Effect of interstitial impurities on the field dependent microwave surface resistance of niobium

Martinello, M.; Grassellino, A.; Checchin, M.; Romanenko, A.; Melnychuk, O.; Sergatskov, D. A.; Posen, S.; Zasadzinski, J. F.

doi:10.1063/1.4960801

Title: Effect of interstitial impurities on the field dependent microwave surface resistance of niobium

Journal Article · Mon Aug 08 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4960801· OSTI ID:1287756

; Grassellino, A.; Checchin, M.; Romanenko, A.;

;

; Posen, S.; Zasadzinski, J. F.

Previous work has demonstrated that the radio frequency surface resistance of niobium resonators is dramatically reduced when nitrogen impurities are dissolved as interstitial in the material. The origin of this effect is attributed to the lowering of the Mattis and Bardeen surface resistance contribution with increasing accelerating field. Meanwhile, an enhancement of the sensitivity to trapped magnetic field is typically observed for such cavities. In this paper we conduct the first systematic study on these different components contributing to the total surface resistance as a function of different levels of dissolved nitrogen, in comparison with standard surface treatments for niobium resonators. Adding these results together we are able to show for the first time which is the optimum surface treatment that maximizes the Q-factor of superconducting niobium resonators as a function of expected trapped magnetic field in the cavity walls. Lastly, these results also provide new insights on the physics behind the change in the field dependence of the Mattis and Bardeen surface resistance, and of the trapped magnetic vortex induced losses in superconducting niobium resonators.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1287756

Alternate ID(s):: OSTI ID: 1325211; OSTI ID: 1420656

Report Number(s):: arXiv:1606.04174; FERMILAB-PUB-16-362-TD

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Vol. 109 Journal Issue: 6; ISSN 0003-6951

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 35 works

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Cited By (6)

Niobium near-surface composition during nitrogen infusion relevant for superconducting radio-frequency cavities Semione, G. D. L.; Dangwal Pandey, Arti; Tober, Steffen Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-04335	text	January 2019
Frequency dependence of trapped flux sensitivity in SRF cavities Checchin, M.; Martinello, M.; Grassellino, A. Applied Physics Letters, Vol. 112, Issue 7 https://doi.org/10.1063/1.5016525	journal	February 2018
Electron mean free path dependence of the vortex surface impedance Checchin, M.; Martinello, M.; Grassellino, A. Superconductor Science and Technology, Vol. 30, Issue 3 https://doi.org/10.1088/1361-6668/aa5297	journal	January 2017
Unprecedented quality factors at accelerating gradients up to 45 MVm ⁻¹ in niobium superconducting resonators via low temperature nitrogen infusion Grassellino, A.; Romanenko, A.; Trenikhina, Y. Superconductor Science and Technology, Vol. 30, Issue 9 https://doi.org/10.1088/1361-6668/aa7afe	journal	August 2017
Revealing the role of nitrogen on hydride nucleation and stability in pure niobium using first-principles calculations Garg, P.; Balachandran, S.; Adlakha, I. Superconductor Science and Technology, Vol. 31, Issue 11 https://doi.org/10.1088/1361-6668/aae147	journal	October 2018
Simple model for the rf field amplitude dependence of the trapped flux sensitivity in superconducting rf cavities Calatroni, Sergio; Vaglio, Ruggero Physical Review Accelerators and Beams, Vol. 22, Issue 2 https://doi.org/10.1103/physrevaccelbeams.22.022001	journal	February 2019

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niobium
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