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Published Articles
Title	Design of a 120 mm Bore 15 T Quadrupole for the LHC Upgrade Phase II
Author(s)	Caspi, S (LBNL, Berkeley) ; Ambrosio, G (Fermilab) ; Anerella, M (Brookhaven Natl. Lab.) ; Barzi, E (Fermilab) ; Bossert, R (Fermilab) ; Cheng, D (LBNL, Berkeley) ; Dietderich, D (LBNL, Berkeley) ; Felice, H (LBNL, Berkeley) ; Ferracin, P (LBNL, Berkeley) ; Ghosh, A (Brookhaven Natl. Lab.) ; Hafalia, R (LBNL, Berkeley) ; Hannaford, R (LBNL, Berkeley) ; Kashikhin, V V (Fermilab) ; Pasholk, D (Fermilab) ; Sabbi, G L (LBNL, Berkeley) ; Schmalzle, J ; Wanderer, P (Brookhaven Natl. Lab.) ; Zlobin, A (Fermilab)
Publication	2010
Number of pages	4
In:	IEEE Trans. Appl. Supercond. 20 (2010) 144-147
In:	21st International Conference on Magnet Technology, Hefei, China, 18 - 23 Oct 2009, pp.144-147
DOI	10.1109/TASC.2010.2040147
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	LARP
Abstract	Future upgrades to machines like the Large Hadron Collider (LHC) at CERN will push accelerator magnets beyond 10 T forcing the replacement of NbTi superconductors with advanced superconductors such as Nb$_{3}$Sn. In support of the LHC Phase-II upgrade, the US LHC Accelerator Research Program (LARP) is developing a large bore (120 mm) Nb$_{3}$Sn Interaction Region (IR) quadrupole (HQ) capable of reaching 15 T at its conductor limit and gradients of 199 T/m at 4.4 K and 219 T/m at 1.9 K. The 1 m long, two-layer magnet, addresses coil alignment and accelerator quality features while exploring the magnet performance limits in terms of gradient, stress and structure. This paper summarizes and reports on the design, mechanical structure, coil windings, reaction and impregnation processes.

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