Abstract
Planners of a crewed mission to the Moon should have confidence in reliability of radiation dose estimations. In the absence of proton events during solar minimum the absorbed dose to the crew crossing the magnetosphere will be contributed primarily by protons and electrons of the inner and outer radiation belts of Earth, respectively. It is necessary to examine whether the existing electron forecast model is good enough for this purpose. The paper describes our efforts to model the radiation environment of RADOM onboard Chandrayaan 1 launched to the Moon on 22.10.2008, including the vehicle design in order to assess its shielding function. The geomagnetic field parameters were reproduced with the use of model А2000 developed at the Nuclear Physics Institute (Moscow State University). The absorbed doses were calculated with the help of standard Canopus-80 tools. Comparison of calculated and experimental data showed a good agreement for the period of solar minimum and quiet geomagnetic conditions.
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