Trigger rate dependence and gas mixture of MRPC for the LEPS2 experiment at SPring-8

Hsieh Chia-Yu; Natsuki Tomida; Hiroaki Ohnishi; Masayuki Niiyama; Chang Wen-Chen; Lin Willis Tsung-Tai

Trigger rate dependence and gas mixture of MRPC for the LEPS2 experiment at SPring-8

Hsieh Chia-Yu, Natsuki Tomida, Hiroaki Ohnishi, Masayuki Niiyama, Chang Wen-Chen, Lin Willis Tsung-Tai

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Article number	061
Journal	Proceedings of Science
Volume	2012-February
State	Published - 2012
Event	11th Workshop on Resistive Plate Chambers and Related Detectors, RPC 2012 - Rome, Italy Duration: 5 Feb 2012 → 10 Feb 2012

Cite this

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title = "Trigger rate dependence and gas mixture of MRPC for the LEPS2 experiment at SPring-8",

abstract = "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.",

author = "Hsieh Chia-Yu and Natsuki Tomida and Hiroaki Ohnishi and Masayuki Niiyama and Chang Wen-Chen and Tsung-Tai, {Lin Willis}",

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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 - 會議論文

AN - SCOPUS:85041532779

SN - 1824-8039

VL - 2012-February

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 061

T2 - 11th Workshop on Resistive Plate Chambers and Related Detectors, RPC 2012

Y2 - 5 February 2012 through 10 February 2012

ER -

Trigger rate dependence and gas mixture of MRPC for the LEPS2 experiment at SPring-8

Abstract

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