Title :
e-/e+ Accelerating structure with cyclic variation of azimuth asymmetry
Author :
Krasnykh, Anatoly
Author_Institution :
Stanford Linear Accel. Center, Menlo Park
Abstract :
A classical electron/positron accelerating structure is a disk-loaded cylindrical waveguide. The accelerator structure here has azimuth symmetry. The proposed structure [1] contains a disk-loaded cylindrical waveguide where there is a periodical change of RF-field vs. azimuth. The modulation deforms the rf-field in such a manner that the accelerated particles undergo transverse focusing forces. The new class of accelerator structures covers the initial part of e+/e- linacs where a bunch is not rigid and additional transverse focusing fields are necessary. We discuss a bunch formation with a high transverse aspect ratio in the proposed structure and particularly in the photoinjector part of a linac.
Keywords :
accelerator RF systems; circular waveguides; linear accelerators; particle beam bunching; particle beam injection; RF-field; azimuth symmetry; bunch formation; classical electron-positron accelerating structure; disk-loaded cylindrical waveguide; electron-positron linacs; photoinjector; transverse focusing forces; Acceleration; Azimuth; Electron beams; Ion accelerators; Iris; Linear accelerators; Optical surface waves; Particle accelerators; Positrons; Proton accelerators;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440516
