Superconducting Rf Gun Cavities for Large Bunch Charges
Albuquerque, NM(2007)
Abstract
The first electron beam of an RF gun with a 3.5 cell superconducting cavity is expected in July 2007 in FZD. This cavity has been designed for small bunch charges. In this paper we present the design of a similar cavity and of 1.5 cell gun cavities for large bunch charges. For a charge of 2.5 nC, which is the design value of the BESSY-FEL, and a bunch length of 21 ps a projected transverse emittance less then 1 pi mu has been obtained (without thermal emittance).
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Key words
accelerator RF systems,accelerator cavities,electron accelerators,electron beams,electron guns,linear accelerators,particle beam bunching,particle beam focusing,superconducting cavity resonators,BESSY-FEL,FZD,RF focusing,bunch charges,electron beam,linac,superconducting RF gun cavities,transverse emittance
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