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High precision, low disturbance calibration of the High Voltage system of the CMS Barrel Electromagnetic Calorimeter
The CMS Electromagnetic Calorimeter utilizes scintillating lead tungstate crystals, with avalanche photodiodes (APD) as photo-detectors in the barrel part. 1224 HV channels bias groups of 50 APD pairs, each at a voltage of about 380 V. The APD gain dependence on the voltage is 3pct/V. A stability of...
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| Lenguaje: | eng |
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2016
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| Acceso en línea: | https://dx.doi.org/10.1088/1748-0221/12/01/C01090 http://cds.cern.ch/record/2238557 |