Author: Beverstock, D.R.
Paper Title Page
THPOGE19 Field Shielding of NbTiN Based Multilayer Structure for Accelerating Cavities 836
SUPCRI06   use link to see paper's listing under its alternate paper code  
 
  • I.H. Senevirathne, J.R. Delayen, A.V. Gurevich
    ODU, Norfolk, Virginia, USA
  • D.R. Beverstock
    The College of William and Mary, Williamsburg, Virginia, USA
  • D.R. Beverstock, J.R. Delayen, A-M. Valente-Feliciano
    JLab, Newport News, Virginia, USA
  
  Funding: NSF Grants PHY-1734075 and PHY-1416051, and DOE Awards DE-SC0010081 and DE-SC0019399
Over the past few decades, bulk nio­bium (Nb) has been the ma­te­r­ial of choice for su­per­con­duct­ing radio fre­quen-cy (SRF) cav­i­ties used in par­ti­cle ac­cel­er­a­tors to achieve higher ac­cel­er­at­ing gra­di­ents and lower RF losses. Multi-layer (SIS) struc­tures con­sist­ing of al­ter­nat­ing thin lay­ers of su­per­con­duc­tor(S) and in­su­la­tor(I) de­posited on a bulk Nb have been pro­posed to en­hance the peak sur­face mag­netic field and sus­tain a higher ac­cel­er­at­ing gra­di­ent. In this study, mul­ti­lay­ers based NbTiN and AlN de­posited on bulk Nb are used to test the pro­posed en­hance­ment using the DC mag­netic Hall probe tech­nique. The tech-nique de­tects a pen­e­trat­ing mag­netic field through the mul­ti­layer sam­ple as it is placed under an ex­ter­nal mag-netic field pro­duced by a mag­netic coil. This work re-ports the char­ac­ter­i­za­tion and mea­sure­ments of the mag-netic field of full flux pen­e­tra­tion through sin­gle lay­ers of NbTiN and bi­lay­ers of NbTiN/AlN on bulk Nb. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOGE19  
About • Received ※ 24 August 2022 — Revised ※ 01 September 2022 — Accepted ※ 08 September 2022 — Issue date ※ 15 September 2022
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