Systematic measurement of energy resolution and e/π ratio of a lead/plastic-scintillator sampling calorimeter

T. Suzuki, Y. Fujii, K. Hara, T. Ishizaki, F. Kajino, N. Kanaya, J. Kanzaki, K. Kawagoe, S. Kim, T. Matsui, A. Miyajima, A. Nakagawa, S. Nakazawa, M. Nozaki, T. Ota, K. Sendai, Y. Sugimoto, Y. Sugimoto, H. Takayama, H. TakedaT. Takeshita, S. Tanaka, A. Tanaka, T. Toeda, Y. Yamada

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Abstract

The energy resolution and the e/π ratio of a lead/plastic-scintillator sampling calorimeter were measured for various volume ratios of the lead thickness to the scintillator thickness. For this purpose, a hanging-file-type calorimeter module was constructed in which the thickness of the lead absorber and the plastic-scintillator plates were able to be altered very flexibly. The thicknesses of the lead and the scintillator plates can be changed by a 2 mm step form 4 to 16 mm and from 2 to 6 mm, respectively. We measured energy resolution for electrons and pions with the calorimeter module as a function of the thickness of a lead plate in the energy range 1-4 GeV. The best energy resolution for pions was obtained to be 33.6%/√E with the configuration where the thicknesses of the lead and the scintillator plates were 4 and 2 mm, respectively. The e/π ratio was measured in the energy range 1-4 GeV. The compensation was found to be achieved for the lead thickness of 9.1 ± 0.3 mm in the case of 2 mm-thick scintillator.

Original languageEnglish
Pages (from-to)48-65
Number of pages18
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume432
Issue number1
DOIs
Publication statusPublished - Aug 1 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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