1 / 13

Nuclear data: fission yields, decay heat and neutron reaction cross sections:

Nuclear data: fission yields, decay heat and neutron reaction cross sections: A Proposal for a Nuclear Data Consortium Universities of Manchester, Surrey & York. 3 Strands. nTOF TAS STEFF. Nuclear Data: Collection, Dissemination and Usage. Industrial Nuclear Data.

suzuki
Download Presentation

Nuclear data: fission yields, decay heat and neutron reaction cross sections:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nuclear data: fission yields, decay heat and neutron reaction cross sections: A Proposal for a Nuclear Data Consortium Universities of Manchester, Surrey & York

  2. 3 Strands nTOF TAS STEFF

  3. Nuclear Data: Collection, Dissemination and Usage Industrial Nuclear Data Academic Nuclear Data mostly for physics UK Nuclear Industry Codes. Reactors. Databases. Safety. WPEC (NEA OECD) ENDF (USA) BROND (Former USSR) JENDL (Japan) JEFF (Europe) Private Companies: Serco, Studsvik of America, CEA, etc.

  4. nTOF: Class A International Facility

  5. nTOF Recruit Research Fellow (C-NET) Formally join nTOF. Contribute to equipment, target material, join in running experiment shifts and analysis work. Network York, (NNL support for Manchester activities) Support data evaluation effort, dissemination. Interests: initially with neutron capture cross section measurements relevant to current and new generation reactors as identified in NEA High Priority Request List (238U, 241Am, 243Am) New proposal to the INTC PAC in Nov 2010: Fission of 240/242Pu, 245Cm, 232/234Th, 238U, Ratio( 238U/235U ). Later through consultation.

  6. Fission fragment spectrometer “STEFF” (running off-line at Manchester with 252Cf – later moves to GANIL - NFS)

  7. ~£250 k already invested Current Mass resolution ~4% Upgrade: increase T by factor 3 Anode signal After digital filtering Noise < 0.2% Novel Digital Pulse-shape analysis Low-noise energy measurements Z sensitivity ~ 1/40

  8. STEFF Upgrade and NFS Programme Increase FF flight path to 3m Maintain solid angle Obtain mass resolution ~ 1% After discussions with NNL, suggest: 238U, 239Pu and 237Np, En=1-20 MeV.

  9. Lucrecia, Total Absorption Gamma Spectrometer at CERN / Jyvaskyla • A large NaI cylindrical crystal38 cm Ø, 38cm length • An X-ray detector (Ge) • A  detector • Collection point inside the crystal TAGS response for 22Na source and Monte Carlo

  10. TAS Programme Significant discrepancies (i.e. factors of 2-3 in some cases) between JEFF and TAGS Proposed: 89,90Kr, 96Y, 99,100Zr, 98,99,102Nb, 103Mo, 103Tc, 132Sb, 135Te, 136,136mI, 139,140Xe, and 143La. (WPEC Priority-1 Nuclei)

  11. nTOF nTOF Collaboration D. Jenkins Student York JEFF etc. Manchester J. Billowes + NDA Student Manchester R.F. (C-NET) R. Mills (V.F, NNL) A.G. Smith NFS P. Regan Z. Podolyak Student W. Gelletly A. Nichols Surrey STEFF TAS TAS Collaboration UKNSF: Nichols (Chair), Mills, Billowes, Regan.

  12. Project Workplan

  13. Required Resources • 2 studentships • Staff effort • nTOF subscription • STEFF upgrade capital • Travel and subsistence • Cost to EPSRC: £533 k • Deliverables • Fission yield measurements • Upgraded STEFF • TAS results: • nTOF results: • at least 2 trained students in nuclear data • Contribution to databases • Benefits • Better links between academia and nuclear data community • Better links between academics interested in applied physics • Reengagement of UK with international nuclear data effort • Increased UK international profile • Improved applied infrastructure • Support and enhancement of UK nuclear physics expertise

More Related