Title: Design of a Bunching System for a High-Intensity Electron Linac
Abstract: The Advanced Light Source, under construction at the Lawrence Berkeley Laboratory, will use a 50 MeV, 3 GHz linac as preinjector. The linac will operate in two modes---a single-bunch mode of 4 nC/pulse and a 100--150 nanosecond multibunch mode with 125 mA average current. In both modes an rms momentum spread of <0.3% is needed. The linac injection system consists of a high-intensity gun, followed by two subharmonic bunchers (one of 1/24th, and the other of 1/6th the linac frequency), an S-band buncher at the linac frequency and the first few cavities of the linac (the capture section). The beam experiences strong space-charge forces and nonlinearities which cause emittance growth. Expected performance is analyzed with computer simulations. 6 refs., 5 figs.
Publication Year: 1988
Publication Date: 1988-06-01
Language: en
Type: article
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Cited By Count: 2
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