Quantitative aging study with intense irradiation tests for the CMS forward RPCs

H. C. Kim; S. Y. Bahk; B. Hong; S. J. Hong; R. J. Hu; M. H. Jo; C. Kim; Y. J. Kim; Y. U. Kim; K. S. Lee; S. J. Lee; S. K. Nam; S. K. Park; H. B. Rhee; J. T. Rhee; K. S. Sim

doi:10.1016/j.nima.2008.12.140

Quantitative aging study with intense irradiation tests for the CMS forward RPCs

H. C. Kim, S. Y. Bahk, B. Hong, S. J. Hong, R. J. Hu, M. H. Jo, C. Kim, Y. J. Kim, Y. U. Kim, K. S. Lee, S. J. Lee, S. K. Nam, S. K. Park, H. B. Rhee, J. T. Rhee, K. S. Sim

Department of Physics

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

A systematic study with a series of irradiation tests was performed for the forward resistive plate chambers (RPCs) of the Compact Muon Solenoid (CMS) in the Large Hadron Collider (LHC) experiment. Small double-gap RPCs were manufactured and tested by the gamma rays emitted from a 200 mCi¹³⁷Cs source at Korea University and by the fast neutrons provided by the MC50 proton cyclotron at the Korea Institute Radiological and Medical Science (KIRAMS). We found no significant symptom of aging in the performance of the prototype RPCs, as a consequence of the neutron irradiation, whose total equivalent dose was approximately 45 Gy. However, a fast degradation was observed in the RPCs when the gamma signal rates were higher than 3 kHz cm^{- 2}. Furthermore, we observed from the chemical analysis for the RPC electrode that the long-term performance of the RPCs was stable in spite of absorbing the high-level fluorine when the signal rates were lower than 2 kHz cm^{- 2}.

Original language	English
Pages (from-to)	771-774
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	602
Issue number	3
DOIs	https://doi.org/10.1016/j.nima.2008.12.140
Publication status	Published - 2009 May 1

Keywords

Aging effect
Compact Muon Solenoid
Gamma irradiation
Large Hadron Collider
Muon trigger detector
Neutron irradiation

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2008.12.140

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Kim, H. C., Bahk, S. Y., Hong, B., Hong, S. J., Hu, R. J., Jo, M. H., Kim, C., Kim, Y. J., Kim, Y. U., Lee, K. S., Lee, S. J., Nam, S. K., Park, S. K., Rhee, H. B., Rhee, J. T., & Sim, K. S. (2009). Quantitative aging study with intense irradiation tests for the CMS forward RPCs. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 602(3), 771-774. https://doi.org/10.1016/j.nima.2008.12.140

Kim, HC, Bahk, SY, Hong, B, Hong, SJ, Hu, RJ, Jo, MH, Kim, C, Kim, YJ, Kim, YU, Lee, KS, Lee, SJ, Nam, SK, Park, SK, Rhee, HB, Rhee, JT & Sim, KS 2009, 'Quantitative aging study with intense irradiation tests for the CMS forward RPCs', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 602, no. 3, pp. 771-774. https://doi.org/10.1016/j.nima.2008.12.140

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title = "Quantitative aging study with intense irradiation tests for the CMS forward RPCs",

abstract = "A systematic study with a series of irradiation tests was performed for the forward resistive plate chambers (RPCs) of the Compact Muon Solenoid (CMS) in the Large Hadron Collider (LHC) experiment. Small double-gap RPCs were manufactured and tested by the gamma rays emitted from a 200 mCi 137Cs source at Korea University and by the fast neutrons provided by the MC50 proton cyclotron at the Korea Institute Radiological and Medical Science (KIRAMS). We found no significant symptom of aging in the performance of the prototype RPCs, as a consequence of the neutron irradiation, whose total equivalent dose was approximately 45 Gy. However, a fast degradation was observed in the RPCs when the gamma signal rates were higher than 3 kHz cm- 2. Furthermore, we observed from the chemical analysis for the RPC electrode that the long-term performance of the RPCs was stable in spite of absorbing the high-level fluorine when the signal rates were lower than 2 kHz cm- 2.",

keywords = "Aging effect, Compact Muon Solenoid, Gamma irradiation, Large Hadron Collider, Muon trigger detector, Neutron irradiation",

author = "Kim, {H. C.} and Bahk, {S. Y.} and B. Hong and Hong, {S. J.} and Hu, {R. J.} and Jo, {M. H.} and C. Kim and Kim, {Y. J.} and Kim, {Y. U.} and Lee, {K. S.} and Lee, {S. J.} and Nam, {S. K.} and Park, {S. K.} and Rhee, {H. B.} and Rhee, {J. T.} and Sim, {K. S.}",

note = "Funding Information: This work was supported by the Korea Research Foundation Grant funded by Korea Government (MOEHRD, Basic Research Promotion Fund) (KRF-2005-070-C00038) and by the Korea Foundation for International Cooperation of Science and Technology (KICOS) with a grant provided by the Korean Ministry of Education, Science and Technology (MEST) (K20716000001).",

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doi = "10.1016/j.nima.2008.12.140",

language = "English",

volume = "602",

pages = "771--774",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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T1 - Quantitative aging study with intense irradiation tests for the CMS forward RPCs

AU - Kim, H. C.

AU - Bahk, S. Y.

AU - Hong, B.

AU - Hong, S. J.

AU - Hu, R. J.

AU - Jo, M. H.

AU - Kim, C.

AU - Kim, Y. J.

AU - Kim, Y. U.

AU - Lee, K. S.

AU - Lee, S. J.

AU - Nam, S. K.

AU - Park, S. K.

AU - Rhee, H. B.

AU - Rhee, J. T.

AU - Sim, K. S.

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant funded by Korea Government (MOEHRD, Basic Research Promotion Fund) (KRF-2005-070-C00038) and by the Korea Foundation for International Cooperation of Science and Technology (KICOS) with a grant provided by the Korean Ministry of Education, Science and Technology (MEST) (K20716000001).

PY - 2009/5/1

Y1 - 2009/5/1

N2 - A systematic study with a series of irradiation tests was performed for the forward resistive plate chambers (RPCs) of the Compact Muon Solenoid (CMS) in the Large Hadron Collider (LHC) experiment. Small double-gap RPCs were manufactured and tested by the gamma rays emitted from a 200 mCi 137Cs source at Korea University and by the fast neutrons provided by the MC50 proton cyclotron at the Korea Institute Radiological and Medical Science (KIRAMS). We found no significant symptom of aging in the performance of the prototype RPCs, as a consequence of the neutron irradiation, whose total equivalent dose was approximately 45 Gy. However, a fast degradation was observed in the RPCs when the gamma signal rates were higher than 3 kHz cm- 2. Furthermore, we observed from the chemical analysis for the RPC electrode that the long-term performance of the RPCs was stable in spite of absorbing the high-level fluorine when the signal rates were lower than 2 kHz cm- 2.

AB - A systematic study with a series of irradiation tests was performed for the forward resistive plate chambers (RPCs) of the Compact Muon Solenoid (CMS) in the Large Hadron Collider (LHC) experiment. Small double-gap RPCs were manufactured and tested by the gamma rays emitted from a 200 mCi 137Cs source at Korea University and by the fast neutrons provided by the MC50 proton cyclotron at the Korea Institute Radiological and Medical Science (KIRAMS). We found no significant symptom of aging in the performance of the prototype RPCs, as a consequence of the neutron irradiation, whose total equivalent dose was approximately 45 Gy. However, a fast degradation was observed in the RPCs when the gamma signal rates were higher than 3 kHz cm- 2. Furthermore, we observed from the chemical analysis for the RPC electrode that the long-term performance of the RPCs was stable in spite of absorbing the high-level fluorine when the signal rates were lower than 2 kHz cm- 2.

KW - Aging effect

KW - Compact Muon Solenoid

KW - Gamma irradiation

KW - Large Hadron Collider

KW - Muon trigger detector

KW - Neutron irradiation

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JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 3

ER -

Quantitative aging study with intense irradiation tests for the CMS forward RPCs

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Keywords

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