VALIDATION OF FENDL-2.1 and JEFF-3.1 LIBRARIES FOR FUSION APPLICATIONS FNG Experiments Paola Batistoni ENEA Fusion Department – Frascati Meeting on Nuclear.

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VALIDATION OF FENDL-2.1 and JEFF-3.1 LIBRARIES FOR FUSION APPLICATIONS FNG Experiments Paola Batistoni ENEA Fusion Department – Frascati Meeting on Nuclear Data Libraries for Advanced Systems: Fusion Devices, IAEA, Vienna, 31 Oct - 2 Nov. 2007

FNG Benchmark experiments for FENDL-2.1 /MC validation in the frame of ITER Project Management and Quality Program: Quality Assurance in Neutronic Analyses (EFFDOC- 964):  Bulk shield experiment (inboard shield, stainless steel & water)  Streaming experiment (shield with streaming channel, stainless steel & water)  Silicon Carbide (SiC) block  Tungsten block  Breeder blanket (Be / Li 2 CO 3 ) experiment  including also JEFF-3.1 analysis

Main elements in benchmark experiments Data origin MaterialsEFF-3.0/3.1JEFF-3.1FENDL-1.0FENDL-2.0FENDL-2.1 Fe-56EFF-3.1 ENDF/B-VI.1EFF-3.0EFF-3.1 Cr-52EFF-3.0EFF-3.1ENDF/B-VI ENDF/B-VI.8 Ni-58 Ni-60 EFF-3.1 EFF-3.0 EFF-3.1 ENDF/B-VI.1ENDF/B-VI.8 EFF-3.1 ENDF/B-VI.8 W- 182,3,4,6 EFF-3.1JENDL-3.3ENDF/B-VIJENDL-FF (W-nat) ENDF/B-VI.8 Li-6 Li-7 ENDF/B-VI.3 EFF-2.4 ENDFB VI.1 ENDFB VI ENDF/B-VI ENDF/B-VI.8 Be-9EFF-3.0EFF-3.1ENDF/B-VI (C-nat) JENDL-FF C-12ENDF/B-VI (C-nat) ENDF/B-VI.1 (C-nat) JENDL-FF O-16ENDF/B-VI JENDL-FFENDF/B-VI.8 Si-28EFF-3.0JENDL-3.3BROND-2ENDF/B-VI.8

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment Mock-up of the ITER inboard first wall/shielding blanket/vacuum vessel/toroidal magnet  Measurements of the neutron flux as a function of depth by activation foils

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment E> 10 MeV Ni-58(n,2n) Nb-93(n,2n)

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment E> 3 MeV Al-27(n,a) Fe-56(n,p)

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment E> 0.8 MeV Ni-58(n,p) In-115(n,n’)

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment E  eV Mn-55(n,g) Au-197(n,g)

Validation of FENDL-2.1 & JEFF-3.1 Bulk Shield Experiment Nuclear Heating in stainless steel and copper

Validation of FENDL-2.1 & JEFF-3.1 SiC Experiment  Measurements of the neutron flux in four positions at different depths by activation foils Silicon Carbide block (SiC, advanced low-activation structural material)

Validation of FENDL-2.1 & JEFF-3.1 SiC Experiment

Validation of FENDL-2.1 & JEFF-3.1 Tungsten Experiment DENSIMET-176 (93.2%w W, 2.6%w Fe, 4.2%w Ni, g/cm 3 ). DENSIMET-180 (95.0%w W, 1.6%w Fe, 3.4%w Ni, g/cm 3 )  Measurements of the neutron flux in four positions at different depths by activation foils Tungsten block (armour material for plasma facing components)

Validation of FENDL-2.1 & JEFF-3.1 Tungsten Experiment E > 10 MeV Nb-93(n,2n) Zr-90(n,2n) Ni-58(n,2n)

Validation of FENDL-2.1 & JEFF-3.1 Tungsten Experiment E > 3 MeV Ni-58(n,p) Fe-56(n,p) Al-27(n,a) Au-197(n,g) E > 1 MeV E  eV E > 3 MeV

Validation of FENDL-2.1 & JEFF-3.1 Tungsten Experiment Gamma Heating in tungsten

Validation of FENDL-2.1 & JEFF-3.1 Breeder blanket experiment Measurements of tritium production in 4 positions P.2 – P.8 by Li 2 CO 3 pellets (nat. Li)(12 pellet/position) and of the neutron flux in the central Be layer by activation foils Mock-up of the EU breeder blanket Helium Cooled Pebble Bed (HCPB)

Validation of FENDL-2.1 & JEFF-3.1 Breeder blanket experiment Analysis of tritium production in Li 2 CO 3 pellets

Validation of FENDL-2.1 & JEFF-3.1 TBM – HCPB breeder blanket Analysis of activation measurements

All libraries give the same predictions for steel/water assemblies improvement in the nuclear heating calculation but still underestimation of fast neutron flux  need for improvement Significant underestimation of the fast neutron flux is found in SiC with FENDL-2.1  2.0, better results with EFF-3/JEFF3.1  need for improvement Significant improvement of the calculation of fast neutron flux from FENDL-2.0 to FENDL-2.1 in tungsten block, better results with EFF- 3/JEFF3.1. Underestimation of  heating both with JEFF and FENDL  need for improvement Very good prediction of neutron flux in breeder blanket mock-up (Be/ Li 2 CO 3 ) – Tritium production underestimated by %. FENDL-2.1  2.0  JEFF-3.1  need for improvement of angular distribution of secondary neutrons from Be-9(n,el) and Be-9(n,2n) reactions Validation of FENDL-2.1 & JEFF-3.1 Conclusions on FENDL-2.1 validation