August 27, 2017 to September 1, 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Summary of test results of MQXFS1 - the first short model 150 mm aperture Nb3Sn quadrupole for the High-Luminosity LHC upgrade

Aug 30, 2017, 3:15 PM


Regular 15 minutes Oral Presentation A1 - Superconducting Accelerator Magnets Wed-Af-Or23


Stoyan Stoynev (FNAL (US))


The development of Nb3Sn quadrupole magnets for the High-Luminosity LHC upgrade is a joint venture between the US LHC Accelerator Research Program (LARP) and CERN with the goal of fabricating large aperture quadrupoles for the LHC interaction regions (IR). The inner triplet (low-β) NbTi quadrupoles in the IR will be replaced by the stronger Nb3Sn magnets boosting the LHC program of having 10-fold increase in integrated luminosity after the foreseen upgrades. Previously LARP conducted successful tests of short and long models with up to 120 mm aperture. The first short 150 mm aperture quadrupole model MQXFS1 was assembled with coils fabricated by both CERN and FNAL. The magnet demonstrated strong performance at the Fermilab’s vertical test facility reaching the LHC operating limits. This paper reports the latest results from MQXFS1 tests with changed pre-stress levels. The overall magnet performance, including quench training and memory, ramp rate and temperature dependence, is also summarized.

Submitters Country USA

Primary authors


Fred Nobrega (Fermilab) Michael Guinchard (CERN) Eddie Frank Holik Paolo Ferracin (CERN) Xiaorong Wang (Lawrence Berkeley National Laboratory) Thomas Strauss (Fermilab) Giorgio Ambrosio (Fermilab) Jesse Schmalzle (Brookhaven National Laboratory) Helene Felice (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR)) Steve Krave (Fermilab) Tiina Salmi (Lawrence Berkeley National Laboratory) Michael Anerella (Brookhaven National Laboratory) Rodger Clayton Bossert (CERN) Daniel Cheng Aurelio Hafalia (Unknown) Susana Izquierdo Bermudez (CERN) Dr Emmanuele Ravaioli (LBNL) Ezio Todesco (CERN) Philippe Grosclaude Arup Ghosh (Brookhaven National Laboratory) Heng Pan (LBNL) Cosmore Sylvester (FNAL) Eugenio Cavanna Giorgio Vallone (CERN) Peter Wanderer Daniel Dietderich (Lawrence Berkeley National Laboratory) Juan Carlos Perez (CERN) Soren Prestemon (LBNL) Miao Yu (Fermilab) Maxim Marchevsky (Lawrence Berkeley National Lab. (US)) GianLuca Sabbi (LBNL) Michael Tartaglia (Fermilab) Darryl Orris (FNAL)

Presentation materials