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Title: An Analysis of the Temperature and Field Dependence of the RF Surface Resistance of Nitrogen-Doped Niobium SRF Cavities with Respect to Existing Theoretical Models

Recent progress with the reduction of rf surface resistance (Rs) of niobium SRF cavities via the use of high temperature surface doping by nitrogen has opened a new regime for energy efficient accelerator applications. For particular doping conditions one observes dramatic decreases in Rs with increasing surface magnetic fields. The observed variations as a function of temperature may be analyzed in the context of recent theoretical treatments in hopes of gaining insight into the underlying beneficial mechanism of the nitrogen treatment. Systematic data sets of Q0 vs. Eacc vs. temperature acquired during the high Q0 R&D work of the past year will be compared with theoretical model predictions..
 [1] ;  [1] ;  [2]
  1. Jefferson Lab, Newport News, VA
  2. Brookhaven National Laboratory, Upton, NY
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-ACC-15-2050; DOE/OR/23177-3353
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: IPAC 2015, 3-8 May 2015. Richmond, Virginia, USA
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States