CERN Accelerating science

CERN Document Server 33 records found  1 - 10nextend  jump to record: Search took 0.67 seconds. 
1.
Design and manufacture of the supports for the ATLAS barrel strip staves / Yang, Qing (University of Oxford (GB)) ; Viehhauser, Georg (University of Oxford (GB)) ; Claybaugh, Todd Masao (Lawrence Berkeley National Lab. (US)) ; Anderssen, Eric (Lawrence Berkeley National Lab. (US)) ; Cooper, Liam James (Science and Technology Facilities Council STFC (GB)) ; Evans, Charles /ATLAS Collaboration
In the ATLAS barrel strip system silicon strip modules are mounted on local supports (staves). The staves are supported on four large concentric carbon fibre support cylinders. [...]
ATL-ITK-SLIDE-2024-127.- Geneva : CERN, 2024 - 24 p. Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
2.
A Review of the Mechanical Properties of Materials Used in Nb3Sn Magnets for Particle Accelerators / Vallone, G (LBNL, Berkeley) ; Anderssen, E (LBNL, Berkeley) ; Bordini, B (CERN) ; Ferracin, P (LBNL, Berkeley)
Superconducting magnets experience significant thermo-mechanical loads throughout their life cycle. These are introduced by the electro-magnetic forces during powering, but also by the prestress applied in many magnet designs. [...]
2023 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4002806
3.
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
4.
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
5.
ALICE upgrades during the LHC Long Shutdown 2 / ALICE Collaboration
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. [...]
arXiv:2302.01238; CERN-EP-2023-009.- Geneva : CERN, 2024-05-23 - 159 p. - Published in : JINST 19 (2024) P05062 Draft (restricted): PDF; Fulltext: document - PDF; 2302.01238 - PDF;
In : The Large Hadron Collider and The Experiments for Run 3
6.
Failure Assessments for MQXF Magnet Support Structure with a Graded Approach / Pan, Heng (LBL, Berkeley) ; Anderssen, Eric C (LBL, Berkeley) ; Cheng, Daniel W (LBL, Berkeley) ; Prestemon, Soren O (LBL, Berkeley) ; Ambrosio, Giorgio (Fermilab)
The High-Luminosity Large Hadron Collider (HLLHC) upgrade requires new quadrupoles, MQXF, to replace the present LHC inner triplets. The MQXFA magnet is the first prototype that has a 150 mm aperture and uses Nb3Sn superconducting technology in a 4.2 m magnetic length structure. [...]
FERMILAB-PUB-19-057-TD.- 2019 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 8401507 Fulltext: PDF; External link: Fermilab Accepted Manuscript
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.8401507
7.
Mechanical Characterization of Low-Carbon Steels for High-Field Accelerator Magnets: Application to Nb$_{3}$Sn Low-$\beta$ Quadrupole MQXF / Aviles Santillana, I (CERN) ; Vallone, G (LBNL, Berkeley) ; Anderssen, E (LBNL, Berkeley) ; Izquierdo Bermudez, S (CERN) ; Bonnin, S (CERN) ; Crouvizier, M. D. (CERN) ; Principe, R (CERN) ; Sgobba, S (CERN) ; Weiss, K P (KIT, Karlsruhe, TP) ; Bagrets, N (KIT, Karlsruhe, TP) et al.
In the quest for higher field accelerator superconducting magnets, essential parts of their design are the so called yokes, which are traditionally made of low – carbon magnetic steel. In currently used magnets, they are typically found in the form of fine – blanked laminations, or machined from laminated heavy plates. [...]
2022 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4100507
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4100507
8.
First demonstration of in-beam performance of bent Monolithic Active Pixel Sensors / ALICE ITS project Collaboration
A novel approach for designing the next generation of vertex detectors foresees to employ wafer-scale sensors that can be bent to truly cylindrical geometries after thinning them to thicknesses of 20-40$\mu$m. To solidify this concept, the feasibility of operating bent MAPS was demonstrated using 1.5$\times$3cm ALPIDE chips. [...]
arXiv:2105.13000.- 2022-04-01 - 14 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1028 (2022) 166280 Fulltext: PDF;
9.
A methodology to compute the critical current limit in Nb$_3$Sn magnets / Vallone, G (LBNL, Berkeley) ; Anderssen, E (LBNL, Berkeley) ; Bordini, B (CERN) ; Ferracin, P (LBNL, Berkeley) ; Troitino, J F (CERN) ; Prestemon, S (LBNL, Berkeley)
Numerous experiments have shown that the loads applied to Nb$_3$Sn strands and cables can reduce their critical current. Experiments, performed on uniaxially loaded strands, allowed to define clear laws to describe the evolution of the critical surface as a function of the applied current, field, temperature and strain. [...]
2021 - 13 p. - Published in : Supercond. Sci. Technol. 34 (2021) 025002
10.
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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5 Anderssen, E.
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