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.
@article{arxiv.1802.08247,
title = {Quality Assurance on Un-Doped CsI Crystals for the Mu2e Experiment},
author = {N. Atanov and V. Baranov and J. Budagov and Yu. I. Davydov and V. Glagolev and V. Tereshchenko and Z. Usubov and F. Cervelli and S. Di Falco and S. Donati and L. Morescalchi and E. Pedreschi and G. Pezzullo and F. Raffaelli and F. Spinella and F. Colao and M. Cordelli and G. Corradi and E. Diociaiuti and R. Donghia and S. Giovannella and F. Happacher and M. Martini and S. Miscetti and M. Ricci and A. Saputi and I. Sarra and B. Echenard and D. G. Hitlin and C. Hu and T. Miyashita and F. Porter and L. Zhang and R. -Y. Zhu and F. Grancagnolo and G. Tassielli and P. Murat},
journal= {arXiv preprint arXiv:1802.08247},
year = {2018}
}
Comments
7 pages, 16 figures, published in IEEE TNS NS (2018)