CERN Accelerating science

Article
Title	Test of short model and prototype of the HL-LHC D2 orbit corrector based on CCT technology
Related title	Test of short model and prototype of the HL-LHC D2 orbit corrector based on CCT technology
Author(s)	Mangiarotti, Franco (CERN) ; Kirby, Glyn (CERN) ; Duda, Michal (Cracow, INP ; CERN) ; Mentink, Matthias (CERN) ; Fiscarelli, Lucio (CERN) ; Bajko, Marta (CERN) ; Coll, Dominic (Unlisted, GB) ; Desbiolles, Vincent (CERN) ; Feuvrier, Jerome (CERN) ; Mazet, Jacky (CERN) ; van Nugteren, Jeroen (CERN) ; Pepitone, Kevin (Uppsala U.) ; Pincot, Francois Olivier (CERN) ; de Rijk, Gijs (CERN) ; Robertson, Jeff (Unlisted, GB) ; Steckert, Jens (CERN) ; Todesco, Ezio (CERN) ; Willering, Gerard (CERN)
Publication	2019
Number of pages	5
In:	IEEE Trans. Appl. Supercond. 29 (2019) 4002305
In:	Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.4002305
DOI	10.1109/TASC.2019.2897347
Subject category	Accelerators and Storage Rings
Abstract	In the frame of the high-luminosity upgrade project for the large hadron collider, new twin aperture beam orbit corrector magnets will be installed near the recombination dipole (D2). These magnets are 2.2 m long canted cosine theta NbTi dipoles, with two independently powered apertures oriented such that their field vectors are perpendicular to each other and to the direction of the beams. A 0.5 m model magnet in single and double aperture configuration and a full-length double aperture prototype were built and tested at CERN. In this paper, the performance of these magnets at 1.9 K in terms of training behavior, quench detection and protection, and other tests is discussed. In addition, the thermal response of the magnet to a hypothetical beam discharge is simulated and analyzed.

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