Author: Belver-Aguilar, C.
Paper Title Page
MOPA01 Design Study of the Striplines for the Extraction Kicker of the CLIC Damping Rings 1
 
  • C. Belver-Aguilar, A. Faus-Golfe
    IFIC, Valencia, Spain
  • M.J. Barnes
    CERN, Geneva, Switzerland
  • F. Toral
    CIEMAT, Madrid, Spain
 
  Pre-Damping Rings (PDRs) and Damping Rings (DRs) are needed to reduce the beam emittance and, therefore, to achieve the luminosity requirements for the CLIC main linac. Several stripline kicker systems will be used to inject and extract the beam from the PDRs and DRs. Results of initial studies of the stripline cross-section and the beam coupling impedance, for a non-tapered beam pipe, have previously been reported. In this paper, we present the analysis to study the final choice of the cross-section design, based on impedance matching and field inhomogeneity requirements, the power reflected in the transition between an electrode and the input coaxial feedthrough, and the predicted beam coupling impedance. Mechanical tolerances for the stripline manufacturing process are presently being studied. The striplines are planned to be prototyped by December 2012.  
 
TUPA20
Prototype Development of a Beam Position Monitor for Hadrontherapy Facilities and First Beam Test in the PS  
 
  • J.J. García-Garrigós, C. Belver-Aguilar, C. Blanch Gutierrez, A. Faus-Golfe
    IFIC, Valencia, Spain
  • M. Haguenauer, P. Poilleux
    LLR, Palaiseau, France
 
  Beam Position Monitors (BPM) are crucial to control the beam in Hadrontherapy accelerators, especially in the secondary transport lines towards the patient room where the beam position must be determined with high precision. In this paper we describe the design and construction of a first prototype based on four scintillating fibers coupled to one photodiode each, to detect the light produced by the fibers when intercepting the beam tails. The results of the first beam test using a 6GeV proton beam from the PS accelerator at CERN are also presented. This beam test, jointly with a previous calibration test done with a radioactive source, has been served to evaluate the different design options of the prototype and its read-out electronic setup in order to define the best processing method to get the beam position.