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Noninvasive 3D field mapping of complex static electric fields
/ Kainz, Andreas (TU Vienna) ; Keplinger, Franz (TU Vienna) ; Hortschitz, Wilfried (Danube U., Krems) ; Kahr, Matthias (Danube U., Krems) ; Steiner, Harald (Danube U., Krems) ; Stifter, Michael (Danube U., Krems) ; Hunt, James R (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Resta-Lopez, Javier (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Rodin, Volodymyr (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Welsch, Carsten P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) et al.
Many upcoming experiments in antimatter research require low-energy antiproton beams. With a kinetic energy in the order of 100 keV, the standard magnetic components to control and focus the beams become less effective. [...]
2019 - 6 p.
- Published in : Phys. Rev. Lett. 122 (2019) 244801
Fulltext from publisher: PDF;
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A gas curtain beam profile monitor using beam induced fluorescence for high intensity charged particle beams
/ Salehilashkajani, A (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Zhang, H D (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Ady, M (CERN) ; Chritin, N (CERN) ; Forck, P (Darmstadt, GSI) ; Glutting, J (CERN) ; Jones, O R (CERN) ; Kersevan, R (CERN) ; Kumar, N (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Lefevre, T (CERN) et al.
A minimally invasive transverse beam profile monitor based on supersonic gas curtain technology and beam-induced fluorescence has been developed and demonstrated. The concept presented can be used to measure both the profile of the proton beam in the Large Hadron Collider (LHC) and the concentricity of the electron and the proton beams in the LHC hollow electron lens. [...]
2022 - 7 p.
- Published in : Appl. Phys. Lett. 120 (2022) 174101
Fulltext: PDF;
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3.
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Beam diagnostics for low energy antiprotons
/ Welsch, Carsten P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Alexandrova, Alexandra (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Fernandes, Miguel (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; CERN) ; Harasimowicz, Janusz (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Hunt, James (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Jeff, Adam (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; CERN) ; Putignano, Massimiliano (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Resta-Lopez, Javier (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Sosa, Alejandro (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; CERN) ; Tzoganis, Vasilis (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) et al.
Advanced beam diagnostics for antiproton beams at keV beam energies are very important for the successful operation and continuous optimization of low energy storage rings and associated beam lines to the experiments. Manifold challenges arise from the low energy and intensity of the beam, its pulse structure and low repetition rate. [...]
2017 - 6 p.
- Published in : JPS Conf. Proc. 18 (2017) 011041
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011041
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4.
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RF Cavity Induced Sensitivity Limitations on Beam Loss Monitors
/ Kastriotou, M (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Degiovanni, A (CERN) ; Sousa, F S Domingues (CERN) ; Effinger, E (CERN) ; Holzer, E B (CERN) ; Quirante, J L Navarro (CERN) ; del Busto, E N (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Tecker, F (CERN) ; Viganò, W (CERN) ; Welsch, C P (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) et al.
Due to the secondary showers generated when a particle hits the vacuum chamber, beam losses at an accelerator may be detected via radiation detectors located near the beam line. Several sources of background can limit the sensitivity and reduce the dynamic range of a Beam Loss Monitor (BLM). [...]
2015 - 8 p.
- Published in : Phys. Procedia 77 (2015) 21-28
Elsevier Open Access article: PDF;
In : International Conference on Laser Applications at Accelerators, Mallorca, Spain, 25 - 27 Mar 2015, pp.21-28
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5.
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Mean transverse energy, surface chemical and physical characterization of CERN-made Cs-Te photocathodes
/ Jones, L B (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Panuganti, H (CERN) ; Benjamin, C (Daresbury ; Warwick U.) ; Chevallay, E (CERN) ; Churn, H M (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Fedosseev, V (CERN) ; Noakes, T C Q (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Soomary, L A J (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Welsch, C P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
Cesium telluride photocathodes are known to offer high quantum efficiencies under UV illumination combined with good lifetimes compared to other semiconductor photocathodes, making them very popular electron sources for particle accelerator applications. The development of photocathode preparation, characterization, and related expertise at a single accelerator laboratory can be challenging, expensive, and time consuming. [...]
2024 - 18 p.
- Published in : Phys. Rev. Accel. Beams 27 (2024) 023402
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TALOS (Total Automation of LabVIEW Operations for Science): A framework for autonomous control systems for complex experiments
/ Volponi, M. (CERN ; Trento U. ; INFN, Trento) ; Zielinski, J. (Warsaw U. of Tech.) ; Rauschendorfer, T. (CERN ; Leipzig U.) ; Huck, S. (CERN ; Hamburg U.) ; Caravita, R. (Trento U. ; INFN, Trento) ; Auzins, M. (CERN ; Latvia U.) ; Bergmann, B. (Prague, Tech. U.) ; Burian, P. (Prague, Tech. U.) ; Brusa, R.S. (Trento U. ; INFN, Trento) ; Camper, A. (Oslo U.) et al.
Modern physics experiments are frequently very complex, relying on multiple simultaneous events to happen in order to obtain the desired result. The experiment control system plays a central role in orchestrating the measurement setup: However, its development is often treated as secondary with respect to the hardware, its importance becoming evident only during the operational phase. [...]
arXiv:2409.01058.-
2024-08-01 - 22 p.
- Published in : Rev. Sci. Instrum. 95 (2024) 085116
Fulltext: 2409.01058 - PDF; Publication - PDF;
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3D Tracking Methods in a GEANT4 Environment Through Electrostatic Beamlines
/ Hunt, James (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Resta-López, Javier (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Rodin, Volodymyr (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Veglia, Bianca (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
Due to the relatively infrequent use of electrostatic beamline elements compared with their magnetic counterparts, there are few particle tracking codes which allow for the straightforward implementation of such beamlines. In this contribution, we present 3D tracking methods for beamlines containing electrostatic elements utilising a modified version of the Geant4 based tracking code 'G4beamline'. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAF016
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF016
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