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1.
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Channeling performance of bent crystals developed at CERN
/ Rodin, Volodymyr (CERN) ; Esposito, Luigi Salvatore (CERN) ; Lechner, Anton (CERN) ; Demassieux, Quentin (CERN) ; Matheson, Eloise (CERN) ; Solis Paiva, Santiago (CERN) ; Seidenbinder, Regis (CERN) ; Aberle, Oliver (CERN) ; Perillo Marcone, Antonio (CERN) ; Calviani, Marco (CERN) et al.
Bent crystals are a mature technology used in several applications at CERN, such as the crystal-assisted collimation system for LHC ion operation and reduction of losses during the slow extraction from the SPS by shadowing the electrostatic septum. In the future, it is planned to measure electric and magnetic dipole moments of short-lived particles with a double-crystal experiment in the LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPS39
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPS39
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2.
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Enhancing CERN-SPS slow extraction efficiency: meta Bayesian optimisation in crystal shadowing
/ Velotti, Francesco (CERN) ; Matheson, Eloise (CERN) ; Esposito, Luigi Salvatore (CERN) ; Fraser, Matthew (CERN) ; Solis Paiva, Santiago (CERN) ; Kain, Verena (CERN)
The Super Proton Synchrotron at CERN serves the fixed-target experiments of the North Area, providing protons and ions via slow extraction, and employs the crystal shadowing technique to significantly minimize losses. Over the past three operational years, the use of a crystal, positioned upstream of the electrostatic septum to shadow its blade, has allowed to achieve a 25% reduction in losses. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPS65
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPS65
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3.
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Characterization of bent crystals for beam collimation with 6.8 TeV proton beams at the LHC
/ D'Andrea, Marco (CERN) ; Aberle, Oliver (CERN) ; Abramov, Andrey (CERN) ; Bandiera, Laura (INFN, Ferrara) ; Bruce, Roderik (CERN) ; Cai, Rongrong (CERN ; EPFL-ISIC, Lausanne) ; Calviani, Marco (CERN) ; Demassieux, Quentin (CERN) ; Dewhurst, Kay Alana (CERN) ; Di Castro, Mario (CERN) et al.
The concept of crystal collimation exploits the peculiar properties of crystalline materials to deflect high-energy beam particles at angles orders of magnitude larger than what can be achieved with scattering by conventional materials used as primary collimators. This innovative technique is planned to be used to improve the collimation efficiency with heavy-ion beams at the Large Hadron Collider (LHC) and its High-Luminosity upgrade (HL-LHC). [...]
2023 - 8 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1060 (2024) 169062
Publication: PDF;
In : 9th International Conference on Charged & Neutral Particles Channeling Phenomena (Channeling 2023), Riccione, Italy, 4 - 9 June 2023, pp.169062
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4.
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LHC crystal collimation tests with 6.8 Z TeV Pb beams
/ Cai, R (CERN ; Ecole Polytechnique, Lausanne) ; Aberle, O (CERN) ; Bruce, R (CERN) ; Calviani, M (CERN) ; D'Andrea, M (CERN) ; Demassieux, Q (CERN) ; Dewhurst, K (CERN) ; Di Castro, M (CERN) ; Esposito, L S (CERN) ; Gilardoni, S (CERN) et al.
In the next heavy ion runs at the LHC, the cleaning of the beam halo will rely on crystal collimation. A test system installed in the collimation cleaning insertion is being upgraded for the operational challenges of the ion runs. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) TUPM120
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPM120
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5.
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Development of bent crystal manipulation systems for beam collimation and extraction at CERN
/ Demassieux, Q (CERN) ; Seidenbinder, R (CERN) ; Calviani, M (CERN) ; Aberle, O (CERN) ; Salvant, B (CERN) ; Mirachi, D (CERN) ; Antuono, C (CERN) ; Matheson, E (CERN) ; Fraser, M (CERN) ; Hermes, P (CERN) et al.
Manipulating high energy beams with bent crystals has applications ranging from beam collimation to slow or direct beam extraction. These systems are now integrated parts of accelerators and studied for future experimental set-ups.With growing achievements and expectations of crystal beam manipulation, requirements for the devices that operate the crystals become more stringent. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPA085
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA085
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6.
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Crystal collimation performance at the LHC with a 6.8 TeV proton beam
/ D'Andrea, M (CERN) ; Aberle, O (CERN) ; Abramov, A (CERN) ; Bruce, R (CERN) ; Cai, R (CERN ; Ecole Polytechnique, Lausanne) ; Calviani, M (CERN) ; Demassieux, Q (CERN) ; Dewhurst, K A (CERN) ; Di Castro, M (CERN) ; Esposito, L S (CERN) et al.
Crystal collimation is studied to improve the collimation efficiency with ion beams at the High-Luminosity Large Hadron Collider (HL-LHC). Bent crystals are used instead of conventional primary collimators to deflect high-energy halo particles at angles orders of magnitude larger than what can be achieved with scattering by conventional materials. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL023
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL023
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7.
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An Inertial Uni-Axial Interferometer-Based Accelerometer for Harsh Environments
/ Aliana Cervera, Gerard (CERN ; Ecole Polytechnique, Lausanne) ; Solis Paiva, Santiago Andres (CERN) ; Serrano Galvez, Pablo (CERN) ; Sola Merino, Jorge (CERN) ; Butcher, Mark (CERN) ; Matheson, Eloise (CERN) ; di Castro, Mario (CERN)
For high-impact devices, subsequent vibrations
have as much influence on the deterioration of the mechanical
structure as the impact itself. To mitigate the consequences
of both impacts and resulting vibrations, it is crucial to
accurately understand the peak acceleration and vibration
frequencies that originate in the structure. [...]
2022 - 10 p.
- Published in : IEEE Sensors J. 22 (2022) 21540-21549
Fulltext: PDF;
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9.
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Fulltext
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10.
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The CERN n_TOF facility data acquisition system
/ Masi, Alessandro (CERN) ; Almeida Paiva, Ana Sofia (CERN) ; Cevenini, Roberto (CERN) ; Chiaveri, Enrico (CERN) ; Donzé, Mathieu (CERN) ; Gilardoni, Simone (CERN) ; Giraud, Alexandre (CERN) ; Hernandez Prieto, Alvaro (CERN) ; Losito, Roberto (CERN) ; Macina, Daniela (CERN) et al.
n_TOF is a pulsed neutron facility at CERN which studies neutron interactions as function of the energy. Neutrons are produced by a pulsed proton beam from the PS directed to a lead target. [...]
2018 - 6 p.
- Published in : 10.18429/JACoW-ICALEPCS2017-THPHA195
Fulltext: PDF;
In : International Conference on Accelerator and Large Experimental Physics Control Systems, Barcelona, Spain, 8 - 13 Oct 2017, pp.THPHA195
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