The drift chambers in the barrel region of the CMS detector are exposed to magnetic stray fields. To study the performance of the muon reconstruction and the drift time-based muon trigger, prototypes were tested under the expected magnetic field conditions at the H2 test facility at CERN. The results indicate that the overall chamber performance will not be affected. Only the bunch crossing identification capability in the small region near eta = 1.1, corresponding to the border of the solid angle region covered by the barrel, will be weakened. (C) 1998 Elsevier Science B.V. All rights reserved.
Study of magnetic field effects in drift tubes for the barrel muon chambers of the CMS detector at the LHC
GASPARINI, FABRIZIO;GASPARINI, UGO;GUAITA, PAOLA;MENEGUZZO, ANNA TERESA;RONCHESE, PAOLO;ZOTTO, PIERLUIGI;ZUMERLE, GIANNI
1998
Abstract
The drift chambers in the barrel region of the CMS detector are exposed to magnetic stray fields. To study the performance of the muon reconstruction and the drift time-based muon trigger, prototypes were tested under the expected magnetic field conditions at the H2 test facility at CERN. The results indicate that the overall chamber performance will not be affected. Only the bunch crossing identification capability in the small region near eta = 1.1, corresponding to the border of the solid angle region covered by the barrel, will be weakened. (C) 1998 Elsevier Science B.V. All rights reserved.
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