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Analysis of centroiding algorithms for non-diffracting structured and hollow structured laser beams
/ Dusek, Martin (CERN ; Liberec Tech. U.) ; Roikova, Eva (CERN ; Liberec Tech. U.) ; Mergelkuhl, Dirk ; Gayde, Jean-Christophe (CERN) ; Polak, Krystof (CERN) ; Polak, Krystof (Liberec Tech. U.) ; Sulc, Miroslav (Liberec Tech. U.) ; Sulc, Miroslav (Prague, Inst. Plasma Phys.)
This paper explores the potential of optical-based systems, specifically pseudo-non-diffractive beams, as an alternative for alignment. The study focuses on structured laser beams and hollow structured laser beams, which exhibit lower divergence and enhanced detection capabilities. [...]
2023 - 12 p.
- Published in : Appl. Opt. 63 (2024) 263-274
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Variation of structured laser beam pattern and optimization for an alignment reference line creation
/ Niewiem, Witold (Zurich, ETH) ; Niewiem, Witold (CERN) ; Polak, Krystof (CERN) ; Polak, Krystof (Liberec Tech. U.) ; Dusek, Martin (CERN) ; Dusek, Martin (Liberec Tech. U.) ; Mergelkuhl, Dirk (CERN) ; Gayde, Jean-Christophe (CERN) ; Wieser, Andreas (Zurich, ETH) ; Sulc, Miroslav (Liberec Tech. U.) et al.
The alignment of particle accelerators demands a dedicated measurement system based on a straight-line reference. This straight line can be provided by a laser beam. [...]
2023 - 16 p.
- Published in : Opt. Express 31 (2023) 43307-43322
Fulltext: PDF;
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The potential contribution of a structured laser beam to accelerator alignment technology
/ Gayde, Jean-Christophe (CERN) ; Dusek, Martin (CERN ; Liberec Tech. U.) ; Mergelkuhl, Dirk (CERN) ; Niewiem, Witold (CERN ; Zurich, ETH) ; Polak, Krystof (CERN ; Liberec Tech. U.) ; Roiková, Eva (Liberec Tech. U.) ; Sulc, Miroslav (Liberec Tech. U. ; Prague, Inst. Plasma Phys.)
The Structured Laser Beam (SLB) is a type of optical beam characterized by an intense, sharply defined, low divergence core at its center, similar in its transverse intensity distribution to a Bessel beam. The SLB can propagate over a theoretically infinite distance, and has recently been tested up to a distance of 900 m. [...]
2023
- Published in : JACoW IPAC 2023 (2023) THPA041
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA041
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Alignment and Monitoring Systems for Accelerators and Experiments Based on BCAM - First Results and Benefits of Systems Developed for ATLAS, LHCb and HIE-ISOLDE
/ Gayde, Jean-Christophe (CERN) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Di Girolamo, Beniamino (CERN) ; Kadi, Yacine (CERN) ; Kautzmann, Guillaume (CERN) ; Klumb, Francis (CERN) ; Lindner, Rolf (CERN) ; Mergelkuhl, Dirk (CERN) ; Pontecorvo, Ludovico (CERN) ; Raymond, Michel (CERN) et al.
In the last few years alignment and monitoring systems based on BCAM* cameras active sensors, or their HBCAM evolution, have been developed at the request of the Technical Coordination of LHC experiments and HIE-ISOLDE facility Project Leader. ADEPO (ATLAS DEtector POsition) has been designed to speed up the precise closure - 0.3 mm - of large detector parts representing in total ~2500 tons. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAF067
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF067
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Assembling experience of the first two HIE-ISOLDE cryomodules
/ Therasse, Mathieu (CERN) ; Barlow, Graeme (CERN) ; Bizzaglia, Sauro (CERN) ; Capatina, Ofelia (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Intitek, Lyon, France) ; Deschamps, Jean-Baptiste (CERN) ; Gayde, Jean-Christophe (CERN) ; Gourragne, Max (CERN) et al.
The assembly of the first two cryomodules (CM1 and CM2) of the new superconducting linear accelerator HIE-ISOLDE (High Intensity and Energy ISOLDE), located downstream of the REX-ISOLDE normal conducting accelerator, started one year and half ago. After a delicate assembly phase in the cleanroom which lasted nine months, the first cryomodule was transported to the ISOLDE hall on 2 May 2015 and coupled to the existing REX-ISOLDE accelerator, increasing the energy of the radioactive ion beams from 2.8 to 4.3 MeV per nucleon. [...]
CERN-ACC-2017-347.-
2017 - 3 p.
- Published in : 10.18429/JACoW-LINAC2016-THPRC016
Fulltext: PDF;
In : 28th Linear Accelerator Conference, East Lansing, Michigan, 25 - 30 Sep 2016, pp.THPRC016
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First HIE-ISOLDE cryo-module assembly at CERN
/ Therasse, Mathieu (CERN) ; Barlow, Graeme (CERN) ; Bizzaglia, Sauro (CERN) ; Bousquet, Jean-Alexandre (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Unlisted, FR) ; Deschamps, Jean-Baptiste (CERN) ; Ferreira Somoza, Jose (CERN) ; Gayde, Jean-Christophe (CERN) et al.
The first phase of the HIE-ISOLDE project aims to increase the energy of the existing REX ISOLDE facilities from 3MeV/m to 5MeV/m. It involves the assembly of two superconducting cryo-modules based on quarter wave resonators made by niobium sputtered on copper. [...]
2015 - 5 p.
- Published in : 10.18429/JACoW-SRF2015-TUPB106
Fulltext: PDF;
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.TUPB106
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10.
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The Assembly Experience of the First Cryo-module for HIE-ISOLDE at CERN
/ Leclercq, Yann (CERN) ; Barlow, Graeme (CERN) ; Bousquet, Jean-Alexandre (CERN) ; Chrul, Anna (CERN) ; Demarest, Paul (CERN) ; Dequaire, Julien (Intitek, Lyon) ; Deschamps, Jean-Baptiste (CERN) ; Ferreira Somoza, Jose (CERN) ; Gayde, Jean-Christophe (CERN) ; Gourragne, Max (CERN) et al.
The HIE ISOLDE project aims at increasing the energy of the radioactive ion beams of the existing REX ISOLDE facility from the present 3 MeV/u up to 10 MeV/u for A/q to 4.5. The upgrade includes the installation of a superconducting linac in successive phases, for a final layout containing two low-β and four high-β cryo-modules. [...]
CERN-ACC-2015-236.-
2015 - 3 p.
- Published in : (2015) , pp. WEPHA013
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPHA013
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