Design and Status of the Mu2e Crystal Calorimeter

被引：24

作者：

Atanov, N. ^{[1
]}

Baranov, V. ^{[1
]}

Budagov, J. ^{[1
]}

Davydov, Y. I. ^{[1
]}

Glagolev, V. ^{[1
]}

Tereshchenko, V. ^{[1
]}

Usubov, Z. ^{[1
]}

Cervelli, F. ^{[2
]}

Di Falco, S. ^{[2
]}

Donati, S. ^{[2
]}

Morescalchi, L. ^{[2
]}

Pedreschi, E. ^{[2
]}

Pezzullo, G. ^{[2
]}

Raffaelli, F. ^{[2
]}

Spinella, F. ^{[2
]}

Colao, F. ^{[3
]}

Cordelli, M. ^{[3
]}

Corradi, G. ^{[3
]}

Diociaiuti, E. ^{[3
]}

Donghia, R. ^{[3
]}

Giovannella, S. ^{[3
]}

Happacher, F. ^{[3
]}

Martini, M. ^{[3
]}

Miscetti, S. ^{[3
]}

Ricci, M. ^{[3
]}

Saputi, A. ^{[3
]}

Sarra, I. ^{[3
]}

Echenard, B. ^{[4
]}

Hitlin, D. G. ^{[4
]}

Miyashita, T. ^{[4
]}

Porter, F. ^{[4
]}

Zhu, R. -Y. ^{[4
]}

Grancagnolo, F. ^{[5
]}

Tassielli, G. ^{[5
]}

Murat, P. ^{[6
]}

机构：

[1] Joint Inst Nucl Res, Dubna 141980, Russia

[2] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[3] Ist Nazl Fis Nucl, Lab Nazl Frascati, POB 13, I-00044 Frascati, Italy

[4] CALTECH, Pasadena, CA 91125 USA

[5] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[6] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2018年 / 65卷 / 08期

关键词：

Crystals; energy resolution; high energy physics instrumentation; particle beams; photodetectors; radiation hardness; semiconductor detectors; solid scintillation detectors;

D O I：

10.1109/TNS.2018.2790702

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Mu2e experiment at Fermilab searches for the charged-lepton flavor violating (CLFV) conversion of a negative muon into an electron in the field of an aluminum nucleus, with a distinctive signature of a monoenergetic electron of energy slightly below the muon rest mass (104.967 MeV). The Mu2e goal is to improve by four orders of magnitude the search sensitivity with respect to the previous experiments. Any observation of a CLFV signal will be a clear indication of new physics. The Mu2e detector is composed of a tracker, an electromagnetic calorimeter, and an external veto for cosmic rays surrounding the solenoid. The calorimeter plays an important role in providing particle identification capabilities, a fast online trigger filter, a seed for track reconstruction while working in vacuum, in the presence of 1-T axial magnetic field and in a harsh radiation environment. The calorimeter requirements are to provide a large acceptance for 100-MeV electrons and reach at these energies: 1) a time resolution better than 0.5 ns; 2) an energy resolution <10%; and 3) a position resolution of 1 cm. The calorimeter design consists of two disks, each one made of 674-undoped cesium iodine crystals read by two large area arrays of UV-extended silicon photomultipliers (SiPMs). We report here the construction and the test of the Module-0 prototype. The Module-0 has been exposed to an electron beam in the energy range around 100 MeV at the Beam Test Facility in Frascati. Preliminary results of timing and energy resolution at normal incidence are shown. A discussion of the technical aspects of the calorimeter engineering is also reported in this paper.

引用

页码：2073 / 2080

页数：8

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