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| WEPP090 |
Accelerator Design for a 1/2 MW Electron Linac for Rare Isotope Beam Production
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2728 |
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- S. R. Koscielniak, F. Ames, I. V. Bylinskii, R. E. Laxdal, M. Marchetto, A. K. Mitra, I. Sekachev, V. A. Verzilov
TRIUMF, Vancouver
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TRIUMF, in collaboration with university partners, proposes to construct a megawatt-class electron linear accelerator (linac) as a photo-fission driver for radioactive ion beam production (RIB) for nuclear astrophysics studies and materials science. The design strategy, including upgrade path, for this cost-effective facility is elaborated. The 50 MeV, 10 mA, c.w. linac is based on TESLA/ILC super-conducting radio-frequency (SRF) technology at 1.3 GHz and 2K; and consists of an electron gun, buncher and capture sections, followed by 10 MeV and 40 MeV cryomodules containing one and four 9-cell cavities, respectively. Preliminary results from PARMELA beam dynamics simulations are presented. C. W. operation leads to challenges of large cryogenic heat load, input coupler power handling and beam loss mitigation similar to those encountered in ERL-based light sources. Unlike those sources there is no need for high beam brilliance, and a triode thermionic gun modulated at 1.3 GHz is employed; nor are short bunches required, and so the HOM excitation is modest. Many of the major sub-system components have been identified and where possible existing designs will be adopted.
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| THPP115 |
The Proposed ISAC-III Upgrade at TRIUMF
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3635 |
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- R. E. Laxdal, F. Ames, R. A. Baartman, P. G. Bricault, S. R. Koscielniak, M. Marchetto, M. Trinczek, F. Yan
TRIUMF, Vancouver
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Presently, the ISAC facility produces radioactive ions by a single driver beam of up to 100microA of 500MeV protons (50kW) impinging on either of two production targets which are configured such that only one radioactive ion beam (RIB) is available for use at any one time; and the experimental hours are shared between several facilities in the low energy and two accelerated beam experimental areas. The ISAC-III upgrade is proposed to increase the number of RIBs simultaneously available to three. The upgrade involves the addition of a high power electron linac, 50MeV/10mA, that would irradiate one of two new independent targets and produce RIBs through photo-fission. A second beamline from the existing cyclotron would deliver an additional 500MeV 200microA proton beam to the new target area to irradiate the second target producing the third simultaneous beam. The proposal includes an additional post-accelerator front-end to augment the existing infrastructure to provide the capability of accelerating two of the RIBs simultaneously. The paper summarizes the upgrade and discusses design choices to optimize nuclide availability across the three experimental areas.
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