30 september 2002geant4 workshop, cern1 esa geant4 activities esa space environment & effects...

30 September 2002 Geant4 Workshop, CERN 1

ESA Geant4 Activities

ESA Space Environment & Effects Analysis Section

P. Nieminen, E. Daly, H.D.R. Evans, A. Keating, A. Mohammadzadeh, R. Nartallo, G. Santin

ESA-ESTEC



Sun – a large particle accelerator


Solar flare electrons,protons, and heavy ions

Jovianelectrons

Solar flare neutronsand -rays

SolarX-rays

Galactic and extra-galacticcosmic rays

Induced emission

(Neutrinos)

Trapped particles

Anomalouscosmic rays



X-Ray Multi-mirror Mission (XMM) Study of black holes, formation of galaxies, … Length 10 m, span of solar panels 16 m Mass 3.8 tons



1

10

100

0 2 4 6 8 10 12 14

Scatter Angle (degrees)

Flu

x (

#/cm

2 /st/

inc.

p+

)

Columbia: 1.3 MeV, 1.576deg G4: 1.3 MeV, 1.576deg

RGS Acceptance Range

p

6Geant4 Workshop, CERN30 September 2002


Standard Radiation

Environment Monitor (SREM)



Standard Radiation



SREM on PROBA: protons and electrons


SREM

South Atlantic Anomaly (SAA)

“Polar horns”


SREM data from solar event of 26 December 2001




MULASSIS: WWW tool for shielding calculations

Particle Fleunce after 20 mm Aluminium

1.E-02

1.E-01

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06

Energy (keV)

Pa

rtic

le/c

m2/k

eV

Proton

Neutron

Electron

Gamma

Incident proton

PHS in the Si detector

1.E-08

1.E-07

1.E-06

1.E-05

1.E-04

1.E-03

1.E-02

1.E-01

1.E+00

1.E+01 1.E+02 1.E+03 1.E+04 1.E+05

Energy (keV)

Co

un

ts/k

eV

/in

cid

en

t p

roto

n

5 mm Al

1 mm Al

20 mm Al



MULASSIS: WWW tool for shielding calculationsNIEL Dose per Year

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

1.E+07

1.E+08

0 10 20 30 40 50

Aluminium Shield Thickness (mm)

NIE

L D

os

e (

Me

Vc

m2 /g (

Si)

)

Total

Proton

Neutron

Electron

Doses in Si After Al Shield

5

15

25

35

45

55

65

0 5 10 15 20 25 30 35 40 45 50

Thickness (mm)

Do

se

(R

ad

(Si)

/Ye

ar)

ShieldDose-2

MULASSIS


A.Keating1, A.Mohammadzadeh1, B.Nickson1, A.Jaksic2 , W. Hajdas3

1 ESA/ESTEC/TOS-QCA, Postbus 299 - NL 2200 AG Noordwijk, The Netherlands.2 NMRC, University College Cork, Lee Maltings, Prospect Row, Cork, Ireland.

3 PSI, Paul Scherrer Institut, CH-5232 Villigen, Switzerland

Modelling packaging effects on proton irradiation responseModelling packaging effects on proton irradiation responseof NMRC RadFETsof NMRC RadFETs

Metallis

ation

Drain

& so

urce

Field Oxide

Radfet #2

Radfet #4

Radfet #1#3

S300/50G300/50 D300/50

D690/15

DG300/50

G690/15

S690/15

DG690/15

Bulk

Bulk

Diode

Geometry description


• Investigating Secondary Particles and Package Effect

• Simulated Response to Proton Irradiation

Main results:



ESA Columbus module on ISS



DESIRE (Dose Estimation by Simulation of the

ISS Radiation Environment): http://www.particle.kth.se/desire/

Prediction of the ambient energetic particle environment (SPENVIS & additional models)

Construction of COLUMBUS geometry Radiation transport, including secondary

particle production, through the geometry.

Geant4, HZETRN, and SHIELD inter-comparison.

Calculation of astronaut radiation doses Connection to the INTAS-00-629

activity

Neutrons



INTAS project 00-629

Radiation environments and effects, and their dependence on time, position, and mission duration

Development of associated techniques for prediction of spacecraft radiation hazards

Evaluation of shielding strategies and methods; development and implementation of new models in Geant4, comparisons to the Russian SHIELD code and experimental data

Study of the High-Energy Interplanetary Radiation Fields and Radiation Effect Simulation for Spacecraft Missions

http://srd.sinp.msu.ru/INTAS/



INTAS project 00-629

Differential cross sections for secondary particles Cross sections of production of residual nuclei Energy spectra of residual nuclei Distribution of energy deposition over the target Total and differential yield of particles

Study of the High-Energy Interplanetary Radiation Fields and Radiation Effect Simulation for Spacecraft Missions



INTAS-00-629: heavy ion fragmentation data base

10 100 10001E-3

0.01

0.1

1

10

100

Cro

ss s

ectio

n, m

b

Alpha energy, MeV

Be7 H3 Na22 Na24

Production of radioisotopes 3H, 7Be 22Na and 24Na from interaction of ‑particles with Al.

7 8 9 10 11 12 13 14 15 16 170

20

40

60

80

100

120

140

160

Cro

ss S

ectio

n, m

b

Z

Production of elements from fragmentation of 40Ar (213 MeV/u) on nucleus-target C.



INTAS-00-629: heavy ion fragmentation data base

0 5 10 15 20 25 30 35 40 451E-4

1E-3

0.01

0.1

1

10

d2 /d

Ed

, m

b/s

r*M

eV

EA=24

, MeV

10 deg 30 deg 60 deg 90 deg

Energy spectra of residual nuclei with A=24. Projectile energy Eα=117.4 MeV on 28Si.

Energy spectra of secondary protons in the reaction 12C(3.6 GeV/u) + C.

0 50 100 150 200 250 300 350 4001E-3

0.01

0.1

1

10

mb/(

sr*M

eV

)

Proton energy, MeV

30o

40o

90o

99o

138o

150o



Radioactive Decay Module (RDM)

Energy (keV)

122Cd decay ENSDF 2 on-line database used

by a Java utility - and -particles, -rays, ,

daughter nuclides if unstable Times of observation as

required by the user Specific parts of the geometry Nuclide selection by the user Analogue Monte Carlo

potentially inefficient: variance reduction techniques used

Applications: Astrophysics missions, medical use, mineralogical analysis, ...



Radioactive Decay Module (RDM)

Simulation of decay chains Simulation time (s)



INTEGRAL

Study supernova explosions, gamma ray bursts, black holes, formation of elements Length 5 m, mass 4.1 tons Energy range 15 keV – 10 MeV Orbit 10000 km perigee,153000 km apogee => radiation belts



X-Ray Surveys of Solar System Bodies

Induced X-ray line emission:indicator of target composition(~100 m surface layer)

Cosmic rays,jovian electrons

Geant3.21

ITS3.0, EGS4

Geant4

Solar X-rays, e, p

Courtesy SOHO EIT

C, N, O line emissions included


HERMES X-Ray Spectrometer on

Mercury Planetary Orbiter

PIXE from solar proton events



HERMES X-Ray Spectrometer on

Mercury Planetary Orbiter


BESSY-II data



Laser Interferometer Space Antenna (LISA)


Laser Interferometer Space Antenna (LISA)Satellite Test of the Equivalence Principle (STEP)Charging of test masses by cosmic rays and solar particles, -rays, and displaced gold ions

Analysis by Geant3.21 down to 10 keV; interfacing with ITS3.0 down to 1 keV. [Y. Jafry et al., Class. Quantum Grav. 13, 1996]

p+, Au+

-rays

Geant4: Analysis possible in one framework down to 250 eV.

SMART-2 application




Electron spectra



Radiation Effects Analysis Tools (REAT), SPENVIS and Geant4 interface for Multi-Layered Shielding Simulation Software (MULASSIS), including WWW version [QinetiQ, University of Southampton, BISA]

Dose Estimation by Simulation of the ISS Radiation Environment (DESIRE) [KTH Stockholm, Karolinska Institut, EAC, ESTEC, INR]

Geant4 simulations on the ESA SREM instrument [University of Bern] Predicting displacement damage effects in electronic components by method of

simulation (NIEL). [University of Cologne] Further work on low-energy e.m. extensions, e.g. for Bepi Colombo [INFN

Genova, ESA Astrophysics, other Institutes and Universities] Improvement of graphical representation of solids, investigation of STEP to

XML translation [E. Chernaev, CERN] Development of Internal Conversion process; hadronics comparisons [QinetiQ] SpaceGRID, WP on Geant4 application [Datamat, QinetiQ] INTAS project 00-629: comparisons with SHIELD code [ESTEC, BISA,

CNES, Russian Institutes]

Recent and on-going Geant4-related R&D funded by ESA



Upcoming Geant4 R&D and other activities

Energetic Particle Shielding and Interactions Software, major R&D item. 5 ESA Science missions + 4 other activities for Geant4 development and applications [QinetiQ + 4 other Institutes / Teams]

Proposal for ESA-Portugal Task Force: Study on EUSO and AMS on the ISS [LIP Lisbon]

Proposals in the 2003-04 ESA General Studies Programme for plasma and components tools and applications

In-house simulations for the Herchel infrared mission, due for launch in 2007 Geant4 Space Users’ Forum 20-22 January 2003 at ESTEC:

http://www.estec.esa.nl/conferences/03C05/index.html



AURORAManned and unmanned Solar System Exploration initiative in 20-30 years time frame. Items for radiation environments and effects:

Radiation Shielding and Effects (Geant4 models, open competition) Radiation Exposure and Mission Strategies for Interplanetary

Manned Missions (Geant4 applications, open competition)

30 september 2002geant4 workshop, cern1 esa geant4 activities esa space environment & effects...

Documents

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