The beam halo monitor of SARAF

I. Mardor, D. Berkovits, Y. Eisen, G. Haquin, D. Hirschmann, E. Meroz, O. Heber, M. Hass, Y. Shachar

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations


A major requirement for the SARAF accelerator [1] is 'hands-on' maintenance, which implies a maximum beam loss of 1 nA per meter. In Phase I of SARAF (4-5 MeV ions at 2 mA), we need to map the beam halo (BH) down to below 1 nA in order to predict, using beam dynamics calculations, the beam loss in the full accelerator. Mapping the halo of a 4 MeV, 2 mA ion beam down to below 1 nA is unprecedented. We have therefore developed a BH monitor, which incorporates a direct charge measurement as well as several nuclear techniques, including Rutherford scattering on gold, 7Li(p,n)7Be leading to both neutrons and the radio-isotope 7Be (measured offline post irradiation) and 19F(p,α)16O leading to high energy gamma rays, with the BH current being derived by using published cross sections. In this paper, we present the SARAF Phase I BH monitor and describe the various measurement techniques. In addition, results of feasibility studies at the Koeffler Pelletron accelerator of the Weizmann Institute are given.

Original languageEnglish
Number of pages3
StatePublished - 1 Dec 2006
Externally publishedYes
Event23rd International Linear Accelerator Conference, LINAC 2006 - Knoxville, TN, United States
Duration: 21 Aug 200625 Aug 2006


Conference23rd International Linear Accelerator Conference, LINAC 2006
Country/TerritoryUnited States
CityKnoxville, TN

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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