., Echenard, B., Giovannella, S., Glagolev, V., Grancagnolo, F., Happacher, F., Hitlin, D., Martini, M., Miscetti, S., Miyashita, T., Morescalchi, L., Murat, P., Pedreschi, E., Pezzullo, G., Porter, F., Raffaelli, F., Ricci, M., Saputi, A., Sarra, I., Spinella, F., Tassielli, G., Tereshchenko, V., Usubov, Z., Vasilyev, I. I., and Zhu, R. Y.

Subjects
Physics, History, Range (particle radiation), Calorimeter (particle physics), 010308 nuclear & particles physics, business.industry, Physics::Instrumentation and Detectors, Resolution (electron density), Monte Carlo method, 01 natural sciences, Computer Science Applications, Education, Silicon photomultiplier, Optics, 0103 physical sciences, Mu2e, Cathode ray, 010306 general physics, business, Beam (structure)
Abstract

The Mu2e calorimeter consists of 1348 pure CsI crystals coupled to two large area UV-extended Silicon Photomultipliers (SiPMs) organized in two separate annular disks. An intense R&D phase has been pursued to check if this configuration satisfies the Mu2e requirements. In May 2017, a dedicated test has been performed at the Beam Test Facility (BTF) in Frascati (Italy) where the large calorimeter prototype (Module-0) has been exposed to an electron beam in the energy range between 60 and 120 MeV. The prototype consists of 51 crystals, each one readout by two Mu2e SiPMs. We present results for timing and energy resolution both for electrons at normal incidence (0°) and at a grazing impact angle (50°) more similar to the experiment configuration. At 100 MeV, an energy resolution of 5.4% (7.4%) at normal (grazing) incidence has been achieved in good agreement with Monte Carlo expectation. In the same energy range, a time resolution of ~ XX ps (~ YY ps) has been measured at normal incidence with 1 GHz (250 MHz) sampling rate. Dependence of time and energy resolutions as a function of beam energy and impinging angle are also presented.

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