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Results from the test bench of the Geometry Monitoring System of the ALICE Muon Spectrometer
R. Tieulent1, A. Béteille2, J.-Y. Grossiord1, V. Kakoyan, S. Kox2, M. Méziane2, J.F. Muraz2, P. Pillot1, 2
ALICE Collaboration(s)

We present the results obtained with the test bench of the Geometry Monitoring System (GMS) for the ALICE Muon Spectrometer. It consists in a mock up, reproducing at full scale, three half planes of the chambers 6, 7 and 8 of the spectrometer. We show that the GMS is able to measure transverse displacements with an accuracy of 1.5 microm. We show also that the resolution deteriorates by a factor 3 to 4 when thermal gradients are generated.
1 :  IPNL - Institut de Physique Nucléaire de Lyon
2 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physique/Physique/Instrumentations et Détecteurs
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ALICE-INT-2007-010.pdf(3 MB)