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Title: CAVITY CONTROL ALGORITHM

A digital low level radio frequency (RF) system typically incorporates either a heterodyne or direct sampling technique, followed by fast ADCs, then an FPGA, and finally a transmitting DAC. This universal platform opens up the possibilities for a variety of control algorithm implementations. The foremost concern for an RF control system is cavity field stability, and to meet the required quality of regulation, the chosen control system needs to have sufficient feedback gain. In this paper we will investigate the effectiveness of the regulation for three basic control system algorithms: I&Q (In-phase and Quadrature), Amplitude & Phase and digital SEL (Self Exciting Loop) along with the example of the Jefferson Lab 12 GeV cavity field control system.
Authors:
Publication Date:
OSTI Identifier:
1023628
Report Number(s):
JLAB-ACE-10-1298; DOE/OR/23177-1790
TRN: US1105040
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: LINAC10, 12-17 Sep 2010, Tsukuba, Japan
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ALGORITHMS; AMPLITUDES; CAVITY RESONATORS; CEBAF ACCELERATOR; CONTROL SYSTEMS; RF SYSTEMS