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Macek, R.J.

Paper Title Page
THPCH130 Design and Implementation of Analog Feedback Damper System for an Electron-proton Instability at the Los Alamos Proton Storage Ring 3104
 
  • 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
 
  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.