Custom HPD readout for the CMS HCAL

Priscilla B Cushman, A. Heering, A. Ronzhin

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations

Abstract

Over 10000 channels from the CMS tile/fiber hadronic calorimeter (The CMS Hadron Calorimeter TDR, CERN/LHCC 97-31, June 20, 1997) will be read out by custom 19 and 73-channel HPD's in a 4T field. Experimental constraints on the tube design have produced a faster tube with a larger active area and minimum accelerating gap. Quality assurance stations have been developed for fast processing of 600 tubes. Registration to 50 μm is done in situ, providing a custom collar with alignment pins which can be mated to a universal cookie. Lifetime measurements reveal details on aging, but operation is within CMS specifications.

Original languageEnglish (US)
Pages (from-to)289-294
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume442
Issue number1
DOIs
StatePublished - Mar 11 2000
EventThe 2nd International Conference on New Developments in Photodetection - Beaune, France
Duration: Jun 21 1999Jun 25 1999

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