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Ozelis, J.P.

Paper Title Page
THPD048 First High-gradient Tests of the Single-cell SC Cavity with the Feedback Waveguide 4390
 
  • P.V. Avrakhov, A. Kanareykin
    Euclid TechLabs, LLC, Solon, Ohio
  • M. Ge, I.G. Gonin, T.N. Khabiboulline, J.P. Ozelis, A.M. Rowe, N. Solyak, G. Wu, V.P. Yakovlev
    Fermilab, Batavia
  • J. Rathke
    AES, Medford, NY
  
 

Use of a su­per­con­duct­ing trav­el­ling wave ac­cel­er­at­ing (STWA) struc­ture with a small phase ad­vance per cell rather than a stand­ing wave struc­ture may pro­vide a sig­nif­i­cant in­crease in the ac­cel­er­at­ing gra­di­ent in the ILC linac. For the same sur­face elec­tric and mag­net­ic fields the STWA achieves an ac­cel­er­at­ing gra­di­ent 1.2 larg­er than TES­LA-like stand­ing wave cav­i­ties. In ad­di­tion, the STWA al­lows longer ac­cel­er­a­tion cav­i­ties, re­duc­ing the num­ber of gaps be­tween them. How­ev­er, the STWA struc­ture re­quires a SC feed­back waveg­uide to re­turn the few hun­dreds of MW of cir­cu­lat­ing RF power from the struc­ture out­put to the struc­ture input. A test sin­gle-cell cav­i­ty with feed­back was de­signed and man­u­fac­tured to demon­strate the pos­si­bil­i­ty of a prop­er pro­cess­ing to achieve a high ac­cel­er­at­ing gra­di­ent. The first re­sults of high-gra­di­ent tests of a pro­to­type 1.3 GHz sin­gle-cell cav­i­ty with feed­back waveg­uide will be pre­sent­ed.