ROSCOSMOS - Matryoshka-R Mission patch / JAXA - KIBO Area PADLES patch.
May 17, 2014
Cosmonauts of the Russian segment of the International Space Station continues to work on space experiment "Matryoshka-R". One of the main objectives of the experiment is to develop new methods and tools for radiation safety service manned spaceflight SSC RF-IBMP RAS designed for maximum precision in estimating the radiation load on the body when the astronaut space flight.
Study on the distribution of radiation dose in the body of the astronaut performed in 2011 in the framework of the joint Russian-Japanese experiment "Matryoshka-PADLES". The experiment is conducted in the Japanese module Kibo in various phases of the cycle of solar activity using passive integrating detectors equipped with spherical tissue-equivalent phantom Russian "Matryoshka -R", mimicking the body of the astronaut, and a set of 17 Japanese passive detectors "PADLES", placed at various points in the module.
PADLES passive detectors
Phantom Ball is an innovative development of Russia, which has no analogues in the world. Inside and on the surface of the phantom taken more than 500 passive detectors. Radiation doses to critical organs crew member is defined by a ball phantom, so the presence of a large number of detectors will maximize accurately formulate the requirements for radiation control volume on the surface of the body of the astronaut. Phantom mass is 32 kg and a diameter of 35 cm.
Phantom Ball
Research on board the spacecraft with tissue-equivalent phantoms are of great interest. Currently under development modified sets of active and passive detectors for radiation safety of future missions to the ISS.
Results of the experiment is particularly important in view of the considerable length of future missions, involving the same astronaut in several expeditions and projects planned manned mission to the Moon and Mars.
Cosmonaut Oleg Artemyev working on "Matryoshka-R" experiment
Originally ball phantom was installed in the ISS Service Module, then the modules SB-1, MIM-2, MIM-1 of the Russian segment of the ISS, and now, at the request of the Japanese experts - Module " Kibo " to conduct a joint experiment "Matryoshka-PADLES". The total duration of exposure detectors currently stands at more than 2,000 for 9 days in the experimental sessions.
Total scheduled for 10 sessions of the experiment "PADLES" detectors, successfully passed 5, is currently being completed second. Also scheduled 3 sessions with a ball phantom, one of which has already been completed. The second session is completed in September this year, and a third is planned for the period up to 2016.
Cosmonaut Sergei Ryazansky manipulates a Phantom Ball
At the moment we can say that a spherical tissue-equivalent anthropomorphic phantoms and proven applicability for measurements in space flight doses in critical organs, as well as the effective dose of ionizing cosmic radiation. Such phantoms witnesses may be recommended for continuous monitoring of dose distribution in the body of astronauts for future space missions. The procedure for measuring doses of cosmic radiation, implemented in Japan "PADLES" detectors, successfully mastered and will be implemented in practice manned flights as staff resources in the implementation of individual monitoring Russian cosmonauts to the ISS, as well as looking for crews of transport ships of a new generation.
ROSCOSMOS Press Release: http://www.federalspace.ru/20585/
Images, Text, Credits: Roscosmos press service / Translation: Orbiter.ch Aerospace.
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