Title :
Automated frequency tuning of SRF cavities at CEBAF
Author :
Chowdhary, M. ; Doolittle, L. ; Lahti, G. ; Simrock, S.N. ; Terrell, R.
Author_Institution :
Continuous Electron Beam Accel. Facility, Newport News, VA, USA
Abstract :
An automated cavity tuning procedure has been implemented in the CEBAF control system to tune the superconducting RF (SRF) cavities to their operating frequency of 1497 MHz. The capture range for the coarse tuning algorithm (burst mode) is more than 20 cavity bandwidths (5 kHz). The fine tuning algorithm (sweep mode) calibrates the phase offset in the detuning angle measurement. This paper describes the implementation of these algorithms and experience of their operation in the CEBAF control system
Keywords :
accelerator RF systems; accelerator cavities; accelerator control systems; electron accelerators; linear accelerators; superconducting cavity resonators; tuning; 1497 MHz; CEBAF; automated cavity tuning; burst mode; coarse tuning algorithm; control system; detuning angle measurement; phase offset; superconducting RF cavities; sweep mode; Bandwidth; Detectors; Microprocessors; Phase detection; Phase modulation; RF signals; Radio frequency; Resonance; Resonant frequency; Tuning;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505520
