Author: Webb, S.D.
Paper Title Page
TUPOPA27 Conceptual Analysis of a Compact High Efficiency Klystron 466
 
  • J.P. Edelen, S.D. Webb
    RadiaSoft LLC, Boulder, Colorado, USA
  • K.E. Nichols
    LANL, Los Alamos, New Mexico, USA
  
  Tra­di­tional kly­stron ef­fi­cien­cies are lim­ited by the out­put elec­tron beam har­monic cur­rent and en­ergy spread. In­creas­ing the amount of har­monic cur­rent pro­duced in the kly­stron re­quires in­creas­ing the ve­loc­ity bunch­ing in the input cav­ity. Ad­di­tional cav­i­ties may be used to im­prove the bunch­ing, how­ever they do so at ad­di­tional cost and space re­quire­ments for the kly­stron. More­over, at higher cur­rents space charge coun­ter­acts this ve­loc­ity bunch­ing re­duc­ing the amount of har­monic cur­rent that can be pro­duced. Our con­cept re­solves these chal­lenges by em­ploy­ing a new type of high-ef­fi­ciency, multi-beam kly­stron. Our de­sign con­sists of a sin­gle two-fre­quency input cav­ity, a wig­gler, and an out­put cav­ity. The two-fre­quency input cav­ity ap­prox­i­mates a lin­ear func­tion in time thereby in­creas­ing the har­monic con­tent of the beam, while the wig­gler pro­vides strong lon­gi­tu­di­nal fo­cus­ing to mit­i­gate the ef­fects of space charge. In this paper we pro­vide the the­o­ret­i­cal foun­da­tion for our de­sign and pre­sent ini­tial nu­mer­i­cal cal­cu­la­tions show­ing im­proved bunch­ing from the har­monic mode and the wig­gler.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-TUPOPA27  
About • Received ※ 14 August 2022 — Revised ※ 24 August 2022 — Accepted ※ 30 August 2022 — Issue date ※ 31 August 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)