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Pasini, M.

Paper Title Page
THP033 Superconducting Sputtered Nb/Cu QWR for the HIE-ISOLDE Project at CERN 827
 
  • S. Calatroni, P. Costa Pinto, A. D'Elia, L.M.A. Ferreira, G. Lanza, M. Pasini, M. Scheubel, M. Therasse
    CERN, Geneva
  • R.E. Laxdal, V. Zvyagintsev
    TRIUMF, Vancouver
  
 

For the foreseen intensity and energy upgrade of the ISOLDE complex at CERN (HIE-ISOLDE project) a new superconducting LINAC based on sputtered Nb/Cu Quarter Wave Resonators (QWRs) of two different beta families will be installed in the next three to five years. A prototype cavity of the higher beta family is currently being developed. In this paper we will discuss the latest developments on the sputtering technique for this kind of cavity geometry. First cold RF measurements will be reported.

  
THP089 Beam Dynamics Studies of the REX-ISOLDE Linac in Preparation for its Role as Injector for the HIE-ISOLDE SC Linac at CERN 950
 
  • M.A. Fraser, R.M. Jones
    UMAN, Manchester
  • M.A. Fraser, M. Pasini, D. Voulot
    CERN, Geneva
  
 

The superconducting High Intensity and Energy (HIE) ISOLDE linac will replace most of the existing accelerating infrastructure of the Radioactive ion beam EXperiment (REX) at CERN, however, the 101.28 MHz RFQ and 5 MV IH cavity will remain in the role of injector for the upgrade, boosting the beam up to an energy of 1.2 MeV/u. We present the results of a beam dynamics investigation of the injector focused most critically on matching the longitudinal beam parameters from the RFQ to the SC machine, which is complicated largely by the IH cavity employing a Combined Zero Degree* (KONUS) beam dynamics design. The longitudinal beam parameters at the RFQ are reconstructed from measurement using the three-gradient method and combined with beam dynamics measurements and simulations of the IH structure to design the matching section for the SC linac.


*Ratzinger, U., "The IH-structure and its capability to accelerate high current beams," Particle Accelerator Conference, 1991