Cosmic ray effect on the X-ray Trigger Telescope of UFFO/Lomonosov using YSO scintillation crystal array in space

M. B. Kim, S. Jeong, H. M. Jeong, V. Leonov, J Lee, I.H. Park, A.M. Amelushkin, V. O. Barinova, A.V. Bogomolov, V. V. Bogomolov, Søren Brandt, Carl Budtz-Jørgensen, A. J. Castro-Tirado, P. Chen, P. Connell, G. Garipov, E. S. Gorbovskoy, N. L. Dzhioeva, C. Eyles, M.-H. A. HuangA.F. Iyudin, V. V. Kalegaev, P. S. Kasarjan, J. E. Kim, V. G. Kornilov, E. A. Kuznetsova, H. Lim, V. M. Lipunov, T. -C. Liu, I. N. Myagkova, J. W. Nam, M. I. Panasyuk, M. I. Panchenko, V. L. Petrov, A. V. Prokhorov, V. Reglero, J. Ripa, J. M. Rodrigo, A. N. Shustova, S. I. Svertilov, N. V Tyurina, I. V. Yashin

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Abstract

UFFO Burst Alert and Trigger telescope (UBAT) is the X-ray trigger telescope of UFFO/Lomonosov to localize X-ray source with coded mask method and X-ray detector. Its X-ray detector is made up of 36 8×8 pixels Yttrium OxyorthoSilicate (Y2SiO5:Ce, YSO) scintillation crystal arrays and 36 64-channel Multi-Anode PhotoMultiplier Tubes (MAPMTs) for space mission. Its effective detection area is 161cm2 and energy range is several keV to 150 keV. It was successfully launched in April 28, 2016. In several calibration run, we got several X-ray background data. We already knew X-ray background flux is 2-3 counts/cm2/sec in space. However our X-ray background data shows approximately 7-8 times higher than what we know. There are many candidates to explain high X-ray background count in space. One of candidates is cosmic ray. We will report cosmic ray effect on the X-ray detector using YSO scintillation crystal arrays in space.
Original languageEnglish
Article number218
JournalP o S - Proceedings of Science
Number of pages8
ISSN1824-8039
Publication statusPublished - 2017
Event35th International Cosmic Ray Conference (ICRC2017) - Busan Exhibition & Convention Center, Busan, Korea, Republic of
Duration: 12 Jul 201720 Jul 2017

Conference

Conference35th International Cosmic Ray Conference (ICRC2017)
LocationBusan Exhibition & Convention Center
CountryKorea, Republic of
CityBusan
Period12/07/201720/07/2017

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