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

Journal Article · Wed Feb 13 00:00:00 EST 2019 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2019.2895554· OSTI ID:1497706

Stoynev, Stoyan  ^[1]; Riemer, Kevin ^[1]; Zlobin, Alexander V.  ^[1]; Ambrosio, Giorgio  ^[1]; Ferracin, Paolo  ^[2]; Sabbi, GianLuca  ^[3]; Wanderer, Peter  ^[4]

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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)

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.

• Research Organization: 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 Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1497706
• Report Number(s): FERMILAB-PUB-18-662-TD; 1722681
• Journal Information: IEEE Transactions on Applied Superconductivity, Vol. 29, Issue 5; ISSN 1051-8223
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Nb $_3$ Sn accelerator magnets
superconducting coils
superconducting magnet training
quench performance