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- Y. Kim
- M. D. Busch, P. Wang, W. Wu, Y. K. Wu
FEL/Duke University, Durham, North Carolina
- J. Choi, I. S. Ko, I. S. Park
PAL, Pohang, Kyungbuk
- D. Teytelman
Dimtel, Redwood City, California
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To increase intensity of the High Intensity Gamma-ray Source (HIGS) which is driven by the Duke storage ring FEL via Compton scattering, stored beam current should be increased. However, high-current multi-bunch operation in the Duke storage ring is limited by strong longitudinal coupled-bunch beam instabilities. To control those instabilities, we have been developing an active longitudinal feedback system which is based on the Integrated Gigasample Processor (iGP) through collaboration with Dimtel, Inc. and Pohang Accelerator Laboratory. In this paper, we report the present status of our longitudinal feedback system.
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