Abstract
In the past few years, the pulse stretcher ring (PSR) concept has emerged as a viable method for extending the duty factor of pulsed linacs. The viability is a result of considerations such as cost and expected extracted beam quality. A few of the projects emphasize high average extracted beam intensity. This is accomplished through a high injection frequency (1 kHz) and relatively high injected peak currents (greater than or equal to80mA). To enhance the injection efficiency, the number of turns of injection are minimized so the ring is long and there are fewer turns for extraction. There is considerable experience with beam extraction over large numbers of turns from synchrotrons, but time uniform extraction over fewer turns has not been treated as thoroughly. In this paper, some of the extraction calculations made for the proposed MIT-Bates One-GeV Pulse Stretcher Ring are discussed. The theory used for the simulation procedure will be reviewed, the results summarized, and some points of operational interest mentioned.
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