New expression for the current induced in a strip for the fringe field effect in a circular cross-section stripline
Abstract
The induced current (fraction of the wall current) flowing through a strip is a very crucial quantity in stripline-type pick-ups and kickers. Quantities like the output voltage, coupling impedance and kicker constant depend on the fraction of the wall current flowing through the strip. Due to the fringe field at the side edges of the strip the effective angular width of the strip and, hence, the fraction of the wall current intercepted by the strip is enhanced. This paper presents a calculation, by using CST EM studio, of the fraction of the wall current intercepted by the strip. A correction factor for the effect of the fringe field on the current induced in the strip is also presented. The results obtained through simulations and through a new expression are compared with earlier existing expressions.
- Publication:
-
Journal of Korean Physical Society
- Pub Date:
- May 2012
- DOI:
- 10.3938/jkps.60.1469
- Bibcode:
- 2012JKPS...60.1469K
- Keywords:
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- Stripline;
- Fringe field;
- Beam diagnostics