Title :
Digital RF control for spallation neutron source accumulator ring
Author :
Ma, Hengjie ; Kasemir, K. ; Champion, M. ; Crofford, M. ; Hardek, T. ; Piller, M. ; Zhang, Y.
Author_Institution :
ORNL, Oak Ridge
Abstract :
The proposed upgrade plan for the rf control of the spallation neutron source (SNS) accumulator ring requires that the new digital field control module (FCM) have the capability of adaptive feed forward (AFF) compensation for the heavy beam loading in the cavities. The feed forward compensation capability should support both the conventional software driven AFF algorithm and a new beam current driven AFF algorithm. A user-friendly Epics GUI for all the FCM functionalities is also a part of the requirement. The first prototype for test has been built. It is a narrowband system based on the conventional I/Q sampling scheme. Both the hardware and software are currently under test in the lab, and the field test in a near future has been planned.
Keywords :
accelerator RF systems; accelerator control systems; control engineering computing; digital control; graphical user interfaces; human computer interaction; linear accelerators; neutron sources; particle beam injection; physics computing; I/Q sampling scheme; SNS Linac FCM; Spallation Neutron Source accumulator ring; adaptive feed forward compensation; beam current; beam injection; beam loading compensations; digital field control module; digital rf control system; software driven AFF algorithm; user-friendly Epics GUI; Adaptive control; Digital control; Feeds; Graphical user interfaces; Neutrons; Programmable control; Radio frequency; Software algorithms; Software prototyping; Software testing;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440295
