Title :
Spear 2 RF system loads
Author :
Sebek, J. ; Hill, A. ; Judkins, J. ; Krasnykh, A. ; Park, S. ; Schwarz, H.
Author_Institution :
Stanford Linear Accelerator Center, CA, USA
Abstract :
The design and performance of higher order mode (HOM) dampers for the SPEAR 2 RF system is presented. The SPEAR beam had experienced occasional periods of instability due to transverse oscillations which were driven by HOMs in the RF cavities. A substantial fraction of this RF energy was coupled out of the cavity into the waveguide connecting the cavity to the klystron. This waveguide was modified by adding a stub of smaller cross section, terminated by a ferrite tile load, to the system. Design considerations of the load, and its effect on HOMs and beam stability will be discussed
Keywords :
X-ray production; accelerator RF systems; accelerator cavities; electron accelerators; electron beams; ferrites; klystrons; particle beam stability; storage rings; HOM; RF cavities; RF energy; Spear 2 radiofrequency system loads; beam instability; electron storage ring; ferrite tile load; higher order mode dampers; klystron; synchrotron radiation; transverse oscillations; Couplers; Damping; Ferrites; Joining processes; Klystrons; Linear accelerators; Radio frequency; Shock absorbers; Temperature; Tiles;
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.2001.986532
