Further Analysis of the Space Shuttle Effects on the ISS SAA Doses
- Paper number
IAC-11,A1,4,2,x9918
- Coauthor
Prof. Tsvetan Dachev, Space Research and Technology Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Dr. Gianni De Angelis, SERCO S.p.A, Italy
- Coauthor
Dr. Borislav Tomov, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Mr. Plamen Dimitrov, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Dr. Yury Matviichuk, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Dr. Jordanka Semkova, Space Research and Technologies Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Mr. Nikolay Bankov, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria
- Coauthor
Dr. Guenther Reitz, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Germany
- Coauthor
Dr. Gerda Horneck, Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), Germany
- Coauthor
Prof. Donat-Peter Häder, Friedrich-Alexander-Universität, Institut für Botanik und Pharmazeutische Biologie, Germany
- Coauthor
Dr. Victor Benghin, State Scientific Center of Russian Federation, Institute of Biomedical Problems, Russian Academy of Sciences, Russia
- Year
2011
- Abstract
The data from the R3DE instrument outside the ISS at the European Technological Expose Facility (EuTEF) on the ESA Columbus module shows that the docking of Space Shuttle with ISS decrease the International Space Station (ISS) South-Atlantic Anomaly (SAA) dose rates from about 1500 $\mu$Gy/h down to 600-700 $\mu$Gy/h or by factor of 2. The new dose rate data in March 2009 from another Bulgarian build instrument (R3DR) outside Russian “Zvezda” module shows that: 1) SAA R3DR instrument dose rates before the Space Shuttle docking are higher (2500 $\mu$Gy/h) than R3DE data; 2) The relative decrease after the shuttle docking is only by factor of 1.25. These differences are explained by the smaller shielding of R3DR from the body of ISS and with larger distance of it from the body of Space Shuttle. Very similar data, but with smaller dose rates shows third Bulgarian build instrument (Liulin-5) inside Russian “Pirs” module. The analysis of the ascending/descending SAA dose rate maximums of three instruments shows that effect can be simple explained with the additional shielding against the SAA 30 to 150 MeV protons, provided by the 78 tons Shuttle to the instruments and by changing of the ISS 3D mass distribution when the ISS rotates.
- Abstract document
- Manuscript document
IAC-11,A1,4,2,x9918.pdf (🔒 authorized access only).
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