We have been developing an Electron-Tracking Compton Camera (ETCC) as a next generation MeV gammaray detector, consisting of a gaseous electron tracker which measures the three-dimensional track and the energy of the Compton-recoil electron, and pixel scintillation arrays which measure the absorption point and the energy of the scattered gamma ray. As the first step toward a future all-sky survey with a planned sensitivity of one order magnitude higher than COMPTEL, we successfully observed the diffuse cosmic and atmospheric gamma rays at balloon altitudes with a small ETCC in the Sub-MeV gamma-ray Imaging Loaded-on-balloon Experiment I (SMILE-I). Building on the success of the SMILE-I ETCC, we are developing a large size ETCC for the next flight to observe celestial objects in the sub-MeV/MeV region. This larger detector is expected to achieve a sensitivity comparable to COMPTEL.
|出版ステータス||Published - 2011|
|イベント||32nd International Cosmic Ray Conference, ICRC 2011 - Beijing, China|
継続期間: 2011 8月 11 → 2011 8月 18
|Other||32nd International Cosmic Ray Conference, ICRC 2011|
|Period||11/8/11 → 11/8/18|
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