Title :
Analog components configuration and test results for PEFP LLRF system
Author :
Seol, K.T. ; Kwon, H.J. ; Kim, H.S. ; Kim, D.I. ; Cho, Y.S.
Author_Institution :
KAERI, Daejeon
Abstract :
The PEFP LLRF system for the 3MeV RFQ and 20MeV DTL has been developed. The stability of plusmn1% in the amplitude and plusmn1deg in the phase is required. Therefore, the drift of the analog components should be low to satisfy the requirement. Analog chassis as a prototype of LLRF system is configured and tested. RF components including an IQ modulator, an RF switch, a mixer, phase comparators, RF splitters, RF filters and trip circuit for high VSWR are installed in this chassis. This performs the shift of RF amplitude and phase from IQ signal, down-conversion to 10MHz IF signal, interlock for arc and high VSWR, and RF/clock distribution. The amplitude and phase stability of each component are measured to check the effect on the whole system performance. The detailed configuration and test results are presented.
Keywords :
accelerator RF systems; accelerator cavities; filters; ion sources; modulators; particle beam stability; proton accelerators; DTL; IQ modulator; PEFP LLRF system; RF filters; RF splitters; RF switch; RF-clock distribution; RFQ; VSWR; amplitude stability; analog components configuration; phase comparators; phase stability; proton accelerator; trip circuit; Circuit testing; Filters; Phase modulation; Prototypes; RF signals; Radio frequency; Stability; Switches; Switching circuits; System testing;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441186
