Title :
Study on beam steering in intermediate-β superconducting quarter wave resonators
Author :
Facco, A. ; Zviagintsev, V.
Author_Institution :
INFN Legnaro, Padova, Italy
Abstract :
Superconducting quarter wave resonators, due their compactness and their convenient shape for tuning and coupling, are very attractive for intermediate-β beam acceleration up to about 100 MeV/u. A drawback of this kind of cavities is the beam steering caused by transverse magnetic and electric field components; this can create emittance growth and beam spill, especially in high intensity proton linacs. We did analytical and numerical studies on beam steering in quarter wave resonators and, in particular, in different 352 MHz quarter wave geometries for beta=0.15-0.45 beams. The results suggest that, in this case, the solution of alternative cavity orientation could nearly cancel the steering
Keywords :
accelerator cavities; linear accelerators; particle beam stability; proton accelerators; superconducting cavity resonators; 352 MHz; beam spill; beam steering; emittance growth; high intensity proton linacs; intermediate-beta superconducting quarter wave resonators; Acceleration; Beam steering; Geometry; Linear accelerators; Magnetic analysis; Optical coupling; Particle beams; Protons; Shape; Superconducting magnets;
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.2001.986590
