Author: Boine-Frankenheim, O.
Paper Title Page
WEPEA008 Influence of Higher Order Phase Slip Factor Contributions on Beam Loss during SIS-100 Proton Operation 2507
  • S. Sorge, O. Boine-Frankenheim, G. Franchetti
    GSI, Darmstadt, Germany
  The projected FAIR synchrotron SIS-100 is envisaged to accelerate intense proton and heavy-ion beams. The maximum proton energy will be E=29 GeV. In order to stay below transition energy a special powering scheme of the quadrupoles has been introduced which provides a maximum transition gamma of 45.5. The resulting settings of the quadrupole focusing strengths generate large maxima of the horizontal beta and dispersion functions. In particle tracking simulation we observed beam loss caused by a large momentum spread in the deformed rf bucket close to transition. Application of the chromaticity correction sextupoles led to a reduction of the first-order phase slip factor term and of the beam losses. In this contribution we will analyze the effect of the sextupoles on the higher-order components of the phase slip factor. The rf bucket shape will be discussed as well as the transverse beam loss and possible longitudinal instabilities.  
THPWO011 Status of the SIS100 Heavy Ion Synchrotron Project at FAIR 3782
  • P.J. Spiller, U. Blell, O. Boine-Frankenheim, L.H.J. Bozyk, E.S. Fischer, E. Floch, F. Hagenbuck, F. Hehenberger, M. Kauschke, O.K. Kester, A. Klaus, H. Klingbeil, H.G. König, P. Kowina, J.P. Meier, P. Moritz, C. Mühle, C. Omet, D. Ondreka, N. Pyka, H. Ramakers, P. Schnizer, J. Stadlmann, K. Sugita, D. Theuerkauf, B. Walasek-Höhne, St. Wilfert
    GSI, Darmstadt, Germany
  SIS100 is a unique superconducting heavy ion synchrotron, optimized for the acceleration of intense beams of intermediate charge state heavy ions. The operation with such beams has required new synchrotron design features and new technical concepts aiming for minimized ionization beam loss and vacuum dynamics. SIS100 is a superconducting synchrotron because of the required vacuum conditions and pumping power to achieve stable XHV conditions at high intensity operation. The project and procurement status will be presented.