Author: Shor, A.
Paper Title Page
MO1A01 Operational Experience and Future Goals of the SARAF Linac at SOREQ 100
  • D. Berkovits, A. Arenshtam, Y. Ben Aliz, Y. Buzaglo, O. Dudovich, Y. Eisen, I. Eliyahu, G. Feinberg, I. Fishman, I. Gavish, I.G. Gertz, A. Grin, S. Halfon, D. Har-Even, Y.F. Haruvy, T. Hirsch, D. Hirschmann, Z. Horvitz, B. Kaizer, D. Kijel, A. Kreisel, G. Lempert, J. Luner, I. Mardor, A. Perry, E. Reinfeld, J. Rodnizki, G. Shimel, A. Shor, I. Silverman, L. Weissman, E. Zemach
    Soreq NRC, Yavne, Israel
  SARAF-phase 1 at SOREQ, with its single 6 half-wave resonators cryomodule, is the first high current, superconducting low-beta linac in operation and it is presently delivering cw proton beams in the mA range. A phase 2 is foreseen for this linac which will allow acceleration up to 40 MeV of 2 mA cw proton and deuteron beams. The project status, the operational experience and the future goals of SARAF should be described.  
slides icon Slides MO1A01 [3.276 MB]  
THPB094 Performance of Beam Chopper at SARAF via RF Deflector Before the RFQ 1038
  • A. Shor, D. Berkovits, I. Fishman, A. Grin, B. Kaizer, L. Weissman
    Soreq NRC, Yavne, Israel
  We describe performance of a beam chopper at the SARAF accelerator consisting of an HV deflector preceding the RFQ. The deflector and electronics, developed at LNS Catania, was designed to provide slow beam chopping for beam testing and diagnostics where low beam power is necessary. The HV deflector sweeps away the low energy beam onto a water cooled beam catcher, while a fast HV switch momentarily switches off the HV whenever a transmitted beam to the RFQ is desired. We report on measurements with this chopping system, where minimum transmitted beam pulse of 180 ns duration is attained with a rise and fall time of several nano-seconds. We performed beam dynamics simulations of SARAF Phase-I, including the deflector, where the short rise and fall times of the chopped beam is attributed to the tight collimation of the deflected beam provided by the RFQ and the fast Faraday Cup. We also describe beam dynamics simulations which suggest that single RFQ bunch selection can be achieved with the existing chopping system, during zero-crossover for positive-negative deflecting HV waveform.