Modeling of Beam Loss Induced Quenches in the LHC Main Dipole Magnets

Marco Breschi; Enrico Felcini; Francesca Breccia; P. P. Granieri; Eleonora Bergonzoni; Alessandro Bevilacqua; Pietro Galassi; Tiemo Winkler; Luca Bottura

doi:10.1109/TASC.2019.2906636

Modeling of Beam Loss Induced Quenches in the LHC Main Dipole Magnets

Marco Breschi^*, Enrico Felcini, Francesca Breccia, P. P. Granieri, Eleonora Bergonzoni, Alessandro Bevilacqua, Pietro Galassi, Tiemo Winkler, Luca Bottura

^*Corresponding author for this work

Energy Materials Systems

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Abstract

The full energy exploitation of the Large Hadron Collider (LHC), a planned increase of the beam energy beyond the present 6.5 TeV, will result in more demanding working conditions for the superconducting dipoles and quadrupoles operating in the machine. It is hence crucial to analyze, understand, and predict the quench levels of these magnets for the required values of current and generated magnetic fields. A one-dimensional multi-strand electro-thermal model has been developed to analyze the effect of beam-losses heat deposition. Critical elements of the model are the ability to capture heat and current distribution among strands, and heat transfer to the superfluid helium bath. The computational model has been benchmarked against experimental values of LHC quench limits measured at 6.5 TeV for the Main Bending dipole magnets.

Original language	English
Article number	8675319
Journal	IEEE transactions on applied superconductivity
Volume	29
Issue number	5
DOIs	https://doi.org/10.1109/TASC.2019.2906636
Publication status	Published - 27 Mar 2019

Keywords

accelerator magnets
Beam losses
magnet stability
quench
Rutherford cables
superconductors
n/a OA procedure

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10.1109/TASC.2019.2906636

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title = "Modeling of Beam Loss Induced Quenches in the LHC Main Dipole Magnets",

abstract = "The full energy exploitation of the Large Hadron Collider (LHC), a planned increase of the beam energy beyond the present 6.5 TeV, will result in more demanding working conditions for the superconducting dipoles and quadrupoles operating in the machine. It is hence crucial to analyze, understand, and predict the quench levels of these magnets for the required values of current and generated magnetic fields. A one-dimensional multi-strand electro-thermal model has been developed to analyze the effect of beam-losses heat deposition. Critical elements of the model are the ability to capture heat and current distribution among strands, and heat transfer to the superfluid helium bath. The computational model has been benchmarked against experimental values of LHC quench limits measured at 6.5 TeV for the Main Bending dipole magnets.",

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AU - Breschi, Marco

AU - Felcini, Enrico

AU - Breccia, Francesca

AU - Granieri, P. P.

AU - Bergonzoni, Eleonora

AU - Bevilacqua, Alessandro

AU - Galassi, Pietro

AU - Winkler, Tiemo

AU - Bottura, Luca

PY - 2019/3/27

Y1 - 2019/3/27

N2 - The full energy exploitation of the Large Hadron Collider (LHC), a planned increase of the beam energy beyond the present 6.5 TeV, will result in more demanding working conditions for the superconducting dipoles and quadrupoles operating in the machine. It is hence crucial to analyze, understand, and predict the quench levels of these magnets for the required values of current and generated magnetic fields. A one-dimensional multi-strand electro-thermal model has been developed to analyze the effect of beam-losses heat deposition. Critical elements of the model are the ability to capture heat and current distribution among strands, and heat transfer to the superfluid helium bath. The computational model has been benchmarked against experimental values of LHC quench limits measured at 6.5 TeV for the Main Bending dipole magnets.

AB - The full energy exploitation of the Large Hadron Collider (LHC), a planned increase of the beam energy beyond the present 6.5 TeV, will result in more demanding working conditions for the superconducting dipoles and quadrupoles operating in the machine. It is hence crucial to analyze, understand, and predict the quench levels of these magnets for the required values of current and generated magnetic fields. A one-dimensional multi-strand electro-thermal model has been developed to analyze the effect of beam-losses heat deposition. Critical elements of the model are the ability to capture heat and current distribution among strands, and heat transfer to the superfluid helium bath. The computational model has been benchmarked against experimental values of LHC quench limits measured at 6.5 TeV for the Main Bending dipole magnets.

KW - accelerator magnets

KW - Beam losses

KW - magnet stability

KW - quench

KW - Rutherford cables

KW - superconductors

KW - n/a OA procedure

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Modeling of Beam Loss Induced Quenches in the LHC Main Dipole Magnets

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Keywords

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