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1.
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Chapter 6: Superconducting Magnet Technology for the IR Upgrade
/ Todesco, E (CERN) ; Ambrosio, G (Fermilab) ; Ferracin, P (LBL, Berkeley) ; Sabbi, G L (SLAC) ; Nakamoto, T (KEK, Tsukuba) ; Sugano, M (KEK, Tsukuba) ; Weelderen, R Van (CERN) ; Fabbricatore, P (INFN, Genoa) ; Farinon, S (INFN, Genoa) ; Toral, F (Madrid, CIEMAT) et al.
In this section we present the magnet technology for the High Luminosity LHC. After a short review of the project targets and constraints, we discuss the main guidelines used to determine the technology, the field/gradients, the operational margins, and the choice of the current density for each type of magnet. [...]
2024 - 33 p.
- Published in : Adv. Ser. Direct. High Energy Phys. 31 (2024) 165-197
Fulltext: PDF;
In : The High Luminosity Large Hadron Collider, pp.165-197
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2.
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Magnets for a Muon Collider—Needs and Plans
/ Bottura, L (CERN) ; Accettura, C (CERN) ; Amemiya, N (Kyoto U.) ; Auchmann, B (PSI, Villigen) ; Berg, J S (Brookhaven Natl. Lab.) ; Bersani, A (INFN, Genoa) ; Bertarelli, A (CERN) ; Boattini, F (CERN) ; Bordini, B (CERN) ; Borges de Sousa, P (CERN) et al.
We describe the magnet challenges for a Muon Collider, an exciting option considered for the future of particle physics at the energy frontier. Starting from the comprehensive work performed by the US Muon Accelerator Program, we have reviewed the performance specifications dictated by beam physics and the operating conditions to satisfy the accelerator needs. [...]
2024 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 1-8
Fulltext: PDF;
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AUP First Pre-Series Cryo-Assembly Design Production and Test Overview
/ Feher, S (Fermilab) ; Ambrosio, G (Fermilab) ; Apollinari, G (Fermilab) ; Baldini, M (Fermilab) ; Bossert, R (Fermilab) ; Carcagno, R (Fermilab) ; Chlachidze, G (Fermilab) ; DiMarco, J (Fermilab) ; Rabehl, R (Fermilab) ; Stoynev, S (Fermilab) et al.
New high field and large-aperture quadrupole magnets for the low-beta inner triplets (Q1, Q2, Q3) have been built and tested as part of the high-luminosity upgrade of the Large Hadron Collider (HL-LHC). These new quadrupole magnets are based on Nb3Sn superconducting technology. [...]
FERMILAB-CONF-23-0891-TD.-
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4005605
Fermilab Library Server: PDF; External link: Fermilab Library Server
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4.
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5.
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Measurement and Computation of Nb$_3$Sn Rutherford Cables Strength Under Multi-Axial Loading Conditions
/ Vallone, G (LBNL, Berkeley) ; Croteau, J F (LBNL, Berkeley) ; Anderssen, E (LBNL, Berkeley) ; Bordini, B (CERN) ; D'Addazio, M (LBNL, Berkeley ; Polytech. Turin) ; Ferracin, P (LBNL, Berkeley) ; Niccoli, F (Calabria U.)
Superconducting magnet coils are subject to large thermo-mechanical loads applied during magnet assembly, cooldown and operation. These loads can cause the reduction of their critical current due to mechanical strains or local filament failures. [...]
2024 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8400105
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6.
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Status of MQXFB quadrupole magnets for HL-LHC
/ Milanese, A (CERN) ; Ambrosio, G (Fermilab) ; Apollinari, G (Fermilab) ; Axensalva, J (CERN) ; Baldini, M (Fermilab) ; Ballarino, A (CERN) ; Barth, C (CERN) ; o, R Carcagn (Fermilab) ; Crouvizier, M (CERN) ; Devred, A (CERN) et al.
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. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) WEPM060
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.WEPM060
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7.
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High-Field Design Concept for Second Interaction Region of the Electron-Ion Collider
/ Gamage, Bamunuvita (Jefferson Lab) ; Arbelaez, Diego (LBNL, Berkeley) ; Aschenauer, Elke (Brookhaven) ; Berg, J (Brookhaven) ; Ent, Rolf (Jefferson Lab) ; Ferracin, Paolo (LBNL, Berkeley) ; Morozov, Vasiliy (ORNL, Oak Ridge (main)) ; Rajput-Ghoshal, Renuka (Jefferson Lab) ; Sabbi, GianLuca (LBNL, Berkeley) ; Satogata, Todd (Jefferson Lab) et al.
Efficient realization of the scientific potential of the Electron Ion Collider (EIC) calls for addition of a future second Interaction Region (2nd IR) and a detector in the RHIC IR8 region after the EIC project completion. The second IR and detector are needed to independently cross-check the results of the first detector, and to provide measurements with complementary acceptance. [...]
FERMILAB-CONF-22-989-TD.-
2022 - 3 p.
- Published in : JACoW NAPAC 2022 (2022) WEPA15
Fulltext: Publication - PDF; FERMILAB-CONF-22-989-TD - PDF; External links: JLAB Document Server; Fermilab Library Server
In : 4th North American Particle Accelerator Conference (NAPAC 2022), Albuquerque, NM, United States, 7-12 Aug 2022, pp.WEPA15
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8.
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Analysis of the Mechanical Performance of the 4.2-m-Long MQXFA Magnets for the Hi-Lumi LHC Upgrade
/ Garcia Fajardo, L. (LBL, Berkeley) ; Ambrosio, G. (Fermilab) ; Yahia, A. Ben (Brookhaven) ; Cheng, D.W. (LBL, Berkeley) ; Ferracin, P. (LBL, Berkeley) ; Ferradas Troitino, J. (CERN) ; Izquierdo Bermudez, S. (CERN) ; Muratore, J. (Brookhaven) ; Prestemon, S. (LBL, Berkeley) ; Ray, K.L. (LBL, Berkeley) et al.
Under the U.S. High Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP), the 150 mm bore, high-field Nb3Sn low-{̱e̱ṯa̱}̱ MQXFA quadrupole magnets are being fabricated, assembled and tested, in the context of the CERN Hi-Luminosity LHC (HL-LHC) upgrade. [...]
arXiv:2303.16795; FERMILAB-PUB-23-116-TD.-
2023-03-27 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003205
Fulltext: 2303.16795 - PDF; 4b8cc3a91b35c5867bfac57ac156409a - PDF; External link: Fermilab Accepted Manuscript
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9.
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A Novel Design for Improving the Control on the Stainless-Steel Vessel Welding Process for Superconducting Magnets
/ Vallone, G (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Anderssen, E (LBL, Berkeley) ; Fehrer, S (Fermilab) ; Ferracin, P (LBL, Berkeley) ; Ferradas Troitino, J (CERN)
Stainless steel vessels see widespread use in superconducting magnets for particle accelerator applications. Their function varies in different magnet designs: they always provide the necessary liquid helium containment, but in some cases are also used to provide azimuthal prestress and can also be welded to the magnet end plate to provide additional longitudinal stiffness. [...]
FERMILAB-PUB-22-858-TD.-
2023 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4001705
Fulltext: PDF; External link: Fermilab Library Server
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10.
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Status of the MQXFB Nb$_3$Sn quadrupoles for the HL-LHC
/ Izquierdo Bermudez, Susana (CERN) ; Ambrosio, Giorgio (Fermilab) ; Apollinari, Giorgio (Fermilab) ; Ballarino, Amalia (CERN) ; Barth, Christian (CERN) ; Crouvizier, Mickael Denis (CERN) ; Duarte Ramos, Delio (CERN) ; Devred, Arnaud (CERN) ; Feher, Sandor (Fermilab) ; Felice, Helene (CERN) et al.
The cold powering test of the first two prototypes of the MQXFB quadrupoles (MQXFBP1, now disassembled, and MQXFBP2), the Nb3Sn inner triplet magnets to be installed in the HL-LHC, has validated many features of the design, such as field quality and quench protection, but has found performance limitations. In fact, both magnets showed a similar phenomenology, characterized by reproducible quenches in the straight part inner layer pole turn, with absence of training and limiting the performance at 93% (MQXFBP1) and 98% (MQXFBP2) of the nominal current at 1.9 K, required for HL-LHC operation at 7 TeV. [...]
FERMILAB-PUB-22-860-TD.-
2023 - 9 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4001209
Fulltext: PDF; External link: Fermilab Library Server
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