Author: Ting, A.
Paper Title Page
TUPA73 Design and Low Power Test of an Electron Bunching Enhancer Using Electrostatic Potential Depression 499
 
  • H. Xu, B.E. Carlsten, Q.R. Marksteiner
    LANL, Los Alamos, New Mexico, USA
  • B.L. Beaudoin, T.W. Koeth, A. Ting
    UMD, College Park, Maryland, USA
  
  Funding: This project was supported by the U.S. Department of Energy Office of Science through the Accelerator Stewardship Program.
We pre­sent our ex­per­i­men­tal de­sign and low power test re­sults of a struc­ture for the proof-of-prin­ci­ple demon­stra­tion of fast in­crease of the first har­monic cur­rent con­tent in a bunched elec­tron beam, using the tech­nique of elec­tro­sta­tic po­ten­tial de­pres­sion (EPD). A pri­mar­ily bunched elec­tron beam from an in­duc­tive out­put tube (IOT) at 710 MHz first en­ters an idler cav­ity, where the lon­gi­tu­di­nal slope of the beam en­ergy dis­tri­b­u­tion is re­versed. The beam then tran­sits through an EPD sec­tion im­ple­mented by a short beam pipe with a neg­a­tive high volt­age bias, in­side which the rate of in­crease of the first har­monic cur­rent is sig­nif­i­cantly en­hanced. An out­put cav­ity mea­sures the har­monic cur­rent de­vel­oped in­side the beam down­stream of the EPD sec­tion. Low power test re­sults of the idler and the out­put cav­i­ties agree with the the­o­ret­i­cal de­sign. 		 
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DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUPA73  
About • Received ※ 29 July 2022 — Accepted ※ 03 August 2022 — Issue date ※ 09 August 2022  
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