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Title: Analysis of Nb$$_3$$Sn Accelerator Magnet Training

Abstract

Nb3Sn accelerator magnet technology has made significant progress during the past decades. For the first time, it is planned to be used in a real accelerator. A relatively small number of Nb3Sn quadrupoles and dipoles will be installed in the LHC to increase machine luminosity. Although it will prove the possibility of using Nb3Sn magnets in real machines, many questions of scaling this technology up remain. One of them is related to slow training of Nb3Sn magnets compared to the traditional Nb-Ti accelerator magnets. Since the goal is to operate thousands of Nb3Sn magnets in a future post-LHC accelerator, the slow training will affect both the practical design margin and the nominal operation field. Consequently, the cost of the project to reach the design field level is also increased. Furthermore, to improve our understanding of slow magnet training the existing Fermilab data from Nb3Sn magnet tests were re-analyzed. A summary of coil training features and correlations with fabrication parameters observed is presented in this paper.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1497706
Report Number(s):
FERMILAB-PUB-18-662-TD
Journal ID: ISSN 1051-8223; 1722681
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Nb $_3$ Sn accelerator magnets; superconducting coils; superconducting magnet training; quench performance

Citation Formats

Stoynev, Stoyan, Riemer, Kevin, Zlobin, Alexander V., Ambrosio, Giorgio, Ferracin, Paolo, Sabbi, GianLuca, and Wanderer, Peter. Analysis of Nb$_3$Sn Accelerator Magnet Training. United States: N. p., 2019. Web. doi:10.1109/TASC.2019.2895554.
Stoynev, Stoyan, Riemer, Kevin, Zlobin, Alexander V., Ambrosio, Giorgio, Ferracin, Paolo, Sabbi, GianLuca, & Wanderer, Peter. Analysis of Nb$_3$Sn Accelerator Magnet Training. United States. https://doi.org/10.1109/TASC.2019.2895554
Stoynev, Stoyan, Riemer, Kevin, Zlobin, Alexander V., Ambrosio, Giorgio, Ferracin, Paolo, Sabbi, GianLuca, and Wanderer, Peter. 2019. "Analysis of Nb$_3$Sn Accelerator Magnet Training". United States. https://doi.org/10.1109/TASC.2019.2895554. https://www.osti.gov/servlets/purl/1497706.
@article{osti_1497706,
title = {Analysis of Nb$_3$Sn Accelerator Magnet Training},
author = {Stoynev, Stoyan and Riemer, Kevin and Zlobin, Alexander V. and Ambrosio, Giorgio and Ferracin, Paolo and Sabbi, GianLuca and Wanderer, Peter},
abstractNote = {Nb3Sn accelerator magnet technology has made significant progress during the past decades. For the first time, it is planned to be used in a real accelerator. A relatively small number of Nb3Sn quadrupoles and dipoles will be installed in the LHC to increase machine luminosity. Although it will prove the possibility of using Nb3Sn magnets in real machines, many questions of scaling this technology up remain. One of them is related to slow training of Nb3Sn magnets compared to the traditional Nb-Ti accelerator magnets. Since the goal is to operate thousands of Nb3Sn magnets in a future post-LHC accelerator, the slow training will affect both the practical design margin and the nominal operation field. Consequently, the cost of the project to reach the design field level is also increased. Furthermore, to improve our understanding of slow magnet training the existing Fermilab data from Nb3Sn magnet tests were re-analyzed. A summary of coil training features and correlations with fabrication parameters observed is presented in this paper.},
doi = {10.1109/TASC.2019.2895554},
url = {https://www.osti.gov/biblio/1497706}, journal = {IEEE Transactions on Applied Superconductivity},
issn = {1051-8223},
number = 5,
volume = 29,
place = {United States},
year = {Wed Feb 13 00:00:00 EST 2019},
month = {Wed Feb 13 00:00:00 EST 2019}
}

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