Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II
Abstract
The Linac Coherent Light Source II (LCLS-II) is a new state-of-the-art coherent X-ray source being constructed at SLAC National Accelerator Laboratory. It employs 280 superconducting radio frequency (SRF) cavities in order operate in continuous wave (CW) mode. To reduce the overall cryogenic cost of such a large accelerator, nitrogen-doping of the SRF cavities is being used. Nitrogen-doping has consistently been shown to increase the efficiency of SRF cavities operating in the 2.0 K regime and at medium fields (15–20 MV/m) in vertical cavity tests and horizontal cryomodule tests. While nitrogen-doping’s efficacy for improvement of cavity performance was demonstrated at three independent labs, Fermilab, Jefferson Lab, and Cornell University, transfer of the technology to industry for LCLS-II production was not without challenges. Here we present results from the beginning of LCLS-II cavity production. We discuss qualification of the cavity vendors and the first cavities from each vendor. Finally, we demonstrate that nitrogen-doping has been successfully transferred to SRF cavity vendors, resulting in consistent production of cavities with better cryogenic efficiency than has ever been achieved for a large-scale accelerator.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1457217
- Alternate Identifier(s):
- OSTI ID: 1417625; OSTI ID: 1430659
- Report Number(s):
- FERMILAB-PUB-17-660-TD
Journal ID: ISSN 0168-9002; S0168900217312767; PII: S0168900217312767
- Grant/Contract Number:
- AC02-76F00515; AC02-76SF00515; AC02-07CH11359
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Additional Journal Information:
- Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Volume: 883 Journal Issue: C; Journal ID: ISSN 0168-9002
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; SRF; Cavity; Accelerator; Niobium; Superconducting; Nitrogen-doping; 43 PARTICLE ACCELERATORS
Citation Formats
Gonnella, D., Aderhold, S., Burrill, A., Daly, E., Davis, K., Grassellino, A., Grimm, C., Khabiboulline, T., Marhauser, F., Melnychuk, O., Palczewski, A., Posen, S., Ross, M., Sergatskov, D., Sukhanov, A., Trenikhina, Y., and Wilson, K. M. Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II. Netherlands: N. p., 2018.
Web. doi:10.1016/j.nima.2017.11.047.
Gonnella, D., Aderhold, S., Burrill, A., Daly, E., Davis, K., Grassellino, A., Grimm, C., Khabiboulline, T., Marhauser, F., Melnychuk, O., Palczewski, A., Posen, S., Ross, M., Sergatskov, D., Sukhanov, A., Trenikhina, Y., & Wilson, K. M. Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II. Netherlands. https://doi.org/10.1016/j.nima.2017.11.047
Gonnella, D., Aderhold, S., Burrill, A., Daly, E., Davis, K., Grassellino, A., Grimm, C., Khabiboulline, T., Marhauser, F., Melnychuk, O., Palczewski, A., Posen, S., Ross, M., Sergatskov, D., Sukhanov, A., Trenikhina, Y., and Wilson, K. M. 2018.
"Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II". Netherlands. https://doi.org/10.1016/j.nima.2017.11.047.
@article{osti_1457217,
title = {Industrialization of the nitrogen-doping preparation for SRF cavities for LCLS-II},
author = {Gonnella, D. and Aderhold, S. and Burrill, A. and Daly, E. and Davis, K. and Grassellino, A. and Grimm, C. and Khabiboulline, T. and Marhauser, F. and Melnychuk, O. and Palczewski, A. and Posen, S. and Ross, M. and Sergatskov, D. and Sukhanov, A. and Trenikhina, Y. and Wilson, K. M.},
abstractNote = {The Linac Coherent Light Source II (LCLS-II) is a new state-of-the-art coherent X-ray source being constructed at SLAC National Accelerator Laboratory. It employs 280 superconducting radio frequency (SRF) cavities in order operate in continuous wave (CW) mode. To reduce the overall cryogenic cost of such a large accelerator, nitrogen-doping of the SRF cavities is being used. Nitrogen-doping has consistently been shown to increase the efficiency of SRF cavities operating in the 2.0 K regime and at medium fields (15–20 MV/m) in vertical cavity tests and horizontal cryomodule tests. While nitrogen-doping’s efficacy for improvement of cavity performance was demonstrated at three independent labs, Fermilab, Jefferson Lab, and Cornell University, transfer of the technology to industry for LCLS-II production was not without challenges. Here we present results from the beginning of LCLS-II cavity production. We discuss qualification of the cavity vendors and the first cavities from each vendor. Finally, we demonstrate that nitrogen-doping has been successfully transferred to SRF cavity vendors, resulting in consistent production of cavities with better cryogenic efficiency than has ever been achieved for a large-scale accelerator.},
doi = {10.1016/j.nima.2017.11.047},
url = {https://www.osti.gov/biblio/1457217},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
issn = {0168-9002},
number = C,
volume = 883,
place = {Netherlands},
year = {Thu Mar 01 00:00:00 EST 2018},
month = {Thu Mar 01 00:00:00 EST 2018}
}
Web of Science
Works referenced in this record:
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Works referencing / citing this record:
Two-pass two-way acceleration in a superconducting continuous wave linac to drive low jitter x-ray free electron lasers
journal, November 2019
- Bacci, A.; Rossetti Conti, M.; Bosotti, A.
- Physical Review Accelerators and Beams, Vol. 22, Issue 11
Surface characterization of nitrogen-doped high purity niobium coupons compared with superconducting rf cavity performance
journal, December 2019
- Dhakal, Pashupati; Ciovati, Gianluigi; Pudasaini, Uttar
- Physical Review Accelerators and Beams, Vol. 22, Issue 12