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R&D ACTIVITIES ON ACCELERATOR-DRIVEN TRANSMUTATION SYSTEM IN JAERI Hiroyuki Oigawa , Kazufumi Tsujimoto, Kenji Kikuchi, Yuji Kurata, Toshinobu Sasa, Makoto Umeno, Shigeru Saito, Kenji Nishihara, Motoharu Mizumoto, Hideki Takano, and Nobuo Ouchi. Contents. Design Study of ADS

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  1. R&D ACTIVITIES ON ACCELERATOR-DRIVEN TRANSMUTATION SYSTEM IN JAERIHiroyuki Oigawa, Kazufumi Tsujimoto,Kenji Kikuchi, Yuji Kurata, Toshinobu Sasa, Makoto Umeno, Shigeru Saito, Kenji Nishihara, Motoharu Mizumoto, Hideki Takano, and Nobuo Ouchi 8th OECD/NEA Information Exchange Meeting on P&T

  2. Contents • Design Studyof ADS • R&D on Accelerator • R&D on Pb-Bi (LBE) Spallation Target and Coolant • R&D on Subcritical Reactor Physics • Transmutation Experimental Facility (TEF) in J-PARC Project • Transmutation Physics Experimental Facility (TEF-P) • ADS Target Test Facility (TEF-T) • Part of this work was funded by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) as one of the R&D programs for innovative nuclear systems. 8th OECD/NEA Information Exchange Meeting on P&T

  3. JAERI’s Reference ADS Proton beam • Proton beam : 1.5GeV • Spallation target : Pb-Bi • Coolant : Pb-Bi • Max. keff = 0.97 • Thermal output : 800MWt • MA initial inventory : 2.5t • Fuel composition : • (MA+Pu)Nitride + ZrN • Initial loading: • Zone-1: Pu/HM=30.0% • Zone-2: Pu/HM=48.5% • Transmutation rate : • 10%MA / Year • 600EFPD, 1 batch Primary pump Steam generator Inner barrel Beam duct Beam window Reactor vessel Core barrel 13.5m Guard vessel Core support structure 11.8m 8th OECD/NEA Information Exchange Meeting on P&T

  4. 3-year Program R&D for Future ADS without Proton Beam Feasibility Assessment International Collaboration Collaboration in Japan J-PARC Experimental Program using Proton Beam Experimental ADS and Commercial Plant Outline of the R&D Activities • 3-year Program: • Funded by MEXT for 2002-2004. • Including SC-LINAC, LBE, and Reactor Design for Future Plant. • J-PARC: • Phase-1 Accelerator is being constructed. • TEF is in Phase-2 (after completion of Phase-1) 8th OECD/NEA Information Exchange Meeting on P&T

  5. Collaboration in Japan Development of Superconducting LINAC High Energy Accelerator Research Organization (KEK) Mitsubishi Electric Corporation Development of Pb-Bi Target/Coolant Mitsui Engineering and Shipbuilding Co. Ltd. Japan Nuclear Cycle Development Institute (JNC) Hokkaido University Tohoku University Tokyo Institute of Technology Development of Subcritical Reactor Mitsubishi Heavy Industries Ltd. Nagoya University Kyoto University Research Reactor Institute 8th OECD/NEA Information Exchange Meeting on P&T

  6. Design Study : Neutronics • Keff: 0.97 – 0.94 Maximum beam : 1.5 GeV x 18 mA = 27 MW • In this study, 30MW is adopted, though 20MW will be sufficient in the equilibrium cycle. 8th OECD/NEA Information Exchange Meeting on P&T

  7. Beam duct support Proton beam Beam duct Beam window Core barrel Core region Reflector Target region Partition wall Flow control nozzle Coolant flow Support structure Design Study : Thermal-hydraulics(1) Spallation Target and Core Coolant • 30 MW proton beam with 1.5 GeV causes heat deposition of 15.7MW. • Partition wall • Flow control nozzle • Optimization of design parameters: • Inlet temp. : 300 ºC • Beam duct : 45cm 8th OECD/NEA Information Exchange Meeting on P&T

  8. 1.8m/s Outer surface temperature of beam window 490oC 470oC 450oC (unit: m/s) 2.0m/s 0.2m/s (unit: Kelvin) Design Study : Thermal-hydraulics (2) Analytical Results for Beam Window Flow speed Temperature • Maximum temperature of outer surface : 490 ºC • Flow control nozzle cools the bottom of the beam window effectively. 8th OECD/NEA Information Exchange Meeting on P&T

  9. R&D on Accelerator : SC-LINAC Vacuum vessel RF power coupler Liquid He vessel Superconducting Cavity 1.2m Superconducting cavity (9-cell) 4m 972 MHz Cryomodule 9-cell , (b=0.725) He vessel : Ti (2K) Maximum surface electric field > 30 MV/m Installed Cryomodule 8th OECD/NEA Information Exchange Meeting on P&T

  10. R&D on Accelerator : J-PARC(1) Site Plan Nuclear Physics Facility Material and Life Science Facility 3 GeV Synchrotron Transmutation Experimental Facility 500m 50 GeV Synchrotron (1500mL) LINAC (350mL) Phase-1: 400 MeV Phase-2: 600 MeV Neutrino Facility • J-PARC : Japan Proton Accelerator Research Complex • Construction of Phase-1 : 2001-2007 (except for some parts) • Transmutation Experimental Facility and 600 MeV LINAC are in Phase-2. 8th OECD/NEA Information Exchange Meeting on P&T

  11. R&D on Accelerator : J-PARC(2) Status of Construction Feb. 2004 8th OECD/NEA Information Exchange Meeting on P&T

  12. Sep. 2003 April 2004 Sep, 2004 R&D on Accelerator : J-PARC(3) LINAC Building 8th OECD/NEA Information Exchange Meeting on P&T

  13. R&D on Accelerator : J-PARC(4) LINAC Beam Test RFQ ( < 3 MeV) Drift Tube LINAC ( < 60 MeV) • Beam test is under way at KEK/Tsukuba up to 20 MeV, 30mA. • It will be moved to JAERI/Tokai 2005. 8th OECD/NEA Information Exchange Meeting on P&T

  14. 100 550 ºC, 3000 hr. Oxygen - saturated Ferrite Austenite Si-added 80 60 Corrosion Depth (mm) 40 20 0 0 5 10 15 20 Cr(wt%) R&D on LBE : Corrosion(1) Static Test JPCA 20mm 20mm Si-added steel • Ferrite : Corrosion film depends on the Cr content. • 5%Si –added steel exhibited fine corrosion resistance. 8th OECD/NEA Information Exchange Meeting on P&T

  15. Expansion Tank Air Cooler Test Section Drain Tank EM Pump R&D on LBE : Corrosion(2) Loop Test JAERI Pb-Bi Loop-1 (JLBL-1) Flow rate : 5L/min. Temperature : 450ºC MES Pb-Bi Loop Flow rate : 5L/min. Temperature : 500ºC • 3000 hr. continuous operations were successfully completed. • Test tubes were analyzed. • F82H (martensitic) and JPCA (austenitic) are being tested as candidate materials for beam window. 8th OECD/NEA Information Exchange Meeting on P&T

  16. R&D on LBE : Thermal-hydraulics at Beam Window Circulation Pump M Test Vessel Heater Perforated Plate Flow Meter Fl LBE Loop for Beam Window Block diagram • Heat transfer characteristics are being measured by changing flow rate (100-500 L/min.) and inlet temperature (330-430ºC) parametrically. LBE at Overflow Section 8th OECD/NEA Information Exchange Meeting on P&T

  17. R&D on LBE : Behavior of Radioactive Impurity Heater Sampling Heater Pb-Bi irradiation capsule Ar gas Po Irradiated Pb-Bi Heater Transpiration method • Production rate of Polonium (Po) in Pb-Bi was measured by irradiating Pb-Bi in JMTR. No large discrepancy was observed between the calculation and the measurement. • Evaporation rates of Tellurium (Te) from Pb-Bi were measured as a function of temperature to verify the experimental method. • Using the irradiated Pb-Bi, evaporation rates of Po is being measured. 8th OECD/NEA Information Exchange Meeting on P&T

  18. R&D on Subcritical Reactor Physics : Estimated uncertainty on k-eff of BOC of initial cycle Sensitivity of Nuclear Data to k-eff at the beginning of initial cycle • Uncertainty of reactor physics parameters are estimated by the sensitivity of nuclear data calculated by SAGEP code and the error files evaluated for JENDL-3.3. • Preliminary analysis showed that the capture reaction of Am-241 has significant effect on k-eff. 8th OECD/NEA Information Exchange Meeting on P&T

  19. Transmutation Experimental Facility (TEF) Transmutation Physics Experimental Facility : TEF-P ADS Target Test Facility : TEF-T 10W Critical Assembly 200kW Shield Pb-Bi Target Laser Charge Exchange 8th OECD/NEA Information Exchange Meeting on P&T

  20. Transmutation Physics Experimental Facility (TEF-P) : Fixed half assembly Fuel loading machine Movable shield Core Proton beam Movable half assembly Safety/control rod drive mechanism • Max. power : ~ 500W, Max beam : ~10 W (~1012n/s) • Experiments in critical state can also be performed. 8th OECD/NEA Information Exchange Meeting on P&T

  21. ADS Target Test Facility (TEF-T):Double-annular Type Pb-Bi Target Irradiation samples Target room • Liquid Target is contained in sealed-tube • Primary circuit devices are completely isolated • Safe and quick replacement is possible. • Material database can be established by changing irradiation conditions such as temperature, flow rates, beam intensity, oxygen concentration, etc. Pb-Bi Protons EM pump EM flowmeter Heat exchanger He 8th OECD/NEA Information Exchange Meeting on P&T

  22. Expected Schedule of TEF (Preliminary) • Check and Review (C&R) by Atomic Energy Commission will be necessary to start TEF. • Safety review is necessary for TEF-P before the construction and the manufacturing because it is a nuclear reactor facility. • R&Ds for TEF: • TEF-P: Instrumentation, Laser charge exchange • TEF-T: Pb-Bi technology, Material irradiation effect ▼Establishment of New Organization ▼Licensing of TEF-P C&R C&R 400MeV 180MeV 600MeV Safety review TEF-P R&D, Design Commissioning Construction TEF-T 8th OECD/NEA Information Exchange Meeting on P&T

  23. Summary • Wide range of R&D activities on ADS for transmutation are in progress. • Design Study of ADS (Neutronics, Thermal-hydraulics, Structure) • Accelerator (SC-LINAC, J-PARC Project) • Pb-Bi (LBE) (Corrosion, Thermal-hydraulics of Beam Window, Po) • Subcritical Reactor Physics • Transmutation Experimental Facility (TEF) in J-PARC Project • Transmutation Physics Experimental Facility (TEF-P) • ADS Target Test Facility (TEF-T) • To initiate TEF project, supports from foreign colleagues are greatly appreciated. 8th OECD/NEA Information Exchange Meeting on P&T

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