The first calibration results of the TriTel three-dimensional silicon detector telescope
- Paper number
IAC-10.A1.4.2
- Author
Dr. Attila Hirn, MTA Centre for Energy Research, Hungary
- Coauthor
Mr. Istvan Apathy, KFKI Atomic Energy Research Institute, Hungary
- Coauthor
Dr. Sándor Deme, Hungarian Academy of Sciences, KFKI Atomic Energy Research Institute, Hungary
- Coauthor
Dr. Tamás Pázmándi, Hungarian Academy of Sciences, KFKI Atomic Energy Research Institute, Hungary
- Coauthor
Mr. Laszlo Bodnar, BL-Electronics, Hungary
- Coauthor
Mr. Antal Csoke, Hungarian Academy of Sciences, KFKI Atomic Energy Research Institute, Hungary
- Coauthor
Mr. Balazs Zabori, Budapest University of Technology and Economics, Hungary
- Coauthor
Mr. Szanto Peter, Hungarian Academy of Sciences, KFKI Atomic Energy Research Institute, Hungary
- Year
2010
- Abstract
During the long-term future manned space missions, such as missions to Moon and Mars, the expected dose to the members of the crew will be comparable to the lifetime dose limits for astronauts. For them, cosmic radiation poses one of the most important long-term risks during such a mission. Even in low Earth orbit, where the astronauts are protected to some extent by the Earth’s geomagnetic field, cosmic radiation might cause an overall flight time limitation to crew members. The dose rates measured on board the International Space Station (ISS) are about two orders of magnitude higher than those from cosmic origin on the Earth’s surface. The radiation environment in space is a mixture of particles of different type and energy and varies considerably with time, altitude and other orbital parameters. In order to successfully implement the “As Low As Reasonably Achievable” (ALARA) principle in the radiation protection of astronauts, performing a wide range of dosimetric measurements is necessary. Since dose equivalent, which characterizes the stochastic biological effects of the radiation, was defined in terms of a LET (linear energy transfer)-dependent quality factor, determining the LET spectrum and the quality factor of cosmic radiation is a must. For this reason, the development of a three dimensional silicon detector telescope (TriTel) with almost uniform sensitivity from each direction got underway in the Hungarian Academy of Sciences KFKI Atomic Energy Research Institute several years ago. The instrument comprising three mutually orthogonal, fully depleted PIPS detector pairs will be capable of providing the LET spectrum and the average quality factor of the radiation as well as the absorbed dose and dose equivalent. Different versions of TriTel will perform measurements in the coming years on board the European Columbus module and the Russian segment of the ISS as well as on board a European student satellite (ESEO) in low Earth orbit. The development of the 3D telescope system moved into its final phase. In the present paper the first results of calibration of the TriTel system with alpha particles, electrons (beta particles and monoenergetic electrons) and gamma sources are presented. The results are also compared with the output of the simulations. The major milestones and objectives to be achieved until launch of the system are also addressed.
- Abstract document
- Manuscript document
(absent)