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Omet, C.

Paper Title Page
TUPAN013 FAIR Synchrotron Operation with Low Charge State Heavy Ions 1416
 
  • C. Omet, D. Hoffmann, P. J. Spiller
    GSI, Darmstadt
  
  Funding: Work supported by EU, contract No. 515876

Beam loss caused by charge changing process in connection with dynamic vacuum effects may limit the maximum number of accelerated heavy ions with low charge states in the existing synchrotron SIS18 and the planned SIS100/SIS300 of the FAIR project. With the aim to stabilize the vacuum dynamics and to control ionization beam loss, a substantial upgrade program has been defined for SIS18 and is presently realized. For SIS100, a new lattice design concept has been developed, where each lattice cell acts as a charge seperator and thereby enables the local control of beam loss. Simulation, conducted with the code STRAHLSIM, of the time dependent evolution of beam loss, dynamic residual gas pressure and the effect of the proposed dedicated ion catcher systems will be presented.

 
TUPAN015 Ion Optical Layout of the FAIR Synchrotron and Beam Line Systems 1422
 
  • J. Stadlmann, K. Blasche, B. J. Franczak, F. Hagenbuck, C. Omet, N. Pyka, S. Ratschow, P. J. Spiller
    GSI, Darmstadt
  • A. D. Kovalenko
    JINR, Dubna, Moscow Region
  
  The ion-optical layout of the two main synchrotrons and the high energy beam transport system of the FAIR project is summarized. SIS100 will be used to generate high intensity beams of all ion species from protons to uranium with a maximum rigidity of 100 Tm. The ion optical layout is optimized for the operation with heavy ions of medium charge states. For this purpose we developed a new ion optical design which provides a separation of the ionized beam particles from the circulating beam in each lattice cell. The chosen lattice structure provides a peaked loss distribution and enables the suppression of beam loss induced pressure bumps. Furthermore a compact layout of the extraction systems for slow and fast extraction at 100 Tm and 300 Tm has been developed. Since both synchrotrons are situated in the same tunnel, the SIS300 ion optical layout has to match the geometrical shape of the SIS100 precisely - although both rings use different lattice structures. The design of the beam transport system allows an effective parallel operation of the two synchrotrons, storage rings and experiments of the FAIR complex.  
TUPAN014 Status of the FAIR SIS100/300 Synchrotron Design 1419
 
  • P. J. Spiller, U. B. Blell, H. Eickhoff, E. Fischer, E. Floch, P. Hulsmann, J. E. Kaugerts, M. Kauschke, H. Klingbeil, H. G. Koenig, A. Kraemer, D. Kramer, U. Laier, G. Moritz, C. Omet, N. Pyka, H. Ramakers, H. Reich-sprenger, M. Schwickert, J. Stadlmann
    GSI, Darmstadt
  • A. D. Kovalenko
    JINR, Dubna, Moscow Region
  
  The project status of the main accelerators, the SIS100 and SIS300 synchrotrons of the FAIR project will be presented. In order to accommodate more preferable technical solutions, the structure of the magnet lattice had to be modified in both machines. After these changes, more appropriate technical solutions for the main magnets and quench protection systems could be adapted. The general machine layout and design, e.g. of the demanding extraction schemes, has been detailed and open design issues were solved. The developments and design of all major technical systems are in progress and prototyping has started or is in preparation.  
THPAN016 Improving the SIS18 Performance by use of the Orbit Response Method 3256
 
  • A. S. Parfenova, G. Franchetti, I. Hofmann, C. Omet
    GSI, Darmstadt
  • S.-Y. Lee
    IUCF, Bloomington, Indiana
  
  The SIS18 will be used as a booster for the new FAIR facility SIS100. A well-controlled linear optics of the SIS18 is necessary for further optimisation studies of nonlinear dynamics, resonance induced beam loss, dynamic aperture and nonlinear error measurements. The analysis of the orbit response matrix (ORM) is a powerful tool to calibrate the linear lattice models. We present results of several measurements on the SIS18 using the ORM and discuss the achieved improvement of the SIS18 performance.