Nuclear Physics Institute Academy of Sciences of the

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 Simulations of new uranium set-up Kvinta used on Nuclotron accelerator at Dubna Martin Suchopár 13 th session of the AER Working Group F - "Spent Fuel Transmutations" & 4 st meeting of INPRO Project RMI - "Meeting energy needs in the period of raw materials insufficiency during the 21 st century" Liblice, Czech Republic, April 26 – 30, 2011

Outline Setup Method Results Energy + Transmutation & Kvinta setup Method used in MCNPX simulations Results Conclusion 2

Energy + Transmutation Setup • E+T setup • Kvinta setup Method Results Conclusion 3

Kvinta 2010 and 2011 Setup Kvinta 2010 setup Setup Kvinta 2011 setup • E+T setup • Kvinta setup Method Results Conclusion 4 • 3 sections • 5 sections • 4 detector plates • 6 detector plates • Pb shielding • no Pb shielding

Kvinta-M 2011 Setup • E+T setup • Kvinta setup Method Results Conclusion 5

Kvinta-M 2011 Setup • E+T setup • Kvinta setup Method Results Conclusion 6

Comparison of E+T and Kvinta Setup E + T setup model Kvinta 2011 setup model Setup Method • Setup model • MCNPX simulation Results Conclusion 7 30 U rods 54 U rods 61 U rods

MCNPX simulations Setup • Used version MCNPX 2. 7 a Method • Used la 150 n and la 150 h libraries • Setup model • MCNPX simulation Results Conclusion 8 • All available physics models tested • Most preferred combination of models – Bertini-Dresner (default) and INCL-ABLA (gives the best results)

Kvinta neutron distribution Kvinta 5 & 4 sections setup longitudinal neutron distribution Setup 5. 0 E-01 Results • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion Neutrons [deuteron-1. cm-2] Method 4. 0 E-01 3. 0 E-01 Kvinta 5 sections Kvinta 4 sections 2. 0 E-01 1. 0 E-01 0. 0 E+00 0. 0 9 10. 0 20. 0 30. 0 40. 0 50. 0 Longitudinal distance [cm] 60. 0 70. 0

Kvinta neutron distribution Kvinta 5 & 4 sections setup radial neutron distribution Setup 5. 0 E-01 Results • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion Neutrons [deuteron-1. cm-2] Method 4. 0 E-01 3. 0 E-01 Kvinta 5 sections Kvinta 4 sections 2. 0 E-01 1. 0 E-01 0. 0 E+00 0. 0 10 2. 0 4. 0 6. 0 8. 0 10. 0 Radial distance [cm] 12. 0 14. 0

Kvinta neutron spectra Kvinta 5 & 4 sections setup neutron spectra Setup Method • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion Neutrons [deuteron-1. cm-2] Results 1. 0 E-01 1. 0 E-02 1. 0 E-03 1. 0 E-04 1. 0 E-05 1. 0 E-06 1. 0 E-07 1. 0 E-04 1. 0 E-03 1. 0 E-02 1. 0 E-01 1. 0 E+00 1. 0 E+01 1. 0 E+02 1. 0 E+03 1. 0 E+04 Neutron energy [Me. V] 11

Simulated multiplicity – various models Kvinta 5 sections setup neutron multiplicity Setup 300 Results 250 • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion Neutron multiplicity [-] Method 200 Bertini-ABLA 150 CEM 03 Bertini-Dresner INCL-ABLA 100 INCL-Dresner ISABEL-ABLA 50 ISABEL-Dresner 0 0 12 1000 2000 3000 Deuteron energy [Me. V] 4000 5000

Simulated multiplicity – various models Kvinta 5 sections setup neutron multiplicity per Ge. V Setup 70 Results • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion Neutron multiplicity per Ge. V [-] Method 60 50 Bertini-ABLA 40 Bertini-Dresner 30 INCL-ABLA 20 INCL-Dresner 10 ISABEL-Dresner CEM 03 ISABEL-ABLA 0 0 13 1000 2000 3000 Deuteron energy [Me. V] 4000 5000

Neutron multiplicity from various models Setup Method Results • neutron distribution • neutron spectra • MCNPX models • Multiplicity in various models Conclusion 14 Kvinta Model 5 sections 4 sections 3 sections + Pb 1 Ge. V 2 Ge. V Bertini-ABLA 56. 4 115. 7 54. 6 112. 5 57. 4 116. 2 Bertini-Dresner 53. 4 108. 9 51. 8 106. 1 54. 4 109. 7 CEM 03 58. 5 118. 3 56. 7 115. 2 57. 4 114. 7 INCL-ABLA 54. 0 112. 6 52. 2 108. 4 54. 9 113. 8 INCL-Dresner 54. 0 112. 6 52. 2 108. 4 54. 9 113. 8 ISABEL-ABLA 56. 8 113. 6 54. 8 110. 3 57. 6 114. 5 ISABEL-Dresner 52. 8 105. 8 51. 3 102. 7 54. 1 106. 7

Conclusion Setup § made detailed model of the new Kvinta setup consisting of Method uranium target and blanket Results § calculated neutron multiplicity of several modifications of the new Kvinta setup Conclusion § simulated neutron spectra in diverse positions in the new Kvinta setup § studied dependency on various physics models included in MCNPX 15

Thank you for your attention 16