Speaker
Description
A high-gradient energy booster linear accelerator (linac) is under investigation to increase the proton beam energy from 800 MeV to 3-5 GeV for the Proton Radiography (pRad) facility at Los Alamos Neutron Science Center (LANSCE). The increased beam energy is expected to enhance the resolution of radiography by one order of magnitude. We are evaluating a compact and cost-effective architecture involving normal-conducting radiofrequency (NCRF) accelerating structures operating at liquid-nitrogen temperature; this linac will operate with short RF pulses at very low duty. The proposed pRad booster linac comprises an initial L-band structure for beam capture and compression, S- and C-band main linac sections, and an L-band debuncher at the end, which may be employed for reducing the energy spread of the beam, depending on pRad operation requirements. In this project, we are developing S- and C-band prototypes for testing under cryogenic conditions for evaluating their high-gradient performance. We are meanwhile evaluating beam dynamics design options for the booster linac and performing initial proton radiography simulations.
| Working group | WG4 |
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