Neutronics and Nuclear Data for IFMIF - Overview -
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Transcript of Neutronics and Nuclear Data for IFMIF - Overview -
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
Association FZK-Euratom
Neutronics and Nuclear Data for IFMIF
- Overview -Ulrich Fischer
Association FZK-Euratom Forschungszentrum Karlsruhe
Y. Chena), S. P. Simakovb), P.P.H. Wilsonc), P. Vladimirovb), F. Wasastjernad)
IAEA TC Meeting, Karlsruhe, October 4-6, 2005
a)ASIPP, Hefei, China; b) Forschungszentrum Karlsruhe, Germany; c)University of Wisconsin-Madison, USA; d) VTT
Processes, Finland
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Test Cell
PIE Facilities
Access cell
IFMIF Intense Neutron Source
0 20 40m
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IFMIF Intense Neutron Source
• Deuteron beams:– 2 x 125 mA– Ed = 40 MeV
• Neutron production:
1.1 1017 s -1
• Test volumes:– high flux: 0.5 L > 20 dpa/fpy(*)
– medium flux: 6 L > 1 dpa/fpy,– low flux: 7.5 L 0.1-1 dpa/fpy
Beam Spot(20x5cm2)
High Flux
Low FluxMedium Flux
LiquidLi Jet
DeuteronBeam
(*)fpy = full power year
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IFMIF neutron flux spectrum
0,01 0,1 1 10 10010-1
100
101
102
103
104
105
106
10-1
100
101
102
103
104
105
106
ITER first wall HFTM (McDeLi) HFTM (McDeLicious)
N
eutr
on fl
ux d
ensi
ty [
1010/c
m2 /M
eV/s
]
Neutron energy [MeV]
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Prove IFMIF’s suitability as neutron source for fusion-specific simulation irradiations
Provide reliable data for the technical layout of facility
• Computational tools and data required– D-Li neutron source term simulation– Neutron transport (En> 20 MeV) – Activation and transmutation (En> 20 MeV)
Key role of neutronics in establishing IFMIF as neutron source for fusion material testing
IFMIF Neutronics Issues
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
• D-Li source neutrons for MC transport simulation – D-Li interaction processes– Neutron yield & spectra (energy, angle)– To be integrated to standard MC code (MCNP)
• MCNP McDeLi (P. P. H. Wilson, 1998) – Semi-empirical reaction model with adjustable parameters– Deuteron beam configuration, orientation and profile
• McDeLi McDeLicious (S. P. Simakov, 2001)– Use of evaluated d+ 6,7Li data to sample source neutrons– d + 6,7Li cross-sections for deuteron energies up to 50 MeV (A.
Konobeyev et al, NSE 139 (2001)) Improved new evaluation 2005 (P. Pereslavtsev, FZK)
D-Li Neutron Source Term
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Thick Li-target neutron yields
0 10 20 30 40
100
101
102
Deuteron Energy [MeV]
MCNPX
McDeLicious
McDeLi
Total Yield ( = 4)
Lone Johnson Sugimoto Mann Baba 2002
Neut
ron
Yiel
d,
1010
/C
0 10 20 30 4010-1
100
101 MCNPX
McDeLicious
Forward Yield ( = 0o)
McDeLi
- Daruga - Weaver - Goland - Amols - Nelson - Lone - Salmarsh - Johnson - Sugimoto - Bem 2002 - Baba 2002
Yiel
d,
1010
/sr/
C
Deuteron Energy [MeV]
Total (4π) Neutron Yields Forward (0o) Neutron Yields
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
10-5
10-4
10-3
10-2
10-1
100
0 10 20 30 40
=0o
Neu
tron
Yie
ld
[1010
n/s
r/M
eV/C
]
Baba et al. 2002 McDeLicious MCNPX
0 10 20 30 40
Ed = 25 MeV
=20o =10o
0 10 20 30 40
Neutron energy [MeV]
0 10 20 30 40 50
=90o
0 10 20 30 40 50
0 10 20 30 4010-6
10-5
10-4
10-3
10-2
10-1
=60o =40o
D-Li thick target neutron yield spectra
Ed= 25 MeV
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
10-4
10-3
10-2
10-1
100
1010 10 20 30 40 50
=20o
=0o
Neu
tron
Yie
ld
[1010
n/s
r/M
eV/C
]
Baba et al. McDeLicious MCNPX
=10o
0 10 20 30 40 50
Ed = 40 MeV
0 10 20 30 40 50 60
=45o
0 10 20 30 40 5010-5
10-4
10-3
10-2
10-1 =60o
0 10 20 30 40 50
Neutron energy [MeV]
0 10 20 30 40 50 60
=90o
Ed= 40 MeV
D-Li thick target neutron yield spectra
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Li(d,xn) Double Differential Cross Sections
0 5 10 15 20 25 30 35
10-1
100
101
102
Bem et al.
MCDeLicious
Li(d,xn), Ed = 16.6 MeV
= 0o
d2 /d
/dE
, m
b/sr
/MeV
Neutron Energy, MeV
0 10 20 30 40 50 6010-1
100
101
102
= 0o
Li(d,xn), Ed = 40 MeV
MCDeLicious
Neutron Energy, MeV
d2
/d/
dE,
mb/
sr/M
eV
Baba et al.
Ed = 17 MeV, Bem et al.
Ed = 40 MeV, Baba et al.
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
New d + Li Data Evaluation
P. Pereslavtsev, this meeting
0 5 10 15 20 25 30 3510-3
10-2
10-1
100
101
102
Bem, 03 Bem, 03 evaporation prequilibrium stripping 1 level 2 level 3 level 4 level 5 level total
7Li(d,xn), Ed=16.6 MeV
d2
/d/
dE [
mb/
sr M
eV]
Emitted neutron energy [MeV]
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Thick Li-target neutron yields using 2005 D-Li data evaluation (P. Pereslavstev et al.)
0 10 20 30 4010-1
100
101
2001
MCNPX
McDeLicious
Forward Yield ( = 0o)
McDeLi
- Daruga 68 - Weaver 72 - Goland 75 - Amols 76 - Nelson 77 - Lone 77 - Salmarsh 77 - Johnson 79 - Sugimoto 95 - Bem 02 - Baba 01/02
Neu
tron
Yie
ld, 10
10/s
r/C
Deuteron Energy [MeV]
2005
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IFMIF Test Cell Calculations
• Major neutronics task in this context:– Provide the data required for the design and optimisation of
the irradiation test modules and the lay-out of the test cell
Neutron/photon transport calculations (McDeLicious) for flux distributions and nuclear responses such as nuclear heating, radiation damage accumulation and gas production.
• IFMIF’ s primary mission is to generate a materials irradiation database for the design, construction, licensing and operation of DEMO
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Materials for IFMIF
• Highest priority: structural materials of the reduced activation ferritic-martensitic (RAFM) type (Eurofer, F82H). A variety of Eurofer specimens will be irradiated in the high flux
test module (HFTM) up to the target fluence of 150 dpa.
• Other materials of (possibly) lower priority:– SiC, V/V-alloy, divertor materials (e. g. W)– Breeder materials, neutron multiplier– Ceramic insulators and others
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Element Specification [w%]
Element Specification [w%]
C 0.090-0120 W 1.0-1.2 Mn 0.20-0.60 Ti <0.01 P <0.005 Cu <0.005 S <0.005 Nb <0.001 Si <0.05 Al <0.01 Ni <0.005 N 0.015-0.045 Cr 8.50-9.50 B <0.001 Mo <0.005 Co <0.005 V 0.15-0.25 O <0.01 Ta 0.05-0.09 Fe balance
Chemical Composition of RAFM Steel Eurofer
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
• IFMIF project (INPE Obninsk/FZK)- 1H, 56Fe, 23Na, 39K, 28Si, 12C, 52Cr, 51V (50 MeV)
- 6,7Li, 9Be (150 MeV)
• LANL 150 MeV data files (ENDF/B-VI.6)- 1,2H, 12C, 16O, 14N, 27Al, 28,29,30Si, 31P, 40Ca, 50,52,53,54Cr, 54,56,57,58Fe, 58,60,61,62,64Ni, 63,65Cu, 93Nb, 182,183,184,186 W, 196,198, 199, 200, 201, 202, 204 Hg, 206, 20, 208 Pb, 209Bi
• NRG evaluations– 40,42-44,46,48Ca- 45Sc, 46-50Ti, 54,56-,58Fe, 70,72-74,76Ge, 204,206-208Pb, 209Bi
• JENDL-HE data file– 1H, 12,13C, 14N, 16O, 24-26Mg, 27Al, 28-30Si, 39,41K, 40,42- 46,48Ca, 46-50Ti,51V, 50,52-54Cr, 55Mn, 54,56-58Fe, 59Co, 58,60-62,64Ni, 63,65Cu, 64,66-68,70Zn,90- 92,94,96Zr,
93Nb, 180,182-184,186W, 196,198-202,204Hg
Neutron Cross-Sections E 20 MeV - General purpose data ENDF evaluations -
T. Fukahori, this meeting
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Iron Transmission Benchmark Experiment (Shin et al.)
0 10 20 30 40 50 6010-14
10-13
10-12
10-11
10-10
Shin et al. 91 MCNP/INPE-FZK MCNP/LANL-150
t = 50 cm
t = 40 cm
Neu
tron
Flu
ence
, n/
cm2 /M
eV/p
roto
n
Neutron Energy, MeV
t = 20 cm
10 20 30 40 501
2
3
4
5
Cierjacks 66 Perey 72 Larson 81 Abfalterer 2001 FZK/INPE LANL-150
To
tal n
eutr
on
cro
ss-s
ecti
on
[b
]
Neutron Energy, MeV
Fe slabs (20, 40 50 cm) irradiated with source neutrons produced by 65 MeV protons on Cu target
Fe(nat) total neutron cross-section
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Li target
Irradiation test modules
IFMIF Test Cell
MCNP model (visualised by
CATIA)
CAD model (CATIA)
Accelerator lines
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
HFTM container
IFMIF High Flux Test Module (HFTM)
HFTM test rig
vertical cut horizontal cut
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Distributions of nuclear responses in the HFTM
Displacement damage rate [dpa / fpy]
50
40
30
20
10
50
40
30
20
10
50
40
30
20
10
7 6 5 4 3 2 1 1Z
0
10
20
30
40
50
60
0 1 2 3 4 5 6 7 8 9 10 11 12
1
2
3
4
52-Beams Footprint 20 x 5 cm2
dpa-rate [1/fpy]Y
Y
X
Z
d-Beams
Beam Footprint
7
6
5
4
3
2
1
X
Z
2420
16
12
8
24
20
16
12
8 4
24
20
16
12
8
7 6 5 4 3 2 1 1
2-Beams, Footprint 20 x 5 cm2
Z
0 1 2 3 4 5 6 7 8 9 10 11 12
1
2
3
4
5Nuclear Heating [W/cm3]
Y
Y
X
Z
d-Beams
Beam Footprint
7
6
5
4
3
2
1
X
Z
Nuclear heating [ W/ cm3]
McDeLicious calculations with simplified geometry model
S. P. Simakov, this meeting
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
-4
-3
-2
-1
0
1
2
3
4
0 10 20 30 40 50
dpa/fpy
Ver
tical
Dir
ectio
n, c
m
Fe displacement damage
-4
-3
-2
-1
0
1
2
3
4
0 1 2 3
W/g
Ver
tical
Dir
ectio
n, c
m
Nuclear heating
d - beam
Li – jet
HF
TM
(rig matrix)
HFTM
Distributions of nuclear responses in HFTM test rigs
McDeLicious calculations with detailed 3D geometry model
Nuclear heating
Displacement damage
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IFMIF Medium Flux Test Module (MFTM)
Creep- Fatigue Test Module (CFTM)Tritium Release
Module (TRM)
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
MFTM: MCNP geometry model (horizontal cut)
HFTMLi target
Be rigs(TRM)
W spectral shifter plate
Creep-fatigue testing
machine
LFTM
C neutron reflector
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
0 200 400 600 800 1000 1200 1400 16000
5000
10000
15000
20000
25000
30000
IFMIF: TRM with W
IFMIF: TRM upstream shifted
IFMIF: TRM no W
HCPB (PPCS)
BOR-60
HFR
1 fpy 20.000 h = 2.3 y 40.000 h = 4.6 y
He
prod
uctio
n [a
ppm
]
H-3 production [appm]
He vs. H-3 production rates in Be rigs of MFTM
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Nuclear Heating in Pulling Rods of CFTM
-10.0 -9.5 -9.0 -8.5 -8.0 -7.5 -7.0 -6.5 -6.0
2.5
3.0
3.5
4.0
4.5
5.0
-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0
2.5
3.0
3.5
4.0
4.5
5.0
6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
2.5
3.0
3.5
4.0
4.5
5.0
-10.0 -9.5 -9.0 -8.5 -8.0 -7.5 -7.0 -6.5 -6.0-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0-5.0
-4.5
-4.0
-3.5
-3.0
-2.5
W/g
-10.0 -9.5 -9.0 -8.5 -8.0 -7.5 -7.0 -6.5 -6.0
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
0
0.125
0.250
0.375
0.500
0.625
0.750
0.875
1.000
X, cm
Y,
cm
P. Vladimirov, this meeting
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
• Intermediate Energy Activation File IEAF-2001 (FZK/INPE)
– Complete cross-section data library for activation and transmutation analyses up to En 150 MeV (1 Z 84)
– Validated through series of benchmark calculations, tested and qualified for SS-316 & V/V-alloy samples in IFMIF activation experiment
• ALARA activation code (P. Wilson, UW) – Analytical and Laplacian Adaptive Radioactivity Analysis– Capable of handling an arbitrary number of reaction channels
EAF-2005 (En 60 MeV) for FISPACT inventory calculations recently became available (UKAEA Culham)
Activation and Transmutation Analyses
Tools and Data
R. Forrest, this meeting
U. Fischer, this meeting
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
IEAF-2001 Validation AnalysesActivation experiments in IFMIF-like white neutron field (U. v. Möllendorff et al., FZK; P. Bem et al. NPI Rez)
Hf-
179n
Hf-
180m
Hf-
181
Hf-
182m
Hf-
183
Ta-
182
Ta-
183
Ta-
184
Ta-
185
W-1
81
W-1
85
W-1
87
10-1
100
101
102
103
F82H (d-Li)EF-97
W#14 W#4
W#7
C/E
W Activation Products
Tungsten
Calculated (C) vs. measured (E) -radioactivities
Na
24Sc
46
Sc 4
7Sc
48
V 4
8C
r 48
Cr
51M
n 52
Mn
54M
n 56
Fe 5
2Fe
59
Co
56C
o 57
Co
58C
o 60
Ni 5
7H
f 18
0mT
a 17
7T
a 18
0T
a 18
2T
a 18
3T
a 18
4W
18710-3
10-2
10-1
100
101
FZK (d-Li): V-alloy FZK (d-Li): F82H
C/E
FZK (d-Li): SS-316
NPI (p-D2O): EF-97
Eurofer-97,SS-316, F82H, V alloy (FZK)
S. P. Simakov, this meeting
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
10-3 10-2 10-1 100 101 102 103 104 105 10610-6
10-4
10-2
100
102
104
106
W
LFTM
UTM
106ySS-316 & W, 1 year in IFMIF
TRM
BP
Hands-on Limit
Recycling Limit
104y100y1y30d1d
HFTM
Front Wall Liner
Con
tact
-D
ose
Rat
e,
Sv/h
Time after shutdown, years
Induced radioactivity in the IFMIF HFTM components
Contact - dose rate after IFMIF full power irradiation
[Sv/h]
IFMIF HTFM components (CAD model)
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Elemental Transmutation of Eurofer in HFTM
B C N O Al Si P S Ti V Cr
Mn Fe Co Ni
Cu
Nb
Mo Ta W
-20
-10
0
10
20
30
Burn-up
Generation
Tra
nsm
utat
ion
rate
, %
/fpy
- IFMIF/HFTM - FPR/HCLL - FPR/HCPB
• Assessed by McDeLicious transport and ALARA/IEAF-2001 inventory calculations
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
He production cross-section of Fe-nat up to 100 MeV
B. Haight, this meeting
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
• Dedicated approach for coupled 3D Monte Carlo and deterministic (SN) transport calculations for IFMIF shielding analyses
• Monte Carlo technique used to simulate the particle generation and transport in and around the neutron source region
• Discrete ordinates (SN) method used to treat the deep penetration problem in bulk shield.
• Mapping approach for calculating SN angular fluxes from scored data of Monte Carlo particle tracks crossing a specified surface
• Implemented in interface programme linking MCNP/McDeLicious and 3D SN code TORT of DOORS3.2 package
3-D shielding analyses of IFMIF
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
3-D shielding calculations for IFMIF Test Cell
Dose rate distribution in access room
Geometry model
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
Conclusions
• Suitable computational tools, data and models available for IFMIF neutronics and activation analyses – McDeLicious Monte Carlo code for Li(d,xn) neutron source
generation and transport simulation.– MC transport simulation calculations (e. g. test cell):
• Various general purpose intermediate/high energy data evaluations
– Activation and transmutation calculations:• ALARA inventory code with IEAF-2001 data• FISPACT code with EAF-2005
– Coupled Monte Carlo – Discrete Ordinates (SN) computational scheme for full 3D shielding calculations
– Detailed 3D geometry model of the entire IFMIF test cell.
IFMIF neutronics and nuclear data: significant progress
Forschungszentrum Karlsruhein der Helmholtz-Gemeinschaft
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U. Fischer, IFMIF Neutronics & Nuclear Data IAEA TC Meeting, Karlsruhe, October 4-6, 2005
• D-Li neutron source term– d + 6.7Li evaluation to be validated
– Further improvements required ?
• General purpose (ENDF) data evaluations E> 20 MeV– Need for full IFMIF nuclear data library– Benchmark experiments/analyses required– Cross-section measurements
• Activation/transmutation/gas production data– Need for validation ( Benchmark experiments)
– Need for cross-section measurements
– Deuteron induced activation cross-sections
Outlook