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Current lead and bus bar system for the 1.8 K test of the EURATOM LCT-coil

Abstract

For the test of EURATOM LCT coil at 1.8 K in the TOSKA facility, it is foreseen to use the 23 kA current leds developed for the POLO model coil. Special emphasis has been given to the connection of the current leads which will operate by using supercritical helium at 4.2 K to the coil terminals which are on the 1.8 K level. The heat input from the bus bar system (4.2 K) to the coil winding cooling circiut (1.8 K) for each terminal is only in the range of 10 to 15 W. The calculations show that the current leads together with the superconducting connection bars are safe: They can withstand a loss of mass flow for more than one minute withonly a very small increase of heat load into the coil if its cooling circuit stays in operation. (orig.). [Deutsch] Fuer den Test der EURATOM LCT-Spule bei 1.8 K in der TOSKA-Anlage ist der Einsatz der 23 kA stromzufuehrungen vorgesehen, die fuer den Test der POLO Modellspule entwickelt werden. Besonders Gewicht wird auf die Verbindung der Stromzufuehrungen zur Spule gelegt. Erstere werden durch ueberkritisches Helium bei 4.2 K gekuehlt, waehrend sich die Spulenwicklung auf einer Temperatur von 1.8  More>>
Publication Date:
Nov 01, 1991
Product Type:
Technical Report
Report Number:
KFK-4958
Reference Number:
SCA: 700430; 700480; PA: DEN-92:005319; SN: 92000728366
Resource Relation:
Other Information: PBD: Nov 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LARGE COIL PROGRAM; ELECTRIC CURRENTS; SUPERCONDUCTING DEVICES; EURATOM; TEMPERATURE RANGE 0000-0013 K; SUPERCRITICAL STATE; COOLING; EDDY CURRENTS; TEMPERATURE DISTRIBUTION; THERMAL CONDUCTIVITY; TEMPERATURE DEPENDENCE; VOLTAGE DROP; 700430; 700480; MAGNET COILS AND FIELDS; COMPONENT DEVELOPMENT; MATERIALS STUDIES
OSTI ID:
10140817
Research Organizations:
Kernforschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Technische Physik; Kernforschungszentrum Karlsruhe GmbH (Germany). Projekt Kernfusion
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE92511417; TRN: DE9205319
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
46 p.
Announcement Date:
Jul 05, 2005

Citation Formats

Friesinger, G, Heller, R, Schappals, L, and Zahn, G. Current lead and bus bar system for the 1.8 K test of the EURATOM LCT-coil. Germany: N. p., 1991. Web.
Friesinger, G, Heller, R, Schappals, L, & Zahn, G. Current lead and bus bar system for the 1.8 K test of the EURATOM LCT-coil. Germany.
Friesinger, G, Heller, R, Schappals, L, and Zahn, G. 1991. "Current lead and bus bar system for the 1.8 K test of the EURATOM LCT-coil." Germany.
@misc{etde_10140817,
title = {Current lead and bus bar system for the 1.8 K test of the EURATOM LCT-coil}
author = {Friesinger, G, Heller, R, Schappals, L, and Zahn, G}
abstractNote = {For the test of EURATOM LCT coil at 1.8 K in the TOSKA facility, it is foreseen to use the 23 kA current leds developed for the POLO model coil. Special emphasis has been given to the connection of the current leads which will operate by using supercritical helium at 4.2 K to the coil terminals which are on the 1.8 K level. The heat input from the bus bar system (4.2 K) to the coil winding cooling circiut (1.8 K) for each terminal is only in the range of 10 to 15 W. The calculations show that the current leads together with the superconducting connection bars are safe: They can withstand a loss of mass flow for more than one minute withonly a very small increase of heat load into the coil if its cooling circuit stays in operation. (orig.). [Deutsch] Fuer den Test der EURATOM LCT-Spule bei 1.8 K in der TOSKA-Anlage ist der Einsatz der 23 kA stromzufuehrungen vorgesehen, die fuer den Test der POLO Modellspule entwickelt werden. Besonders Gewicht wird auf die Verbindung der Stromzufuehrungen zur Spule gelegt. Erstere werden durch ueberkritisches Helium bei 4.2 K gekuehlt, waehrend sich die Spulenwicklung auf einer Temperatur von 1.8 K befindet. Der Waermestrom je Anschlusspol, der dadurch entsteht, bewegt sich in einem Bereich von 10 bis 15 W. Die Rechnungen zeigen, dass das System aus Stromzufuehrungen und supraleitendem Bus sicher ausgelegt ist: es widersteht einem Kuehlmittelverlust fuer mehr als eine Minute mit nur sehr geringer Erhoehung der Waermelast, wobei vorausgesetzt wurde, dass der Kuehlkreis der Spulenwicklung weiter gekuehlt wird. (orig.).}
place = {Germany}
year = {1991}
month = {Nov}
}