Flight Calibration of the Photodetector in the TUS Detector

— A technique is proposed for carrying out flight calibration of a photomultiplier tubes (PMTs) of the photodetector in the orbital TUS detector of ultra-high-energy cosmic rays in the absence of a calibration signal. The new technique consists in calculating two statistical characteristics of digit...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2021-05, Vol.64 (3), p.450-455
Main Authors: Klimov, P. A., Sigaeva, K. F., Sharakin, S. A.
Format: Article
Language:English
Subjects:
Biology
Calibration
Cosmic rays
Electrical Engineering
Measurement Science and Instrumentation
Medicine
Modules
Photometers
Photomultiplier tubes
Physical Chemistry
Physical Instruments for Ecology
Physics
Physics and Astronomy
Sensors
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Summary:— A technique is proposed for carrying out flight calibration of a photomultiplier tubes (PMTs) of the photodetector in the orbital TUS detector of ultra-high-energy cosmic rays in the absence of a calibration signal. The new technique consists in calculating two statistical characteristics of digitized signals from detected events (their mean value A and variance ) and constructing the linear approximation ( A ) for stationary signals. This technique has been tested in a laboratory experiment with a photodetector module, which is identical to the modules used in the detector. As a result, the gains of most photodetector channels of the TUS detector have been estimated again and the changes that occurred (in particular, the “aging effect”) have been analyzed.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441221030192