Wednesday, 26 Feb 2020
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Dr. Isabelle Wingerter

Research Director
Laboratoire d'Annecy-le-Vieux de physique des particules, CNRS/IN2P3, France.

March 2011

I am currently a member of the ATLAS experiment, concentrating on the operation and the performance of the
liquid argon (LAr) calorimeter. The ATLAS LAr calorimeter plays an important (essential ?) role for the triggering,
reconstruction and analysis of physics events. The calorimeter serves to identify electrons and photons,
reconstruct jets, measure the missing transverse energy, all ingredients which are often the key elements when
measuring cross-sections or searching for new physics phenomena.

In 1983, as a PhD student, I joined the UA1 experiment with the LAPP-Annecy group to study ppbar collisions at
√s=630 GeV. I studied the background to a possible top signal. In 1985 I became staff member of LAPP with a
position as chargé de recherche of CNRS. In 1987, with a CERN fellowship, I joined the OPAL experiment at
LEP and worked on the first luminosity measurement. In 1991, I joined the RD3 collaboration to test the first
prototypes of the ATLAS LAr calorimeter with accordion geometry. Between 1997 and 2001, I joined the NA48
experiment at CERN with the LAL-Orsay group. NA48 has measured the ratio R(εʼ/ε) and proven the existence
of direct CP violation in the Kaon system. Since 2001, I have participated to the tests of ATLAS calorimeter
modules in beam tests and then to the detector commissioning and operation with LHC collisions.
In the lecture in calorimetry, I shall describe the interaction of high energy particle with matter, the means to
collect and measure the deposited energy and a few detector techniques.


Do you want to know more?

  • [1]. Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s = 7 TeV with the
    ATLAS detector, accepted by Phys Rev D.
  • [2]. The ATLAS collaboration, Readiness of the ATLAS Liquid Argon Calorimeter for LHC collisions. EPJC 70
    (2010) 723
  • [3]. M. Aharrouche et al., Measurement of the Response of the ATLAS Liquid Argon Barrel Calorimeter to
    Electrons at the 2004 Combined Test-Beam. Accepted by Nuclear Inst. and Methods in Physics Research, A
  • [4]. J. Colas et al, Electronics calibration board for the ATLAS liquid argon calorimeters. NIM A 593 (2008)
  • [5]. The ATLAS Collaboration, The ATLAS Experiment at the CERN Large Hadron Collider, 2008 JINST 3
  • [6]. Batley, J.R. et al; A precision measurement of direct CP violation in the decay of neutral kaons into two pions
    - NA48 Collaboration - 2002. Physics Letters B: 544 (2002) - 97-112
  • Associate Professor
    Research Center for Neutrino Science, Tohoku University, Japan.