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Borburgh, J.

Paper Title Page
TUPD002 Development of an Eddy Current Septum for LINAC4 1434
 
  • M. J. Barnes, B. Balhan, J. Borburgh, T. Fowler, B. Goddard, W. J.M. Weterings
    CERN, Geneva
  • A. Ueda
    KEK, Ibaraki
 
  The bump for the new PS Booster injection from the future Linac4 will be made up of a set of four pulsed dipole magnets; the first of these (BS1) must act as a septum with a thin element dividing the high-field region of the circulating beam from the field-free region through which the injected H- beam must pass. BS1 will provide a deflection of 66 mrad at 160 MeV; this will be achieved with a peak field of 630 mT and a length of 200 mm. The field must rise and fall in 40 microseconds and have a flattop of up to 120 microseconds. The ripple of the flattop should be below ±1%. This paper discusses the design of an eddy current septum for BS1.  
WEPC141 Septa and Distributor Developments for H- Injection into the Booster from Linac4 2338
 
  • J. Borburgh, B. Balhan, T. Fowler, M. Hourican, W. J.M. Weterings
    CERN, Geneva
 
  The construction of Linac4 requires the modification of the existing injection system of the CERN PS Booster. A new transfer line will transport 160 MeV H- ions to this machine. A system of 5 pulsed magnets (BIDIS) and 3 vertical septa (BISMV) will distribute and inject the Linac pulses into the four-vertically separated Booster rings. Subsequently the beam will be injected horizontally, using a local bump created with bumpers (BS magnets) to bring the injected H- beam together with the orbiting proton beam onto the stripper foil. To accommodate the injected H- beam, the first of the BS magnets will have to be a septum like device, deflecting only the orbiting beam. This paper highlights the requirements and technical issues and describes the solutions to be adopted for both the BIDIS and BISMV. The results of initial prototype testing of the BIDIS magnet will also be presented.