CERN Accelerating science

CERN Document Server Znaleziono 38 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.60 sekund. 
1.
MuCol Milestone Report No. 5: Preliminary Parameters / MuCoL Collaboration
This document is comprised of a collection of updated preliminary parameters for the key parts of the muon collider. [...]
arXiv:2411.02966.
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Fermilab Library Server - Fulltext - Fulltext
2.
A Combined Testing and Modelling Methodology for the Mechanics of High-Field Superconducting Magnets / Bertarelli, Alessandro (CERN) ; Guinchard, Michael (CERN) ; Holko, Michal (CERN) ; Lackner, Friedrich (CERN) ; Masci, Marco (CERN) ; de Frutos, Oscar Sacristan (CERN) ; Savary, Frédéric (CERN) ; Wolf, Felix (CERN)
The use of superconducting composite cables based on Nb3Sn, an intermetallic compound of Niobium and Tin, is one of the favorite routes to reach magnetic fields higher than 10 T in state-of-the-art accelerator magnets. The brittle and nonlinear nature of the epoxy-impregnated Nb3Sn Rutherford cable makes challenging to predict its mechanical limits and, consequently, the overall performance of the magnet. [...]
2024 - 11 p. - Published in : IEEE Trans. Appl. Supercond. 34 (2024) 1-11 Fulltext: PDF;
3.
Beam-beam long range compensator mechanical demonstrator / Sito, Leonardo (CERN ; Naples U.) ; Rossi, Adriana (CERN) ; Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN) ; Carra, Federico (CERN) ; Motschmann, Fritz (CERN) ; Sterbini, Guido (CERN) ; Guardia Valenzuela, J (CERN) ; Gentini, Luca (CERN) ; Garlaschè, Marco (CERN) et al.
Beam-Beam Long-Range Compensators employing current-carrying wires are considered as valuable options in hadron colliders to increase dynamic aperture at small crossing angles. This paper presents a simple design proposal for application at CERN LHC. [...]
2023 - 3 p. - Published in : JACoW IPAC 2023 (2023) THPM015 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM015
4.
Wave-particle interactions in copper diamond / Portelli, Marcus (Malta U.) ; Pasquali, Michele (Rome U.) ; Carra, Federico (CERN) ; Bertarelli, Alessandro (CERN) ; Mollicone, Pierluigi (Malta U.) ; Sammut, Nicholas (Malta U.)
In the context of wave propagation in solids caused by particle-matter interactions, the composite structure of copper diamond is believed to have a significant impact on the material’s response. This limits the accuracy of isotropic homogeneous elastic and elastic-plastic models used in earlier studies modeling the material’s behavior under such conditions. [...]
2023 - 13 p. - Published in : Phys. Rev. Accel. Beams 26 (2023) 084501 Fulltext: PDF;
5.
A closed loop system to control transverse deformations in LHC collimators / Furness, Thomas (Huddersfield U.) ; Fletcher, Simon (Huddersfield U.) ; Williamson, James (Huddersfield U.) ; Martin, Haydn (Huddersfield U.) ; Redaelli, Stefano (CERN) ; Carra, Federico (CERN) ; Bertarelli, Alessandro (CERN) ; Pasquali, Michele (Rome U.)
This work presents a novel closed-loop control system for the detection and control of thermal deformations integrated in the secondary collimators of the Large Hadron Collider (LHC). Interactions between spurious particles lost transversally from the circulating beam core and the collimator jaws that make up the active area of the collimator will result in thermally induced deformations in those jaws. [...]
2023 - 15 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1050 (2023) 168128 Fulltext: PDF;
6.
Towards a Muon Collider / Accettura, Carlotta (CERN) ; Adams, Dean (Rutherford) ; Agarwal, Rohit (UC, Berkeley (main)) ; Ahdida, Claudia (CERN) ; Aimè, Chiara (Pavia U. ; INFN, Pavia) ; Amapane, Nicola (INFN, Turin ; Turin U.) ; Amorim, David (CERN) ; Andreetto, Paolo (INFN, Padua) ; Anulli, Fabio (INFN, Rome) ; Appleby, Robert (Manchester U.) et al.
A muon collider would enable the big jump ahead in energy reach that is needed for a fruitful exploration of fundamental interactions. The challenges of producing muon collisions at high luminosity and 10 TeV centre of mass energy are being investigated by the recently-formed International Muon Collider Collaboration. [...]
arXiv:2303.08533; FERMILAB-PUB-23-123-AD-PPD-T.- 2023-09-26 - 118 p. - Published in : Eur. Phys. J. C
- Published in : Eur. Phys. J. C Fulltext: 2303.08533 - PDF; FERMILAB-PUB-23-123-AD-PPD-T - PDF; Fulltext from Publisher: PDF; External links: JLab Document Server; Fermilab Library Server
7.
ADVANCED ENGINEERING SIMULATION METHODS DEVELOPED IN THE EN-MME ENGINEERING UNIT / Carra, Federico (CERN) ; Accettura, Carlotta (Politecnico di Milano (IT)) ; Amrani, Anas (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Artoos, Kurt (CERN) ; Baudin, Lucie (CERN) ; Bertarelli, Alessandro (CERN) ; Capatina, Ofelia (CERN) ; Dassa, Luca (CERN) ; Garlasche, Marco (CERN) ; Giordanino, Laurene et al.
The Engineering Unit within EN-MME is in charge of CERN-wide advanced computations and simulations. [...]
CERN-ACC-NOTE-2022-0025.
- 2022. - 4 p.
Full text
8.
New Methodology to Derive the Mechanical Behavior of Epoxy-Impregnated Nb$_3$Sn Cables / Fichera, Claudio (CERN) ; Bertarelli, Alessandro (CERN) ; Ferracin, Paolo (CERN) ; Guinchard, Michael (CERN) ; Sacristan de Frutos, Oscar (CERN) ; Vallone, Giorgio (CERN)
The Nb3Sn technology plays a crucial role in developing high-field superconducting magnets. The new-generation Nb3Sn cable greatly contributes to bring the magnetic field produced by the superconducting dipole magnets to the 16 T level; nevertheless, its mechanical properties are largely variable, making it difficult to predict the mechanical behavior of the magnet structure. [...]
2019 - 12 p. - Published in : IEEE Trans. Appl. Supercond. 29 (2019) 8401912
9.
Thermomechanical Characterisation of Copper Diamond and Benchmarking with the MultiMat Experiment / Portelli, Marcus (Malta U. ; CERN) ; Pasquali, Michele (Rome U.) ; Carra, Federico (CERN) ; Bertarelli, Alessandro (CERN) ; Mollicone, Pierluigi (Malta U.) ; Sammut, Nicholas (Malta U.) ; de Frutos, Óscar Sacristán (CERN) ; Valenzuela, Jorge Guardia (CERN) ; Neubauer, Erich (Austrian Inst. Tech., Seibersdorf) ; Kitzmantel, Michael (Austrian Inst. Tech., Seibersdorf) et al.
The High-Luminosity Large Hadron Collider upgrade at CERN will result in an increase in the energy stored in the circulating particle beams, making it necessary to assess the thermomechanical performance of currently used and newly developed materials for use in beam intercepting devices such as collimators and absorbers. This study describes the thermomechanical characterisation of a novel copper diamond grade selected for use in tertiary collimators of the HL-LHC. [...]
2021 - 18 p. - Published in : Shock and Vibration 2021 (2021) 8879400 Fulltext: PDF;
10.
Adaptive Collimator Design for Future Particle Accelerators / Furness, Thomas (Huddersfield U.) ; Bertarelli, Alessandro (CERN) ; Carra, Federico (CERN) ; Fletcher, Simon (Huddersfield U.) ; Gentini, Luca (CERN) ; Pasquali, Michele (CERN) ; Redaelli, Stefano (CERN) ; Williamson, James (Huddersfield U.)
The function of collimators in the LHC is to control and safely dispose of the halo particles that are produced by unavoidable beam losses from the circulating beam. Even tiny proportions of the 7TeV beam have the stored energy to quench the superconducting magnets or damage parts of the accelerator if left unchecked. [...]
JACoW, 2019 - 5 p. - Published in : 10.18429/JACoW-IBIC2018-TUPA15 Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.TUPA15

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