| Citace |
KIM, Minbin, Jakub ŘÍPA, Il H. PARK, Vitaly BOGOMOLOV, Søren
BRANDT, Carl BUDTZ-JØRGENSEN, Alberto J. CASTRO-TIRADO,
Sheng-Hsiung CHANG, Yenyun CHANG, Chia Ray CHEN, C.-W. CHEN,
Pisin CHEN, Paul CONNELL, Chris EYLES, Georgii GAIKOV, Gihan
HONG, Jian Jung HUANG, Ming-Huey Alfred HUANG, Soomin JEONG,
Jieun KIM, Jik LEE, Heuijin LIM, Chih-Yang LIN, Tsung-Che LIU,
Jiwoo NAM, Mikhail PANASYUK, Vasily PETROV, Victor REGLERO,
Juana M. RODRIGO, Sergey SVERTILOV, Nikolay VEDENKIN, Ming Zu
WANG a Ivan YASHIN. Detection of Low-Energy X-rays Using YSO
Scintillation Crystal Arrays for GRB Experiments. Universe.
MDPI, 2021, roč. 7, č. 11, s. 1-12. ISSN 2218-1997. Dostupné z:
https://dx.doi.org/10.3390/universe7110396. |
| Popis |
We developed an X-ray detector using 36 arrays, each consisting of a 64-pixellated yttrium oxyorthosilicate (YSO) scintillation crystal and a 64-channel multi-anode photomultiplier tube. The X-ray detector was designed to detect X-rays with energies lower than 10 keV, primarily with the aim of localizing gamma-ray bursts (GRBs). YSO crystals have no intrinsic background, which is advantageous for increasing low-energy sensitivity. The fabricated detector was integrated into UBAT, the payload of the Ultra-Fast Flash Observatory (UFFO)/Lomonosov for GRB observation. The UFFO was successfully operated in space in a low-Earth orbit. In this paper, we present the responses of the X-ray detector of the UBAT engineering model identical to the flight model, using 241Am and 55Fe radioactive sources and an Amptek X-ray tube. We found that the X-ray detector can measure energies lower than 5 keV. As such, we expect YSO crystals to be good candidates for the X-ray detector materials for future GRB missions.
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