11/12/2015NASA-JSC and DIAS1 Study of Sensitivity Fading of CR-39 Detectors during Long Time Exposure D. Zhou a, b, D. O’Sullivan c, E. Semones a, N. Zapp.

Slides:

Advertisements

Similar presentations

RADIOPROTEZIONE DEGLI ASTRONAUTI DA RADIAZIONE COSMICA

Advertisements

BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE INSTITUT D’AERONOMIE SPATIALE DE BELGIQUE BELGIAN INSTITUTE FOR SPACE AERONOMY BELGISCH INSTITUUT VOOR RUIMTE-AERONOMIE.

New results of radiation environment investigation by Liulin-5 experiment in the human phantom aboard the International Space Station.

Short-range, high-LET recoil tracks in CR-39 plastic nuclear track detector E. R. Benton 1, C. E. Johnson 1, J. DeWitt 1, N. Yasuda 2, and E. V. Benton.

DOSE SPECTRA FROM ENERGETIC PARTICLES AND NEUTRONS (DoSEN) S. Smith 1, N. A. Schwadron 1 C. Bancroft 1, P. Bloser 1, J. Legere 1, J. Ryan 1, H. E. Spence.

Radiation Environment in a Human Phantom aboard the International Space Station during the Minimum of 23-rd Solar Cycle Semkova J. 1, Koleva R. 1, Maltchev.

18-OCT-2005 Lyndon B. Johnson Space Center space radiation analysis group 1 Operational Aspects of Space Radiation Analysis October 18, 2005 Mark Weyland.

The Results of Alpha Magnetic Spectrometer (AMS01) Experiment in Space Behcet Alpat I.N.F.N. Perugia TAUP 2001 Laboratori Nazionali del Gran Sasso, Italy.

Impact of the Particle Environment on LYRA Data M. Dominique, A. BenMoussa, M.Kruglanski, L. Dolla, I. Dammasch, M. Kretzschmar PROBA2 workshop, May 04.

June 21, 2011 Space Weather Enterprise Forum Human Safety and Response Preparedness John R. Allen, PhD NASA Headquarters Space Operations Mission Directorate.

Space Radiation Honglu Wu, Ph.D. NASA Johnson Space Center.

Space Radiation Operations Status, Methods and Needs Neal Zapp, NASA/JSC SRAG.

Performance of AMS-02 on the International Space Station DESY Theory Workshop, Hamburg Melanie Heil Supported by the Carl-Zeiss Foundation.

Danish Space Research Institute Danish Small Satellite Programme FH Space_Environment.ppt Slide # 1 Flemming Hansen MScEE, PhD Technology Manager.

Space radiation dosimetry and the fluorescent nuclear track detector Nakahiro Yasuda National Institute of Radiological Sciences.

The Number and Reaction Multiplicities of GCR Nuclei and Delta-rays Passing through a Cell Nucleus on a Mars Mission Xiaodong Hu 1, Premkumar Saganti 2,

Geant4 Context from the point of view of The Space Environments and Effects Analysis Section E.J. Daly.

GCR Methods in Radiation Transport F.A. Cucinotta And M.Y. Kim NASA Johnson Space Center.

EFFECTS of the TERRESTRIAL MAGNETOSPHERE on RADIATION HAZARD on MOON MISSIONS R. Koleva, B. Tomov, T. Dachev, Yu. Matviichuk, Pl. Dimitrov, Space and Solar-Terrestrial.

Energy, matter and radiation (much more interesting than it looks like) (well not really, but shut up and take notes)

Alexander Brandl ERHS 630 Exposure and Dose Environmental and Radiological Health Sciences.

UTILIZING SPENVIS FOR EARTH ORBIT ENVIRONMENTS ASSESSMENTS: RADIATION EXPOSURES, SEE, and SPACECRAFT CHARGING Brandon Reddell and Bill Atwell THE BOEING.

Radiation environment investigation results obtained with Liulin-5 experiment in the human phantom of Matroshka-R project aboard the International Space.

Space Radiation Protection, Space Weather and Exploration 25 April Kerry Lee 2 J. Barzilla, 2 T. Bevill, 2 A. Dunegan, 1 D. Fry, 2 R. Gaza, 2 A.S.

Space Radiation Analysis Group Operational Tools 19 April Kerry Lee 1 A. Bahadori, 2 J. Barzilla, 2 T. Bevill, 1 D. Fry, 2 R. Gaza, 2 A.S. Johnson,

Radiation conditions during the GAMMA-400 observations:

NEEP 541 Radiation Interactions Fall 2003 Jake Blanchard.

Higher Physics – Unit 3 3.5Dosimetry and Safety. Activity of Radiation The activity of a radioactive source is the average number of nuclei decaying per.

To the use of the linear energy spectrometer based on track etch detectors in radiotherapy proton beams, correlation with data measured by means of thermoluminescent.

New results for Radiation Effects on the Human Health Obtained during the COST-724 Action F. Spurný a, Ts. Dachev b, a Nuclear Physics Institute, Czech.

P. Scampoli - 24th ICNTS Bologna, September 4,

NASA/NSTA Web Seminar: Radiation – Can’t Live With It, Can’t Live Without It LIVE INTERACTIVE YOUR.

System for Radiation Environment characterization (fluxes, doses, dose equivalents at Earth, Moon and Mars) on hourly thru yearly time frame Example: Snapshots.

Space Radiation and Fox Satellites 2011 Space Symposium AMSAT Fox.

From Nymik- COSPAR. SPE estimates from Artic Ice- Core Nitrate Samples.

GCR Primaries (See Wilson et al. poster for latest CRaTER proton albedo map) RELATIVE CONTRIBUTIONS OF GALACTIC COSMIC RAYS AND LUNAR PARTICLE ALBEDO TO.

The PLANETOCOSMICS Geant4 application L. Desorgher Physikalisches Institut, University of Bern.

Cosmic-Ray Induced Neutrons: Recent Results from the Atmospheric Ionizing Radiation Measurements Aboard an ER-2 Airplane P. Goldhagen 1, J.M. Clem 2, J.W.

C. J.Joyce 1, J. B. Blake 2, A. W. Case 3, M. Golightly 1, J. C. Kasper 3, J. Mazur 2, N. A. Schwadron 1, E. Semones 4, S. Smith 1, H. E. Spence 1, L.

Spatial distribution and high LET component of absorbed dose measured by passive radiation monitors in ISS Russian segment N. Yasuda, H. Kawashima, M.

Dose Predictions for Moon Astronauts Image Source: Nicholas Bachmann, Ian Rittersdorf Department of Nuclear Engineering and Radiological.

Space Environment SSE-120 Please type in your questions and raise your hand so we can answer it during class.

Radiation on Planetary Surfaces M. S. Clowdsley 1, G. DeAngelis 2, J. W. Wilson 1, F. F. Badavi 3, and R. C. Singleterry 1 1 NASA Langley Research Center,

Space Radiation Health Effects of Astronauts in Explorative Missions

Radiation Quantities and Units Chapter 3 Sherer. n Somatic effects n Long term somatic n Genetic effects n Box 3-1.

Assessment of radiation shielding materials for protection of space crews using CR-39 plastic nuclear track detector J. M. DeWitt 1, E. R. Benton 1, Y.

The Use of Accelerator Beams for Calibration and Characterization of Solid State Nuclear Track Detectors Eric Benton Department of Physics Oklahoma State.

FLUKA Meeting--INFN-Milan April 28, 2009 – L. Pinsky Adding Dose Equivalent Scoring and Recent Efforts in the Development of a TimePix-Based Active Dosimeter.

Trapped radiation models

1 Space technology course : Space Radiation Environment and its Effects on Spacecraft Components and Systems Space radiation environment Space Radiation.

Russian Aviation and Space Agency Institute for Space Research NASA 2001 Mars Odyssey page 1 Workshop HEND Radiation environment on Odyssey and.

Daniel Matthiä(1)‏, Bernd Heber(2), Matthias Meier(1),

End-to-End Overview of Hazardous Radiation Len Fisk University of Michigan.

Solar Storm Radiation Model (SStoRM) Prepared by: Joshua Lande–Marlboro College, VT and Ron Turner–ANSER, 2900 South Quincy Street, Suite 800, Arlington,

Dose Predictions for Moon Astronauts Image Source: Nicholas Bachmann, Ian Rittersdorf Nuclear Engineering and Radiological Sciences.

The Gulmarg Neutron Monitor Ramesh Koul Astrophysical Sciences Division Bhabha Atomic Research Centre Mumbai

A New Solar Neutron Telescope working at the International Space Station K. Koga, T. Goka (PI), H. Matsumoto, T. Obara, O. Okudaira (JAXA) Y. Muraki (Nagoya)

A Novel Twin-TLD Radiation Dosimeter for Astronauts during LEO Missions B. Mukherjee 1, C. S. Llina-Fuentes 1, J. Lambert 1, B. Timmermann 1 C. Sunil 2,

KISTI 2013 달 토양에서 지하 깊이에 따른 고에너지 우주선 환경 영향 분석 Jongdae Sohn, Yu Yi Dept. of Astronomy & Space Science, Chungnam National University.

Space Dosimetry using MOSFET

Linear Energy Transfer and Relative Biological Effectiveness

Project Structure Advanced Neutron Spectrometer on the International Space Station (ANS-ISS) Mark Christl NASA/MSFC Oct 23, 2015 Honolulu, HI 1 1.

Lunar Reconnaissance Orbiter CRaTER Critical Design Review

SPACE RADIATION DOSIMETRY

AAE 450 – Human Factors Devin J. Cummings

CRaTER Science Requirements

Application of neutron monitor data for space weather

Sabra Djomehri SULI 2007 Stanford Linear Accelerator 8/15/2007

Unit 5 Earth’s Energy Budget.

Presentation transcript:

11/12/2015NASA-JSC and DIAS1 Study of Sensitivity Fading of CR-39 Detectors during Long Time Exposure D. Zhou a, b, D. O’Sullivan c, E. Semones a, N. Zapp a, E.R. Benton d a Johnson Space Center - NASA, 2101 Nasa Parkway, Houston, TX 77058, USA b Universities Space Research Association, 3600 Bay Area Blvd, Houston, TX 77058, USA c Dublin Institute for Advanced Studies, 5 Merrion Square, Dublin 2, Ireland d Eril Research Inc., 1110 Innovation Way, Suite 100, Stillwater, OK 74074, USA

11/12/2015NASA-JSC and DIAS2 The Role of CR-39 Detectors in Space Studies Measurement of (1)LET (Linear Energy Transfer) (2) Dose and Dose Equivalent (3) Charge Spectrum of GCR

11/12/2015NASA-JSC and DIAS3 Radiation Field in Low Earth Orbit GCR (Galactic Cosmic Rays) Solar Energetic Particles SAA (South Atlantic Anomaly) Albedo Neutrons

11/12/2015NASA-JSC and DIAS4 Radiobiological Impact on Astronauts Dominated by high LET (≥ 5 keV/µm water) CR-39 detectors are most appropriate

11/12/2015NASA-JSC and DIAS5 Some Space Missions Which Employed CR-39 Detectors LDEF (5.8 Years) EUROMIR (6 Months) Matroshka-1 (616 Days) Matroshka-2 (367 Days) ISS Expeditions (> 6 Months) DOBIES ( days)

11/12/2015NASA-JSC and DIAS6 Photo of Matroshka in Space

11/12/2015NASA-JSC and DIAS7 Fading of CR-39 Sensitivity Was observed for all CR-39 detectors with long time exposure. Compared to TEPC data, results measured with CR-39 are low. Results must be corrected for fading of latent tracks irrespective of source. Use “Fe peak” of exposed detector events compare with accelerator data.

11/12/2015NASA-JSC and DIAS8 A correction formula was found: S c = S o /(1-(a+bT)) where S o = etch rate ratio before correction S c = corrected value of etch rate ratio S c1 = S o1 /(1-(a+bT 1 )) S c2 = S o2 /(1-(a+bT 2 )) for exposure times T 1 and T 2

11/12/2015NASA-JSC and DIAS9 Table 1: Fading Comparison for different exposure time T(a + bT)1 – (a + bT)Sc/So (Month)

11/12/2015NASA-JSC and DIAS10 Major / Minor LET before Correction LET after Correction (µm)(keV/µm water) Matroshka / / / / / ISS-Expedition / / Table 2: Comparison of LET before and after correction of CR-39 sensitivity

11/12/2015NASA-JSC and DIAS11 Table 3: Radiation measured without and with fading correction for CR-39 sensitivity (values include background) Mission (Time) Exposure Position Absorbed Dose (≥10keV/µm water) Dose Equi. (ICRP60) (≥ 10 keV/µm water) Q Factor (Days)(mGy)(mSv) Matroshka-1 (616) P1 Eye Stomach R1 R ^/ 36.94* / / / / ^/ * / / / / ^/ 11.83* / / / / Matroshka-2 (367) P1 Eye Stomach R / / / / / / / / / / / / Expedition 12 (190) TEPC TESS SMP327 SMP / / / / / / / / / / / / 9.97 Expedition 13 (183) TEPC TESS SMP / / / / / / / / / 11.81

11/12/2015NASA-JSC and DIAS12 Table 4: A comparison of radiation quantities measured with JSC-TEPC and CR-39 (Fading correction applied to CR-39,ICRP60) Space Mission Absorbed Dose (TEPC / CR-39) Dose Equivalent (TEPC / CR-39) Q Factor (TEPC / CR-39) (µGy/d)(µSv/d) Expedition / / Expedition / / / Matroshka-2 (R2)~ 34 / 33.08~ 390 / / 11.74

11/12/2015NASA-JSC and DIAS13 Charge Identification (G-Seff Method) For two points separated by  x and with etch rate V T1 and V T2, G and Seff are: S eff = V eff / V g Where Vg is the bulk etch rate and Veff, the effective etch rate is For a track with 2n equally spaced etched cone, the overall value of G is given by: And the overall value of Veff is

11/12/2015NASA-JSC and DIAS14 Figure: Charge identification with G-Seff method for test events.

11/12/2015NASA-JSC and DIAS15 We wish to thank all those who assisted us in the ISS, Matroshka and Dobies space missions. DIAS wishes to thank the ESA PRODEX office for support of this work.