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Title: FPGA-based Klystron linearization implementations in scope of ILC

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [2];  [2];  [2];  [2];  [3];  [3];  [4];  [4];  [5]
  1. The Graduate Univ. of Advanced Studies, Hayama (Japan)
  2. The Graduate Univ. of Advanced Studies/High Energy Accelerator Research Organization, Tsukuba (Japan)
  3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  5. Lodz Univ. of Technology, Lodz (Poland)
+ Show Author Affiliations

We report the development and implementation of four FPGA-based predistortion-type klystron linearization algorithms. Klystron linearization is essential for the realization of ILC, since it is required to operate the klystrons 7% in power below their saturation. The work presented was performed in international collaborations at the Fermi National Accelerator Laboratory (FNAL), USA and the Deutsches Elektronen Synchrotron (DESY), Germany. With the newly developed algorithms, the generation of correction factors on the FPGA was improved compared to past algorithms, avoiding quantization and decreasing memory requirements. At FNAL, three algorithms were tested at the Advanced Superconducting Test Accelerator (ASTA), demonstrating a successful implementation for one algorithm and a proof of principle for two algorithms. Furthermore, the functionality of the algorithm implemented at DESY was demonstrated successfully in a simulation.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1235037
Report Number(s):
FERMILAB-PUB-15-317-AD
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 780, Issue C; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (2)

FPGA-based implementation of a cavity field controller for FLASH and X-FEL journal July 2007
Development and test of klystron linearization packages for FPGA-based low level RF control systems of ILC-like electron accelerators conference May 2014

Cited By (1)

Real-time cavity simulator-based low-level radio-frequency test bench and applications for accelerators journal March 2018

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Related Subjects

43 PARTICLE ACCELERATORS
accelerators
ILC
Klystron linearization
FPGA
Klystron-cavity simulator