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DiMarco, J.; Akella, P.; Ambrosio, G.; Baldini, M.; Chlachidze, G.; Feher, S.; Nogiec, J.; Nikolic, V.; Stoynev, S.; Strauss, T.; Tartaglia, M.; Thompson, P.; Walbridge, D.
IEEE transactions on applied superconductivity, 08/2024, Letnik: 34, Številka: 5Journal Article
MQXFA production series quadrupole magnets are being built for the Hi-Lumi (HL) LHC upgrade by the U.S. Accelerator Upgrade Project (US-HL-LHC AUP). These magnets are being placed in pairs, as a cold mass, within cryostats at Fermilab, and are being tested to assess alignment and magnetic performance at Fermilab's horizontal test stand facility. The ∼10 m - long assembly must meet stringent specifications for quadrupole strength and harmonic field integrals determination, magnetic axis position, and for magnet variations in positioning and local field profile. This paper describes the results of the magnetic and alignment measurements which characterize the first LQXFA/B assembly.
