Quenching of multisection superconducting magnets and internal and external shunt resistors

Author

Konjukhov, A.A. ; Malginov, V.A. ; Matokhin, V.V. ; Karasik, V.R.

Author_Institution

Lebedev Phys. Inst., Acad. of Sci., Moscow, USSR

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1538

Lastpage

1540

Abstract

Self-protection of superconducting magnets by subdivision using internal and external shunt resistors was investigated. Temperature rise at various points of the winding was measured by means of thermocouples soldered to the conductor. The velocity of the normal-zone propagation along radial and axial directions was obtained. Initial current was varied from 0.3 to 0.9I_q=1000 A. The effectiveness of protection by subdivision with external shunts depended on the number and dimensions of sections. It increased with decreasing single section size. When placed in the magnet, shunts work as a heater and diminish the quenching time and maximum winding temperature

Keywords

protection; superconducting magnets; temperature measurement; thermocouples; 1000 A; axial; external shunt resistors; internal shunt resistors; multisection superconducting magnets; normal-zone propagation; protection; quenching; radial; subdivision; thermocouples; velocity; winding temperature; Conductors; Magnetic separation; Power cable insulation; Power cables; Protection; Resistors; Strips; Superconducting cables; Superconducting magnets; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92590

Filename

92590