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1.
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Lessons learned from hardware failure during HL-LHC AUP cabling
/ Lee, Elizabeth (LBL, Berkeley) ; Baskys, Algirdas (CERN) ; Lin, Andy (LBL, Berkeley) ; Perez, Carlos (LBL, Berkeley) ; Buron, Elaine (LBL, Berkeley) ; Pong, Ian (LBL, Berkeley) ; Croteau, Jean-Francois (LBL, Berkeley) ; Naus, Michael (LBL, Berkeley) ; Lipton, Thomas (LBL, Berkeley)
The cabling facility at Lawrence Berkeley National Laboratory has experienced a heavy increase in workload during the US-HiLumi Accelerator Upgrade Project (AUP). Several critical components have experienced unexpected failure over the project’s lifetime for reasons at least partly attributable due to increased wear and tear on the hardware subsystems. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPS80
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPS80
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2.
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Microstructure Characterization of Nb$_3$Sn Wires With Nanoprecipitate Artificial Pinning Centers Using Synchrotron High-Energy X-Rays
/ Croteau, Jean-Francois (LBL, Berkeley) ; Baskys, Algirdas (LBL, Berkeley ; CERN) ; Naus, Michael (LBL, Berkeley) ; Park, Jun-Sang (Argonne, PHY) ; Kenesei, Peter (Argonne, PHY) ; Xu, Xingchen (Fermilab) ; Wan, Fang (Fermilab) ; Pong, Ian (LBL, Berkeley)
Synchrotron high-energy X-rays were used in an attempt to estimate nanoprecipitate size and size distribution in Nb$_3$Sn powder-in-tube wires with ZrO$_2$ or HfO$_2$ rtificial pinning centers via small angle X-ray scattering (SAXS). The effect of sample preparation was studied but measurements for as-received and for partially etched wires were not successful. [...]
2023 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8000505
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3.
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MQXFA Final Design Report
/ Ambrosio, Giorgio
The MQXFA Quadrupole magnets will be installed in High Luminosity LHC to form the Q1 and Q3 inner triplet optical elements in front of the interaction points 1 (ATLAS) and 5 (CMS) [...]
arXiv:2203.06723 ; FERMILAB-TM-2773-TD ; US-HiLumi-doc-948
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120.
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4.
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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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5.
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6.
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Cable Design and Development for the High-Temperature Superconductor Cable Test Facility Magnet
/ Pong, Ian (LBNL, Berkeley) ; Hafalia, Aurelio (LBNL, Berkeley) ; Higley, Hugh (LBNL, Berkeley) ; Lee, Elizabeth (LBNL, Berkeley) ; Lin, Andy (LBNL, Berkeley) ; Naus, Michael (LBNL, Berkeley) ; Perez, Carlos (LBNL, Berkeley) ; Prestemon, Soren (LBNL, Berkeley) ; Sabbi, GianLuca (LBNL, Berkeley) ; Hopkins, Simon (CERN) et al.
A large bore “High-Temperature Superconductor Cable Test Facility Magnet” for testing advanced cables and inserts in high transverse field is in its design phase. This magnet will be the core component of a facility for developing conductors and accelerator magnets operating above 15 T, an enabling technology for next-generation fusion devices using magnetic confinement of plasma and for future energy frontier colliders. [...]
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 1-5
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7.
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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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8.
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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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9.
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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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10.
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Magnetic and Mechanical 3-D Modelling of a 15 T Large Aperture Dipole Magnet
/ Araujo, Douglas Martins (CERN) ; Bottura, Luca (CERN) ; Bruzzone, Pierluigi (Ecole Polytechnique, Lausanne) ; Cau, Francesca (Fusion for Energy, Barcelona) ; Ferracin, Paolo (CERN) ; Pong, Ian (LBNL, Berkeley) ; Portone, Alfredo (Fusion for Energy, Barcelona) ; Prestemon, Soren (LBNL, Berkeley) ; Ravaioli, Emmanuele (CERN) ; Reccia, Luigi (Fusion for Energy, Barcelona) et al.
In 2018, two structures have been proposed with the goal of replacing the magnet EDIPO that stopped operating in 2016. These two solutions were designed to generate a field of 15 T on an aperture of 100 × 150 mm$^{2}$ at 4.2 K by using Nb3Sn superconducting Rutherford cable. [...]
2020 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4000705
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