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Report number	FERMILAB-CONF-16-340-TD
Title	Performance of the first short model 150 mm aperture Nb$_3$Sn Quadrupole MQXFS for the High-Luminosity LHC upgrade
Author(s)	Chlachidze, G (Fermilab) ; Ambrosio, G (Fermilab) ; Anerella, M (Brookhaven) ; Bossert, R (Fermilab) ; Cavanna, E (CERN) ; Cheng, D (Fermilab) ; Dietderich, D (LBL, Berkeley) ; DiMarco, J (Fermilab) ; Felice, H (Saclay) ; Ferracin, P (CERN) ; Ghosh, A (Brookhaven) ; Grosclaude, P (CERN) ; Guinchard, M (CERN) ; Hafalia, A R (LBL, Berkeley) ; Holik, E (Fermilab) ; Izquierdo Bermudez, S (CERN) ; Krave, S (Fermilab) ; Marchevsky, M (LBL, Berkeley) ; Nobrega, F (Fermilab) ; Orris, D (Fermilab) ; Pan, H (LBL, Berkeley) ; Perez, J C (CERN) ; Prestemon, S (LBL, Berkeley) ; Ravaioli, E (LBL, Berkeley) ; Sabbi, G L (LBL, Berkeley) ; Salmi, T (Tampere U. of Tech.) ; Schmalzle, J (Brookhaven) ; Stoynev, S (Fermilab) ; Strauss, T (Fermilab) ; Sylvester, C (Fermilab) ; Tartaglia, M (Fermilab) ; Todesco, E (CERN) ; Vallone, G (CERN) ; Velev, G (Fermilab) ; Wanderer, P (Brookhaven) ; Wang, X (LBL, Berkeley) ; Yu, M (Fermilab)
Collaboration	LARP
Publication	2017
Imprint	2016-08-30
Number of pages	5
In:	IEEE Trans. Appl. Supercond. 27 (2017) 4000205
In:	Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.4000205
DOI	10.1109/TASC.2016.2629001
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	LARP
Abstract	The US LHC Accelerator Research Program (LARP) and CERN combined their efforts in developing Nb$_{3}$Sn magnets for the High-Luminosity LHC upgrade. The ultimate goal of this collaboration is to fabricate large aperture Nb$_{3}$Sn quadrupoles for the LHC interaction regions (IR). These magnets will replace the present 70 mm aperture NbTi quadrupole triplets for expected increase of the LHC peak luminosity by a factor of 5. Over the past decade LARP successfully fabricated and tested short and long models of 90 mm and 120 mm aperture Nb$_{3}$Sn quadrupoles. Recently the first short model of 150 mm diameter quadrupole MQXFS was built with coils fabricated both by the LARP and CERN. The magnet performance was tested at Fermilab’s vertical magnet test facility. This paper reports the test results, including the quench training at 1.9 K, ramp rate and temperature dependence studies.

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