TlBr capacitive frisch grid detectors

Keitaro Hitomi, Tsutomu Tada, Toshiyuki Onodera, Seong Yun Kim, Yuanlai Xu, Tadayoshi Shoji, Keizo Ishii

研究成果: Article査読

8 被引用数 (Scopus)


Capacitive Frisch grid detectors with the dimensions of 2 mm\,\times\,2 mm\,\times\,4.4 mm were fabricated from TlBr crystals grown by the travelling molten zone method using zone-purified materials. Spectroscopic performance of the detectors was evaluated at room temperature (24\circ C), {-} 5\circ C and {-} 20\circ C. The TlBr detector exhibited an energy resolution of 1.6% FWHM at 662 keV with a peak-to-Compton ratio of 8.7 with the depth correction at room temperature. Improvement of the detector performance was achieved by cooling the detector-preamplifier system. The energy resolutions of 3.4%, 1.5%, 1.0% and 0.9% FWHM at 122 keV, 356 keV, 662 keV and 1332 keV, respectively, were recorded with the TlBr detector without the depth correction at {-} 5\circ C. An energy resolution of 0.9% FWHM at 662 keV with a peak-to-Compton ratio of 18.2 was obtained from the TlBr detector with the depth correction at {-}20\circC. An upper limit for the Fano factor of TlBr was estimated to be 0.43 at {-}20\circC.

ジャーナルIEEE Transactions on Nuclear Science
出版ステータスPublished - 2013

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 電子工学および電気工学


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