• L. Weissman, D. Berkovits, Y. Eisen, S. Halfon, I. Mardor, A. Perry, J. Rodnizki
  Soreq NRC, Yavne
• K. Dunkel, D. Trompetter, P. vom Stein
  ACCEL, Bergisch Gladbach
• C. Piel
  RI Research Instruments GmbH, Bergisch Gladbach

The first phase of the SARAF high current proton/deuteron accelerator facility is currently under commissioning. Along with traditional beam diagnostics instruments, a beam halo measuring station was implemented into the SARAF diagnostic plate. The beam halo is planned to be characterized using a mini Faraday cap, on-line and off-line measurements of radiation from LiF target crystals and by monitoring energy spectra of Rutherford scattered particles from a thin gold foil. The first experience with 3 mA, pulsed proton beam included measuring energy spectra of the protons at energies up to 2.2 MeV scattered at 45 degrees from a 0.3 mg/cm² thick gold foil. The beam was accelerated by SARAF RFQ and by several cryogenic resonators in the SARAF Prototype Superconductive Module. The energy spectra of the scattered particles were taken for different RFQ voltages and for different voltages and phases of the PSM resonators. The results were compared with time of flight measurements utilizing two phase probes installed at the D-plate. Comparison of the experimental spectra with results of the TRACK Monte-Carlo simulations was also performed.