PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-instrumentation EAS
A study about effects of background light on the gain of Photomultiplier Tubes
L. Yin*, Z. Cao, S.S. Zhang, B.Y. Bi, C. Wang  on behalf of the LHAASO Collaboration
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Photomultiplier Tubes (PMT) are mostly used in air Cherenkov light detection in extensive air
shower of cosmic rays. The Cherenkov telescopes work at clear and moonless nights, therefore it
is susceptible to the background of stars in the sky; and with the Earth’s rotation and revolution,
the affection of background is different yet. In this case, we conducted an experiment to evaluate
the impact of night-sky background (NSB) to the gain of PMTs. By optimizing the voltage divider
of PMT, one can decrease the influence brought by NSB on the gain of PMT.
DOI: https://doi.org/10.22323/1.301.0382
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