S. Marcellini

Performance of the drift tubes for the barrel muon chambers of the CMS detector at LHC

Abstract The barrel muon chambers of the CMS detector consist of three sets of four layers of rectangular drift tubes. The performance of several prototypes was measured in a muon beam for various experimental conditions. Special emphasis was given to study performance aspects related to the trigger capability of the chambers.

Further studies on a DTBX prototype for the CMS muon detector at LHC

Abstract The performance of a small prototype chamber of the baseline project for the muon barrel detector for CMS has been studied in a muon beam. Its efficiency with different gases and wire diameters, the trigger possibilities and the response in presence of a large number of electromagnetic secondaries associated to the muon are evaluated. The results are compared with a full Monte Carlo simulation.

Limited streamer tubes for the OPAL hadron calorimeter

Abstract This paper describes the manufacture of multicell plastic limited streamer chambers for use in the hadron calorimeter of the OPAL detector at LEP. The chambers are of the PVC coverless type with highly resistive cathodes. We discuss the assembly procedure with particular emphasis on the crucial cathode preparation process. A summary of test results is also presented.

Simulations in the development of the barrel muon chambers for the CMS detector at LHC

The development of the barrel drift chambers for the CMS muon detector at the CERN Large Hadron Collider is supported by a variety of simulation calculations, based on the GARFIELD drift chamber simulation program and the GEANT detector simulation package. This study surveys the results influencing the actual chamber design. The dependence of the drift cell performance on shape and position of the cell electrodes as well as on the mechanical tolerances is shown. The results obtained for space-time relation and spatial resolution are in good agreement to test beam measurements on prototypes.