Author: Grabski, M.J.
Paper Title Page
TUPS016 Vacuum System Design for the MAX IV 3 GeV Ring 1554
  • E. Al-dmour, D. Einfeld, J. Pasquaud, M. Quispe
    CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
  • J. Ahlbäck, M.J. Grabski, P.F. Tavares
    MAX-lab, Lund, Sweden
  We describe the conceptual design of the vacuum system of the 3 GeV electron storage ring in the MAX IV facility currently under construction in Lund, Sweden. The standard vacuum chambers are for the most part a cylindrical copper tube with 11 mm inner radius whereas stainless steel will be used at selected locations for beam position monitors, bellows and corrector vacuum chambers. In order to cope with the low vacuum conductance, distributed pumping will be provided through NEG coating of all chambers, including those in dipole magnets making MAX IV the first storage ring to be fully NEG coated. We present the mechanical and thermal design of these chambers and discuss the challenges involved in extracting insertion device radiation as well as coping with the heat load from both IDs and bending magnets in a machine with large bending radius, narrow chambers and tight mechanical tolerance requirements.