Details

Autor(en) / Beteiligte

• Bell, K.W.
• Brown, R.M.
• Cockerill, D.J.A.
• Flower, P.S.
• Hobson, P.R.
• Kennedy, B.W.
• Lintern, A.L.
• Selby, C.S.
• Sharif, O.
• Sproston, M.
• Williams, J.H.

Titel

Vacuum phototriodes for the CMS electromagnetic calorimeter endcap

Ist Teil von

• IEEE transactions on nuclear science, 2004-10, Vol.51 (5), p.2284-2287

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2004

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• The measurement of scintillation light from the lead tungstate crystals of the Compact Muon Solenoid (CMS) electromagnetic calorimeter (ECAL) poses a substantial technical challenge, particularly in the endcap regions, where the radiation levels are highest. The photodetectors must be fast, sensitive, radiation-hard, and operate with significant internal gain in a magnetic field of 4 Tesla. The measured performance characteristics of the first batches of series production vacuum phototriodes (VPT), developed to satisfy the needs of CMS, will be described.