Title :
Results of adaptive feedforward on GTA
Author :
Ziomek, C.D. ; Denney, P.M. ; Regan, A.H. ; Lynch, M.T. ; Jachim, S.P. ; Eaton, L.E. ; Natter, E.F.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
This paper presents the results of the adaptive feedforward system in use on the Ground Test Accelerator (GTA). The adaptive feedforward system was shown to correct repetitive, high-frequency errors in the amplitude and phase of the RF field of the pulsed accelerator. The adaptive feedforward system was designed as an augmentation to the RF field feedback control system and was able to extend the closed-loop bandwidth and disturbance rejection by a factor of ten. Within a second implementation, the adaptive feedforward hardware was implemented in place of the feedback control system and was shown to negate both beam transients and phase droop in the klystron amplifier
Keywords :
beam handling equipment; beam handling techniques; ion accelerators; linear accelerators; GTA; Ground Test Accelerator; RF field feedback control system; adaptive feedforward; adaptive feedforward system; amplitude; beam transients; closed-loop bandwidth; disturbance rejection; klystron amplifier; phase; phase droop; pulsed accelerator; repetitive high-frequency error correction; Adaptive control; Adaptive systems; Bandwidth; Error correction; Feedback control; Feedforward systems; Life estimation; Programmable control; Radio frequency; System testing;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309332
