Title :
A four-gap glass-RPC time-of-flight array with 90 ps time resolution
Author :
Akindinov, A. ; Fonte, P. ; Formenti, F. ; Golovine, V. ; Klempt, W. ; Kluge, A. ; Martemiyanov, A. ; Martinengo, P. ; Pinhão, J. ; Smirnitski, A. ; Spegel, M. ; Szymanski, P. ; Zalipska, J.
Author_Institution :
ITEP, Moscow, Russia
fDate :
10/1/2001 12:00:00 AM
Abstract :
In this paper, we describe the performance of a prototype developed in the context of the ALICE time-of-flight research and development system. The detector module consists of a 32-channel array of 3×3 cm2 glass resistive plate chamber (RPC) cells, each of which has four accurately spaced gaps of 0.3 mm thickness arranged as a pair of double-gap resistive plate chambers. Operated with a nonflammable gas mixture at atmospheric pressure, the system achieved a time resolution of 90 ps at 98% efficiency with good uniformity and moderate crosstalk. This result shows the feasibility of large-area high-resolution time-of-flight systems based on RPCs at affordable cost
Keywords :
position sensitive particle detectors; streamer chambers; 0.3 mm; 90 ps; crosstalk; double-gap resistive plate chambers; four-gap design; glass resistive plate chamber; time resolution; time-of-flight; uniformity; Costs; Crosstalk; Detectors; Electrodes; Magnetic field measurement; Mesons; Particle measurements; Photomultipliers; Sensor arrays; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
