From Hot to Cold: Advanced Materials and Processes for Nb3Sn Based Magnets

Andre Brem; Michal Duda; Colin Mullera; Henrique Garciaa; Christoph Huga; Michael Daly; Douglas Martins Araujo; Jaap Kosse; Simon Otten; Anna Kario; Herman H.J.Ten Kate; Attilio Milanese; Bernhard Auchmann

doi:10.1109/TASC.2023.3338588

From Hot to Cold: Advanced Materials and Processes for Nb₃Sn Based Magnets

Andre Brem^*, Michal Duda, Colin Mullera, Henrique Garciaa, Christoph Huga, Michael Daly, Douglas Martins Araujo, Jaap Kosse, Simon Otten, Anna Kario, Herman H.J.Ten Kate, Attilio Milanese, Bernhard Auchmann

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

17 Downloads (Pure)

Abstract

We worked out an approach for obtaining 'clean' magnets by introducing oxygen during the reaction heat treatment (RHT) of a single glass fiber insulated Nb3Sn Rutherford cable in a channel. A reduction of the RRR by 16% was measured while the glass fiber insulation and support structure was visually clean after the RHT. We developed a filled wax system, consisting of fully refined paraffin wax, carnauba wax and alumina particles, which is compatible with the common glass fiber insulation on Rutherford cables. The filled wax showed a flexural modulus of 19 GPa at -100 °C and a thermal shrinkage of -1.2% from RT to 77 K. We used a commercial glass ceramic coating on stainless steel as primary insulation in single cable in a channel applications or as secondary electrical insulation from the former. The coating survives the RHT and operation temperatures and keeps its electrical insulation properties.

Original language	English
Article number	7700105
Journal	IEEE transactions on applied superconductivity
Volume	34
Issue number	5
Early online date	4 Dec 2023
DOIs	https://doi.org/10.1109/TASC.2023.3338588
Publication status	Published - 1 Aug 2024

Keywords

2025 OA procedure
impregnation
insulation
magnet
NbSn
reaction heat treatment
Bronze route

Access to Document

10.1109/TASC.2023.3338588

From_Hot_to_Cold_Advanced_Materials_and_Processes_for_NbSn_Based_MagnetsFinal published version, 3.67 MBLicence: Taverne

Cite this

@article{56eca5accf444c88952f461641cae385,

title = "From Hot to Cold: Advanced Materials and Processes for Nb3Sn Based Magnets",

abstract = "We worked out an approach for obtaining 'clean' magnets by introducing oxygen during the reaction heat treatment (RHT) of a single glass fiber insulated Nb3Sn Rutherford cable in a channel. A reduction of the RRR by 16% was measured while the glass fiber insulation and support structure was visually clean after the RHT. We developed a filled wax system, consisting of fully refined paraffin wax, carnauba wax and alumina particles, which is compatible with the common glass fiber insulation on Rutherford cables. The filled wax showed a flexural modulus of 19 GPa at -100 °C and a thermal shrinkage of -1.2% from RT to 77 K. We used a commercial glass ceramic coating on stainless steel as primary insulation in single cable in a channel applications or as secondary electrical insulation from the former. The coating survives the RHT and operation temperatures and keeps its electrical insulation properties.",

keywords = "2025 OA procedure, impregnation, insulation, magnet, NbSn, reaction heat treatment, Bronze route",

author = "Andre Brem and Michal Duda and Colin Mullera and Henrique Garciaa and Christoph Huga and Michael Daly and {Martins Araujo}, Douglas and Jaap Kosse and Simon Otten and Anna Kario and Kate, {Herman H.J.Ten} and Attilio Milanese and Bernhard Auchmann",

note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

year = "2024",

month = aug,

day = "1",

doi = "10.1109/TASC.2023.3338588",

language = "English",

volume = "34",

journal = "IEEE transactions on applied superconductivity",

issn = "1051-8223",

publisher = "IEEE",

number = "5",

}

TY - JOUR

T1 - From Hot to Cold

T2 - Advanced Materials and Processes for Nb3Sn Based Magnets

AU - Brem, Andre

AU - Duda, Michal

AU - Mullera, Colin

AU - Garciaa, Henrique

AU - Huga, Christoph

AU - Daly, Michael

AU - Martins Araujo, Douglas

AU - Kosse, Jaap

AU - Otten, Simon

AU - Kario, Anna

AU - Kate, Herman H.J.Ten

AU - Milanese, Attilio

AU - Auchmann, Bernhard

PY - 2024/8/1

Y1 - 2024/8/1

N2 - We worked out an approach for obtaining 'clean' magnets by introducing oxygen during the reaction heat treatment (RHT) of a single glass fiber insulated Nb3Sn Rutherford cable in a channel. A reduction of the RRR by 16% was measured while the glass fiber insulation and support structure was visually clean after the RHT. We developed a filled wax system, consisting of fully refined paraffin wax, carnauba wax and alumina particles, which is compatible with the common glass fiber insulation on Rutherford cables. The filled wax showed a flexural modulus of 19 GPa at -100 °C and a thermal shrinkage of -1.2% from RT to 77 K. We used a commercial glass ceramic coating on stainless steel as primary insulation in single cable in a channel applications or as secondary electrical insulation from the former. The coating survives the RHT and operation temperatures and keeps its electrical insulation properties.

AB - We worked out an approach for obtaining 'clean' magnets by introducing oxygen during the reaction heat treatment (RHT) of a single glass fiber insulated Nb3Sn Rutherford cable in a channel. A reduction of the RRR by 16% was measured while the glass fiber insulation and support structure was visually clean after the RHT. We developed a filled wax system, consisting of fully refined paraffin wax, carnauba wax and alumina particles, which is compatible with the common glass fiber insulation on Rutherford cables. The filled wax showed a flexural modulus of 19 GPa at -100 °C and a thermal shrinkage of -1.2% from RT to 77 K. We used a commercial glass ceramic coating on stainless steel as primary insulation in single cable in a channel applications or as secondary electrical insulation from the former. The coating survives the RHT and operation temperatures and keeps its electrical insulation properties.

KW - 2025 OA procedure

KW - impregnation

KW - insulation

KW - magnet

KW - NbSn

KW - reaction heat treatment

KW - Bronze route

UR - http://www.scopus.com/inward/record.url?scp=85179809663&partnerID=8YFLogxK

U2 - 10.1109/TASC.2023.3338588

DO - 10.1109/TASC.2023.3338588

M3 - Article

AN - SCOPUS:85179809663

SN - 1051-8223

VL - 34

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

IS - 5

M1 - 7700105

ER -

From Hot to Cold: Advanced Materials and Processes for Nb₃Sn Based Magnets

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this