CERN Accelerating science

Projects, Upgrade and Consolidation Projects

Letzte Einträge:
2024-03-14
17:53
Assembly and Test Results of the RMM1a,b Magnet, a CERN Technology Demonstrator Towards Nb3Sn Ultimate Performance / Gautheron, Emma (CERN) ; Bordini, Bernardo (CERN) ; Campagna, Guillaume (CERN) ; Felice, Hélène (CERN) ; Fleiter, Jerome (CERN) ; Guinchard, Michael (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Mugnier, Sylvain (CERN) ; Perez, Juan Carlos (CERN) ; Petrone, Carlo (CERN) et al.
As part of the High Field Magnet technology development carried out at CERN, demonstrators are under construction to explore the full potential of Nb 3 Sn. The Racetrack Model Magnet (RMM) is one of them, building upon the successful Enhanced Racetrack Model Coil (eRMC) eRMC1a magnet which reached 16.5 T peak field or 16.3 T bore field at 1.9 K. [...]
2023 - 8 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-8

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2024-03-14
17:53
Experience on Series Production of the HL-LHC Superferric High Order Corrector Magnets / Statera, M (Milan U.) ; Prioli, M (Milan U.) ; Broggi, F (Milan U.) ; De Matteis, E (Milan U.) ; Imeri, L (Milan U.) ; Leone, A (Milan U.) ; Mariotto, S (Milan U. ; INFN, Milan) ; Paccalini, A (Milan U.) ; Pasini, A (Milan U.) ; Pedrini, D (Milan U.) et al.
INFN has developed at the LASA lab (Milano, Italy) the High Order (HO) corrector magnets for the High Luminosity-LHC (HL-LHC) project, which will equip the new interaction regions. All the HO correctors, from skew quadrupole to dodecapole, are based on a novel superferric design, never used so far in high energy colliders, which allows a relatively simple, modular, and easy way to construct a magnet. [...]
2023 - 7 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 1-7

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2024-02-14
15:04
Design and implementation of a new Controller for CERN’s sub-ppm stable Current source / Nappi, Valerio
This work describes the design and development of the controller of the CERN DCTT Calibrator (CDC), a critical component in the power converter controls system in CERN’s facilities [...]
CERN-THESIS-2023-335 - 134 p.


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2024-02-07
06:24
Operational performance of crystal collimation with 6.37 $Z$ TeV Pb ion beams at the LHC / D'Andrea, M (CERN) ; Aberle, O (CERN) ; Bruce, R (CERN) ; Butcher, M (CERN) ; Di Castro, M (CERN) ; Cai, R (CERN) ; Lamas, I (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) et al.
The concept of crystal collimation relies on the use of bent crystals to coherently deflect positively charged particles with suitable impact conditions by trapping them in the potential well generated by adjacent crystalline planes. The resulting deflection is much higher than what can be achieved by multiple scattering on amorphous materials. [...]
2024 - 16 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 011002 Fulltext: PDF;

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2024-02-07
06:24
Acceptance Criteria Part B: LMQXFA cold mass and cryo-assembly / Carcagno, R (Fermilab)
This document specifies the acceptance criteria for the LMQXFA cold mass and cryoassembly. [...]
FERMILAB-TM-2815-TD ; LHC-LMQXFA-ES-0007 ; US-HiLumi-doc-1127.
- 16 p.
Fermilab Library Server - EDMS - Fulltext

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2024-02-07
06:23
Effect of transverse compressive stress applied at room temperature on Nb$_{3}$Sn Rutherford cables / Lenoir, Gilles (CERN) ; Puthran, Kirtana (CERN ; KIT, Karlsruhe, IAP) ; Barth, Christian (CERN) ; Fleiter, Jérôme (CERN) ; Ballarino, Amalia (CERN)
The accelerator magnets for the high luminosity upgrade of the large Hadron collider use Nb$_{3}$Sn conductor to achieve the required in-field performance. To sustain the Lorentz forces during operation, a pre-compression is applied to the coils during the fabrication of the magnet. [...]
2024 - 14 p. - Published in : Supercond. Sci. Technol. 37 (2024) 025013 Fulltext: PDF;

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2024-01-30
14:32
Advanced Loss Map Analysis for Performance Assessment of the LHC Collimation System / Ziliotto, Filippo (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Redaelli, Stefano (CERN) ; Van Der Veken, Frederik (CERN)
Due to the rapid progress of the LHC performance, it is essential to monitor the damage potential of the circulating beams. [...]
CERN-ACC-NOTE-2023-0026.
- 2023.
Full text

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2024-01-20
08:08
In-situ radiological classification and characterization methodology of activated cables in particle accelerators / Dyrcz, Patrycja (CERN) ; Infantino, Angelo (CERN) ; Menaa, Nabil (CERN) ; El-Idrissi, Safouane (CERN) ; Tromel, Christophe (CERN) ; Vincke, Heinz (CERN)
The estimation of induced radioactivity and radiological classification of activated material is necessary throughout the life cycle of the Large Hadron Collider (LHC) accelerator. As part of the upgrade to HighLuminosity LHC (HL-LHC), radiation protection assessments need to be performed in order to estimate the radiological hazard during the dismantling activities of the LHC cables. [...]
2024 - 5 p. - Published in : Radiat. Phys. Chem. 216 (2024) 111439 Fulltext: PDF;

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2024-01-20
06:36
Development and Qualification of High Current Splices and Electrical Connections for the HL-LHC Magnets / Principe, R (CERN) ; Izquierdo-Bermudez, S (CERN) ; Milanese, A (CERN) ; Prin, H (CERN) ; Sgobba, S (CERN) ; Todesco, E (CERN)
The continuity of the 18, 13, and 2 kA circuits of the HL-LHC magnets heavily relies on splices and electrical connections, to which it is worth devoting a special attention from the early phases. This spans the design of the splice or connection itself, together with the tooling and related procedure, so that the execution can reliably yield high quality results. [...]
2024 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4800104

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2024-01-20
06:36
Field Quality Analysis of the Separation-Recombination Dipole MBRD for the High-Luminosity Upgrade of LHC / Pampaloni, A (INFN, Genoa) ; Bersani, A (INFN, Genoa) ; Bracco, M (INFN, Genoa ; Genoa U.) ; Caiffi, B (INFN, Genoa) ; Farinon, S (INFN, Genoa) ; Fiscarelli, L (CERN) ; Foussat, A (CERN) ; Gagno, A (INFN, Genoa ; Genoa U.) ; Levi, F (INFN, Genoa) ; Ninet, G (CERN) et al.
The Main Bending Recombination Dipole (MBRD), or D2, is one of the magnets foreseen by the High-Luminosity upgrade of the Large Hadron Collider (LHC). D2 features a double aperture, Nb-Ti, cos $\theta$dipole, with a central field of 4.5 T for a length of 7.78 m, hence with an integrated magnetic field of 35 T$\cdot$m, in a 105 mm bore. [...]
2024 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 4000505

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High Luminosity Large Hadron Collider (HL-LHC) (1,140)
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