Performance of ACCOS, an automatic crystal quality control system for the PWO crystals of the CMS calorimeter

被引：24

作者：

Auffray, E

Chevenier, G

Freire, M

Lecoq, P

Le Goff, JM

Marcos, R

Drobychev, G

Missévitch, O

Oskine, A

Zouevsky, R

Peigneux, JP

Schneegans, M

机构：

[1] CERN, Div PPE 130, CH-1211 Geneva 23, Switzerland

[2] INP, Minsk, BELARUS

[3] LAPP, Annecy, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2001年 / 456卷 / 03期

关键词：

D O I：

10.1016/S0168-9002(00)00665-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Nearly 80 000 PWO crystals for the CMS electromagnetic calorimeter will arrive at CERN/Geneva and INFN-ENEA/Rome between now and year 2004. The stringent specifications on their dimensions and optical quality have to be verified prior to their formal acceptation. Automatic systems for measuring the critical parameters of each crystal and recording them in a database have been designed and constructed. The first machine is now in stable operation at CERN. In this note, the performance of each instrument, based on the measurements on similar to 1000 pre-production crystals, is analysed in terms of stability and compared to the results of conventional benches. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：325 / 341

页数：17

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