| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Detectors reconstructing directions of gamma rays are utilized in many fields for physics, diagnostic, and environment. One of them is a Compton camera which consists of two kinds of detectors: one for Compton recoil electrons and the other for scattered gamma rays in order to reconstruct incident gamma rays. The purpose of this study is to develop a simple and robust detector with a common readout for measuring scintillation lights from gas amplification for electrons
and from inorganic scintillators for gamma rays.
A chamber equipped gas electron multipliers(GEMs) for detecting electrons are filled with mixed gas of Ar(90%)+CH4(10%). Dependence of light yield on gas amplification is measured with irradiation of X rays. A positive correlation can be found between them. However, light yields is too small to reconstruct the tracks of electrons, therefore, additional improvement is required.
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