Novel Adjustable Permanent Magnet Quadrupoles for the CLIC Drive Beam Decelerator

The CLIC Drive Beam Decelerator (DBD) requires 41,848 quadrupoles to keep the beam focused along its length. Due to the stringent heat load requirements of the CLIC tunnel, a permanent magnet (PM) design is under investigation in a collaboration between CERN and STFC Daresbury Laboratory. The design...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2012-06, Vol.22 (3), p.4004204-4004204
Hauptverfasser:	Shepherd, B. J. A., Clarke, J. A., Marks, N., Collomb, N. A., Richmond, J. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Accelerator magnets Adjustable Applied sciences Beams (radiation) CERN Deceleration Electrical engineering. Electrical power engineering Electromagnets Exact sciences and technology Force Laboratories Magnetic circuits Magnetic flux magnetostatics Permanent magnets Prototypes Quadrupoles Solid modeling Specifications Superconductivity Various equipment and components
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Beschreibung
Zusammenfassung:	The CLIC Drive Beam Decelerator (DBD) requires 41,848 quadrupoles to keep the beam focused along its length. Due to the stringent heat load requirements of the CLIC tunnel, a permanent magnet (PM) design is under investigation in a collaboration between CERN and STFC Daresbury Laboratory. The design incorporates a novel method of adjustment based on moving PMs. To cover the full length of the decelerator, two families of quadrupoles have been designed. This paper outlines the challenges of building an adjustable PM quadrupole, and explains the features of the two designs and how they will meet the demanding specifications of the CLIC DBD.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2012.2191632