@article{ba3d5ff9fbf24a989c27722ec7e3b6a5,
title = "CsI calorimeter for the J-PARC KOTO experiment",
abstract = "An electromagnetic calorimeter made of undoped CsI crystals is used in the J-PARC KOTO experiment to search for new physics beyond the standard model with the KL→π0ν{\=ν} decay. The calorimeter is designed to operate in vacuum of 0.1 Pa and in a high-rate environment where the counting rate due to KL decays is O(100) kHz. A special method to calibrate the calorimeter during the data taking without using a tracking system for charged particles is reported. The energy, position, and timing resolutions of the calorimeter were evaluated in several beam tests, and the resolutions satisfy the required performance. The energy resolution with the total energy E is 0.66⊕1.81∕E[GeV]% in the inner region of the calorimeter.",
keywords = "Calorimeter, Pure CsI, Undoped CsI",
author = "K. Sato and Lee, {J. W.} and S. Banno and M. Campbell and J. Comfort and T. Furukawa and E. Iwai and N. Kawasaki and Komatsubara, {T. K.} and Lim, {G. Y.} and Y. Maeda and T. Masuda and T. Matsumura and D. Mcfarland and R. Murayama and D. Naito and Y. Nakaya and H. Nanjo and T. Nomura and Y. Odani and T. Ota and Ri, {Y. D.} and M. Sasaki and N. Sasao and S. Seki and T. Shimogawa and T. Shinkawa and K. Shiomi and Y. Sugiyama and S. Suzuki and Y. Tajima and M. Tecchio and M. Togawa and T. Yamanaka and Y. Yanagida and H. Yokota and H. Yoshimoto and Wah, {Y. W.} and H. Watanabe and J. Xu",
note = "Funding Information: We would like to thank the J-PARC Accelerator and Hadron Experimental Facility groups for their support and for providing stable beam operations. We would also like to recognize the KEK Central Computer System for providing the huge computing power. This material is based upon work supported by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan and the Japan Society for the Promotion of Science (JSPS) under the MEXT, Japan KAKENHI Grant No. JP18071006 and the JSPS, Japan KAKENHI Grant No. JP23224007 , and through the Japan-U.S. Cooperative Research Program in High Energy Physics ; and the U.S. Department of Energy , Office of Science, Office of High Energy Physics, under Award No. DE-SC0004407 . Funding Information: We would like to thank the J-PARC Accelerator and Hadron Experimental Facility groups for their support and for providing stable beam operations. We would also like to recognize the KEK Central Computer System for providing the huge computing power. This material is based upon work supported by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan and the Japan Society for the Promotion of Science (JSPS) under the MEXT, Japan KAKENHI Grant No. JP18071006 and the JSPS, Japan KAKENHI Grant No. JP23224007, and through the Japan-U.S. Cooperative Research Program in High Energy Physics; and the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award No. DE-SC0004407. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",
year = "2020",
month = dec,
day = "1",
doi = "10.1016/j.nima.2020.164527",
language = "English",
volume = "982",
journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
issn = "0168-9002",
publisher = "Elsevier",
}