Title :
Study of the performance and aging of RPCs
Author :
Gustavino, Carlo
Author_Institution :
Lab. Nazionali del gran Sasso, Ist. Nazionale di Fisica Nucl., Assergi, Italy
Abstract :
The study of resistive plate chambers (RPCs) carried out at the Gran Sasso National Laboratory (LNGS) over many years is presented. The performance of glass resistive plate chamber operated in avalanche mode has been studied by varying the particle rate and the temperature. The rate capability strongly improves with temperature, due to the lowering of the volume resistivity of glass electrodes. The glass RPC has also been studied in streamer mode, with several gas mixtures composed by argon, C2H2F4; IsoC4H10 and SF6: a small percentage of SF6 strongly reduces the streamer size, it allows an isobutane percentage well below the flammability limit and it improves the time resolution of the detector. Finally, a set of measurements has been carried out to assess the RPC aging under different operational conditions.
Keywords :
position sensitive particle detectors; C2H2F4 gas; IsoC4H10 gas; SF6 gas; argon gas; avalanche mode glass resistive plate chamber; flammability limit; gas mixtures; glass electrodes; streamer mode glass resistive plate chamber; streamer size; volume resistivity; Aging; Argon; Conductivity; Electrodes; Flammability; Glass; Laboratories; Liquefied natural gas; Sulfur hexafluoride; Temperature;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2005 IEEE
Print_ISBN :
0-7803-9221-3
DOI :
10.1109/NSSMIC.2005.1596594
