Studies of lead tungstate crystal matrices in high energy beams for the CMS electromagnetic calorimeter at the LHC
نویسندگان
چکیده
منابع مشابه
The CMS Lead Tungstate Electromagnetic Calorimeter
The CERN LHC will open a new regime in the exploration of fundamental interactions. Of central importance to these studies will be the precise measurement of high energy electrons and photons. The CMS experiment therefore incorporates a high resolution electromagnetic calorimeter comprising 76000 lead tungstate crystals, covering almost 4pi, and capable of operating reliably for ten years in a ...
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Light monitoring will serve as an intercalibration for compact muon solenoid (CMS) lead tungstate crystals in situ at the large hadronic collider, which is crucial for maintaining crystal calorimeter’s subpercent constant term in the energy resolution. This paper presents the design of the CMS electromagnetic calorimeter monitoring light source and high-level distribution system. The correlatio...
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Further tests of lead tungstate crystal matrices made in high energy electron beams in 1996, using new crystals, new APDs and an improved test setup confirm that an energy resolution of better than 0.6% at 100 GeV can be obtained when the longitudinal uniformity of the struck crystal is adequate. Light loss measurements under low dose irradiation are reported. It is shown that there is no loss ...
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The CMS crystal calorimeter, comprising about 80,000 scintillating lead tungstate crystals read out by avalanche photodiodes (in the barrel) and vacuum phototriodes (in the endcap), is designed to give excellent energy resolution in the demanding LHC environment. It is now entering the construction phase. A status report on the project is presented, including recent results from test beam verif...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1997
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(96)01030-3