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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
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Numerical simulation of long rods impacted by particle beams
/ Portelli, Marcus (CERN ; U. Malta) ; Bertarelli, A (CERN) ; Carra, F (CERN) ; Mettler, L K (CERN) ; Mollicone, P (U. Malta) ; Sammut, N (U. Malta)
Analytical solutions detailing the propagation of longitudinal waves in slender rods subjected to a sudden increase of internal energy provide simple tools for the calculation of the temperature distribution in impacted rods as well as the resulting mechanical response. The topic is of great interest in particle accelerator technology, especially with regards to collimation systems, where beam intercepting devices can be generally approximated to one-dimensional (1D) elements potentially subjected, in accidental scenarios, to abrupt thermal energy depositions induced by the impacting particles. [...]
2018 - 13 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 063501
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Numerical and experimental benchmarking of the dynamic response of SiC and TZM specimens in the MultiMat experiment
/ Portelli, Marcus (U. Malta ; CERN) ; Bertarelli, Alessandro (CERN) ; Carra, Federico (CERN) ; Pasquali, Michele (CERN) ; Sammut, Nicholas (U. Malta) ; Mollicone, Pierluigi (U. Malta)
The MultiMat experiment was successfully conducted at CERN's HiRadMat facility, aiming to test novel high-performance materials for use in beam intercepting devices, allowing the derivation and validation of material constitutive models. This article provides an analysis of results for two materials tested in the experiment, namely Silicon Carbide and Titanium Zirconium Molybdenum, with the aim of benchmarking the material constitutive models currently available in literature with experimental results. [...]
2019
- Published in : Mech. Mater. 138 (2019) 103169
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Dynamic Testing and Characterization of Advanced Materials in a New Experiment at CERN HiRadMat Facility
/ Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN ; Milan Polytechnic) ; Berthomé, Emmanuel (CERN) ; Bianchi, Laura (CERN) ; Bolz, Philipp (Darmstadt, GSI) ; Carra, Federico (CERN) ; Fichera, Claudio (CERN) ; Frankl, Matthias (CERN) ; Furness, Thomas (Huddersfield U.) ; Gobbi, Giorgia (CERN) et al.
An innovative and comprehensive experiment (named “Multimat”) was successfully carried out at CERN HiRadMat facility on 18 different materials relevant for Collimators and Beam Intercepting Devices. Material samples, tested under high intensity proton pulses of 440 GeV/c, exceeding the energy density expected in HL-LHC, ranged from very light carbon foams to tungsten heavy alloys, including novel composites as graphite/carbides and metal/diamond without and with thin-film coatings. [...]
CERN-ACC-2018-064.-
2018 - 8 p.
- Published in : (2018) , pp. WEPMF071
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 082021
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF071
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Thermostructural characterization and structural elastic property optimization of novel high luminosity LHC collimation materials at CERN
/ Borg, M (Malta U.) ; Bertarelli, A (CERN) ; Carra, F (CERN) ; Gradassi, P (CERN) ; Guardia-Valenzuela, J (CERN) ; Guinchard, M (CERN) ; Arnau Izquierdo, G (CERN) ; Mollicone, P (Malta U.) ; Sacristan-de-Frutos, O (CERN) ; Sammut, N (Malta U.)
The CERN Large Hadron Collider is currently being upgraded to operate at a stored beam energy of 680 MJ through the High Luminosity upgrade. The LHC performance is dependent on the functionality of beam collimation systems, essential for safe beam cleaning and machine protection. [...]
2018 - 15 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 031001
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Dynamic Response of Advanced Materials Impacted by Particle Beams: The MultiMat Experiment
/ Pasquali, M (CERN) ; Bertarelli, A (CERN) ; Accettura, C (CERN ; Milan Polytechnic) ; Berthome, E (CERN) ; Bianchi, L (CERN) ; Bolz, P (Darmstadt, GSI) ; Carra, F (CERN) ; Fichera, C (BIAM, St Paul lez Durance) ; Frankl, M I (CERN) ; Furness, T (Huddersfield U.) et al.
The introduction at CERN of new extremely energetic particle accelerators, such as the high-luminosity large hadron collider (HL-LHC) or the proposed future circular collider (FCC), will increase the energy stored in the circulating particle beams by almost a factor of two (from 360 to 680 MJ) and of more than 20 (up to 8500 MJ), respectively. In this scenario, it is paramount to assess the dynamic thermomechanical response of materials presently used, or being developed for future use, in beam intercepting devices (such as collimators, targets, dumps, absorbers, spoilers, windows, etc.) exposed to potentially destructive events caused by the impact of energetic particle beams. [...]
publ - 30 p.
- Published in : J. Dynamic Behavior Mater. 5 (2019) 266-295
External link: Fulltext from publisher
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High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility
/ Cauchi, Marija (CERN ; Malta U.) ; Aberle, O (CERN) ; Assmann, R W (CERN) ; Bertarelli, A (CERN) ; Carra, F (CERN) ; Cornelis, K (CERN) ; Dallocchio, A (CERN) ; Deboy, D (CERN) ; Lari, L (CERN) ; Redaelli, S (CERN) et al.
The correct functioning of a collimation system is crucial to safely operate highly energetic particle accelerators, such as the Large Hadron Collider (LHC). The requirements to handle high intensity beams can be demanding. [...]
2014 - 14 p.
- Published in : Phys. Rev. Spec. Top. Accel. Beams 17 (2014) 021004
APS Open Access article: PDF;
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