The CMS electromagnetic calorimeter (ECAL) comprises 75848 scintillating lead tungstate crystals. 61200 crystals are contained in the ECAL Barrel section and are read out by avalanche photodiode (APD) with internal gain of about 50. This gain is achieved with a high voltage (HV) of about 400 Volts. The gain stability requirement implies a supply voltage stable to within 0.01%. We describe our experience with the installed Barrel HV power supply system, which has been used for data taking since 2008.
The CMS ECAL Barrel HV system / A., Bartoloni; S., Baccaro; Barone, Luciano Maria; F., Cavallari; I., Dafinei; DEL RE, Daniele; M., Diemoz; E., Di Marco; M., Grassi; Longo, Egidio; P., Meridiani; Micheli, Francesco; Organtini, Giovanni; S., Nourbakhsh; Paramatti, Riccardo; F., Pellegrino; Rahatlou, Shahram; C., Rovelli; M., Sigamani; Soffi, Livia. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 8:02(2013), pp. C02039-C02039. [10.1088/1748-0221/8/02/c02039]
The CMS ECAL Barrel HV system
BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;MICHELI, FRANCESCO;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;SOFFI, LIVIA
2013
Abstract
The CMS electromagnetic calorimeter (ECAL) comprises 75848 scintillating lead tungstate crystals. 61200 crystals are contained in the ECAL Barrel section and are read out by avalanche photodiode (APD) with internal gain of about 50. This gain is achieved with a high voltage (HV) of about 400 Volts. The gain stability requirement implies a supply voltage stable to within 0.01%. We describe our experience with the installed Barrel HV power supply system, which has been used for data taking since 2008.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
