Design of the 70 mm twin aperture superconducting quadrupole for the LHC dump insertion

The LHC dump insertion features a pair of superconducting quadrupoles located on either side of a 340 m long straight section. Two horizontally deflecting kickers, located in between the quadrupole pairs, and a septum in the centre of the insertion, vertically deflect the two counter-rotating beams...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1997-06, Vol.7 (2), p.562-565
Main Authors: Kirby, G.A., Ostojic, R., Taylor, T.M., Trinquart, G.
Format: Article
Language:English
Subjects:
Apertures
Coils
Colliding beam devices
Cooling
Cyclic accelerators and storage rings
Degradation
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Iron
Large Hadron Collider
Nuclear physics
Physics
Structural beams
Superconducting magnets
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Summary:The LHC dump insertion features a pair of superconducting quadrupoles located on either side of a 340 m long straight section. Two horizontally deflecting kickers, located in between the quadrupole pairs, and a septum in the centre of the insertion, vertically deflect the two counter-rotating beams past the quadrupoles on the downstream sides, and into the dump areas. Due to the layout, the optical /spl beta/ function in the quadrupoles is around 640 m, the largest around the LHC at injection. The quadrupoles must therefore have enlarged aperture and specially designed cryostats to allow for the safe passage of both the circulating and ejected beams. In this paper we present the design of the twin aperture dump quadrupole based on the 70 mm four layer coil proposed for the LHC low-/spl beta/ quadrupoles. In preparation for model construction, we report on improvements of the coil design and a study of the retaining structures.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.614566