Progress in the Development of the Nb3Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Bermudez, Susana Izquierdo; Ambrosio, Giorgio; Apollinari, Giorgio; Bajko, Marta; Bordini, Bernardo; Bourcey, Nicolas; Ramos, Delio Duarte; Ferracin, Paolo; Fiscarelli, Lucio; Feher, Sandor; Fleiter, Jerome; Guinchard, Michael; Lackner, Friedrich; Lusa, Nicholas; Mangiarotti, Franco; Milanese, Attilio; Principe, Rosario; Perez, Juan Carlos; Prin, Herve; Pulikowski, Dariusz; Takala, Eelis; Ravaioli, Emmanuele; Todesco, Ezio

doi:10.1109/tasc.2021.3061352

Title: Progress in the Development of the Nb₃Sn MQXFB Quadrupole for the HiLumi Upgrade of the LHC

Journal Article · Tue Feb 23 00:00:00 EST 2021 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/tasc.2021.3061352· OSTI ID:1779476

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European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

The high-luminosity upgrade of the Large Hadron Collider (HL-LHC) requires new high field and large-aperture quadrupole magnets for the low-beta inner triplets (MQXF). With a nominal operating gradient of 132.2 T/m in a 150 mm aperture and a conductor peak field of 11.3 T, the new quadrupole magnets are based on Nb₃Sn superconducting technology. After a series of short models constructed in close collaboration by LARP (LHC Accelerator Research Program) and CERN, the development program is entering in the series production phase with CERN on one side and the US Accelerator Upgrade Project (US-AUP) on the other side assembling and testing full-length magnets. This paper describes the status of the development activities at CERN, in particular on the cold powering test of the first MQFXB prototype and on the construction of the second full scale prototype. Critical operations such as reaction heat treatment, coil impregnation and magnet assembly are discussed. Finally, the plan towards the series production is described.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1779476

Report Number(s):: FERMILAB-PUB-21-126-TD; oai:inspirehep.net:1860685; TRN: US2209655

Journal Information:: IEEE Transactions on Applied Superconductivity, Vol. 31, Issue 5; ISSN 1051-8223

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement

Country of Publication:: United States

Language:: English

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