Custom HPD readout for the CMS HCAL

被引:20
作者
Cushman, P [1 ]
Heering, A
Ronzhin, A
机构
[1] Univ Minnesota, Minneapolis, MN 55455 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
关键词
D O I
10.1016/S0168-9002(99)01236-X
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
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 4 T 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 mu m 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. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:289 / 294
页数:6
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