Speaker
Mr
Kazuki Ueno
(Kyoto University)
Description
In the MeV gamma-ray astronomy, some observation using a Compton or pair-creation telescope has been successful. However, a sensitivity of those in the low and medium energy range from sub to several tens of MeV is worse than those of detectors in the X-ray, GeV, and TeV gamma-ray regions. Therefore a new gamma-ray telescope with better sensitivity in the low and medium energy range is required. We have developed a tracking Compton/pair-creation gamma-ray camera using a gaseous time projection chamber (micro-TPC) and a scintillation camera in order to achieve a sensitivity 10 times better than that of COMPTEL and have an all sky survey. Several prototypes of the gamma-ray detectors with a detection volume of about 10cm×10cm×10cm were developed and their performances with Compton mode in the low energy range were studied. We started to develop a detector with pair-creation mode for the medium energy range. This detector consists of a 10cm×10cm×15cm micro-TPC which obtains tracks of positron and electron, and a 15cm ×15cm scintillation camera which obtains the energy. Using this camera, we had a first beam experiment and succeeded in tracking to positron and electron pair and reconstruction of gamma rays. In this presentation, we will report the fundamental performances of the gamma-ray camera with pair-creation mode, such as angular resolution and detection efficiency.
Summary (Additional text describing your work. Can be pasted here or give an URL to a PDF document):
http://www-cr.scphys.kyoto-u.ac.jp/member/kazuki/VCI/VCI2010_abst_kazuki_ver2.pdf
Primary author
Mr
Kazuki Ueno
(Kyoto University)
Co-authors
Dr
Atsushi Takada
(ISAS/JAXA)
Dr
Hidetoshi Kubo
(Kyoto University)
Dr
Hironobu Nishimura
(Kyoto University)
Dr
Joseph Parker
(Kyoto University)
Dr
Kaori Hattori
(Kyoto University)
Dr
Kentaro Miuchi
(Kyoto University)
Mr
Kiseki Nakamura
(Kyoto University)
Mr
Kojiro Taniue
(Kyoto University)
Mr
Michiaki Takahashi
(Kyoto University)
Mr
Naoki Higashi
(Kyoto University)
Mr
Satoru Iwaki
(Kyoto University)
Dr
Shigeto Kabuki
(Kyoto University)
Mr
Shunsuke Kurosawa
(Kyoto University)
Mr
Tatsuya Sawano
(Kyoto University)
Prof.
Toru Tanimori
(Kyoto University)
