Author: Mills, M.
Paper Title Page
THPAB344 Magneto-Optical Trap Cathode for High Brightness Applications 4466
 
  • V.S. Yu, C.E. Hansel, G.E. Lawler, M. Mills, J.B. Rosenzweig
    UCLA, Los Angeles, California, USA
  • J.I. Mann
    PBPL, Los Angeles, USA
 
  Funding: This work was performed with support of the US Department of Energy under Contract No. DE-SC0020409 and the National Science Foundation under Grant No. PHY-1549132
Electron bunches extracted from magneto-optical traps (MOTs) via femtosecond photo-ionization and electrostatic acceleration can have significantly lower transverse emittance than emissions from traditional metal cathodes. Such MOT cathodes, however, have two drawbacks: the need for multiple trapping lasers and the limit to ~MV/m fields. Designs exist for MOTs which only require one trapping laser. Our RF simulations in High-Frequency Structure Simulator (HFSS) indicate that the cone MOT is the only one compatible with high gradient RF cavities. We present the combination of the two, an RF cavity with a cone-MOT as part of its geometry. It only requires one trapping laser and can use much higher fields. The geometry of the chamber is compatible with a wide range of MOT species, which allows the search for one which is compatible with copper cavities.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB344  
About • paper received ※ 19 May 2021       paper accepted ※ 29 July 2021       issue date ※ 12 August 2021  
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