Bochum 2009 – scientific programme
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HK: Fachverband Hadronen und Kerne
HK 84: Accelerators and Instrumentation I
HK 84.5: Talk
Friday, March 20, 2009, 12:00–12:15, H-ZO 80
The ALICE muon spectrometer — •martino gagliardi — Università di Torino, Italy — INFN Torino, Italy — CERN, Genève, Switzerland
The ALICE experiment at the Large Hadron Collider was designed to study the properties of nuclear matter at extreme energy density, with particular regard to the transition to the Quark Gluon Plasma (QGP) phase.
The ALICE muon spectrometer will analyse the production of beauty and charmed mesons in heavy ion collisions at √s= 5.5 TeV per nucleon pair, through their muonic decays. In particular, the expected quarkonia suppression by QGP will be assessed. Data will also be taken in p-p collisions at 14 TeV, which will provide both a reference for the analysis and an insight on the quarkonia production mechanism.
The muon spectrometer was designed to achieve a mass resolution as good as 100 MeV/c2 at the Υ mass. It consists of a set of absorbers, 5 tracking stations and a trigger system, all of which are now installed in the ALICE cavern. Intense commissioning is ongoing, including data-taking with cosmic rays.
A detailed description of the muon spectrometer will be presented, together with the results from the commissioning phase and the expected performance for a few physics topics.