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Quench Protection Design and Simulation of a 7 Tesla Superconducting Magnet

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Quench Protection Design and Simulation of a 7 Tesla Superconducting Magnet

Auteurs : BEILEI GUO [République populaire de Chine] ; LIZHEN MA [République populaire de Chine] ; WEI WU [République populaire de Chine] ; QINGGAO YAO [République populaire de Chine] ; WENXUE HUANG [République populaire de Chine] ; XI WU [République populaire de Chine] ; YUAN HE [République populaire de Chine] ; SHAOFEI HAN [République populaire de Chine] ; PING YUAN [République populaire de Chine]

Source :

IEEE transactions on applied superconductivity [ 1051-8223 ] ; 2010.

RBID : Pascal:10-0295075

Descripteurs français

Pascal (Inist)
- Simulation système, Electroaimant supraconducteur, Précision élevée, Aimant, Solénoïde, Dispositif protection, Système passif, Endommagement, Trempe, Diode, Résistance électrique, Point chaud, Circuit protection, Méthode élément fini, Prévention dommage.

English descriptors

KwdEn :
- Damage prevention, Damaging, Diode, Finite element method, High precision, Hot spot, Magnet, Passive system, Protection circuit, Protective device, Quenching, Resistor, Solenoid, Superconducting magnet, System simulation.

Abstract

A 7 Tesla superconducting magnet with a clear warm bore of 156 mm in diameter has been developed for Lanzhou Penning Trap at the Institute of Modern Physics for high precision mass measurement. The magnet is comprised of 9 solenoid coils and operates in persistent mode with a total energy of 2.3 MJ. Due to the considerable amount of energy stored during persistent mode operation, the quench protection system is very important when designing and operating the magnet. A passive protection system based on a subdivided scheme is adopted to protect the superconducting magnet from damage caused by quenching. Cold diodes and resistors are put across the subdivision to reduce both the voltage and temperature hot spots. Computational simulations have been carried in Opera-quench. The designed quench protection circuit and the finite element method model for quench simulations are described; the time changing of temperature, voltage and current decay during the quench process is also analysed.

Affiliations:

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Le document en format XML

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<term>Hot spot</term>
<term>Magnet</term>
<term>Passive system</term>
<term>Protection circuit</term>
<term>Protective device</term>
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<term>Aimant</term>
<term>Solénoïde</term>
<term>Dispositif protection</term>
<term>Système passif</term>
<term>Endommagement</term>
<term>Trempe</term>
<term>Diode</term>
<term>Résistance électrique</term>
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<front><div type="abstract" xml:lang="en">A 7 Tesla superconducting magnet with a clear warm bore of 156 mm in diameter has been developed for Lanzhou Penning Trap at the Institute of Modern Physics for high precision mass measurement. The magnet is comprised of 9 solenoid coils and operates in persistent mode with a total energy of 2.3 MJ. Due to the considerable amount of energy stored during persistent mode operation, the quench protection system is very important when designing and operating the magnet. A passive protection system based on a subdivided scheme is adopted to protect the superconducting magnet from damage caused by quenching. Cold diodes and resistors are put across the subdivision to reduce both the voltage and temperature hot spots. Computational simulations have been carried in Opera-quench. The designed quench protection circuit and the finite element method model for quench simulations are described; the time changing of temperature, voltage and current decay during the quench process is also analysed.</div>
</front>
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Quench Protection Design and Simulation of a 7 Tesla Superconducting Magnet

Quench Protection Design and Simulation of a 7 Tesla Superconducting Magnet

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

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Pour mettre un lien sur cette page dans le réseau Wicri