A full-size prototype of the second barrel RPC station (RB2) for the CMS de
tector has been tested under high-irradiation flux at the CERN Gamma Irradi
ation Facility (GIF) during the 1999 beam test. The main requirements of RP
Cs as trigger detector have been studied: cluster size, time resolution, ef
ficiency and rate capability. The timing features of a new front-end electr
onics were also investigated. Only the results obtained with the detector w
orking in single-gap mode are reported here. (C) 2000 Elsevier Science B.V.
All rights reserved.