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- C. Deibele, S. Assadi, V.V. Danilov, S. Henderson, M.A. Plum, C. Sibley III
ORNL, Oak Ridge, Tennessee
- S. Breitzmann, S.-Y. Lee
IUCF, Bloomington, Indiana
- J.M. Byrd
LBNL, Berkeley, California
- J.D. Gilpatrick, R.J. Macek, R.C. McCrady, J.F. Power, J. Zaugg
LANL, Los Alamos, New Mexico
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The PSR (Proton Storage Ring) at LANSCE has observed an E-P (electron-proton) instability. A wideband analog feedback damper system was designed and implemented that has shown it is possible to correct this instability. The damper system consists of two 180 degree hybrids, low level amplifiers, a delay line, comb filter, power amplifiers, and adjustable delay lines. The system bandwidth is about between 10-300 MHz, and was developed and implemented in stages showing improvement in the e-p threshold of the buncher voltage. The system takes advantage of fiber optic technology for delays as well as for the comb filter. A system description and some measurement results are presented.
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