Time reconstruction and performance of the CMS electromagnetic calorimeter


Chatrchyan S., Khachatryan V., Sirunyan A., Adam W., Arnold B., Bergauer H., ...More

Journal of Instrumentation, vol.5, no.3, 2010 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 3
  • Publication Date: 2010
  • Doi Number: 10.1088/1748-0221/5/03/t03011
  • Journal Name: Journal of Instrumentation
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Yıldız Technical University Affiliated: No

Abstract

The resolution and the linearity of time measurements made with the CMS electromagnetic calorimeter are studied with samples of data from test beam electrons, cosmic rays, and beam-produced muons. The resulting time resolution measured by lead tungstate crystals is better than 100 ps for energy deposits larger than 10 GeV. Crystal-to-crystal synchronization with a precision of 500 ps is performed using muons produced with the first LHC beams in 2008. © 2010 IOP Publishing Ltd and SISSA.