04 Hadron Accelerators

A07 Electrostatic Accelerators

Paper Title Page
TUPLS028 An Irradiation System for Carbon Stripper Foils with 750 keV H- Beams 1550
 
  • A. Takagi, Y. Arakida, Z. Igarashi, K.I. Ikegami, C. Kubota, I. Sugai, Y. Takeda
    KEK, Ibaraki
  • S. Dairaku, N. Saito, A. Sato, K. Senzaki
    Kyoto University, Kyoto
  • Y. Irie
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
 
  Carbon stripper foils of around 300 ug/cm2 will be used as a stripping of H-ion beam of the 3 GeV Rapid Cycling Synchrotron in the J-PARC. The foil should have a long lifetime with mechanically strong against high temperature of 1800K due to high-energy deposition by high intensity H-ion and circulating bunched proton beam irradiations. For this purpose, we have installed a new irradiation system using high intensity pulsed and dc H-beams of the KEK 750keV Cocksfoot-Walton accelerator. By adjusting the peak intensity and the pulse length of the hydrogen beams appropriately, the energy deposition becomes equivalent to that exerted by the incoming H- and the circulating beams at the injection process of the RCS. The new irradiation system and some preliminary results of the carbon stripper foil will be reported.  
TUPLS029 Optical Scheme of an Electrostatic Storage Ring 1553
 
  • V. Aleksandrov, Yu. Kazarinov, V. Shevtsov
    JINR, Dubna, Moscow Region
  • R. Doerner, H. Schmidt-Boecking, K.E. Stiebing
    IKF, Frankfurt-am-Main
  • A. Schempp
    IAP, Frankfurt-am-Main
 
  We consider the optical scheme of an electrostatic storage ring for low energy heavy ions/molecules* with special requirements to type of optical functions. Results of calculation are presented.

*C. P. Welsch et al. Proc. of PAC’03, 12-16 May 2003, Portland, Oregon, USA, p.1622.

 
TUPLS063 Layout of the USR at FLAIR 1636
 
  • C.P. Welsch, C.P. Welsch
    CERN, Geneva
  • M. Grieser, J. Ullrich, A. Wolf
    MPI-K, Heidelberg
 
  The Facility for Low-energy Antiproton and Ion Research (FLAIR) and a large part of the wide physics program decisively rely on new experimental techniques to cool and slow down antiprotons to 20 keV, namely on the development of an ultra-low energy electrostatic storage ring (USR). The whole research program connected with anti-matter/matter interactions is only feasible if such a machine will be realized For the USR to fulfil its key role in the FLAIR project, the development of novel and challenging methods and technologies is necessary: the combination of the electrostatic storage mode with a deceleration of the stored ions from 300 keV to 20 keV, electron cooling at all energies in both longitudinal and transverse phase-space, bunching of the stored beam to ultra-short pulses in the nanosecond regime and the development of an in-ring reaction microscope for antiproton-matter rearrangement experiments. In this contribution, the layout and the expected beam parameters of the USR are presented and its role within FLAIR described. The machine lattice and the cooler parameters are summarized.