Author: Woolley, B.J.
Paper Title Page
THPIK095 High Power X-Band Generation Using Multiple Klystrons and Pulse Compression 4311
 
  • B.J. Woolley, T. Argyropoulos, N. Catalán Lasheras, G. McMonagle, S.F. Rey, I. Syratchev, W. Wuensch
    CERN, Geneva, Switzerland
  • D. Esperante Pereira
    IFIC, Valencia, Spain
  • J. Tagg
    National Instruments Switzerland, Ennetbaden, Switzerland
  • M. Volpi
    The University of Melbourne, Melbourne, Victoria, Australia
  
  CERN has constructed and is operating a new X-band test stand containing two pairs of 12 GHz, 6 MW klystrons. By power combination through hybrid couplers and the use of pulse compressors, up to 45 MW of peak power can be sent to any of 4 test slots at pulse repetition rates up to 400 Hz. The test stand is dedicated to RF conditioning and testing of high gradient accelerating structures for the CLIC study and also future X-band FELs. Operations have been ongoing for a few months, with initial operation dedicated to control algorithm development. Significant progress has been made in understanding the unique challenges of high power RF combination and phase switching using RF hybrids.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK095  
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THPIK097 High Power Tests of a Prototype X-Band Accelerating Structure for CLIC 4318
 
  • R. Zennaro, H. Blumer, M. Bopp, T. Garvey, L. Rivkin
    PSI, Villigen PSI, Switzerland
  • T. Argyropoulos, D. Esperante Pereira
    IFIC, Valencia, Spain
  • N. Catalán Lasheras, A. Grudiev, G. McMonagle, A. Solodko, I. Syratchev, R. Wegner, B.J. Woolley, W. Wuensch
    CERN, Geneva, Switzerland
  • T.G. Lucas, M. Volpi
    The University of Melbourne, Melbourne, Victoria, Australia
  
  Funding: Partially funded by SNF FLARE grant 20FL20147463
We present the design, construction and high-power test of an X-band radio-frequency accelerating structure, built as a prototype for the CERN LInear Collider (CLIC) study. X-band structures have been attracting increasing attention in recent years with applications foreseen in the domains of compact free electron lasers, medical accelerators and as diagnostics for ultra-short (femtosecond) electron bunches (when used in deflecting mode). To date, the main motivation for developments in this field has been as accelerating structures for linear colliders such as CLIC. In the context of a CERN/PSI collaboration we have built a prototype structure based on an existing CERN design, but with some modification, and following, as closely as possible, the realization and vacuum brazing techniques employed in the production of the C-band structures for the Swiss Free Electron Laser, SwissFEL. We will present the basic design of the structure and describe the fabrication process. The results of high power conditioning of the structure at CERN on an X-box test stand, to assess conditioning times, accelerating field and measure breakdown rates, will also be presented. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK097  
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