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Title: Field-Enhanced Superconductivity in High-Frequency Niobium Accelerating Cavities

Abstract

The discovery of nitrogen-doping treatment revealed that the radio frequency surface resistance of niobium resonators may be significantly reduced when nitrogen impurities are dissolved as interstitials in the material. A peculiar behavior exhibited by N-doped cavities is the anti-Q slope, i.e., a reduction in the temperature-dependent component of the surface resistance as a function of the accelerating field. This unusual trend in the surface resistance behavior has been attributed to the presence of interstitial nitrogen in the niobium lattice after the doping treatment. This Letter presents a focused study on the field dependence of the temperature-dependent component of the surface resistance as a function of the cavity resonant frequency. The findings show that the anti-Q slope may appear even in clean niobium cavities if the resonant frequency is high enough, which suggests new routes toward understanding the anti-Q slope effect.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1483718
Alternate Identifier(s):
OSTI ID: 1492411
Report Number(s):
FERMILAB-PUB-19-015-TD
Journal ID: ISSN 0031-9007; 1706968
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 22; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; superconducting RF

Citation Formats

Martinello, M., Checchin, M., Romanenko, A., Grassellino, A., Aderhold, S., Chandrasekeran, S. K., Melnychuk, O., Posen, S., and Sergatskov, D. A. Field-Enhanced Superconductivity in High-Frequency Niobium Accelerating Cavities. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.224801.
Martinello, M., Checchin, M., Romanenko, A., Grassellino, A., Aderhold, S., Chandrasekeran, S. K., Melnychuk, O., Posen, S., & Sergatskov, D. A. Field-Enhanced Superconductivity in High-Frequency Niobium Accelerating Cavities. United States. doi:10.1103/PhysRevLett.121.224801.
Martinello, M., Checchin, M., Romanenko, A., Grassellino, A., Aderhold, S., Chandrasekeran, S. K., Melnychuk, O., Posen, S., and Sergatskov, D. A. Wed . "Field-Enhanced Superconductivity in High-Frequency Niobium Accelerating Cavities". United States. doi:10.1103/PhysRevLett.121.224801.
@article{osti_1483718,
title = {Field-Enhanced Superconductivity in High-Frequency Niobium Accelerating Cavities},
author = {Martinello, M. and Checchin, M. and Romanenko, A. and Grassellino, A. and Aderhold, S. and Chandrasekeran, S. K. and Melnychuk, O. and Posen, S. and Sergatskov, D. A.},
abstractNote = {The discovery of nitrogen-doping treatment revealed that the radio frequency surface resistance of niobium resonators may be significantly reduced when nitrogen impurities are dissolved as interstitials in the material. A peculiar behavior exhibited by N-doped cavities is the anti-Q slope, i.e., a reduction in the temperature-dependent component of the surface resistance as a function of the accelerating field. This unusual trend in the surface resistance behavior has been attributed to the presence of interstitial nitrogen in the niobium lattice after the doping treatment. This Letter presents a focused study on the field dependence of the temperature-dependent component of the surface resistance as a function of the cavity resonant frequency. The findings show that the anti-Q slope may appear even in clean niobium cavities if the resonant frequency is high enough, which suggests new routes toward understanding the anti-Q slope effect.},
doi = {10.1103/PhysRevLett.121.224801},
journal = {Physical Review Letters},
number = 22,
volume = 121,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevLett.121.224801

Citation Metrics:
Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: RT at 2.0 K and 5 MV/m as a function of the resonant frequency. The experimental values for the BCP, EP, N doped, and 120°C baked cavities were compared with the Mattis and Bardeen trend of RT as a function of the resonant frequency simulated with the Halbritter’smore » code. The simulation took into account that each surface treatment modified both the mean free path ℓ and reduced energy gap Δ/kTC.« less

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Works referenced in this record:

Error analysis for intrinsic quality factor measurement in superconducting radio frequency resonators
journal, December 2014

  • Melnychuk, O.; Grassellino, A.; Romanenko, A.
  • Review of Scientific Instruments, Vol. 85, Issue 12
  • DOI: 10.1063/1.4903868

A cavity experiment to search for hidden sector photons
journal, January 2008


The next ten years of X-ray science
journal, January 2017


Nitrogen and argon doping of niobium for superconducting radio frequency cavities: a pathway to highly efficient accelerating structures
journal, August 2013


Theory of the Anomalous Skin Effect in Normal and Superconducting Metals
journal, July 1958


Evidence of a Nonequilibrium Distribution of Quasiparticles in the Microwave Response of a Superconducting Aluminum Resonator
journal, January 2014


The surface impedance of superconductors and normal conductors: The Mattis-Bardeen theory
journal, October 1991

  • Turneaure, J. P.; Halbritter, J.; Schwettman, H. A.
  • Journal of Superconductivity, Vol. 4, Issue 5
  • DOI: 10.1007/BF00618215

The Spallation Neutron Source in Oak Ridge: A powerful tool for materials research
journal, November 2006


Quantum memory with millisecond coherence in circuit QED
journal, July 2016


Observation of High Coherence in Josephson Junction Qubits Measured in a Three-Dimensional Circuit QED Architecture
journal, December 2011


X-ray science: The big guns
journal, January 2014


Understanding Quality Factor Degradation in Superconducting Niobium Cavities at Low Microwave Field Amplitudes
journal, December 2017


Superconducting radio-frequency cavities made from medium and low-purity niobium ingots
journal, April 2016

  • Ciovati, Gianluigi; Dhakal, Pashupati; Myneni, Ganapati R.
  • Superconductor Science and Technology, Vol. 29, Issue 6
  • DOI: 10.1088/0953-2048/29/6/064002

Superconducting surface impedance under radiofrequency field
journal, July 2013


Effect of interstitial impurities on the field dependent microwave surface resistance of niobium
journal, August 2016

  • Martinello, M.; Grassellino, A.; Checchin, M.
  • Applied Physics Letters, Vol. 109, Issue 6
  • DOI: 10.1063/1.4960801

Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II
journal, March 2018

  • Gonnella, D.; Aderhold, S.; Burrill, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 883
  • DOI: 10.1016/j.nima.2017.11.047

Impact of nitrogen doping of niobium superconducting cavities on the sensitivity of surface resistance to trapped magnetic flux
journal, February 2016

  • Gonnella, Dan; Kaufman, John; Liepe, Matthias
  • Journal of Applied Physics, Vol. 119, Issue 7
  • DOI: 10.1063/1.4941944

Dependence of the residual surface resistance of superconducting radio frequency cavities on the cooling dynamics around T c
journal, May 2014

  • Romanenko, A.; Grassellino, A.; Melnychuk, O.
  • Journal of Applied Physics, Vol. 115, Issue 18
  • DOI: 10.1063/1.4875655

Superconducting TESLA cavities
journal, September 2000

  • Aune, B.; Bandelmann, R.; Bloess, D.
  • Physical Review Special Topics - Accelerators and Beams, Vol. 3, Issue 9
  • DOI: 10.1103/PhysRevSTAB.3.092001

Dependence of the microwave surface resistance of superconducting niobium on the magnitude of the rf field
journal, June 2013

  • Romanenko, A.; Grassellino, A.
  • Applied Physics Letters, Vol. 102, Issue 25
  • DOI: 10.1063/1.4812665

On surface resistance of superconductors
journal, June 1974


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