Instrumentation and Quench Protection for LARP Magnets

Instrumentation and Quench Protection for LARP Magnets

The US LHC Accelerator Research Program (LARP) is developing Nb 3 Sn prototype quadrupoles for the LHC interaction region upgrades. Several magnets have been tested within this program and understanding of their behavior and performance is a primary goal. The instrumentation is consequently a key co...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity Vol. 19; no. 3; pp. 2458 - 2462
Main Authors: Felice, H., Ambrosio, G., Chlachidze, G., Ferracin, P., Hafalia, R., Hannaford, R.C., Joseph, J.M., Lietzke, A.F., McInturff, A.D., Muratore, J.F., Prestemon, S., Sabbi, G.L., Schmalzle, J., Wanderer, P., Wang, X.R.
Format: Journal Article
Language:English
Published: New York IEEE 01-06-2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Circuit testing
Flexible printed circuits
Instrumentation
Instruments
Large Hadron Collider
LARP
Magnetic circuits
Magnets
Niobium
Protection
protection heaters
Prototypes
quench protection
superconducting magnets
Tin
{\rm Nb}_{3}{\rm Sn}
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Summary:The US LHC Accelerator Research Program (LARP) is developing Nb 3 Sn prototype quadrupoles for the LHC interaction region upgrades. Several magnets have been tested within this program and understanding of their behavior and performance is a primary goal. The instrumentation is consequently a key consideration, as is protection of the magnet during quenches. In all LARP magnets, the flexible circuits traces combine the instrumentation and the protection heaters. Their fabrication relies on printed circuit technology based on a laminate made of a 45-micron thick kapton sheet and a 25-micron thick foil of stainless steel. This paper reviews the protection heaters designs used in the TQ (Technology Quadrupole) and LR (Long Racetrack) series as well as the one used in LBNL HD2a high field dipole and presents the design of the traces for the Long Quadrupole (LQ), addressing challenges associated with the stored energy and the length of the magnet.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2019062