Unprecedented quality factors at accelerating gradients up to 45 MVm −1 in niobium superconducting resonators via low temperature nitrogen infusion
Abstract
Here, we report the finding of new surface treatments that permit to manipulate the niobium resonator nitrogen content in the first few nanometers in a controlled way, and the resonator fundamental Mattis-Bardeen surface resistance and residual resistance accordingly. In particular, we find surface infusion conditions that systematically a) increase the quality factor of these 1.3 GHz superconducting radio frequency (SRF) bulk niobium resonators, up to very high gradients; b) increase the achievable accelerating gradient of the cavity compared to its own baseline with state-of-the-art surface processing. Cavities subject to the new surface process have larger than two times the state of the art Q at 2K for accelerating fields > 35 MV/m. Moreover, very high accelerating gradients ~ 45 MV/m are repeatedly reached, which correspond to peak magnetic surface fields of 190 mT, among the highest measured for bulk niobium cavities. These findings open the opportunity to tailor the surface impurity content distribution to maximize performance in Q and gradients, and have therefore very important implications on future performance and cost of SRF based accelerators. They also help deepen the understanding of the physics of the RF niobium cavity surface.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1437715
- Alternate Identifier(s):
- OSTI ID: 1407126
- Report Number(s):
- arXiv:1701.06077; FERMILAB-PUB-17-458-TD
Journal ID: ISSN 0953-2048
- Grant/Contract Number:
- Early Career Award "Impurity D; GARD Program; AC02-07CH11359
- Resource Type:
- Published Article
- Journal Name:
- Superconductor Science and Technology
- Additional Journal Information:
- Journal Name: Superconductor Science and Technology Journal Volume: 30 Journal Issue: 9; Journal ID: ISSN 0953-2048
- Publisher:
- IOP Publishing
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; SRF; nitrogen doping; nitrogen infusion; high Q; high accelerating gradient; radio frequency surface resistance
Citation Formats
Grassellino, A., Romanenko, A., Trenikhina, Y., Checchin, M., Martinello, M., Melnychuk, O. S., Chandrasekaran, S., Sergatskov, D. A., Posen, S., Crawford, A. C., Aderhold, S., and Bice, D. Unprecedented quality factors at accelerating gradients up to 45 MVm −1 in niobium superconducting resonators via low temperature nitrogen infusion. United Kingdom: N. p., 2017.
Web. doi:10.1088/1361-6668/aa7afe.
Grassellino, A., Romanenko, A., Trenikhina, Y., Checchin, M., Martinello, M., Melnychuk, O. S., Chandrasekaran, S., Sergatskov, D. A., Posen, S., Crawford, A. C., Aderhold, S., & Bice, D. Unprecedented quality factors at accelerating gradients up to 45 MVm −1 in niobium superconducting resonators via low temperature nitrogen infusion. United Kingdom. https://doi.org/10.1088/1361-6668/aa7afe
Grassellino, A., Romanenko, A., Trenikhina, Y., Checchin, M., Martinello, M., Melnychuk, O. S., Chandrasekaran, S., Sergatskov, D. A., Posen, S., Crawford, A. C., Aderhold, S., and Bice, D. Mon .
"Unprecedented quality factors at accelerating gradients up to 45 MVm −1 in niobium superconducting resonators via low temperature nitrogen infusion". United Kingdom. https://doi.org/10.1088/1361-6668/aa7afe.
@article{osti_1437715,
title = {Unprecedented quality factors at accelerating gradients up to 45 MVm −1 in niobium superconducting resonators via low temperature nitrogen infusion},
author = {Grassellino, A. and Romanenko, A. and Trenikhina, Y. and Checchin, M. and Martinello, M. and Melnychuk, O. S. and Chandrasekaran, S. and Sergatskov, D. A. and Posen, S. and Crawford, A. C. and Aderhold, S. and Bice, D.},
abstractNote = {Here, we report the finding of new surface treatments that permit to manipulate the niobium resonator nitrogen content in the first few nanometers in a controlled way, and the resonator fundamental Mattis-Bardeen surface resistance and residual resistance accordingly. In particular, we find surface infusion conditions that systematically a) increase the quality factor of these 1.3 GHz superconducting radio frequency (SRF) bulk niobium resonators, up to very high gradients; b) increase the achievable accelerating gradient of the cavity compared to its own baseline with state-of-the-art surface processing. Cavities subject to the new surface process have larger than two times the state of the art Q at 2K for accelerating fields > 35 MV/m. Moreover, very high accelerating gradients ~ 45 MV/m are repeatedly reached, which correspond to peak magnetic surface fields of 190 mT, among the highest measured for bulk niobium cavities. These findings open the opportunity to tailor the surface impurity content distribution to maximize performance in Q and gradients, and have therefore very important implications on future performance and cost of SRF based accelerators. They also help deepen the understanding of the physics of the RF niobium cavity surface.},
doi = {10.1088/1361-6668/aa7afe},
journal = {Superconductor Science and Technology},
number = 9,
volume = 30,
place = {United Kingdom},
year = {Mon Aug 14 00:00:00 EDT 2017},
month = {Mon Aug 14 00:00:00 EDT 2017}
}
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https://doi.org/10.1088/1361-6668/aa7afe
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Works referencing / citing this record:
Vacancy-Hydrogen Interaction in Niobium during Low-Temperature Baking
journal, May 2020
- Wenskat, Marc; Čižek, Jakub; Liedke, Maciej Oskar
- Scientific Reports, Vol. 10, Issue 1
Niobium near-surface composition during nitrogen infusion relevant for superconducting radio-frequency cavities
text, January 2019
- Semione, G. D. L.; Dangwal Pandey, Arti; Tober, Steffen
- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Surface characterization of nitrogen-doped Nb (100) large-grain superconducting RF cavity material
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- Journal of Materials Science, Vol. 53, Issue 14
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- Radiation Detection Technology and Methods, Vol. 4, Issue 2
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- Nature Reviews Physics, Vol. 1, Issue 4
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- Sung, Z-H; Lee, P. J.; Gurevich, A.
- Superconductor Science and Technology, Vol. 31, Issue 4
Improvement of accelerating gradients in niobium quarter wave resonators
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- Rai, A.; Potukuchi, P. N.; Patra, P.
- Superconductor Science and Technology, Vol. 32, Issue 9
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- Deitrick, K. E.; Krafft, G. A.; Terzić, B.
- Physical Review Accelerators and Beams, Vol. 21, Issue 8
Vacancy-Hydrogen Interaction in Niobium during Low-Temperature Baking
text, January 2020
- Wenskat, Marc; Cizek, Jakub; Liedke, Maciej Oskar
- Deutsches Elektronen-Synchrotron, DESY, Hamburg