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Title: Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable

Abstract

A racetrack magnet, using Nb{sub 3}Sn superconducting cable reacted before winding, has been fabricated and tested at Fermilab. It consists of two flat racetrack coils, connected in a common-coil configuration, separated by a 5 mm thick fiberglass plate. Synthetic oil was used to prevent sintering of the strands during the heat treatment. The coils were wound and vacuum impregnated in the mechanical structure. The turn-to-turn insulation, consisting of Kapton{reg_sign}and pre-impregnated fiberglass tapes as wide as the cable, was wound together with the bare cable in order to form a continuous inter-turn spacer. The coils were instrumented with voltage taps, temperature sensors, spot heaters and quench heaters. The maximum current achieved was 12675 A which is 78% of the short sample limit at 5.1 K (minimum temperature in the coil during 75 A/s ramp). Measurement of the temperature margin revealed a low degradation in the innermost turns. Quench performances at different temperatures and ramp rate effects have been measured and are presented and discussed.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
805775
Report Number(s):
FERMILAB-Conf-02/302-E
TRN: US0300946
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Conference
Resource Relation:
Conference: ASC, Houston TX (US), 08/2002; Other Information: PBD: 11 Dec 2002
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; CABLES; CONFIGURATION; FABRICATION; FERMILAB; FIBERGLASS; HEAT TREATMENTS; HEATERS; MAGNETS; MECHANICAL STRUCTURES; SINTERING; SUPERCONDUCTING CABLES

Citation Formats

Ambrosio, Giorgio. Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable. United States: N. p., 2002. Web.
Ambrosio, Giorgio. Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable. United States.
Ambrosio, Giorgio. 2002. "Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable". United States. https://www.osti.gov/servlets/purl/805775.
@article{osti_805775,
title = {Fabrication and test of a racetrack magnet using pre-reacted Nb3Sn cable},
author = {Ambrosio, Giorgio},
abstractNote = {A racetrack magnet, using Nb{sub 3}Sn superconducting cable reacted before winding, has been fabricated and tested at Fermilab. It consists of two flat racetrack coils, connected in a common-coil configuration, separated by a 5 mm thick fiberglass plate. Synthetic oil was used to prevent sintering of the strands during the heat treatment. The coils were wound and vacuum impregnated in the mechanical structure. The turn-to-turn insulation, consisting of Kapton{reg_sign}and pre-impregnated fiberglass tapes as wide as the cable, was wound together with the bare cable in order to form a continuous inter-turn spacer. The coils were instrumented with voltage taps, temperature sensors, spot heaters and quench heaters. The maximum current achieved was 12675 A which is 78% of the short sample limit at 5.1 K (minimum temperature in the coil during 75 A/s ramp). Measurement of the temperature margin revealed a low degradation in the innermost turns. Quench performances at different temperatures and ramp rate effects have been measured and are presented and discussed.},
doi = {},
url = {https://www.osti.gov/biblio/805775}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {12}
}

Conference:
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