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Branlard, J.

Paper Title Page
THP028 Master Oscillator for Fermilab ILC Test Accelerator 631
 
  • J. Branlard, B. Chase, E. Cullerton
    Fermilab, Batavia, Illinois
  
  The low phase-noise master oscillator generates and distributes the various frequencies required for the LLRF system controlling ILCTA cavities. Two chassis have been developed for this design, generating the programmable frequencies and performing the distribution and amplification, respectively. It has been successfully used with the SNS and the DESY-SIMCON LLRF systems, driving two different superconducting cavities. The design approach and a full characterization of the master oscillator are presented in this paper. The measurement results include the frequency stability and the phase and amplitude noise spectrums of the multiple frequency outputs.  
THP060 Capture Cavity II at Fermilab 719
 
  • T. W. Koeth
    Rutgers University, The State University of New Jersey, Piscataway, New Jersey
  • J. Branlard, R. H. Carcagno, B. Chase, P. Czarapata, H. Edwards, R. P. Fliller, C. M. Ginsburg, B. M. Hanna, A. Hocker, A. Klebaner, M. J. Kucera, M. McGee, D. F. Orris, P. S. Prieto, J. Reid, J. K. Santucci, W. M. Soyars, C.-Y. Tan
    Fermilab, Batavia, Illinois
  
  Capture Cavity II is a 9-cell high gradient TESLA Superconducting cavity intended to upgrade the existing Fermilab Photoinjector electron beam energy from 15MeV to 40Mev. DESY provided the cavity which performed to 33MV/m. Beam tube component preparation and installation onto the cavity was completed at DESY. The cavity was shipped to FNAL under vacuum. Installation and testing of this cavity has provided an opportunity to demonstrate Fermilab’s SCRF High Power Testing infrastructure. We report on the high power RF tests performed with Capture Cavity II at both 4.5K and 1.8K, Cryogenic System Performance, Piezo Electric based fast tuner, and low level RF control.