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1.
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Model-Based System Engineering Framework for Superconducting Accelerator Magnet Design
/ Maciejewski, Michał (ETH, Zurich (main)) ; Auchmann, Bernhard (CERN ; PSI, Villigen) ; Araujo, Douglas Martins (PSI, Villigen) ; Vallone, Giorgio (LBNL, Berkeley) ; Leuthold, Juerg (ETH, Zurich (main)) ; Smajic, Jasmin (ETH, Zurich (main))
The design specification of future high-field accelerator magnets require innovation in and integration of multiple disciplines. Numerical models underpin each step of the design. [...]
2023 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003105
External link: accepted manuscript
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Challenges and Lessons Learned From Fabrication, Testing, and Analysis of Eight MQXFA Low Beta Quadrupole Magnets for HL-LHC
/ Ambrosio, Giorgio (Fermilab) ; Amm, Kathleen (Brookhaven) ; Anerella, Michael (Brookhaven) ; Apollinari, Giorgio (Fermilab) ; Izquierdo, Gonzalo Arnau (CERN) ; Baldini, Maria (Fermilab) ; Ballarino, Amalia (CERN) ; Barth, Christian (CERN) ; Yahia, Anis Ben (Brookhaven) ; Blowers, James (Fermilab) et al.
By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements of the High Luminosity LHC. [...]
arXiv:2301.09523; FERMILAB-PUB-22-855-TD.-
2023-08 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003508
Fulltext: 2301.09523 - PDF; 81b192c337ae5d5acaec37450e135529 - PDF; External link: Fermilab Library Server
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4.
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Lessons learned from the prototypes of the MQXFA Low Beta Quadrupoles for HL-LHC and status of production in the US
/ Ambrosio, Giorgio (Fermilab) ; Amm, Kathleen (BNL, NSLS) ; Anerella, Michael (BNL, NSLS) ; Apollinari, Giorgio (Fermilab) ; Baldini, Maria (Fermilab) ; Blowers, Jamie (Fermilab) ; Bossert, Rodger (Fermilab) ; Carcagno, Ruben (Fermilab) ; Cheng, Daniel W (BNL, NSLS) ; Chlachidze, Guram (Fermilab) et al.
With the successful test of the first two pre-series magnets the US HL-LHC Accelerator Upgrade Project has started production of the MQXFA magnets to be used in Q1/Q3 inner triplet elements of the HL-LHC. This good start comes after the test of two prototypes with limited performance, and it demonstrates the importance of learning from past issues. [...]
FERMILAB-PUB-20-618-TD.-
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4001105
Fulltext: PDF;
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5.
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Magnetic and Mechanical Analysis of a Large Aperture 15 T Cable Test Facility Dipole Magnet
/ Vallone, Giorgio (LBL, Berkeley) ; Arbelaez, Diego (LBL, Berkeley) ; Araujo, Douglas Martins (CERN) ; Ballarino, Amalia (CERN) ; Ferracin, Paolo (LBL, Berkeley) ; Hafalia, Aurelio (LBL, Berkeley) ; Hopkins, Simon (CERN) ; Marinozzi, Vittorio (Fermilab) ; Pong, Ian (LBL, Berkeley) ; Prestemon, Soren (LBL, Berkeley) et al.
The US Department of Energy (DOE) Office of Science (SC), is funding a large bore “Cable Test Facility Magnet” for testing advanced cables and inserts in high transverse field. This is a joint effort between the Office of High Energy Physics (HEP) and the Office of Fusion Energy Sciences (FES). [...]
2021 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 9500406
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6.
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Progress on the Upgrade of EDIPO, a 15 T Large Aperture Dipole
/ Araujo, Douglas Martins (CERN) ; Ballarino, Amalia (CERN) ; Bordini, Bernardo (CERN) ; Bottura, Luca (CERN) ; Hopkins, Simon C (CERN) ; Perez, Juan C (CERN) ; Ravaioli, Emmanuele (CERN) ; de Rijk, Gijs (CERN) ; Bruzzone, Pierluigi (Ecole Polytechnique, Lausanne) ; Sarasola, Xabier (Ecole Polytechnique, Lausanne) et al.
The upgraded magnet assembly of the EDIPO test facility aims at generating 15 T at 4.2 K and 85% of short sample limit in a large rectangular aperture and over a uniform field length of 1000 mm. During 2020 the design studies have concentrated on two flared-end block-coil design options with four double-pancake coils, two per pole. [...]
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 9500205
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7.
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Design of Radiation Hard Spare Units for the Orbit Corrector Dipoles of LHC
/ Louzguiti, Alexandre (CERN) ; Cerutti, Francesco (CERN) ; Contat, Pierre-Antoine (CERN) ; Fagundes de Sousa, Daniela (CERN) ; Kirby, Glyn (CERN) ; Lepoittevin, Benoit (CERN) ; Liberale, Mattia (CERN) ; Mazet, Jacky (CERN) ; Ravaioli, Emmanuele (CERN) ; Sahner, Thomas (CERN) et al.
Due to the High Luminosity upgrade of the Large Hadron Collider (HL-LHC), the orbit corrector dipoles located just before the interaction points of the accelerator will receive significantly increased gamma radiation doses, i.e., up to 20 MGy over the HL-LHC lifetime. Since these magnets were not designed to withstand such high gamma doses, new MCBC and MCBY magnets have to be designed and produced using radiation hard impregnation insulation and materials. [...]
2020 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4001205
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9.
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Preload Characterization of Short Models of MQXF the Nb$_3$Sn Low-$β$ Quadrupole for the Hi-Lumi LHC
/ Takala, Eelis (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bourcey, Nicolas (CERN) ; Cheng, Daniel W (LBL, Berkeley) ; Ferracin, Paolo (CERN) ; Guinchard, Michael (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Mangiarotti, Franco (CERN) ; Pan, Heng (LBL, Berkeley) ; Perez, Juan Carlos (CERN) et al.
MQXF is the Nb$_3$Sn Low-β Quadrupole magnet that the HL-LHC project is planning to install in the LHC interaction regions in 2026 as part of an upgrade to increase the LHC inte-grated luminosity by about a factor of ten. The magnet will be fab-ricated in two different lengths: 4.2 m for MQXFA, built in the US by the Accelerator Upgrade Project (AUP), and 7.15 m for MQXFB, fabricated by CERN. [...]
FERMILAB-PUB-20-119-TD.-
2020 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4002806
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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10.
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Fracture failure analysis for MQXFA magnet aluminum shells
/ Pan, Heng (LBNL, Berkeley) ; Anderssen, Eric C (LBNL, Berkeley) ; Ambrosio, Giorgio (Fermilab) ; Cheng, Daniel W (LBNL, Berkeley) ; Ferracin, Paolo (CERN) ; Prestemon, Soren O (LBNL, Berkeley) ; Takala, Eelis Tapani (CERN) ; Vallone, Giorgio (LBNL, Berkeley)
The High-Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP) is approaching the production phase of the US-contributed Q1 and Q3 Interaction Region Quadrupoles (MQXFA). The structures for the MQXFA prototypes were design and inspected by the US-LARP (LHC Accelerator Research Program), AUP developed criteria, which will be used for the pre-series structures. [...]
FERMILAB-PUB-20-118-TD.-
2020 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4002307
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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