Development of position-sensitive Tissue Equivalent Proportional Chamber for space dosimetry

S. Sasaki, K. Saito, H. Tawara, T. Nagayoshi, Y. Fujita, T. Doke, K. Terasawa, K. Miuchi, H. Matsumoto, Y. Uchihori

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Radiation effects on human body are evaluated using dose equivalent H, defined as the product of the absorbed dose and the quality factor given as a function of LET. In space, there exist many kinds of radiations, such as galactic cosmic rays and geomagnetic trapped particles, where charged particles and neutrons are the main components contributing to radiation dose in space. Since LET of these radiations widely distributes, it is essential to measure directly LET for evaluation of H in space. The Tissue Equivalent Proportional Counter (TEPC) has been used as a standard space dosimeter, which is a simple gas counter made of tissue equivalent materials. In TEPC, since no position information is given, a lineal energy is measured instead of LET. Obviously the lineal energy does not represent LET accurately. The dose obtained using TEPC is reported to be inconsistent with those measured with real LET spectrometers. We started to develop a new dosimeter named as Position Sensitive Tissue Equivalent Chamber (PS-TEPC), which is based on a time projection chamber using Micro Pixel Chamber (μ-PIC) as two-dimensional position-sensitive detector. In this study, we aim to demonstrate feasibility of PS-TEPC and to complete a prototype of PS-TEPC usable in space. The performance was tested by using the heavy ion beams to examine its abilities of 3D-tracking and energy measurement.

本文言語English
ホスト出版物のタイトル2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
ページ1826-1829
ページ数4
DOI
出版ステータスPublished - 2007 12 1
外部発表はい
イベント2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI, United States
継続期間: 2007 10 272007 11 3

出版物シリーズ

名前IEEE Nuclear Science Symposium Conference Record
3
ISSN(印刷版)1095-7863

Other

Other2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
CountryUnited States
CityHonolulu, HI
Period07/10/2707/11/3

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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