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Overview of Ion-Ion validation

KOI, TatsumiSLAC National Accelerator Laboratory

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Validation of Ion physics• Reaction level validation– Neutron production– (Projectile) Fragment production– Isotope production (Target, Projectile)– Pion production– Often done by developers

• Integrated Validation– Thick Target Neutron Yield– Shape of Brag Peak– Rate of Singe Event Upset in Space– Often done by users

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Reaction level validation

Validations of G4QMD (and BC)• Double Differential Neutron Production Cross Section

• Target: Carbon to Lead• Projectile: C12 to Ar40• Projectile Energy: 290MeV/n to 600 MeV/n

• Double Differential Neutron Yield• Target: Carbon to Lead• Projectile: C12 to Xe132• Projectile Energy: 290MeV/n to 800 MeV/n

• Charge Changing Cross Section and Fragment Particle Productions– Comparing simulation results to 131 combinations of projectile and target particles

• Target: Carbon to Lead• Projectile: C12 to Fe56• Projectile Energy: 290MeV/n to 10GeV/n

– 98% of the results of charge changing cross sections are within 15% error– 84% of the results of charge changing cross sections are within 10% error

Geant4 Collaboration Workshop 2010-10-7

Fe 1GeV/n on Al

10 12 14 16 18 20 22 24 26 28 3010

100

1000

DATAG4RQMD

D. M ancusi et al., “Stability of nuclei in peripheral collisions in the JAERI quantum molecular dynamics model”

PHYSICAL REVIEW C 79, 014614 (2009)

Geant4 Collaboration Workshop 2010-10-7

Ion-Ion interactions for space environments

Ivantchenko A.

Thick Target low energy shielding test

– Thick Target Neutron Yield (TTNY);– EXFOR database (CYRIC facility experiment, Tohoku University, Japan);– „Physics list“ test;– Targets Li, Be, C, Al, Ta, W;– Energy 20-70 MeV, 100-400MeV/n;– Reactions (p,n), (d,n), (Ion,n);• Ion-Ion targets 100-400MeV/n*

* – very recent settings in the ESA project G4DNA, - this data are different from Tatsumi data reports (D.Satoh, T.Kurosawa, T.Sato, et.al. „Reevalution of secondary neutron spectra from thick targets ...“, Nucl. Instr. Meth. Phys. Res. Sect. A, v.582, 2-3, 507-515)

9.4beta Be(d,n) 25MeV

9.3ref07 Fe56(Al,n) 400MeV

9.3ref07 Ne20(Al,n) 100MeV

9.3ref07 Ne20(Al,n) 400MeV

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Integrated validation

Geant4 Space Users Workshop 2010-08-19 Seattle

Forward Angle Spallation

M.A. Clemens et al., IEEE TRANS, VOL. 56, 3158 (2009)

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Paola Sala, SATIF10 16June 2,2010

Data collection and intercomparison in EC projects

T.T. Boehlen et alBenchmarking nuclear models of FLUKA and GEANT4 for carbon ion therapySubmitted to Phys. Med. Bio.

Charge changing cross sectionsin water

Validation

• Below 100MeV/n– Several validations– Lower limit of QMD ??

• 100 MeV/n ~ 500 MeV/n– Many validation

• 500 MeV/n ~ 5 GeV/n– Upper Limit of QMD, BC– A few validations

– Data AGS,GSI, DUBNA, MSU

• 5 GeV/n ~ 50 GeV/n– FTF– Limited number of

validations– Data AGS,DUBNA,SPS

• Beyond 50GeV/n– RHIC, LHC?

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Summary • Because of interest from the field of particle therapy, 100MeV/n

to 500MeV/n are most validate by both developers and users • Below the 100MeV/n, data exist, but not well validated. Lower

limit of QMD is not clear. • Beyond 5GeV/n, Validation against FTF predictions are

required.• Compare to two previous presentations, I should admire that

organization of this area need to be improve.• So I have a lot of hope for the next presentation. • Are developers making the validation result done by others

reflect in future developments?