Published February 2013 | Version v1
Journal article Metadata-only

The CMS ECAL Barrel HV system

Creators

  • 1. INFN ROMA, P.le Aldo Moro 2, 00185 Roma (Italy)
  • 2. ENEA — Casaccia Research Center, Via Anguillarese 301, 00123 Roma (Italy)
  • 3. California Institute of Technology, 1201 East California Boulevard, Pasadena, CA 91125 (United States)

Description

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.

Availability note (English)

Available from http://dx.doi.org/10.1088/1748-0221/8/02/C02039

Additional details

Identifiers

DOI
10.1088/1748-0221/8/02/C02039;

Publishing Information

Journal Title
Journal of Instrumentation
Journal Volume
8
Journal Issue
02
Journal Page Range
p. C02039
ISSN
1748-0221

Conference

Title
Topical Workshop on Electronics for Particle Physics 2012
Acronym
TWEPP12
Dates
17-21 Sep 2012
Place
Oxford (United Kingdom)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44068295
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CALORIMETERS; CRYSTALS; READOUT SYSTEMS; TUNGSTATES
Descriptors DEC
MEASURING INSTRUMENTS; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS