Performance of a large forward resistive plate chamber for the CMS/LHC under high radiation environment

S. H. Ahn, R. Amirikas, S. Y. Bahk, B. Hong, S. J. Hong, K. H. Kim, Y. J. Kim, Y. U. Kim, D. G. Koo, K. S. Lee, S. J. Lee, S. K. Nam, S. Park, J. T. Rhee, S. W. Seo, K. S. Sim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We present the first beam test results of a real size prototype RPC for the endcap region of the CMS, one of large detectors at CERN LHC. The chamber was built with relatively low resistivity bakelite made in Korea and was operated successfully at the Gamma Irradiation Facility at CERN under the highest photon flux available, which corresponds to an effective cluster rate up to about 800 Hz/cm2. The cross-talk effects between strips and sectors have been studied extensively. The high voltage plateau, which satisfies the CMS requirements for efficiency and the number of strips fired per cluster, extends to at least 300 V. The time resolution has been measured to be better than 1.3 ns in this HV plateau region. These results demonstrate that the current design of the device can be used as a muon trigger detector for the CMS forward region.

Original languageEnglish
Pages (from-to)323-330
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - 2001 Aug 21


  • CMS
  • Cross-talk
  • Double gap RPC
  • High radiation environment
  • LHC

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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