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Cross-calibration of two automatic quality control systems for the CMS ECAL crystals
- Source :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2004, 523, pp.355-364, HAL
- Publication Year :
- 2004
- Publisher :
- ELSEVIER SCIENCE BV, 2004.
-
Abstract
- The barrel part of the CMS electromagnetic calorimeter consists of about 75 000 Lead Tungstate (PbWO 4 ) crystals arranged in 36×4 modules which are assembled in two Regional Centres, in Rome and at CERN. Two automatic machines have been designed to check the crystal quality before assembly. The main crystal characteristics are compared to a set of specifications included in the contract with the crystal producers. The measurement stability and cross-calibration between the two machines is a fundamental issue, which has to be monitored throughout the construction phase. This paper describes comparisons between measurements made at the two regional centres to ensure a consistent and reliable crystal quality control.
- Subjects :
- Physics
optical properties
Nuclear and High Energy Physics
Large Hadron Collider
Physics::Instrumentation and Detectors
010308 nuclear & particles physics
Mechanical engineering
Quality control
calibration
electromagnetic calorimeter
measurement automation
scintillating crystals
01 natural sciences
Particle detector
Crystal
Quality (physics)
Electromagnetic calorimeter
0103 physical sciences
Measuring instrument
Calibration
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
Instrumentation
Subjects
Details
- Language :
- English
- ISSN :
- 01689002
- Database :
- OpenAIRE
- Journal :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2004, 523, pp.355-364, HAL
- Accession number :
- edsair.doi.dedup.....e013d98b24a20ed943ffc37e690580ea