studies of ads by means of jinr nuclotron
DESCRIPTION
Nuclear Physics Institute, Academy of Sciences of the Czech Republic Department of Nuclear Reactors, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague. Martin Suchopár. Studies of ADS by means of JINR Nuclotron. - PowerPoint PPT PresentationTRANSCRIPT
Studies of ADS by means of JINR Nuclotron
Martin Suchopár
Nuclear Physics Institute, Academy of Sciences of the Czech Republic
Department of Nuclear Reactors, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague
14th session of the AER Working Group F - "Spent Fuel Transmutations" &5th meeting of INPRO Project RMI - "Meeting energy needs in the period of raw materials insufficiency during the 21st century"Liblice, Czech Republic, April 10 – 12, 2012
2
Energy + Transmutation & Kvinta setup description
Method and models used in MCNPX simulations
Computation results
Beam monitoring and cross-section measurement
Conclusion
Outline
Setup
Method
Results
Beam monitors
Conclusion
3
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
Energy + Transmutation Setup
m natU = 206 kg
Kvinta 2010 and 2011 Setup
4
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
d
Kvinta 2010 setup Kvinta 2011 setup
• 3 sections
• 4 detector plates
• Pb shielding
• 5 sections
• 6 detector plates
• no Pb shielding
m natU = 315 kg m natU = 512 kg
5
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
Kvinta-M 2011 Setup
6
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
Kvinta-M 2011 Setup
120
r 40
114
Target sections (U-238)
p, d
Y
Z
262
393
0
131
17 17 17 17
524
655
700
Beam window, Ø 80
March 2011 irradiation
7
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
Kvinta-M 2011 Setup
900
beam entrance window
150×150 mm
lead shielding 100 mm
d 0
Y
Z
114
120
r 40
262
393
131
17 17 17 17
524
655
700
section U-238
mounting pits for detector plates
December 2011 irradiation
8
Setup
• E+T setup
• Kvinta setup Method
Results
Beam monitors
Conclusion
Kvinta-M 2011 Setup
9
Setup
• E+T setup
• Kvinta setup
• Irradiations Method
Results
Beam monitors
Conclusion
Energy + Transmutation and Kvinta Irradiations
Energy + Transmutation set-up
Beam energy [GeV]
Beam particles
YearIrradiation time [h:m]
Integral beam flux
[x1013]
0.7
protons
2004 8:51 1.47
1.0 2003 6:03 3.40
1.5 2001 12:03 1.14
2.0 2003 7:43 1.25
1.6
deuterons
2006 8:00 2.45
2.52 2005 6:46 0.65
4.0 2009 17:48 1.99
Kvinta set-up
2.0
deuterons
March 2011
18:50 1.69
4.0 17:58 1.41
6.0 17:13 1.93
1.0 Decem
2011
14:26 1.53
4.0 12:24 1.93
10
Target «Quinta-М»
QUINTA-M setup layout at the irradiation position
Plate (700х400х16)
Platform
p, d
SSNTD and AD positions on the QUINTA-M target surface
Rails
Beam window
Pad with Pb foil monitor and SSNTD
Detector plates
Setup
• E+T setup
• Kvinta setup
• Irradiations Method
Results
Beam monitors
Conclusion
11
QUINTA setup and equipment layout during an experiment at F-3 focus (December 2011)
3320
Beam extraction
Ionization chamber
Activation foil
Profilometer
QUINTA
Polyethylene shielding
Sc telescope
2 detectors Demon (NE213)
ISOMER
20°
90°160°
Platform(turned by 2° relatively to the beam axis)
detector Не3
2 detectors Demon (NE213) 2 detectors Demon
(NE213)
1) Activation detectors2) Solid State Track detectors3) NE213, Stilben neutron detectors4) He-3 neutron detectors
Setup
• E+T setup
• Kvinta setup
• Irradiations Method
Results
Beam monitors
Conclusion
12
Main Objectives of the Kvinta Setup
1) To have another set-up for benchmark studies of neutron production and transport simulation codes (e.g. MCNPX code)
2) To have systematic of deuteron beams with energies above 1 GeV
3) To obtain strong source of neutrons for transmutation tests
4) Measurement of neutrons and delayed neutrons during low intensity beam irradiation by scintillation detectors
5) Measurement of neutron field during high intensity beam irradiation by threshold activation and solid state track detectors
6) Measurement of fission yields in thorium and natural uranium samples in fast neutron spectra
Setup
• E+T setup
• Kvinta setup
• Irradiations Method
Results
Beam monitors
Conclusion
13
Setup Method • Setup model
• MCNPX simulation
Results
Beam monitors
Conclusion
Comparison of E+T and Kvinta SetupE + T setup model Kvinta 2011 setup model
30 U rods 54 U rods 61 U rods
14
Setup Method • Setup model
• MCNPX simulation
Results
Beam monitors
Conclusion
Kvinta Setup with Lead ShieldingKvinta 2012 setup model
54 U rods 61 U rods
side view top view
front view
MCNPX simulations
15
• Used version MCNPX 2.7a
• Used Los Alamos la150n and la150h libraries
• All available physics models tested
• Most preferred combination of models – Bertini-Dresner (default) and INCL-ABLA (time-consuming computation but provides the most reliable results)
Setup Method • Setup model
• MCNPX simulation
Results
Beam monitors
Conclusion
Kvinta neutron spectra
16
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta setup with Pb shielding simulated neutron spectra in Al foil
Kvinta neutron distribution
17
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta setup with Pb shielding 24Na yield in Al foils distribution in 4 GeV deuteron experiment
sample sim yield rel error exp yield rel error exp/simAl-1 3,20E-05 0,006 5,08E-05 0,014 1,590Al-2 4,85E-05 0,004 7,80E-05 0,016 1,606Al-3 2,40E-05 0,007 2,99E-05 0,012 1,248Al-4 9,79E-06 0,012 1,14E-05 0,012 1,160Al-5 4,60E-06 0,020 5,00E-06 0,010 1,086Al-6 2,43E-05 0,006 3,75E-05 0,013 1,538Al-7 1,18E-05 0,009 1,42E-05 0,012 1,206Al-8 6,07E-06 0,013 5,80E-06 0,010 0,956Al-9 1,33E-05 0,009 1,44E-05 0,010 1,078
Al-10 5,36E-06 0,017 6,07E-06 0,013 1,133Al-11 1,40E-05 0,009 1,72E-05 0,011 1,228Al-12 6,65E-06 0,014 7,24E-06 0,012 1,089Al-13 7,51E-06 0,012 8,51E-06 0,012 1,134Al-14 3,98E-06 0,019 4,21E-06 0,015 1,057
simulated and experimental yield per source deuteron per gram of activation material
Kvinta neutron distribution
18
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta setup with Pb shielding longitudinal neutron distribution
normalization to the Al foil located on the target axis on the second detector plate
Kvinta neutron distribution
19
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta setup with Pb shielding radial neutron distribution
normalization to the Al foil located on the target axis on the second detector plate
Simulated multiplicity – various models
20
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta 5 sections setup neutron multiplicity
Simulated multiplicity – various models
21
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta 5 sections setup with Pb shielding neutron multiplicity
Simulated multiplicity – various models
22
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta 5 sections setup neutron multiplicity per GeV
Simulated multiplicity – various models
23
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Kvinta 5 sections setup with Pb shielding neutron multiplicity per GeV
Simulated multiplicity – various models
24
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Comparison of Kvinta 5 sections setup with and without Pb shielding neutron multiplicity
Simulated multiplicity – various models
25
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Comparison of Kvinta 5 sections setup with and without Pb shielding neutron multiplicity per GeV
Neutron multiplicity from various models
26
Kvinta 5 sections 4 sections3 sections +
Pb
Model 2 GeV 4 GeV 2 GeV 4 GeV 2 GeV 4 GeV
Bertini-ABLA 115.7 209.6 112.5 204.1 116.2 208.0
Bertini-Dresner 108.9 197.3 106.1 192.4 109.7 196.4
CEM03 118.3 213.1 115.2 207.7 114.7 204.7
INCL-ABLA 112.6 203.3 108.4 197.2 113.8 205.2
INCL-Dresner 112.6 203.3 108.4 197.2 113.8 205.2
ISABEL-ABLA 113.6 201.9 110.3 196.2 114.5 201.3
ISABEL-Dresner 105.8 189.3 102.7 183.9 106.7 189.3
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Neutron multiplicity from various models
27
Kvinta 5 sections 5 sections + Pb
Model 1 GeV 2 GeV 4 GeV 1 GeV 2 GeV 4 GeV
Bertini-ABLA 56.4 115.7 209.6 60.7 125.5 229.6
Bertini-Dresner 53.4 108.9 197.3 57.4 118.2 216.5
CEM03 58.5 118.3 213.1 60.4 123.6 224.9
INCL-ABLA 54.0 112.6 203.3 57.8 122.5 225.2
INCL-Dresner 51.0 104.3 187.4 54.6 113.5 207.6
ISABEL-ABLA 56.8 113.6 201.9 61.0 123.7 222.9
ISABEL-Dresner 52.8 105.8 189.3 57.0 115.5 209.0
Setup Method
Results• neutron spectra
• neutron distribution
•MCNPX models
• Multiplicity in various models
Beam monitors
Conclusion
Beam Monitoring and xs Measurements
28
deuteron beam with energies of 1, 2, 4 and 6 GeV
common measurement of beam intensity using ionization chambers
aluminium and copper foils for beam monitoring
aluminium foil – integral number of deuterons determination, placed several meters away from the set-up
copper foil – deuteron cross-section measurement, placed together with the aluminium foil
copper foil cut into pieces – beam position and profile determination, placed directly on the beginning of the target
gold foil with aluminium standard – deuteron cross-section measurement, used in the most recent experiments (1 and 4 GeV)
copper foil – beam alignment with the target axis, placed on the back of the target (2, 4, 6 GeV experiments without Pb shielding)
Setup
Method
Results
Beam monitors
Conclusion
Beam Monitors
29
Setup
Method
Results
Beam monitors
ConclusionCorrection for Coincidences
Peak area
Dead time correction
Self-absorption correction
Decay during cooling and measurement
Decay during irradiation
Detector efficiency
Beam instability correction
)()(
)(
11)(
)( 0
irrreal tirr
t
t
live
real
areagP
aabspyield
e
t
e
e
t
t
CoiCCEI
BECSN
line –intensity per decay Correction for
geometry change
Square-emitter correction
λ – decay constant,tirr – irradiation time,treal – real measurement time,tlive – live time of the detector,t0 – cooling time.
Beam integral determination by Al foil
Beam Monitors
30
Setup
Method
Results
Beam monitors
Conclusion
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
1 10 100 1000 10000
Cro
ss-s
ecti
on [b
arn]
Deuteron energy [MeV]
27Al(d,3p2n)24Na
2.33 GeV - 15.25 mbarn
2 GeV - 15.43 mbarn
6 GeV - 14.1 mbarn
4 GeV - 14.49 mbarn
A
yieldd Nm
ASNN
Nyield – total amount of produced 24Na nuclei, A – molar weight, σ - cross-section, m – weight of the foil, S – area of the foil, NA – Avogadro’s number.
Beam Monitors
31
Setup
Method
Results
Beam monitors
Conclusion
0.090.08
0.010.00
0.87
0.86
0.04
0.00
0.800.98
0.05
0.010.07
0.10
0.010.02
left
right
centre
centre
top
down
0.180.49
0.45
0.20
0.35
0.910.97
0.330.33
0.850.94
0.380.150.370.53
0.21
left
rightcentre
centre
top
down
Cu foil cut into 16 pieces 2x2 cm4 most active foils cut again into 16 pieces 1x1 cmexample of beam position and
shape determination (6 GeV exp)beam centre beam FWHM
xc 1.42 ± 0.05 cm xf 1.56 ± 0.05 cm
yc -0.18 ± 0.05 cm
yf 2.24 ± 0.05 cmresults from SSNTD (A.
Potapenko)
beam centre beam FWHM
xc 1.94 ± 0.10 cm
xf 2.39 ± 0.20 cm
yc 0.03 ± 0.10 cm
yf 2.83 ± 0.20 cmresults from activation foils (Řež group)
Conclusion
32
made detailed model of the new Kvinta setup consisting of uranium target and blanket
calculated neutron multiplicity of several modifications of the new Kvinta setup
simulated neutron spectra in diverse positions in the new Kvinta setup and obtained experiment/simulation yield ratios
studied dependency on various physics models included in MCNPX
performed beam integral, position, shape and alignment monitoring using aluminium and copper foils
performed deuteron cross-section measurements on copper and gold foils, data in evaluation process
Setup
Method
Results
Beam monitors
Conclusion
33
Thank you for your attention