The Atlas liquid argon calorimeter at the CERN Large Hadron Collider: General performance and latest developments of the High Voltage system

Author

Grassi, Valdir

Author_Institution

State Univ. of New York at Stony Brook, Stony Brook, NY, USA

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

4

Abstract

The ATLAS experiment is designed to study the proton-proton collisions produced at the Large Hadron Collider (LHC) at CERN. Liquid argon sampling calorimeters are used for the identification and characteristics measurement of the electrons, photons and hadronic jets. Since the first collisions in 2010, the calorimeters operated almost optimally, playing a leading role in the discovery of the Higgs boson announced in July 2012. A special emphasis in this paper will be given on the latest developments of the high voltage power supply system. These efforts allowed to equip the calorimeters with innovative power supply modules able to temporarily sustain high current load without major voltage drop.

Keywords

particle calorimetry; position sensitive particle detectors; Atlas liquid argon sampling calorimeter; CERN large hadron collider; Higgs boson; electron characteristics measurement; electron identification measurement; general performance; hadronic jet characteristics measurement; hadronic jet identification measurement; high current load; high voltage power supply system; high voltage system; major voltage drop; photon characteristics measurement; photon identification measurement; power supply modules; proton+proton collisions; Argon; Detectors; Electrodes; Electromagnetics; Large Hadron Collider; Liquids; Power supplies;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829570

Filename

6829570