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Barnes, B.

Paper Title Page
THP117 Design and Evaluation of the Low-Level RF Electronics for the ILC Main LINAC 1075
 
  • U. Mavric, B. Barnes, J. Branlard, B. Chase, D.W. Klepec, V. Tupikov
    Fermilab, Batavia
 
 

Funding: Work supported by Fermi Research Alliance LLC. Under DE-AC02- 07CH11359 with the U.S. DOE
The proposed 30 km long ILC electron/positron collider is pushing the limits not only in basic physics research but also in engineering. For the two main Linacs, the pulsed rf power that is feeding the high number of SCRF cavities (~17,000) must to be regulated to app. 0.1% for amplitude and 0.2 deg for phase. The regulation of phase and amplitude is carried out by the analog/digital electronics also denoted as the low-level rf control system. Besides meeting the regulation specifications, the low-level rf must be reliable, robust and low cost. In the paper we present a possible hardware solution that addresses these issues. We also reveal the main design strategies that allowed us meeting the conflicting demands of the system. The system is evaluated on a cavity emulator implemented on the FPGA, which shows that system performance is within the specifications. Finally, we discuss the obtained results and give some suggestions for future work.