Compton gamma-ray imager using electron tracking gaseous TPC and scintillation camera

被引：0

作者：

Kubo, H ^{[1
]}

Hattori, K ^{[1
]}

Miuchi, K ^{[1
]}

Nagayoshi, T ^{[1
]}

Nishimura, H ^{[1
]}

Okada, Y ^{[1
]}

Orito, R ^{[1
]}

Sekiya, H ^{[1
]}

Takada, A ^{[1
]}

Takeda, A ^{[1
]}

Tanimori, T ^{[1
]}

Ueno, M ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Grad Sch Sci, Sakyo Ku, Kyoto 6068502, Japan

来源：

2004 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-7 | 2004年

关键词：

gamma-ray imaging; gaseous detector; time projection chamber; micro-pattern detector; scintillator;

D O I：

暂无

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

An MeV gamma-ray imaging detector for astrophysics, which enables us to reconstruct gamma-rays event by event by tracking both a Compton recoil electron and a scattered gamma-ray, has been developed. This detection method is powerful for background rejection. The prototype detector is a hybrid of a gaseous time projection chamber (micro-TPC) with 10 x 10 x 8 cm(3) volume with a micro pixel chamber (mu-PIC) readout, and an enclosing NaI(TI) Anger camera with 10 x 10 x 2.5 cm(3) size read by 25 single anode PMTs of 3/4" diameters. The obtained angular resolutions (FWHM) of the prototype detector are 18 degrees and 35 degrees for single photon with 356 keV for an angular resolution measure and a scatter plane deviation, respectively. In order to improve the resolutions the following improvements have been done. At first, an intermediate gas multiplier, conductive capillary plate, has been placed in front of the mu-PIC. Secondly, for improving the position resolution of scattered gamma-rays, an 8x8 array of CsI(TI) pixels with each volume 6 x 6 x 20 mm(3) readout by an 8x8 multi-anodes PMT has been developed.

引用

页码：186 / 189

页数：4

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