Title :
Impedance of electron beam vacuum chambers for the NSLS-II storage ring
Author :
Blednykh, Alexei ; Krinsky, Samuel
Author_Institution :
BNL, New York
Abstract :
In this paper we discuss computation of the coupling impedance of the vacuum chambers for the NSLS-II storage ring using the electromagnetic simulator GdfidL [1]. The impedance of the vacuum chambers depends on the geometric dimensions of the cross-section and height of the slot in the chamber wall. Of particular concern is the complex geometry of the infrared extraction chambers to be installed in special large-gap dipole magnets. In this case, wakefields are generated due to tapered transitions and large vertical-aperture ports with mirrors near the electron beam.
Keywords :
beam handling techniques; electron accelerators; particle accelerator accessories; particle beam dynamics; storage rings; GdfidL electromagnetic simulator; NSLS-II storage ring; coupling impedance; electron beam vacuum chambers; infrared extraction chambers; large-gap dipole magnets; vertical-aperture ports; Boundary conditions; Coaxial components; Computational modeling; Electromagnetic coupling; Electron beams; Geometry; Impedance; Magnets; Mirrors; Storage rings;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440101
