Title :
New injection kicker modulators for HLS ring
Author :
Shang, L. ; Wang, X.Q. ; Wang, L. ; Fan, K.J. ; Zhao, F. ; Feng, G.Y.
Author_Institution :
NSRL, Hefei, China
Abstract :
This paper describes the new injection kicker modulators for HLS ring. In the new injection system, each kicker drives two kicker magnets in a parallel mode. The modulators can deliver a half-sine wave current with a bottom width of 3.5 μs, a peak current of 10 kA at the max repetition rate of 2 Hz. The 27 kV capacitor-charging circuit is based on constant-current, series-resonant, switching techniques. Simulated and measured waveforms of charging circuit are given. Basic formulae of designing a switching-mode series-resonant charging circuit are provided. Local control of the modulators is based on PLCs. Ladder Relay Logic program and performance of PLC controlling is described too
Keywords :
electron accelerators; modulators; nuclear electronics; particle beam injection; storage rings; synchrotron radiation; 10 kA; 2 Hz; 27 kV; 3.5 mus; HLS storage ring; PLC control; injection kicker modulator; ladder relay logic; switching-mode constant-current series-resonant capacitor charging circuit; Coaxial components; Damping; High level synthesis; Inductance; Magnets; RLC circuits; Resonance; Switching circuits; Thyratrons; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988344
