Time reconstruction and performance of the CMS electromagnetic calorimeter
JOURNAL OF INSTRUMENTATION, vol.5, 2010 (SCI-Expanded)
- Publication Type: Article / Article
- Volume: 5
- 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
- Keywords: Calorimeters, Large detector systems for particle and astroparticle physics
- Middle East Technical University Affiliated: Yes
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.