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IPAC'23 - 14th International Particle Accelerator Conference

7–12 May 2023
Venice, Italy
Europe/Zurich timezone

IPAC'23

Status of MQXFB quadrupole magnets for HL-LHC

WEPM060
10 May 2023, 16:30
2h
Sala Mosaici 2

Sala Mosaici 2
Poster Presentation MC7.T10: Superconducting Magnets Wednesday Poster Session

Speaker

Attilio Milanese (European Organization for Nuclear Research)

Description

The MQXFB magnets are superconducting quadrupoles with nominal peak field on the conductor of 11.3 T. With their magnetic length of 7.2 m, they stand as the longest Nb3Sn accelerator magnets designed and manufactured up to now. Together with the companion MQXFA 4.2 m long units, built by the US Accelerator Research Program, they are at the heart of HL-LHC, as they shall replace the inner triplet quadrupoles at either side of the ATLAS and CMS interaction regions of the LHC. This technology has benefited from many years of development, and this specific design was validated with successful short models (MQXFS, 1.2 m long). More recently, several MQXFA magnets were shown to satisfy HL-LHC requirements. In this paper, we report on the cold test results of four MQXFB magnets, focusing on performance, training, behavior after thermal and powering cycles, and field quality. We then provide an update of the overall status, including ongoing verifications of design changes at the level of the coil fabrication.

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Primary author

Attilio Milanese (European Organization for Nuclear Research)

Co-authors

Alice Moros (European Organization for Nuclear Research (CERN)) Amalia Ballarino (European Organization for Nuclear Research) Antonios Vouris (Fermi National Accelerator Laboratory) Arnaud Devred (European Organization for Nuclear Research) Carlo Petrone (European Organization for Nuclear Research) Christian Barth (European Organization for Nuclear Research) Delio Duarte Ramos (European Organization for Nuclear Research) Emmanuele Ravaioli (Lawrence Berkeley National Laboratory) Ezio Todesco (European Organization for Nuclear Research) Franco Mangiarotti (European Organization for Nuclear Research) Gerard Willering (European Organization for Nuclear Research) Giorgio Ambrosio (Fermi National Accelerator Laboratory) Giorgio Apollinari (Fermi National Accelerator Laboratory) Herve Prin (European Organization for Nuclear Research) Jerome Axensalva (European Organization for Nuclear Research) Jose Ferradas Troitino (European Organization for Nuclear Research) Lucio Fiscarelli (European Organization for Nuclear Research) Maria Baldini (Fermi National Accelerator Laboratory) Michael Guinchard (European Organization for Nuclear Research) Mickaël Crouvizier (European Organization for Nuclear Research) Nicholas Lusa (European Organization for Nuclear Research) Dr Paolo Ferracin (Lawrence Berkeley National Laboratory) Penelope Matilde Quassolo (European Organization for Nuclear Research) Piotr Rogacki (European Organization for Nuclear Research) Rosario Principe (European Organization for Nuclear Research) Ruben Carcagno (Fermi National Accelerator Laboratory) Sandor Feher (Fermi National Accelerator Laboratory) Stefano Sgobba (European Organization for Nuclear Research) Stephan Russenschuck (European Organization for Nuclear Research) Mrs Susana Izquierdo Bermudez (CERN) Thomas Strauss (Fermi National Accelerator Laboratory)

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