The CMS Calorimeter in 2007: Performance and Physics Goals

Lecoq, P.

doi:10.1109/tns.2007.910973

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2009

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“…The ECAL must be fast, have high granularity and be radiation resistant to lifetime doses amounting to 4 kGy and 2×10 13 n/cm 2 in the central Barrel and up to 50 times higher in the forward Endcaps. The design of the ECAL is described in detail elsewhere [2].…”

Section: Introductionmentioning

confidence: 99%

Avalanche photodiodes and vacuum phototriodes for the electromagnetic calorimeter of the CMS experiment at the Large Hadron Collider

Hobson¹

2009

Nuclear Instruments and Methods in Physics Research Section A:

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The homogeneous lead tungstate electromagnetic calorimeter for the Compact Muon Solenoid detector at the Large Hadron Collider operates in a challenging radiation environment. The central region of the calorimeter uses large-area avalanche photodiodes to detect the fast blue-violet scintillation light from the crystals. The high hadron fluence in the forward region precludes the use of these photodiodes and vacuum phototriodes are used in this region. The constructional complexity of the calorimeter, which comprises 75848 individual crystals, plus the activation of material make repair during the lifetime of the detector virtually impossible. We describe here the key features and performance of the photodetectors and the quality assurance procedures that were used to ensure that the proportion of photodetectors that fail over the lifetime of CMS will be limited to a fraction of a percent.

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Section: Introductionmentioning

confidence: 99%

Avalanche photodiodes and vacuum phototriodes for the electromagnetic calorimeter of the CMS experiment at the Large Hadron Collider

Hobson¹

2009

Nuclear Instruments and Methods in Physics Research Section A:

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The CMS Calorimeter in 2007: Performance and Physics Goals

Cited by 1 publication

References 10 publications

Avalanche photodiodes and vacuum phototriodes for the electromagnetic calorimeter of the CMS experiment at the Large Hadron Collider

Avalanche photodiodes and vacuum phototriodes for the electromagnetic calorimeter of the CMS experiment at the Large Hadron Collider

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