Beam coupling impedances of obstacles protruding into a beam pipe
Abstract
The beam coupling impedances of small obstacles protruding inside the vacuum chamber of an accelerator are calculated at frequencies for which the wavelength is large compared to a typical size of the obstacle. Formulas for a few important particular cases including both essentially threedimensional objects like a post or a mask and axisymmetric irises, are presented. These results allow simple practical estimates of the broadband impedance contributions from such discontinuities.
 Publication:

Physical Review E
 Pub Date:
 March 1997
 DOI:
 10.1103/PhysRevE.55.3529
 arXiv:
 arXiv:accphys/9609006
 Bibcode:
 1997PhRvE..55.3529K
 Keywords:

 Physics  Accelerator Physics
 EPrint:
 4 pages, LaTeX (REVTeX), 2 figures (eps)