Observation of TeV Electrons in Collaboration with NASA

与 NASA 合作观测 TeV 电子

基本信息

批准号：
10041126
负责人：
TORII Shoji
金额：
$ 6.91万
依托单位：
Kanagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A).
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10041126/
关键词：
cosmic ray electrons high energy balloon scintillating fibers calorimeter Japan-US col.universe 気球観測宇宙観測

项目摘要

We have developed a new-type electron detector(BETS) for balloon observations to resolve the acceleration mechanism of electrons in super nova. We have successfully carried out several balloon flights in Japan for measuring the electron energy spectrum from 10 GeV to a few hundred GeV. For measuring the electrons in TeV region, it is necessary to carry out a long term observation as 100 days, and we have tried to make a proposal for the NASA Research Announcement of Ultra Long Duration Ballooning(ULDB) in collaboration with NASA members. We have organized a Japan-US collaboration team for the common proposal, and we had some workshops both in Japan and US. The proposal was not accepted with a grade of "Very Good", and we are trying to be successful in next chance.As other opportunities of ULDB, we have a plan to do a long observation with a Polar Patrol Ballon(PPB) by National Institute of Polar Research in Japan and the trans-continental long duration ballooning between Brazil and Australia by Institute of Space and Astronautical Science(ISAS). Our ISAS members have visited Brazil for the planning. Both of them are very promising for balloon flights within a few years. As a future project, we are proposing a 3-year observation of electrons at Japanese Experiment Module/Exposure Facility on International Space Station. A collaboration plan for this was discussed between us and the US collaborators.We have also carried out developments of instruments at GERN by using the proton beams. As a result, it is proved the 64-anode PMT by Hamamatsu Photonics Co. Ltd has enough capability to detect a minimum ionizing particle for 1mm square scintillating fibers. We have, moreover, done simulation calculations for the detector design and theoretical studies on the relation between high-energy electrons and gamma-ray and for the diffusion characteristics of electrons in the Galaxy.

我们已经开发了一种新型电子检测器（BET），用于气球观测，以解决超级NOVA中电子的加速机制。我们已经成功地在日本进行了几次气球航班，以测量从10 GEV到几百GEV的电子能量谱。为了衡量TEV地区的电子，有必要长期观察100天，我们试图与NASA成员合作就NASA研究公告提出了一项提案。我们已经组织了一个日本 - 美国合作团队，为共同提案组织，我们在日本和我们都有一些研讨会。该提议没有被“非常好”的等级接受，我们正在尝试在下一个机会中取得成功。作为ULDB的其他机会，我们有一个计划与National的Polar Pallol Ballon（PPB）进行长期观察日本极地研究研究所以及太空与宇航科学研究所（ISAS）在巴西和澳大利亚之间的跨大陆长期气球。我们的ISA成员已访问了巴西进行计划。他们俩在几年内都非常有前途的气球航班。作为一个未来的项目，我们提议在国际空间站的日本实验模块/暴露设施上对电子进行3年的观察。我们与美国合作者之间讨论了这一合作计划。我们还使用质子梁在Gern进行了仪器的发展。结果，Hamamatsu Photonics Co. Ltd证明了64个Anode PMT有足够的能力检测1mm平方闪烁纤维的最小电离粒子。此外，我们对检测器设计和理论研究进行了模拟计算，并就高能电子与伽马射线的关系以及电子中电子的扩散特性之间的关系进行了仿真研究。