Translator Disclaimer
Paper
29 July 2015 The laser calibration system of the TOP detector
Author Affiliations +
Proceedings Volume 9659, International Conference on Photonics Solutions 2015; 96590C (2015) https://doi.org/10.1117/12.2194350
Event: International Conference on Photonics Solutions 2015, 2015, Hua Hin, Thailand
Abstract
The TOP detector at the Belle II Experiment is a particle identification detector, devoted mainly to the separation of charged pions and kaons. The charged particles emit Cherenkov photons when traversing a quartz radiator and these photons are converted inside micro-channel plates photomultipliers. The time of arrival and position of the photoelectrons, detected with excellent spatial and time resolution, are used to reconstruct the angle of the Cherenkov light emitted by the charged particle. The monitoring of the time stability and the measurement of the quantum efficiency of the photomultipliers are performed with a laser calibration system, with a target time resolution better than 50 ps. The system is a combination of a picosecond laser source, long single mode fibers, fiber bundles, and microlenses, which are needed to illuminate all the channels of the photomultipliers. A detailed description of the laser calibration system and its properties is given.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Benettoni, A. Gaz, S. Lacaprara, M. Posocco, P. Sartori, R. Stroili, E. Torassa, R. Mussa, and U. Tamponi "The laser calibration system of the TOP detector", Proc. SPIE 9659, International Conference on Photonics Solutions 2015, 96590C (29 July 2015); https://doi.org/10.1117/12.2194350
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

ALFA detector: timing and trigger
Proceedings of SPIE (October 25 2013)
Calibration system for sub-100-ps relative timing
Proceedings of SPIE (March 11 1987)
JEM-X: three years in space
Proceedings of SPIE (June 15 2006)

Back to Top