| Paper |
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| TUOCG03 |
Proposal for a ½ MW Electron Linac for Rare Isotope and Materials Science
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985 |
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- S. R. Koscielniak, P. G. Bricault, B. Davids, J. Dilling, M. Dombsky
TRIUMF, Vancouver
- D. Karlen
Victoria University, Victoria, B. C.
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TRIUMF, in collaboration with university partners, proposes to construct a megawatt-class electron linear accelerator (e-linac) as a driver for U(gamma,f) of actinide targets with rates up to 1013 - 1014 fissions/sec and for (gamma,p)8Li for materials science. The particular emphasis would be on neutron-rich species. The 50 MeV, 10 mA, c.w. linac is based on super-conducting radio-frequency (SRF) technology at 1.3 GHz. Though high power/current electron linacs are a mature technology proposed elsewhere for applications ranging from 4th generation light-sources to TeV-scale linear colliders, TRIUMF is in the vanguard for applying this technology to the copious production of isotopes for studies of (i) nuclear structure and astrophysics; and (ii) beta-NMR for materials science.
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Slides
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| TUPP147 |
Accelerator Driven Systems for Energy Production and Waste Transmutation
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1854 |
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- C. Bungau, S. C. Tygier
Manchester University, Manchester
- R. J. Barlow
UMAN, Manchester
- R. Cywinski
University of Leeds, Leeds
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Due to their inherent safety features and waste transmutation potential, accelerator driven subcritical reactors (ADSRs) are the subject of research and development in almost all countries around the world. The neutrons needed to sustain fission are generated by the spallation process resulting from high energy protons impacting a target element installed at the centre of the core. In the present paper the possible benefits of FFAGs as accelerator drivers for ADSR systems are analysed. FFAGs afford fast acceleration as there is no need of synchronization between RF and magnets, high average current with large repetition rate and large acceptance. The present study also focuses on the Monte Carlo studies of the reactor core design. The impact of the subcriticallity, target material and proton beam energy on the ADSR performance was also examined. Entirely novel ADSR configurations involving multiple accelerator drivers and associated spallation targets within the reactor core have also been considered. Calculations were carried out using the GEANT4 simulation code.
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| TUPP148 |
Multigrid Negative Ion Source Test and Modeling
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1857 |
| |
- M. Cavenago
INFN/LNL, Legnaro, Padova
- V. Antoni, G. Serianni, P. Veltri
Consorzio RFX, Euratom ENEA Association, Padova
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Negative ion sources are a fundamental ingredient of neutral ion beam injectors for tokamak, like the ITER project and beyond. While detail of formation of negative ions and meniscus of the plasma beam interface at source extraction at source extraction is still debated, reasonable modelling of the beam extraction is well possible. A project of a small source (up to 9 beamlet of 15 mA each of H-, 60 kV acceleration voltage) is here described, and relevant modeling tools are reviewed. Power load deposition on the extraction grid (about 1.5 kW total) and on the source walls (comparable) need accurate cooling design. The extracted beam is direclty useful for wall damage studies.
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