TY - JOUR
T1 - Trigger rate dependence and gas mixture of MRPC for the LEPS2 experiment at SPring-8
AU - Chia-Yu, Hsieh
AU - Tomida, Natsuki
AU - Ohnishi, Hiroaki
AU - Niiyama, Masayuki
AU - Wen-Chen, Chang
AU - Tsung-Tai, Lin Willis
PY - 2012
Y1 - 2012
N2 - In order to separate K and π with momenta up to 1.1 GeV/c using Time-of-Flight (TOF) over a distance of about 100 cm in the magnet, we will use Multi-Gap Resistive Plate Chamber (MRPC) due to the need of large area, high efficiency and overall time resolution in the range of 50-100 ps. We built a 260 μm × 10 gaps MRPC with an active area of 10 × 50 cm2 and a pad size of 2.5 × 40 cm2. We studied the trigger rate dependence and the gas mixture of this MRPC. It was found that high enough voltage is necessary to achieve a good time resolution and high efficiency at large trigger rates. The gas mixture composed of R134a : SF6 : Iso-Butane at 90% : 5% : 5% is our optimized choice.
AB - In order to separate K and π with momenta up to 1.1 GeV/c using Time-of-Flight (TOF) over a distance of about 100 cm in the magnet, we will use Multi-Gap Resistive Plate Chamber (MRPC) due to the need of large area, high efficiency and overall time resolution in the range of 50-100 ps. We built a 260 μm × 10 gaps MRPC with an active area of 10 × 50 cm2 and a pad size of 2.5 × 40 cm2. We studied the trigger rate dependence and the gas mixture of this MRPC. It was found that high enough voltage is necessary to achieve a good time resolution and high efficiency at large trigger rates. The gas mixture composed of R134a : SF6 : Iso-Butane at 90% : 5% : 5% is our optimized choice.
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M3 - Conference article
AN - SCOPUS:85041532779
VL - 2012-February
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
M1 - 061
T2 - 11th Workshop on Resistive Plate Chambers and Related Detectors, RPC 2012
Y2 - 5 February 2012 through 10 February 2012
ER -