The LHCb Muon System is composed of five detection stations (M1-M5) mainly equipped with a total of 1368 Multi-Wire Proportional Chambers (MWPC). In order to allow a fast evaluation of the transverse momentum of muons, the MWPC have to provide a high detection efficiency, a fast response and a good space resolution. We present the results of a detailed study of the performance of different chambers, completely equipped with the final Front-End Electronics, measured with cosmic rays. A stand able to house 6 MWPCs and to acquire 600 TDC channels a time was used in order to measure the detection efficiency, the time resolution and the hit multiplicity as a function of the gas gain. For the first time, both the chambers with anode-wire-readout and chambers with cathode-pad-readout were tested and the results are compared. The large amount of acquired data results to be very useful to get a better knowledge of the behaviour of the chambers allowing to individuate the optimised working conditions of the apparatus and to make a realistic detector description in the LHCb Monte Carlo simulation.
Performance of the quadri-gap LHCb Muon chambers studied with cosmic rays / R. A., Nobrega; V., Bocci; E., Furfaro; G., Martellotti; F., Iacoangeli; Penso, Gianni; D., Pinci; W., Rinaldi. - STAMPA. - (2007), pp. 564-568. (Intervento presentato al convegno Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE) [10.1109/NSSMIC.2007.4436395].
Performance of the quadri-gap LHCb Muon chambers studied with cosmic rays
PENSO, Gianni;
2007
Abstract
The LHCb Muon System is composed of five detection stations (M1-M5) mainly equipped with a total of 1368 Multi-Wire Proportional Chambers (MWPC). In order to allow a fast evaluation of the transverse momentum of muons, the MWPC have to provide a high detection efficiency, a fast response and a good space resolution. We present the results of a detailed study of the performance of different chambers, completely equipped with the final Front-End Electronics, measured with cosmic rays. A stand able to house 6 MWPCs and to acquire 600 TDC channels a time was used in order to measure the detection efficiency, the time resolution and the hit multiplicity as a function of the gas gain. For the first time, both the chambers with anode-wire-readout and chambers with cathode-pad-readout were tested and the results are compared. The large amount of acquired data results to be very useful to get a better knowledge of the behaviour of the chambers allowing to individuate the optimised working conditions of the apparatus and to make a realistic detector description in the LHCb Monte Carlo simulation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
