Author: Tiskumara, J.K.
Paper Title Page
WEPA31 Lower Temperature Annealing of Vapor Diffused Nb3Sn for Accelerator Cavities 695
 
  • J.K. Tiskumara, J.R. Delayen
    ODU, Norfolk, Virginia, USA
  • G.V. Eremeev
    Fermilab, Batavia, Illinois, USA
  • U. Pudasaini
    JLab, Newport News, Virginia, USA
  
  Nb3Sn is a next-gen­er­a­tion su­per­con­duct­ing ma­te­r­ial for the ac­cel­er­a­tor cav­i­ties with higher crit­i­cal tem­per­a­ture and su­per­heat­ing field, both twice com­pared to Nb. It promises su­pe­rior per­for­mance and higher op­er­at­ing tem­per­a­ture than Nb, re­sult­ing in sig­nif­i­cant cost re­duc­tion. So far, the Sn vapor dif­fu­sion method is the most pre­ferred and suc­cess­ful tech­nique to coat nio­bium cav­i­ties with Nb3Sn. Al­though sev­eral post-coat­ing tech­niques (chem­i­cal, elec­tro­chem­i­cal, me­chan­i­cal) have been ex­plored to im­prove the sur­face qual­ity of the coated sur­face, an ef­fec­tive process has yet to be found. Since there are only a few stud­ies on the post-coat­ing heat treat­ment at lower tem­per­a­tures, we an­nealed Nb3Sn-coated sam­ples at 800 C - 1000 C to study the ef­fect of heat treat­ments on sur­face prop­er­ties, pri­mar­ily aimed at re­mov­ing sur­face Sn residues. This paper dis­cusses the sys­tem­atic sur­face analy­sis of coated sam­ples after an­neal­ing at tem­per­a­tures be­tween 850 C and 950 C.  
DOI • reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-WEPA31  
About • Received ※ 02 August 2022 — Revised ※ 05 August 2022 — Accepted ※ 07 August 2022 — Issue date ※ 02 September 2022
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)