Author: Thangaraj, J.C.T.
Paper Title Page
TUPAB098 Recent Progress Toward a Conduction-Cooled Superconducting Radiofrequency Electron Gun 1604
 
  • O. Mohsen, N. Adams, V. Korampally, A. McKeown, D. Mihalcea, P. Piot, I. Salehinia, N. Tom
    Northern Illinois University, DeKalb, USA
  • R. Dhuley, M.G. Geelhoed, D. Mihalcea, J.C.T. Thangaraj
    Fermilab, Batavia, Illinois, USA
  • P. Piot
    ANL, Lemont, Illinois, USA
  
  Funding: This work was supported by the US Department of Energy (DOE) under contract DE-SC0018367
High-rep­e­ti­tion-rate elec­tron sources have wide­spread ap­pli­ca­tions. This con­tri­bu­tion dis­cusses the progress to­ward a proof-of-prin­ci­ple demon­stra­tion for a con­duc­tion-cooled elec­tron source. The source con­sists of a sim­ple mod­i­fi­ca­tion of an el­lip­ti­cal cav­ity that en­hances the field elec­tric field at the pho­to­cath­ode sur­face. The source was cooled to cryo­genic tem­per­a­tures and pre­lim­i­nary mea­sure­ments for the qual­ity fac­tor and ac­cel­er­at­ing field were per­formed. Ad­di­tion­ally, we pre­sent fu­ture plans to im­prove the source along with sim­u­lated beam-dy­nam­ics per­for­mances. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB098  
About • paper received ※ 29 May 2021       paper accepted ※ 17 June 2021       issue date ※ 17 August 2021  
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THPAB156 Built-in Thermionic Electron Source for an SRF Linacs 4062
 
  • I.V. Gonin, S. Kazakov, R.D. Kephart, T.N. Khabiboulline, T.H. Nicol, N. Solyak, J.C.T. Thangaraj, V.P. Yakovlev
    Fermilab, Batavia, Illinois, USA
  
  The de­sign of a thermionic elec­tron source con­nected di­rectly to a su­per­con­duct­ing cav­ity, the key part of an SRF gun, is de­scribed. The re­sults of beam dy­nam­ics op­ti­miza­tion are pre­sented which allow lack of beam cur­rent in­ter­cept­ing in the su­per­con­duct­ing cav­ity. The elec­tron source con­cept is pre­sented in­clud­ing the cath­ode-grid as­sem­bly, ther­mal in­su­la­tion of the cath­ode from the cav­ity, and the gun res­onator de­sign. The cav­ity ther­mal load caused by the gun is an­a­lyzed in­clud­ing the sta­tic heat load, black body ra­di­a­tion, back­ward elec­tron heat­ing, etc.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB156  
About • paper received ※ 19 May 2021       paper accepted ※ 12 July 2021       issue date ※ 27 August 2021  
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