TY - JOUR
T1 - Gamma-ray imaging with a large micro-TPC and a scintillation camera
AU - Hattori, K.
AU - Kabuki, S.
AU - Kubo, H.
AU - Kurosawa, S.
AU - Miuchi, K.
AU - Nagayoshi, T.
AU - Nishimura, H.
AU - Okada, Y.
AU - Orito, R.
AU - Sekiya, H.
AU - Takada, A.
AU - Takeda, A.
AU - Tanimori, T.
AU - Ueno, K.
PY - 2007/10/21
Y1 - 2007/10/21
N2 - We report on the development of a large Compton camera with the full reconstruction of the Compton process based on a prototype. This camera consists of two kinds of detectors. One is a gaseous time projection chamber (micro-TPC) for measuring the energy and the track of a Compton recoil electron. The micro-TPC is based on a μ-PIC and a GEM, which are micro-pattern gas detectors (MPGDs). The size of the micro-TPC was 10 cm × 10 cm × 8 cm in the case of the prototype, and we enlarged it to 23 cm × 28 cm × 15 cm. The other detector part is a NaI (Tl) Anger camera for measuring the scattered gamma-ray. With these informations, we can completely reconstruct a Compton event, and determine the direction of the incident gamma-ray, event by event. We succeeded in reconstructing events of incident 662 keV gamma-rays. The measured angular resolutions of the "angular resolution measure" (ARM) and the "scatter plane deviation" (SPD) were 9 . 3{ring operator} and 158{ring operator} (FWHM), respectively.
AB - We report on the development of a large Compton camera with the full reconstruction of the Compton process based on a prototype. This camera consists of two kinds of detectors. One is a gaseous time projection chamber (micro-TPC) for measuring the energy and the track of a Compton recoil electron. The micro-TPC is based on a μ-PIC and a GEM, which are micro-pattern gas detectors (MPGDs). The size of the micro-TPC was 10 cm × 10 cm × 8 cm in the case of the prototype, and we enlarged it to 23 cm × 28 cm × 15 cm. The other detector part is a NaI (Tl) Anger camera for measuring the scattered gamma-ray. With these informations, we can completely reconstruct a Compton event, and determine the direction of the incident gamma-ray, event by event. We succeeded in reconstructing events of incident 662 keV gamma-rays. The measured angular resolutions of the "angular resolution measure" (ARM) and the "scatter plane deviation" (SPD) were 9 . 3{ring operator} and 158{ring operator} (FWHM), respectively.
KW - Compton imaging
KW - MeV gamma-ray imaging
KW - Time projection chamber
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U2 - 10.1016/j.nima.2007.08.039
DO - 10.1016/j.nima.2007.08.039
M3 - Article
AN - SCOPUS:35348835981
SN - 0168-9002
VL - 581
SP - 517
EP - 521
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2 SPEC. ISS.
ER -