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    Radiat Prot Dosimetry. 2006;120(1-4):421-6. Epub 2006 Jun 18.

    MIDN: a spacecraft microdosimeter mission.

    Source

    United States Naval Academy, Annapolis, MD 21402, USA.

    Abstract

    MIDN (MIcroDosimetry iNstrument) is a payload on the MidSTAR-I spacecraft (Midshipman Space Technology Applications Research) under development at the United States Naval Academy. MIDN is a solid-state system being designed and constructed to measure microdosimetric spectra to determine radiation quality factors for space environments. Radiation is a critical threat to the health of astronauts and to the success of missions in low-Earth orbit and space exploration. The system will consist of three separate sensors, one external to the spacecraft, one internal and one embedded in polyethylene. Design goals are mass <3 kg and power <2 W. The MidSTAR-I mission in 2006 will provide an opportunity to evaluate a preliminary version of this system. Its low power and mass makes it useful for the International Space Station and manned and unmanned interplanetary missions as a real-time system to assess and alert astronauts to enhanced radiation environments.

    PMID:
    16785245
    [PubMed - indexed for MEDLINE]

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