A Caltech Library Service

The CMS ECAL Barrel HV system

Bartoloni, A. and Baccaro, S. and Barone, L. M. and Cavallari, F. and Dafinei, I. and del Re, D. and Diemoz, M. and Di Marco, E. and Grassi, M. and Longo, E. and Meridiani, P. and Micheli, F. and Organtini, G. and Nourbakhsh, S. and Paramatti, R. and Pellegrino, F. and Rahatlou, S. and Rovelli, C. and Sigamani, M. and Soffi, L. (2013) The CMS ECAL Barrel HV system. Journal of Instrumentation, 8 (2). Art. No. C02039. ISSN 1748-0221. doi:10.1088/1748-0221/8/02/C02039.

PDF - Published Version
Creative Commons Attribution.


Use this Persistent URL to link to this item:


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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:© 2013 CERN for the benefit of the CMS collaboration. Published under the terms of the Creative Commons Attribution 3.0 licence by IOP Publishing Ltd and Sissa Medialab srl. Any further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation and DOI. Received: November 14, 2012. Accepted: December 13, 2012. Published: February 18, 2013. We thank all the people that supported us during these 14 years of activities especially those of CAEN Company. We also thank Ing. Stefano Petrucci, designer of the A1520E module used in the system, for his crucial and continuous support to our work.
Funding AgencyGrant Number
Subject Keywords:Voltage distributions; Calorimeters
Issue or Number:2
Classification Code:PACS: 29.40.Gx, 29.50.+v, 85.60.Dw, 29.40.Vj
Record Number:CaltechAUTHORS:20130416-074318014
Persistent URL:
Official Citation:The CMS ECAL Barrel HV system A Bartoloni et al 2013 JINST 8 C02039
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37954
Deposited By: Ruth Sustaita
Deposited On:16 Apr 2013 15:29
Last Modified:09 Nov 2021 23:32

Repository Staff Only: item control page