14th International Conference on Nuclear Reaction Mechanisms Varenna, June 15-19,2015 Experimental data of light mass fragment production for intermediate energy nucleon and nucleus induced reactions Toshiya Sanami Radiation Science Center, Applied Physics Laboratory High Energy Accelerator Research Organization (KEK) 15’+5’

Contents of talk Introduction Energy deposition in a micro volume Light mass fragment (LMF) production Experiment Bragg curve counter Result LMF production for same kinetic energy, different incident particle Conclusion and outlook

Introduction Energy deposition within a micro volume Energy deposition generate charge in the volume Exceed critical value, Single event effect, Quality factor for radiation dose Si deviceCell order of μm radiation

Introduction (cont’) nucleon nucleus neutron charged particles reaction Energy deposition with changing its charge Light mass fragment (LMF)

Introduction (cont’) Double differential cross section of LMF In this study, measurement extend to nucleus incident INC model should be selected properly Underestimation for forward angle Systematic data

Experiment NIRS930 Cyclotron p, d, He, C beam, RCNP ring cyclotron for p Be 1 μm, C 206 μg/cm2, Al 0.8 μm, Ti 1 μm, Cu 1 μm, in thickness Fragment Beam Sample changer BCC 30deg. BCC 60deg. BCC 90deg. Dump

Particle identification Bragg Curve Counter He Li Be B C N O Al(C,x) Ec=144 MeV (12 MeV/n) at 30 deg Particle Energy [MeV] Bragg peak height

Data analysis Number of incident particles : Faraday cup Number of atom in target : Thickness Energy calibration: Pulser and punch-through fragment Energy loss : Average correction Solid angle : α counting from 241 Am source Results are verified through comparison with results by the other group for (p,Li),(p,Be) of Al and Cu target at 200 MeV

Data catalogue pdHe 12 C 24 MeVCAlTiCuBe 40 MeVCAl 50 MeVCAlTiCuBeCAlTiCuBeCAl 70 MeVCAlC TiCuBeCAlTi CuCu Be 80 MeVCAl 100 MeVCAl 140 MeVCAlTiCuBeCAl 200 MeVCAlTiCuBe 300 MeVCAlTiCuBe Cross check data

Comparison with another data Al(C,B) 30deg. Al(C,C) 30deg. Al(C,N) 30deg. Al(C,O) 30deg. S.V.Fortsch et al, NPA797(2007),1

Comparison with calculation results To understand which model and process are contribute to fragment production Fragment production, Open source, selectable several models PHITS 272 with default option INCL, JQMD + GEM 1e4 history x 5e4 batches Forced collision, Ring shaped tally

Ein=70MeV, C at 30deg Particle Energy [MeV] Double Differential Cross Section [mb/MeV/sr]

Ein=70MeV, Al at 30deg Double Differential Cross Section [mb/MeV/sr] Particle Energy [MeV]

Integrated cross section

Conclusion and outlook Fragment production for same energy, different particle 70 MeV p, He, C on C and Al, Li to O emission C : MIssing direct component, level structure Al : Increase reaction rate itself, Total-XS for nucleus incident Other particles and angles should be covered 本研究は 文部科学省科学研究費補助金 基盤 C 「入射粒子に捉われない核破砕片生成モデルのための実験的研究」 ( ) の一部である

On going improvement BCC-SSD-SSD-CsI Smaller size p,d,t,He measurement simultaneously with LMF BCCSSDCsIVeto