Space Shuttle drops down the SAA doses on ISS

Dachev, Tsvetan; Semkova, Jordanka; Tomov, B.; Matviichuk, Yu.; Dimitrov, P.; Koleva, R.; Malchev,; Reitz, G.; Horneck, G.; Angelis, G. De; Häder, Donat-Peter; Petrov, V. M.; Shurshakov, Vyacheslav; Benghin, Victor; Chernykh, I. V.; Drobyshev, Sergey; Bankov, N.

doi:10.1016/j.asr.2011.01.034

Cited by 20 publications

(8 citation statements)

References 24 publications

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“…Further on, the local shielding for detectors positioned inside the station changes due to the rotation of the ISS (as mentioned Columbus goes from forward right to backward left) (Drobyshev & Benghin 2011). The mass of the shuttle (around 78 tons) increases the local shielding for detectors close to the shuttle (Dachev et al 2011), which is also the case for the DOSTEL instruments in Columbus. Figure 11 provides the absorbed dose rates for the SAA measured by the DOSTEL-1 (Fig.…”

Section: Iss Attitude Influence On the Absorbed Dose Rate -The Shuttlmentioning

confidence: 96%

DOSIS & DOSIS 3D: radiation measurements with the DOSTEL instruments onboard the Columbus Laboratory of the ISS in the years 2009–2016

Berger

Burmeister

Matthiä

et al. 2017

J. Space Weather Space Clim.

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The natural radiation environment in Low Earth Orbit (LEO) differs significantly in composition and energy from that found on Earth. The space radiation field consists of high energetic protons and heavier ions from Galactic Cosmic Radiation (GCR), as well as of protons and electrons trapped in the Earth's radiation belts (Van Allen belts). Protons and some heavier particles ejected in occasional Solar Particle Events (SPEs) might in addition contribute to the radiation exposure in LEO. All sources of radiation are modulated by the solar cycle. During solar maximum conditions SPEs occur more frequently with higher particle intensities. Since the radiation exposure in LEO exceeds exposure limits for radiation workers on Earth, the radiation exposure in space has been recognized as a main health concern for humans in space missions from the beginning of the space age on. Monitoring of the radiation environment is therefore an inevitable task in human spaceflight. Since mission profiles are always different and each spacecraft provides different shielding distributions, modifying the radiation environment measurements needs to be done for each mission. The experiments ''Dose Distribution within the ISS (DOSIS)'' (2009-2011) and ''Dose Distribution within the ISS 3D (DOSIS 3D)'' (2012-onwards) onboard the Columbus Laboratory of the International Space Station (ISS) use a detector suite consisting of two silicon detector telescopes (DOSimetry TELescope = DOSTEL) and passive radiation detector packages (PDP) and are designed for the determination of the temporal and spatial variation of the radiation environment. With the DOSTEL instruments' changes of the radiation composition and the related exposure levels in dependence of the solar cycle, the altitude of the ISS and the influence of attitude changes of the ISS during Space Shuttle dockings inside the Columbus Laboratory have been monitored. The absorbed doses measured at the end of May 2016 reached up to 286 lGy/day with dose equivalent values of 647 lSv/day.

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Section: Iss Attitude Influence On the Absorbed Dose Rate -The Shuttlmentioning

confidence: 96%

DOSIS & DOSIS 3D: radiation measurements with the DOSTEL instruments onboard the Columbus Laboratory of the ISS in the years 2009–2016

Berger

Burmeister

Matthiä

et al. 2017

J. Space Weather Space Clim.

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“…4 is that during the five space shuttle docking times the SAA maximal doses fall by 600 lGy h -1 and reach an average level of 400-500 lGy h -1 for the STS-123 and STS-124 missions. For STS-126, STS-119, and STS-127, the drop was also 600 lGy h -1 from an average level of 1400 lGy h -1 (Dachev et al, 2011a). The analysis of the daily average SAA dose rate for the studied period shows that before 21 June 2008 it was around 300 lGy d .…”

Section: Saa Daily Dosesmentioning

confidence: 99%

Time Profile of Cosmic Radiation Exposure During the EXPOSE-E Mission: The R3DE Instrument

Dachev

Horneck

Häder³

et al. 2012

Astrobiology

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The aim of this paper is to present the time profile of cosmic radiation exposure obtained by the Radiation Risk Radiometer-Dosimeter during the EXPOSE-E mission in the European Technology Exposure Facility on the International Space Station's Columbus module. Another aim is to make the obtained results available to other EXPOSE-E teams for use in their data analysis. Radiation Risk Radiometer-Dosimeter is a low-mass and small-dimension automatic device that measures solar radiation in four channels and cosmic ionizing radiation as well. The main results of the present study include the following: (1) three different radiation sources were detected and quantified-galactic cosmic rays (GCR), energetic protons from the South Atlantic Anomaly (SAA) region of the inner radiation belt, and energetic electrons from the outer radiation belt (ORB); (2) . The analysis of the UV and temperature data is a subject of another article (Schuster et al., 2012).

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“…An instrumental solution was proposed in Dachev et al (2011e), where the possible hardware and software improvements for a new Liulin type dosimeter were outlined. New instruments will be able, on the basis of the analysis of the shape of the deposited energy spectrum and the value of the dose to flux ratio, to distinguish among the different types of radiation sources in the ISS radiation environment: GCR, IRB protons and outer radiation belt electrons.…”

Section: R3dr Instrument Resultsmentioning

confidence: 99%

Overview of the Liulin type instruments for space radiation measurement and their scientific results

Dachev

Semkova

Tomov

et al. 2015

Life Sciences in Space Research

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Space Shuttle drops down the SAA doses on ISS

Cited by 20 publications

References 24 publications

DOSIS & DOSIS 3D: radiation measurements with the DOSTEL instruments onboard the Columbus Laboratory of the ISS in the years 2009–2016

DOSIS & DOSIS 3D: radiation measurements with the DOSTEL instruments onboard the Columbus Laboratory of the ISS in the years 2009–2016

Time Profile of Cosmic Radiation Exposure During the EXPOSE-E Mission: The R3DE Instrument

Overview of the Liulin type instruments for space radiation measurement and their scientific results

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