| Paper |
Title |
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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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| THPP060 |
Simultaneous Extraction of Two Stable Beams for ISAC
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3503 |
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- G. Dutto, R. A. Baartman, P. G. Bricault, I. V. Bylinskii, A. Hurst, R. E. Laxdal, Y.-N. Rao, L. W. Root, P. Schmor, G. M. Stinson
TRIUMF, Vancouver
- J. M. Schippers
PSI, Villigen
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The TRIUMF cyclotron was originally conceived for several proton beams extracted simultaneously at different energies. Recent operation includes a 500 MeV beam up to150 μA for meson users, a 500 MeV beam up to 80 μA for rare isotope production, and a 100 MeV beam up to 70μA for medical isotopes. The extraction of an additional high intensity proton beam, at an energy between 450 and 500 MeV for ISAC has now been given priority. With the rare ions produced from the existing and future primary beam lines, we will be able to operate two of the existing experimental areas simultaneously. Upgrading the cyclotron for higher intensity is in progress. A necessary goal for ISAC is the extraction of both primary proton beams with stability better than 1% to allow the highest possible temperatures to be reliably maintained at the ion production targets. A successful solution implemented for the existing primary ISAC beam has been simulated to be adaptable for both primary beams, given the particular angular separation between the two strippers in the cyclotron. Progress on intensity and stability studies and the layout of the extraction system will be presented.
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