Abstract
The University of Washington Nuclear Physics Laboratory has designed a superconducting linac booster with an equivalent dc accelerating voltage of 24.35 MV, which will be injected by the existing FN tandem Van de Graaff accelerator. The design is based on the lead-plated copper quarter-wave resonator units developed by the Stony Brook/Weizmann group. The UW booster, unlike previous designs, will accelerate p, d, t, 3He, and 4He as well as light heavy ions ( A < 56). Design studies of system performance give proton energies of almost 38 MeV and energies for light-heavy ions of over 15 MeV/amu, diminishing with A to about 7 MeV/amu for 56Fe (assuming most probable charge). Beam dynamics studies show that debunching gives ΔE/E ⋍ 10 −4 or about 5 keV for protons, and bunching gives a time resolution on target of about 40–60 ps. The UW Booster Project has been recommended by NSAC and is to be funded in the FY'84 and FY'85 budgets of the US Department of Energy at a cost of about $8 million. Final planning and development are now in progress; construction is to begin in late 1983.
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