Development of MQXF: The Nb₃Sn low-β quadrupole for the HiLumi LHC

Journal Article · Fri Dec 18 00:00:00 EST 2015 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2015.2510508· OSTI ID:1253583

Ferracin, P. ^[1]; Anerella, M. ^[2]; Ballarino, A. ^[1]; Bajas, H. ^[1]; Bajko, M. ^[1]; Bordini, B. ^[1]; Bossert, R. ^[3]; Cheng, D. W. ^[4]; Dietderich, D. R. ^[4]; Chlachidze, G. ^[3]; Cooley, L. ^[3]; Felice, H. ^[4]; Ghosh, A. ^[2]; Hafalia, R. ^[4]; Holik, E. ^[3]; Bermudez, S. Izquierdo ^[1]; Fessia, P. ^[1]; Grosclaude, P. ^[1]; Guinchard, M. ^[1]; Juchno, M. ^[1] ; Krave, S. ^[3]; Lackner, F. ^[1]; Marchevsky, M. ^[4]; Marinozzi, V. ^[5]; Nobrega, F. ^[3]; Oberli, L. ^[1]; Pan, H. ^[4]; Perez, J. C. ^[1]; Prin, H. ^[1]; Rysti, J. ^[1]; Rochepault, E. ^[1]; Sabbi, G. ^[4]; Salmi, T. ^[6]; Schmalzle, J. ^[2]; Sorbi, M. ^[5]; Tavares, S. Sequeira ^[1]; Todesco, E. ^[1]; Wanderer, P. ^[2]; Wang, X. ^[4]; Yu, M. ^[3]

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1. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
2. Brookhaven National Lab. (BNL), Upton, NY (United States)
3. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
5. INFN-LASA, Segrate (Italy)
6. Tampere Univ. of Technology, Tampere (Finland)

The High Luminosity (HiLumi) Large Hadron Collider (LHC) project has, as the main objective, to increase the LHC peak luminosity by a factor five and the integrated luminosity by a factor ten. This goal will be achieved mainly with a new interaction region layout, which will allow a stronger focusing of the colliding beams. The target will be to reduce the beam size in the interaction points by a factor of two, which requires doubling the aperture of the low-β (or inner triplet) quadrupole magnets. The use of Nb 3 Sn superconducting material and, as a result, the possibility of operating at magnetic field levels in the windings higher than 11 T will limit the increase in length of these quadrupoles, called MQXF, to acceptable levels. After the initial design phase, where the key parameters were chosen and the magnet's conceptual design finalized, the MQXF project, a joint effort between the U.S. LHC Accelerator Research Program and the Conseil Europeén pour la Recherche Nucleaíre (CERN), has now entered the construction and test phase of the short models. Concurrently, the preparation for the development of the full-length prototypes has been initiated. This paper will provide an overview of the project status, describing and reporting on the performance of the superconducting material, the lessons learnt during the fabrication of superconducting coils and support structure, and the fine tuning of the magnet design in view of the start of the prototyping phase.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Brookhaven National Lab. (BNL), Upton, NY (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; AC02-05CH11231
• OSTI ID: 1253583
• Alternate ID(s): OSTI ID: 1454468
• Report Number(s): FERMILAB-PUB-16-048-TD; 1423497
• Journal Information: IEEE Transactions on Applied Superconductivity, Vol. 26, Issue 4; ISSN 1051-8223
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
high luminosity
LHC
interaction regions
low-β quadrupoles
Nb3Sn magnets