Upgrade of the monitoring system of LHCb ECAL

In order to improve the stability of the LHCb ECAL monitoring system, the light guides transporting LED light to PMTs have been replaced by radiation hard quartz fibers. The behavior of transparency of the selected fibers under moderate radiation doses, up to few kGy, was studied in detail. The perf...

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Published inNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 912; pp. 205 - 208
Main Authors Guz, Yu, Konoplyannikov, A., Perret, P., Shatalov, P.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 21.12.2018
Subjects
LED monitoring system
Radiation hardness
Radiation hardness
LED monitoring system
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Summary:In order to improve the stability of the LHCb ECAL monitoring system, the light guides transporting LED light to PMTs have been replaced by radiation hard quartz fibers. The behavior of transparency of the selected fibers under moderate radiation doses, up to few kGy, was studied in detail. The performance of the upgraded version of the LHCb ECAL monitoring system is also discussed. •Transparency variations of quartz fibers at moderate radiation doses studied in detail.•The ECAL monitoring system light guides replaced to radiation hard quartz ones.•Performance of the upgraded monitoring system was studied and found satisfactory.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2017.11.037