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Determination of the Phase-Space Stability Border with Machine Learning Techniques
/ Van der Veken, Frederik (CERN) ; Akbari, Runa (CERN) ; Bogaert, Michiel (CERN) ; Fol, Elena (CERN) ; Giovannozzi, Massimo (CERN) ; Lowyck, Amy (CERN) ; Montanari, Carlo Emilio (CERN) ; Van Goethem, Wietse (CERN)
The dynamic aperture (DA) of a hadron accelerator is represented by the volume in phase space that exhibits bounded motion, where we disregard any disconnected parts that could be due to stable islands. To estimate DA in numerical simulations, it is customary to sample a set of initial conditions using a polar grid in the transverse planes, featuring a limited number of angles and using evenly distributed radial amplitudes. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 183-186
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.183-186
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Beam Intensity Monitoring with nA Resolution - the Cryogenic Current Comparator (CCC)
/ Haider, David (Darmstadt, GSI) ; De Gersem, Herbert (Darmstadt, Tech. Hochsch.) ; Fernandes, Miguel (CERN) ; Forck, Peter (Darmstadt, GSI) ; Golm, Jessica (Unlisted, DE) ; Kurian, Febin (Darmstadt, GSI) ; Marsic, Nicolas (Darmstadt, Tech. Hochsch.) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (Unlisted, DE) ; Schwickert, Marcus (Darmstadt, GSI) et al.
The storage of low current beams as well as the long extraction times from the synchrotrons at FAIR require non-destructive beam intensity monitoring with a current resolution of nanoampere. To fulfill this requirement, the concept of the Cryogenic Current Comparator (CCC), based on the low temperature SQUID, is used to obtain an extremely sensitive beam current transformer. [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-MOPC08
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.MOPC08
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Electron Cooling Simulation Benchmarking
/ Veglia, Bianca (Cockcroft Inst. Accel. Sci. Tech.) ; Biancacci, Nicolo (CERN) ; Gamba, Davide (CERN) ; Latina, Andrea (CERN) ; Resta-López, Javier (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Saá Hernández, Angela (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
Electron coolers are commonly used in storage rings to reduce the phase space volume of heavy particles such as protons, antiprotons and ions. Their effect depends on the Coulomb interactions between the circulating beam and the cold electrons at small relative velocities. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-COOL2019-TUPS06
Fulltext: PDF;
In : International Workshop on Beam Cooling and Related Topics, Novosibirsk, Russian Federation, September 23 - 27, 2019, pp.TUPS06
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Measurements of the GSI transfer beam lines ion optics
/ Sapinski, Mariusz (Darmstadt, GSI) ; Geithner, Oksana (Darmstadt, GSI) ; Heßler, Christoph (CERN) ; Reimann, Stephan (Darmstadt, GSI) ; Schütt, Petra (Darmstadt, GSI) ; Vossberg, Markus (Darmstadt, GSI) ; Walasek-Höhne, Beata (Darmstadt, GSI)
GSI High Energy Beam Transfer lines (HEST) link the SIS18 synchrotron with two storage rings (Experimental Storage Ring and Cryring) and six experimental caves. The recent upgrades to HEST beam instrumentation enables precise measurements of beam properties along the lines and allow for faster and more precise beams setup on targets. [...]
CERN-ACC-2019-134.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPGW024
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPGW024
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Beam-based measurements on two ±12.5 kV inductive adders, together with striplines, for CLIC damping ring extraction kickers
/ Holma, Janne (CERN ; CELLS - ALBA, LLS) ; Barnes, Michael (CERN) ; Carlà, Michele (CERN) ; Catalán Lasheras, Nuria (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Martí, Zeus (CELLS - ALBA, LLS) ; Papaphilippou, Yannis (CERN) ; Pérez, Francis (CELLS - ALBA, LLS) ; Pont, Montserrat (CELLS - ALBA, LLS)
The CLIC study is investigating the technical feasibility of an electron-positron linear collider with high luminosity and a nominal centre-of-mass energy of 3 TeV. Pre-damping rings and damping rings (DRs) will produce ultra-low emittance beam with high bunch charge. [...]
CERN-ACC-2019-250; CLIC-Note-1194.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THPRB071
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPRB071
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The Stripline Kicker Prototype for the CLIC Damping Rings at ALBA: Installation, Commissioning and Beam Characterisation
/ Pont, Montserrat (CELLS - ALBA, LLS) ; Ayala, Nuria (CELLS - ALBA, LLS) ; Barnes, Michael (CERN) ; Belver-Aguilar, Carolina (CERN) ; Carlà, Michele (CELLS - ALBA, LLS) ; Günzel, Thomas (CELLS - ALBA, LLS) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Martí, Zeus (CELLS - ALBA, LLS) ; Monge, Raquel (CELLS - ALBA, LLS) ; Olmos, Angel (CELLS - ALBA, LLS) et al.
The extraction system for the CLIC Damping Rings has very tight specifications. Therefore a full characterisation of the behaviour of the stripline kicker under conditions as close as possible to the expected working conditions will be very valuable. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMF013
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMF013
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