Design, development and performance study of six-gap glass MRPC detectors

Devi, Moon Moon; Mondal, N. K.; Satyanarayana, B.; Shinde, R. R.

doi:10.1140/epjc/s10052-016-4570-2

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…Moreover, the spacers were small circular disks instead of fishing wires. Test results for this detector did not show a working point shift [11].…”

Section: Jinst 14 P01003mentioning

confidence: 81%

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Performance of high rate MRPC with different gas mixtures

Zhang¹,

Han²,

Lyu³

et al. 2019

J. Inst.

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A: A Time Of Flight system (TOF) based on MRPC technology is widely used and plays an important role in modern high energy and nuclear physics experiments. With the increase of the energy and luminosity of the accelerators, many experiments have higher demand for a better resolution TOF detectors working in an high data rate environment, which undoubtedly represents a big challenge for this technology. FAIR-CBM is a typical high rate experiment and the particle rate of its TOF can reach 30 kHz/cm 2 . A new type of MRPC, built with low resistive glass with bulk resistivity of about 10 10 Ohm cm, has been developed. The rate capability of this high rate MRPC can reach 70 kHz/cm 2 . The standard gas mixture for the high rate MRPC used for the FAIR-CBM-TOF is 90% C 2 H 2 F 4 , 5% i-C 4 H 10 and 5% SF 6 . For the high rate MRPC used for the STAR-eTOF the gas mixture contains only two components, namely 95% C 2 H 2 F 4 and 5% i-C 4 H 10 . In order to ensure the long time stability of the high rate MRPC and its use with different gas mixtures, we have studied the performance with different gas mixtures. The first measurements were performed with the standard gas mixture and different gas mixtures were tested by reducing the content of SF 6 . Three high rate MRPCs were tested at the same time for a cross-check, using a cosmic ray test-stand. The result of the test shows that the working point of the high rate MRPC moves toward a lower value of the high voltage by reducing the SF 6 content in the gas mixture. The working point for a chamber efficiency of 95% without SF 6 is about 800 V lower than the one with the standard gas mixture. Other properties such as time resolution, noise rate, dark current and cluster size have also been measured with different gas mixtures. K: Instrumentation and methods for time-of-flight (TOF) spectroscopy; Timing detectors 1Corresponding author.

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“…Moreover, the spacers were small circular disks instead of fishing wires. Test results for this detector did not show a working point shift [11].…”

Section: Jinst 14 P01003mentioning

confidence: 81%

“…The time resolution measured with the standard gas mixture is about 66 ps and it is better than the one measured with no SF 6 whose value is about 74 ps. This is the result of two competing processes [11]. The reduction of SF 6 will promote growth of the avalanche and results in a better time resolution and a lower working point.…”

Section: Jinst 14 P01003mentioning

confidence: 99%

Performance of high rate MRPC with different gas mixtures

Zhang¹,

Han²,

Lyu³

et al. 2019

J. Inst.

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show abstract

“…The calibration is done using the equation 2. Efficiency study of our detector for cosmic muons can be found in [5]. MRPCs have very low efficiency for gammas.…”

Section: Time Resolution For 511 Kev Gammasmentioning

confidence: 99%

Development and characterization of six-gap glass MRPCs and feasibility study of a PET device

Nizam¹,

Satyanarayana²,

Shinde³

et al. 2019

Preprint

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The Multigap Resistive Plate Chambers (MRPCs) provide excellent timing as well as position resolutions at relatively low cost. Therefore, they can be used in medical imaging applications such as PET where precise timing is a crucial parameter of measurement. We have designed and fabricated several six-gap glass MRPCs and extensively studied their performance. In this paper, we describe the fabrication and characterization of the detector, the electronics and the data acquisition system of the setup. We present here the result of our Time Of Flight (TOF) experiment using a radioactive source ( 22 Na) hence to demonstrate their potential applications in medical imaging. We also present the Geant4 based simulation results on the efficiency of our detector as a function of the number of gaps and thickness of the converter material.

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“…These detectors have been tested for their long time operation and we have achieved a time resolution of about 220 ps for cosmic muons. A detailed study of the detector characterization and it's performance can be found in [8]. We attempt to use these detectors for possible application in medical imaging because of their excellent time resolution.…”

Section: Introductionmentioning

confidence: 99%