|Speaker:||Pierre-Simon Mangeard (CPPM, Marseille)|
|Title:||In situ commissioning of the ATLAS electromagnetic calorimeter and early Z' to ee discovery potential|
|Date (JST):||Wed, Mar 18, 2009, 13:30 - 14:30|
|Place:||Seminar Room at IPMU Prefab. B|
After about fifteen years of research and development, the ATLAS detector is ready to operate and recorded, as a whole system at the end of 2008, several millions of cosmic events as well as first LHC data.
This achievement is based on the long experience of beam tests and on the large effort towards detector in situ commissisoning undertaken by
the ATLAS collaboration since several years. This promises fast ability
to perform searches for evidence of Higgs boson and new physics.
I contributed heavily to the in situ commissioning of the electromagnetic calorimeter. To verify its performance, I studied the first cosmic data taken in 2006 which allowed the first in situ analysis of dead channels, energy reconstruction and detector response uniformity.This participation to the commisiosining has continued with the study of the single beam data recorded during the first week of LHC operatiion.
Expanding on my experties of the elctromagnetic calorimeter, I focused my physics analysis, prepared with simulation, on the promising discovery potential of physics beyond the standard model at LHC via the di-electron/di-photon decay of new heavy gauge boson in the early LHC data (the first 100 pb^-1). Possible limitations coming from early hardware problems or imperfect electron energy calibration in first data have been estimated. According to the new schedule of LHC operatiorn, this analysis will be possible with 10 TeV pp collisions data in 2010.