TY - JOUR
T1 - Ageing tests on the low-resistivity RPC for the ALICE dimuon arm
AU - Arnaldi, R.
AU - Baldit, A.
AU - Barret, V.
AU - Bastid, N.
AU - Blanchard, G.
AU - Chiavassa, E.
AU - Cortese, P.
AU - Crochet, Ph
AU - Dellacasa, G.
AU - De Marco, N.
AU - Drancourt, C.
AU - Dupieux, P.
AU - Espagnon, B.
AU - Ferretti, A.
AU - Forestier, B.
AU - Gallio, M.
AU - Genoux-Lubain, A.
AU - Insa, C.
AU - Jouve, F.
AU - Lamoine, L.
AU - Lefevre, F.
AU - Manso, F.
AU - Mereu, P.
AU - Musso, A.
AU - Oppedisano, C.
AU - Piccotti, A.
AU - Poggio, F.
AU - Royer, L.
AU - Rosnet, Ph
AU - Saturnini, P.
AU - Scalas, E.
AU - Scomparin, E.
AU - Sigaudo, F.
AU - Travaglia, G.
AU - Vercellin, E.
PY - 2003/8/1
Y1 - 2003/8/1
N2 - The trigger for the Dimuon Forward Spectrometer of the forthcoming ALICE experiment at CERN LHC will be provided by low-resistivity, single gap Resistive Plate Chambers working in streamer mode. Different ageing test were performed to measure and improve the life-time of the detector. Dummy chambers have been built to understand the effects of continuous gas flow upon the Bakelite resistivity: the results concerning our standard gas mixture (49% Ar, 40% forane, 7% isobutane and 4% SF6) are reported, and compared with the same mixture in which ∼1% of water vapor is added. Moreover, two ageing test of 1 month each have been carried out at the Gamma Irradiation Facility at CERN during 2001. The efficiency for cosmic rays under γ irradiation of RPCs coated with different thicknesses of linseed oil was measured. After protracted operation, the detectors have shown an increase of the current and of the background rate. The increase is slower in the chamber with a thicker oil coating.
AB - The trigger for the Dimuon Forward Spectrometer of the forthcoming ALICE experiment at CERN LHC will be provided by low-resistivity, single gap Resistive Plate Chambers working in streamer mode. Different ageing test were performed to measure and improve the life-time of the detector. Dummy chambers have been built to understand the effects of continuous gas flow upon the Bakelite resistivity: the results concerning our standard gas mixture (49% Ar, 40% forane, 7% isobutane and 4% SF6) are reported, and compared with the same mixture in which ∼1% of water vapor is added. Moreover, two ageing test of 1 month each have been carried out at the Gamma Irradiation Facility at CERN during 2001. The efficiency for cosmic rays under γ irradiation of RPCs coated with different thicknesses of linseed oil was measured. After protracted operation, the detectors have shown an increase of the current and of the background rate. The increase is slower in the chamber with a thicker oil coating.
KW - Ageing
KW - Resistive plate chambers
KW - Streamer
UR - http://www.scopus.com/inward/record.url?scp=0041663414&partnerID=8YFLogxK
U2 - 10.1016/S0168-9002(03)01287-7
DO - 10.1016/S0168-9002(03)01287-7
M3 - Conference article
SN - 0168-9002
VL - 508
SP - 106
EP - 109
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
T2 - Proceedings of the Sixth International Workshop on Resistive P (RPC 2001)
Y2 - 26 November 2001 through 27 November 2001
ER -