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Title: Progress on HL-LHC Nb 3 Sn Magnets

Abstract

The high-luminosity Large Hadron Collider (HL-LHC) project aims at allowing to increase the collisions in the LHC by a factor of ten in the decade 2025-2035. One essential element is the superconducting magnet around the interaction region points, where the large aperture magnets will be installed to allow to further reduce the beam size in the interaction point. The core of this upgrade is the Nb 3 Sn triplet, made up of 150-mm aperture quadrupoles in the range of 7-8 m. The project is being shared between the European Organization for Nuclear Research and the US Accelerator Upgrade Program, based on the same design, and on the two strand technologies. The project is ending the short model phase, and entering the prototype construction. We will report on the main results of the short model program, including the quench performance and field quality. A second important element is the 11 T dipole that replaces a standard dipole making space for additional collimators. The magnet is also ending the model development and entering the prototype phase. A critical point in the design of this magnet is the large current density, allowing increase of the field from 8 to 11 T with themore » same coil cross section as in the LHC dipoles. This is also the first two-in-one Nb 3 Sn magnet developed so far. We will report the main results on the test and the critical aspects.« less

Authors:
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Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
HL-LHC Collaboration
OSTI Identifier:
1561891
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 28; Journal Issue: 4; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Todesco, Ezio, Annarella, M., Ambrosio, Giorgio, Apollinari, Giorgio, Ballarino, Amalia, Bajas, H., Bajko, Marta, Bordini, Bernardo, Bossert, R., Bottura, Luca, Cavanna, E., Cheng, D., Chlachidze, G., De Rijk, Gijs, DiMarco, J., Ferracin, Paolo, Fleiter, Jerome, Guinchard, M., Hafalia, A., Holik, E., Izquierdo Bermudez, S., Lackner, F., Marchevsky, M., Loeffler, C., Nobrega, A., Perez, Juan Carlos, Prestemon, Soren, Ravaioli, E., Rossi, Lucio, Sabbi, GianLuca, Salmi, T., Savary, Frederic, Schmalzle, J., Stoynev, S., Strauss, T., Tartaglia, M., Vallone, Giorgio, Velev, Gueorgui, Wanderer, Peter, Wang, X., Willering, Gerard, and Yu, M. Progress on HL-LHC Nb 3 Sn Magnets. United States: N. p., 2018. Web. https://doi.org/10.1109/tasc.2018.2830703.
Todesco, Ezio, Annarella, M., Ambrosio, Giorgio, Apollinari, Giorgio, Ballarino, Amalia, Bajas, H., Bajko, Marta, Bordini, Bernardo, Bossert, R., Bottura, Luca, Cavanna, E., Cheng, D., Chlachidze, G., De Rijk, Gijs, DiMarco, J., Ferracin, Paolo, Fleiter, Jerome, Guinchard, M., Hafalia, A., Holik, E., Izquierdo Bermudez, S., Lackner, F., Marchevsky, M., Loeffler, C., Nobrega, A., Perez, Juan Carlos, Prestemon, Soren, Ravaioli, E., Rossi, Lucio, Sabbi, GianLuca, Salmi, T., Savary, Frederic, Schmalzle, J., Stoynev, S., Strauss, T., Tartaglia, M., Vallone, Giorgio, Velev, Gueorgui, Wanderer, Peter, Wang, X., Willering, Gerard, & Yu, M. Progress on HL-LHC Nb 3 Sn Magnets. United States. https://doi.org/10.1109/tasc.2018.2830703
Todesco, Ezio, Annarella, M., Ambrosio, Giorgio, Apollinari, Giorgio, Ballarino, Amalia, Bajas, H., Bajko, Marta, Bordini, Bernardo, Bossert, R., Bottura, Luca, Cavanna, E., Cheng, D., Chlachidze, G., De Rijk, Gijs, DiMarco, J., Ferracin, Paolo, Fleiter, Jerome, Guinchard, M., Hafalia, A., Holik, E., Izquierdo Bermudez, S., Lackner, F., Marchevsky, M., Loeffler, C., Nobrega, A., Perez, Juan Carlos, Prestemon, Soren, Ravaioli, E., Rossi, Lucio, Sabbi, GianLuca, Salmi, T., Savary, Frederic, Schmalzle, J., Stoynev, S., Strauss, T., Tartaglia, M., Vallone, Giorgio, Velev, Gueorgui, Wanderer, Peter, Wang, X., Willering, Gerard, and Yu, M. Fri . "Progress on HL-LHC Nb 3 Sn Magnets". United States. https://doi.org/10.1109/tasc.2018.2830703. https://www.osti.gov/servlets/purl/1561891.
@article{osti_1561891,
title = {Progress on HL-LHC Nb 3 Sn Magnets},
author = {Todesco, Ezio and Annarella, M. and Ambrosio, Giorgio and Apollinari, Giorgio and Ballarino, Amalia and Bajas, H. and Bajko, Marta and Bordini, Bernardo and Bossert, R. and Bottura, Luca and Cavanna, E. and Cheng, D. and Chlachidze, G. and De Rijk, Gijs and DiMarco, J. and Ferracin, Paolo and Fleiter, Jerome and Guinchard, M. and Hafalia, A. and Holik, E. and Izquierdo Bermudez, S. and Lackner, F. and Marchevsky, M. and Loeffler, C. and Nobrega, A. and Perez, Juan Carlos and Prestemon, Soren and Ravaioli, E. and Rossi, Lucio and Sabbi, GianLuca and Salmi, T. and Savary, Frederic and Schmalzle, J. and Stoynev, S. and Strauss, T. and Tartaglia, M. and Vallone, Giorgio and Velev, Gueorgui and Wanderer, Peter and Wang, X. and Willering, Gerard and Yu, M.},
abstractNote = {The high-luminosity Large Hadron Collider (HL-LHC) project aims at allowing to increase the collisions in the LHC by a factor of ten in the decade 2025-2035. One essential element is the superconducting magnet around the interaction region points, where the large aperture magnets will be installed to allow to further reduce the beam size in the interaction point. The core of this upgrade is the Nb 3 Sn triplet, made up of 150-mm aperture quadrupoles in the range of 7-8 m. The project is being shared between the European Organization for Nuclear Research and the US Accelerator Upgrade Program, based on the same design, and on the two strand technologies. The project is ending the short model phase, and entering the prototype construction. We will report on the main results of the short model program, including the quench performance and field quality. A second important element is the 11 T dipole that replaces a standard dipole making space for additional collimators. The magnet is also ending the model development and entering the prototype phase. A critical point in the design of this magnet is the large current density, allowing increase of the field from 8 to 11 T with the same coil cross section as in the LHC dipoles. This is also the first two-in-one Nb 3 Sn magnet developed so far. We will report the main results on the test and the critical aspects.},
doi = {10.1109/tasc.2018.2830703},
journal = {IEEE Transactions on Applied Superconductivity},
number = 4,
volume = 28,
place = {United States},
year = {2018},
month = {6}
}

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Cited by: 12 works
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Figures / Tables:

Fig. 1 Fig. 1: Coil width and strand current density for accelerator magnets. For D20 and HD2 data relative to max field reached are given. Dots for Nb-Ti, triangles for Nb3Sn and empty circles for FCC targets.

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Works referencing / citing this record:

Beneficial influence of Hf and Zr additions to Nb4at%Ta on the vortex pinning of Nb 3 Sn with and without an O source
journal, February 2019

  • Balachandran, Shreyas; Tarantini, Chiara; Lee, Peter J.
  • Superconductor Science and Technology, Vol. 32, Issue 4
  • DOI: 10.1088/1361-6668/aaff02

Ta, Ti and Hf effects on Nb 3 Sn high-field performance: temperature-dependent dopant occupancy and failure of Kramer extrapolation
journal, November 2019

  • Tarantini, Chiara; Balachandran, Shreyas; Heald, Steve M.
  • Superconductor Science and Technology, Vol. 32, Issue 12
  • DOI: 10.1088/1361-6668/ab4d9e