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LEDA LLRF control system characterization

Conference ·
OSTI ID:345050
 [1];  [2];  [3]
  1. Los Alamos National Lab., NM (United States)
  2. Commissariat a l`Energie Atomique, Bruyeres-le-Chatel (France)
  3. ZTEC, Inc., Albuquerque, NM (United States)
+ Show Author Affiliations
The Low Energy Demonstration Accelerator (LEDA) for the Accelerator for the Production of Tritium (APT) project will be built at Los Alamos National Laboratory. The low-level RF (LLRF) control system portion of this accelerator must perform many functions, of which the primary one is controlling the RF fields in the accelerating cavities. Plans have been made to provide for on-line characterization of the LLRF control system and the complete RF system through use of stimulus and response buffers, and a digital signal processor built into the field control system electronics. The purpose of this circuitry is to characterize the behavior of the entire RF system (klystron, waveguides, high power splitters, accelerator cavity, etc.). This characterization feature can be used to measure the performance of the closed loop system with respect to the open loop system, to provide an automated way to set loop parameters, to determine the cavity Q-curve, and to detect any abnormal behavior in the RF chain. The types of measurements include frequency and time-domain responses to given perturbations, amplitude modulations, etc. This paper will discuss types of algorithms that can be implemented and present a description and block diagram of the electronics to be used.
Research Organization:
Los Alamos National Lab., NM (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
345050
Report Number(s):
LA-UR--98-3511; CONF-980827--; ON: DE99002318
Country of Publication:
United States
Language:
English

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Related Subjects

43 PARTICLE ACCELERATORS
ALGORITHMS
COMPUTERIZED CONTROL SYSTEMS
DEMONSTRATION PROGRAMS
DESIGN
ELECTROMAGNETIC FIELDS
LINEAR ACCELERATORS
RF SYSTEMS