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Simulated impact of the HL-LHC beam on a graphite target
/ Hjelle, Ingrid (CERN) ; Lechner, Anton (CERN ; Rome U.) ; Piccini, Audrey (CERN) ; Wiesner, Christoph (CERN) ; Wollmann, Daniel (CERN) ; Carra, Federico (CERN) ; Heron, John (CERN) ; Pasquali, Michele (CERN)
In the High Luminosity Large Hadron Collider (HL-LHC) era, the intensity of the circulating bunches will increase to 2.2e+11 protons per bunch, almost twice the nominal LHC value. Besides detailed studies of known and new failure cases for HL-LHC, it is also required to investigate failures beyond nominal design. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC18
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC18
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2.
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3.
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4.
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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
Fulltext: PDF;
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5.
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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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6.
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Collimation system studies for the FCC-hh
/ Bruce, Roderik (CERN) ; Abramov, Andrey (JAI, UK ; CERN) ; Bertarelli, Alessandro (CERN) ; Besana, Maria Ilaria (CERN) ; Carra, Federico (CERN) ; Cerutti, Francesco (CERN) ; Faus-Golfe, Angeles (Orsay, LAL) ; Fiascaris, Maria (CERN) ; Gobbi, Giorgia (CERN) ; Krainer, Alexander (CERN) et al.
The Future Circular Collider (FCC-hh) is being designed as a 100 km ring that should collide 50 TeV proton beams. At 8.3 GJ, its stored beam energy will be a factor 28 higher than what has been achieved in the Large Hadron Collider, which has the highest stored beam energy among the colliders built so far. [...]
CERN-ACC-2019-079.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPRB048
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB048
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7.
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Mechanical robustness of HL-LHC collimator designs
/ Carra, Federico (CERN) ; Bertarelli, Alessandro (CERN) ; Gobbi, Giorgia (CERN) ; Guardia-Valenzuela, Jorge (CERN ; U. Zaragoza (main)) ; Guinchard, Michael (CERN) ; Harden, Fiona (CERN) ; Pasquali, Michele (CERN) ; Redaelli, Stefano (CERN) ; Skordis, Eleftherios (CERN)
Two new absorbing materials were developed as collimator inserts to fulfil the requirements of HL-LHC higher brightness beams: molybdenum-carbide graphite (MoGr) and copper-diamond (CuCD). These materials were tested under intense beam impacts at CERN HiRadMat facility in 2015, when full jaw prototypes were irradiated. [...]
CERN-ACC-2019-162.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPTS091
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS091
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8.
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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
Fulltext: PDF;
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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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