a tool for space radiation exposure calculations for aviators · a tool for space radiation...
TRANSCRIPT
A tool for space radiation
exposure calculations for aviators
P. Paschalis [1], A. Tezari [1] [2],
M. Gerontidou [1], H. Mavromichalaki [1]
[1] Athens Cosmic Ray Group, Physics Faculty; [2] Athens Medical School
University of Athens
Overview
1. Athens Neutron Monitor Station
2. CR cascades
3. Applications and tools
4. DYASTIMA
5. Conclusions and future plans
Athens Neutron Monitor Station-ANeMoS
http://cosray.phys.uoa.gr/
Founding member of the High Resolution Neutron Monitor Datadase-NMDB consortium (http://www.nmdb.eu)
Expert group of ESA SSA Space Radiation Service Center (http://swe.ssa.esa.int/web/guest/space-radiation)
Changes in the interplanetary field due to
phenomena of galactic and solar cosmic
radiation that affect the Earth's atmosphere.
Need for a timely and valid forecast of
changes in space weather
Numerous impacts on technological and
biological systems.
Space Weather
Max altitude of the cascade evolution ~ 15 – 20 km
Frequent flying altitude for airplanes
Radiation dose calculations at this altitude is critical!
Cascades
Some well-known works and applications
http://www.sievert-system.org
CRII - Cosmic Ray Induced Ionization
http://cosmicrays.oulu.fi/CRII/CRII.html Calculation of ionization in the atmosphere
University of Oulu (I.G. Usoskin, G.A. Kovaltsov, I.A. Mironova)
https://www.ikp.kit.edu/corsika/ Simulation of cosmic ray showers Karlsruhe Institute of Technology
(D. Heck, J. Knapp, J.N. Capdevielle, G. Schatz, T. Thouw)
ATMOCOSMICS-MAGNETOCOSMICS-PLANETOCOSMICS: http://cosray.unibe.ch/~laurent/planetocosmics/
Simulation of cosmic rays in the atmosphere, magnetosphere and at other planets
University of Bern (L. Desorgher, M. Gurtner, and E.O. Flückinger, M.R. Moser, R. Bütikofer)
Cari6
http://jag.cami.jccbi.gov/cariprofile.asp Galactic Radiation Received In Flight
Federal Aviation Administration Office Of Aerospace Medicine Civil Aerospace
Medical Institute
http://www.seibersdorf-laboratories.at assessment of cosmic radiation exposure
at flight altitudes during quiet and extraordinary solar conditions
Seibersdorf Laboratories
Calculation of the radiation dose received during a flight
Institute de Radioprotection et de Surete Nucleaire
http://cosray.phys.uoa.gr/index.php/dyastima
DYASTIMA is based on the well known simulation toolkit
Facts: It has been established in High Energy Physics It provides modeling of interactions for a wide energy range It provides accuracy It provides support and updates It has more than 10000 citations
Usage: Determination of geometry Determination of beam Determination of interactions Access to particles that are moving in the simulation volume
References • Agostinelli S., Allison J., Amako K., Apostolakis J. et al. for the Geant4 collaboration, NIM A, Volume 506, Issue 3, pp. 250-303, 2003 • Allison J., Amako K., Apostolakis J., Araujo H. et al. for the Geant4 collaboration, IEEE Transactions on Nuclear Science, vol.53, no.1, pp. 270-278, 2006 • Allison J., Amako K., Apostolakis J., Arce P. et al. for the Geant4 collaboration, NIM A, Volume 835, pp. 186-225, 2016 • Geant4, http://geant4.cern.ch
DYASTIMA has been implemented as a part of a PhD (Paschalis et al., 2014). The aim was the implementation of an easy to use simulation of cosmic ray showers within the Earth’ atmosphere
First version: Input via text files Output to csv files Atmosphere with constant composition No resume
Reference P. Paschalis et al., New Astronomy, 33, 26-37, 2014
DYASTIMA has been implemented as a part of a PhD (Paschalis et al., 2014). The aim was the implementation of an easy to use simulation of cosmic ray showers within the Earth’ atmosphere
Reference P. Paschalis et al.,, New Astronomy, 33, 26-37, 2014
Second version: Input via GUI Storing results to DB Output to csv files Atmosphere with varying composition Supports resume
14th ESWW
Geometry
Beam • spectrum of each particle • directional limits of each particle
Interactions • reference physics list • range/energy cuts
Tracking •Altitudes/layers for tracking
Input parameters
• composition and temperature profile of the atmosphere • radius, g, surface pressure, magnetic field • flat/ spherical model
Output parameters
@ tracking layers
@ production time • energy
DYASTIMA-R addition •Dose rate at each tracking altitudes/layers •Equivalent dose rate
• energy • time • direction • position • energy deposition
Structure of the last version Module 1
GUI
•Implementation in VB.NET •Handles the simulation scenarios and processes / prepares the input parameters for the simulation module •Exports the results from the DB
human phantom
(optional) airplane shell
• Implementation in C++
•Performs a simulation using the Geant4 toolkit •A human phantom is exposed at the flux that is calculated at an altitude
Module 4 DOSE CALCULATION
•Stores the results
Module 3 DB
•Implementation in C++ •Handles the simulation using the Geant4 toolkit •Flushes the results to the DB
Module 2 SIMULATION COMPONENT
P. Paschalis, H. Mavromichalaki, L.I. Dorman , C. Plainaki, D. Tsirigkas, New Astron., 33, 26-37, 2014
C.Plainaki, P. Paschalis, D. Grassi, H. Mavromichalaki, M.Andriopoulou, Ann. Geophys., 34, 595–608, 2016
L.I. Dorman , P. Paschalis, C. Plainaki, H. Mavromichalaki, Proc. 34th ICRC2015
P. Paschalis, A. Tezari, M. Gerontidou, H. Mavromichalaki, P. Nikolopoulou, XXV ECRS 2016 Proc.
First Results Using DYASTIMA-R
International Standard Atmosphere CR spectrum: CREME96
International Standard Atmosphere CR spectrum: CREME96
First Results Using DYASTIMA-R
ESA SSA Tender: RFQ/3-13556/12/D/MRP P3-SWE-III
WP 2130: Implementation of new UoA Federated Products Name: DYASTIMA
Contractor: University of Athens Duration: 9 months
Issue Date: July 2017 WP Manager: Prof. Em. H. Mavromichalaki
On going Plans
• Improvements regarding the input format • Improvements regarding the output format • Integration of dosimetry addition • Documentation
1. New version of DYASTIMA
2. Database
• Runs for different particle energies and different atmospheric models • Results regarding the showers and the dose accumulated instantly based on the
given conditions by the user
• Dedicated website for the product
• Information about DYASTIMA • Database • Examples • Publications
3. Web access
References
• Agostinelli S., Allison J., Amako K., Apostolakis J. et al. for the Geant4 collaboration, "Geant4 - a simulation toolkit", NIM A, Volume 506, Issue 3, pp. 250-303, 2003
• Allison J., Amako K., Apostolakis J., Araujo H. et al. for the Geant4 collaboration, "Geant4 developments and applications", IEEE Transactions on Nuclear Science, vol.53, no.1, pp. 270-278, 2006
• Allison J., Amako K., Apostolakis J., Arce P. et al. for the Geant4 collaboration, "Recent developments in Geant4”, NIM A, Volume 835, pp. 186-225, 2016
• Geant4, http://geant4.cern.ch
• P. Paschalis et al.: ''Geant4 software application for the simulation of cosmic ray showers in the Earth's atmosphere'', New Astronomy, 33, 26-37, 2014
• C.Plainaki, P. Paschalis, D. Grassi, H. Mavromichalaki, M.Andriopoulou, “Solar energetic particle interactions with the Venusian atmosphere”, Ann. Geophys., 34, 595–608, 2016
• L.I. Dorman , P. Paschalis, C. Plainaki, H. Mavromichalaki, “Estimation of the cosmic ray ionization in the Earth's atmosphere during GLE71”, Proc. 34th ICRC2015
• P. Paschalis, A. Tezari, M. Gerontidou, H. Mavromichalaki, P. Nikolopoulou, “Space Radiation exposure calculations during different solar and galactic cosmic ray activities”, XXV ECRS 2016 Proc.
Thank you!
We acknowledge the ESA – SSA Space Radiation Expert Service Center for funding this product (P3-SWE-III / WP 2130).
14th ESWW