The Observation of Diffuse Cosmic and Atmospheric Gamma Rays with an Electron-Tracking Compton Camera Loaded on a Balloon
| Autor: | Sigeto Kabuki, Kentaro Miuchi, K. Ueno, Toru Tanimori, Shunsuke Kurosawa, Atsushi Takada, Ken N.Ichi Tsuchiya, Hironobu Nishimura, Naoki Nonaka, Satoru Iwaki, C. Ida, Eiichi Mizuta, Kaori Hattori, Hidetoshi Kubo |
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| Rok vydání: | 2009 |
| Předmět: |
Physics
Photon COSMIC cancer database business.industry Astrophysics::High Energy Astrophysical Phenomena Detector Astrophysics::Instrumentation and Methods for Astrophysics Gamma ray General Physics and Astronomy Astronomy Cosmic ray Electron Tracking (particle physics) law.invention Telescope Optics law business |
| Zdroj: | Journal of the Physical Society of Japan. 78:161-164 |
| ISSN: | 1347-4073 0031-9015 |
| Popis: | As next-generation MeV gamma-ray telescope, we have developed an electron-tracking Compton camera (ETCC) that consists of a gaseous tracker and an absorber. The ETCC obtains the energy and direction of both a scattered gamma ray and a recoil electron, and determines both the energy and direction of an incident gamma ray, photon by photon. Furthermore, this camera features powerful background rejection based on Compton-scattering kinematics. To prepare for future spacecraft loading, we planned the balloon experiment, “Sub-MeV gamma-ray Imaging Loaded-on-balloon Experiment” (SMILE). As the first step in SMILE, we demonstrated gamma-ray detection using our camera by observing diffuse cosmic gamma rays and secondary gamma rays generated by collisions between high-energy cosmic rays and nuclei in the air. On September 1, 2006, our detector was loaded on a balloon and launched from Sanriku Balloon Center, ISAS/JAXA. The balloon realized level flight at an altitude of about 35 km during a live time of 3.0 h. We ... |
| Databáze: | OpenAIRE |
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