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Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC)

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Standard

Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC). / Marinozzi, Vittorio; Ambrosio, Giorgio; Bellomo, Giovanni; Chlachidze, Guram; Felice, Helene; Marchevsky, Maxim; Salmi, Tiina; Sorbi, Massimo; Todesco, Ezio.

In: IEEE Transactions on Applied Superconductivity, Vol. 25, No. 3, 4002905, 01.06.2015.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Marinozzi, V, Ambrosio, G, Bellomo, G, Chlachidze, G, Felice, H, Marchevsky, M, Salmi, T, Sorbi, M & Todesco, E 2015, 'Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC)', IEEE Transactions on Applied Superconductivity, vol. 25, no. 3, 4002905. https://doi.org/10.1109/TASC.2014.2383435

APA

Marinozzi, V., Ambrosio, G., Bellomo, G., Chlachidze, G., Felice, H., Marchevsky, M., ... Todesco, E. (2015). Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC). IEEE Transactions on Applied Superconductivity, 25(3), [ 4002905]. https://doi.org/10.1109/TASC.2014.2383435

Vancouver

Marinozzi V, Ambrosio G, Bellomo G, Chlachidze G, Felice H, Marchevsky M et al. Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC). IEEE Transactions on Applied Superconductivity. 2015 Jun 1;25(3). 4002905. https://doi.org/10.1109/TASC.2014.2383435

Author

Marinozzi, Vittorio ; Ambrosio, Giorgio ; Bellomo, Giovanni ; Chlachidze, Guram ; Felice, Helene ; Marchevsky, Maxim ; Salmi, Tiina ; Sorbi, Massimo ; Todesco, Ezio. / Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC). In: IEEE Transactions on Applied Superconductivity. 2015 ; Vol. 25, No. 3.

Bibtex - Download

@article{4c3d38e23878470aa1fd588aba2f4d5d,
title = "Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC)",
abstract = "The HiLumi program is aiming to develop and build new Nb3Sn, high-field (12 T), and large-aperture (150 mm) superconducting quadrupoles, which will be inserted in the LHC interaction regions and will provide the final focusing of the beam, in the program of luminosity upgrade. The quench protection of these magnets is one of the most challenging aspects, mainly because of the large value of the magnet inductance (160 mH for the configuration with two 8-m-long magnets in series), of the large value of the stored magnetic energy density in the coils (0.12 J/mm3, a factor 2 larger than in the conventional NbTi quadrupoles) and of the use of Nb3Sn as a conductor, which has never been used for large accelerator magnets. Previous works have demonstrated that a 'standard' conservative analysis, assuming quench heaters only on the coils' outer layer, gives high hot-spot temperature, close to the design limit (350 K). In this paper, a new study of quench protection is presented. The benefic effects of large dI/dt during the discharge and other dynamic effects are discussed together with options for having a partial coverage of the inner layer by quench heaters. The analysis is validated by experimental data from RD Nb3Sn quadrupole magnets.",
keywords = "Niobium compounds, quench protection, superconducting accelerators",
author = "Vittorio Marinozzi and Giorgio Ambrosio and Giovanni Bellomo and Guram Chlachidze and Helene Felice and Maxim Marchevsky and Tiina Salmi and Massimo Sorbi and Ezio Todesco",
year = "2015",
month = "6",
day = "1",
doi = "10.1109/TASC.2014.2383435",
language = "English",
volume = "25",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Study of quench protection for the Nb3Sn low-β quadrupole for the LHC luminosity upgrade (HiLumi-LHC)

AU - Marinozzi, Vittorio

AU - Ambrosio, Giorgio

AU - Bellomo, Giovanni

AU - Chlachidze, Guram

AU - Felice, Helene

AU - Marchevsky, Maxim

AU - Salmi, Tiina

AU - Sorbi, Massimo

AU - Todesco, Ezio

PY - 2015/6/1

Y1 - 2015/6/1

N2 - The HiLumi program is aiming to develop and build new Nb3Sn, high-field (12 T), and large-aperture (150 mm) superconducting quadrupoles, which will be inserted in the LHC interaction regions and will provide the final focusing of the beam, in the program of luminosity upgrade. The quench protection of these magnets is one of the most challenging aspects, mainly because of the large value of the magnet inductance (160 mH for the configuration with two 8-m-long magnets in series), of the large value of the stored magnetic energy density in the coils (0.12 J/mm3, a factor 2 larger than in the conventional NbTi quadrupoles) and of the use of Nb3Sn as a conductor, which has never been used for large accelerator magnets. Previous works have demonstrated that a 'standard' conservative analysis, assuming quench heaters only on the coils' outer layer, gives high hot-spot temperature, close to the design limit (350 K). In this paper, a new study of quench protection is presented. The benefic effects of large dI/dt during the discharge and other dynamic effects are discussed together with options for having a partial coverage of the inner layer by quench heaters. The analysis is validated by experimental data from RD Nb3Sn quadrupole magnets.

AB - The HiLumi program is aiming to develop and build new Nb3Sn, high-field (12 T), and large-aperture (150 mm) superconducting quadrupoles, which will be inserted in the LHC interaction regions and will provide the final focusing of the beam, in the program of luminosity upgrade. The quench protection of these magnets is one of the most challenging aspects, mainly because of the large value of the magnet inductance (160 mH for the configuration with two 8-m-long magnets in series), of the large value of the stored magnetic energy density in the coils (0.12 J/mm3, a factor 2 larger than in the conventional NbTi quadrupoles) and of the use of Nb3Sn as a conductor, which has never been used for large accelerator magnets. Previous works have demonstrated that a 'standard' conservative analysis, assuming quench heaters only on the coils' outer layer, gives high hot-spot temperature, close to the design limit (350 K). In this paper, a new study of quench protection is presented. The benefic effects of large dI/dt during the discharge and other dynamic effects are discussed together with options for having a partial coverage of the inner layer by quench heaters. The analysis is validated by experimental data from RD Nb3Sn quadrupole magnets.

KW - Niobium compounds

KW - quench protection

KW - superconducting accelerators

U2 - 10.1109/TASC.2014.2383435

DO - 10.1109/TASC.2014.2383435

M3 - Article

VL - 25

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 3

M1 - 4002905

ER -