The trigger system of the Alice dimuon spectrometer is based on RPC detectors. We present experimental results of a beam test about rate capability, time resolution and cluster size of single gap RPC detectors operating both in 'streamer mode' and in 'avalanche mode'. We have compared the performances of small chambers (50x50 cm(2)) built with bakelite of different resistivity, from similar to 3.10(9) Omega cm to similar to 3.10(11) Omega cm. For the low resistivity RPC we obtained a rate capability of several hundreds of Hz/cm(2) when it is operating in 'streamer mode', and of several thousands of Hz/cm(2) wizen it is operating in 'avalanche mode'.
Study of Resistive Plate Chambers for the Alice dimuon spectrometer
CORTESE, Pietro;
1999-01-01
Abstract
The trigger system of the Alice dimuon spectrometer is based on RPC detectors. We present experimental results of a beam test about rate capability, time resolution and cluster size of single gap RPC detectors operating both in 'streamer mode' and in 'avalanche mode'. We have compared the performances of small chambers (50x50 cm(2)) built with bakelite of different resistivity, from similar to 3.10(9) Omega cm to similar to 3.10(11) Omega cm. For the low resistivity RPC we obtained a rate capability of several hundreds of Hz/cm(2) when it is operating in 'streamer mode', and of several thousands of Hz/cm(2) wizen it is operating in 'avalanche mode'.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
