CERN Accelerating science

Published Articles
Report number	FERMILAB-PUB-16-048-TD
Title	Development of MQXF: The Nb$_{3}$Sn Low-$\beta$ Quadrupole for the HiLumi LHC
Author(s)	Ferracin, P (CERN) ; Ambrosio, G (Fermilab) ; Anerella, M (Brookhaven) ; Ballarino, A (CERN) ; Bajas, H (CERN) ; Bajko, M (CERN) ; Bordini, B (CERN) ; Bossert, R (Fermilab) ; Cheng, D W (LBL, Berkeley) ; Dietderich, D R (LBL, Berkeley) ; Chlachidze, G (Fermilab) ; Cooley, L (Fermilab) ; Felice, H (LBL, Berkeley) ; Ghosh, A (Brookhaven) ; Hafalia, R (LBL, Berkeley) ; Holik, E (Fermilab) ; Izquierdo Bermudez, S (CERN) ; Fessia, P (CERN) ; Grosclaude, P (CERN) ; Guinchard, M (CERN) ; Juchno, M (CERN) ; Krave, S (Fermilab) ; Lackner, F (CERN) ; Marchevsky, M (LBL, Berkeley) ; Marinozzi, V (LASA, Segrate) ; Nobrega, F (Fermilab) ; Oberli, L (CERN) ; Pan, H (LBL, Berkeley) ; Perez, J C (CERN) ; Prin, H (CERN) ; Rysti, J (CERN) ; Rochepault, E (CERN) ; Sabbi, G (LBL, Berkeley) ; Salmi, T (Tampere U. of Tech.) ; Schmalzle, J (Brookhaven) ; Sorbi, M (LASA, Segrate) ; Sequeira Tavares, S (CERN) ; Todesco, E (CERN) ; Wanderer, P (Brookhaven) ; Wang, X (LBL, Berkeley) ; Yu, M (Fermilab)
Publication	2016
Number of pages	7
In:	IEEE Trans. Appl. Supercond. 26 (2016) 4000207
In:	24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4000207
DOI	10.1109/TASC.2015.2510508
Subject category	Accelerators and Storage Rings
Abstract	The High Luminosity (HiLumi) Large Hadron Collider (LHC) project has, as the main objective, to increase the LHC peak luminosity by a factor five and the integrated luminosity by a factor ten. This goal will be achieved mainly with a new interaction region layout, which will allow a stronger focusing of the colliding beams. The target will be to reduce the beam size in the interaction points by a factor of two, which requires doubling the aperture of the low-β (or inner triplet) quadrupole magnets. The use of Nb$_{3}$Sn superconducting material and, as a result, the possibility of operating at magnetic field levels in the windings higher than 11 T will limit the increase in length of these quadrupoles, called MQXF, to acceptable levels. After the initial design phase, where the key parameters were chosen and the magnet's conceptual design finalized, the MQXF project, a joint effort between the U.S. LHC Accelerator Research Program and the Conseil Européen pour la Recherche Nucléaire (CERN), has now entered the construction and test phase of the short models. Concurrently, the preparation for the development of the full-length prototypes has been initiated. This paper will provide an overview of the project status, describing and reporting on the performance of the superconducting material, the lessons learnt during the fabrication of superconducting coils and support structure, and the fine tuning of the magnet design in view of the start of the prototyping phase.

Corresponding record in: Inspire