Title :
A fast amplitude and phase modulated RF source for AmPS
Author :
Kroes, F.B. ; Heine, E. ; Sluijk, T.G.B.W.
Author_Institution :
NIKHEF-K, Amsterdam, Netherlands
Abstract :
AmPS (Amsterdam pulse stretcher) is a 900-MeV electron stretcher and storage ring. To compensate for the synchrotron radiation losses and to control the injection and extraction process in the ring a continuous-wave (CW) RF source will be installed. The source will operate at 2856 MHz. This frequency has been chosen to ensure optimal beam capture of the injected beam from the linac, which has a 2856-MHz bunch structure. The RF cavity in the ring is a 40-cm-long slow wave structure. The filling time of the structure is 22 ns. During the three-turn injection and the directly consecutive extraction cycle, fast amplitude and phase modulation will be applied to obtain maximum injection and extraction efficiency. The required RF cavity input power is 30 kW for a circulating beam of 900 MeV and 200 mA. This power will be delivered by a commercially available 50-kW CW klystron. The source will either operate in linear or saturated mode.<>
Keywords :
electron accelerators; klystrons; linear accelerators; microwave generation; nuclear electronics; storage rings; 2856 MHz; 30 kW; 40 cm; 50 kW; AmPS; Amsterdam pulse stretcher; CW klystron; bunch structure; circulating beam; continuous-wave; electron stretcher; extraction; fast amplitude modulated source; filling time; linac; linear; optimal beam capture; phase modulated RF source; saturated mode; slow wave structure; storage ring; synchrotron radiation losses; three-turn injection; Electrons; Filling; Klystrons; Linear particle accelerator; Manufacturing; Particle beam injection; Phase modulation; Radio frequency; Storage rings; Synchrotron radiation;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164406
