Speaker
Shoushan Zhang
(Institute of High Energy Physics)
Description
The PMT array is the most important detection unit for IACT. The high precision Cosmic ray energy spectrum measurement relies on the performance of the PMT array. The PMT gain can be ageing over time, which can impact the performance of the PMT array. A facility of photoelectron meter is developed for high precision online nonlinearity calibration and monitoring the performance of the PMT array of IACT. The photoelectron meter can emit four kinds light with ratio of 1:2:3:4 and the light flux can be adjusted with the fixed ratio. The system uncertainty of the photoelectron meter is less than 0.5% and the precision of nonlinearity calibration is better than 1%.
| Registration number following "ICRC2015-I/" | 39 |
|---|---|
| Collaboration | LHAASO |
Primary author
Shoushan Zhang
(Institute of High Energy Physics)
Co-authors
Dr
Bi Baiyang
(Institute of High Energy Physics)
Prof.
Cao Zhen
(Institute of High Energy Physics)
Mr
Ge Maomao
(Yunnan University)
