Response of pure CsI to charged pions in the intermediate energy region

Hirohito Yamazaki, T. Yorita, H. Yuki, J. Kasagi, S. Kato, H. Shimizu, H. Y. Yoshida, K. Maruyama, H. Okuno, T. Sawamoto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The response of a scintillation detector array consisting of 7 pure CsI crystals with a thickness of 13.5 radiation lengths has been measured to electrons, positrons and charged pions with momenta ranging from 250 to 1000 MeV/c. For electrons and positrons the detector provides a very linear response to the incident energy. High energy charged pions make a peak at around 150 MeV corresponding to the ionization energy loss. In addition to the peak, comparable yields which are caused by nuclear reactions are distributed up to the maximum available energy and form a broad bump. The shape of the broad bump for positive pions is different from that for negative pions with the same momentum. A simulation with a GEANT program cannot reproduce the shape of the broad bump.

Original languageEnglish
Pages (from-to)427-434
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume391
Issue number3
DOIs
Publication statusPublished - 1997 Jun 11

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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