DocumentCode :
1980570
Title :
On coupling impedances of pumping holes
Author :
Kurennoy, Sergey S.
Author_Institution :
Superconducting Super Collider Lab., Dallas, TX, USA
fYear :
1993
fDate :
17-20 May 1993
Firstpage :
3417
Abstract :
Coupling impedances of a single small hole in vacuum-chamber walls have been calculated at low frequencies. To generalize these results for higher frequencies and/or larger holes one needs to solve coupled integral equations for the effective currents. These equations are solved for two specific hole shapes. The effects of many holes at high frequencies where the impedances are not additive are studied using a perturbation-theory method. The periodic versus random distributions of the pumping holes in the Superconducting Super Collider liner are compared
Keywords :
beam handling techniques; proton accelerators; storage rings; synchrotrons; SSC liner; Superconducting Super Collider liner; coupled integral equations; coupling impedances; effective currents; hole shapes; perturbation-theory method; pumping holes; vacuum-chamber wall hole; Analytical models; Colliding beam accelerators; Cutoff frequency; Frequency estimation; Impedance measurement; Integral equations; Laboratories; Optical coupling; Shape; Surface impedance;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
Type :
conf
DOI :
10.1109/PAC.1993.309669
Filename :
309669
Link To Document :
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