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Performance and commissioning of HAPDs in the Aerogel RICH counter
- Source :
- Nucl.Instrum.Meth.A
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; The Belle II Aerogel Ring Imaging Cherenkov (ARICH) counter uses the angular distribution of Cherenkov photons emitted in silica aerogel to discriminate between charged pions and kaons. The Hybrid Avalanche Photo Detector (HAPD) is used as the photo-sensor, and is clearly the most critical component of the detector. HAPDs were installed into ARICH in July 2017, and ARICH was installed in the Belle II spectrometer in the end of 2017. During the Belle II beam commissioning in spring 2018, the performance of HAPDs was evaluated through measurements of the offset value, noise level and pulse height. Long term stability of the signal-to-noise ratio and the fraction of dead channel was also monitored. The signal-to-noise ratio exceeded 6, and the fraction of dead channels was less than 1%. The results of the performance evaluation and of the commissioning showed that the ARICH counter fulfills the requirements.
- Subjects :
- Nuclear and High Energy Physics
noise
Photon
Cherenkov detector
Physics::Instrumentation and Detectors
aerogel
Photodetector
BELLE
Photon detector
7. Clean energy
01 natural sciences
law.invention
Nuclear physics
Pion
law
0103 physical sciences
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
ARICH
Instrumentation
RICH
Cherenkov radiation
Physics
Spectrometer
010308 nuclear & particles physics
Detector
Aerogel
stability
High Energy Physics::Experiment
photon: detector
performance
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nucl.Instrum.Meth.A
- Accession number :
- edsair.doi.dedup.....5be24897f1acc595bd827c3e7dfe16ea