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Optimization Study of Beam Position and Angular Jitter Independent Bunch Length Monitor for Awake Run 2
/ Davut, Can (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Apsimon, Oznur (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Karataev, Pavel (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Xia, Guoxing (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.)
In this paper, a study using the Polarization Current Approach (PCA) model is performed to optimize the design of a short bunch length monitor using two dielectric radiators that produce coherent Cherenkov Diffraction Radiation (ChDR). The electromagnetic power emitted from each radiator is measuring a different part of the bunch spectrum using Schottky diodes. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 465-468
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.465-468
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2.
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Analytical and Numerical Characterization of Cherenkov Diffraction Radiation as a Longitudinal Electron Bunch Profile Monitor for AWAKE Run 2
/ Davut, Can (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Apsimon, Oznur (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Karataev, Pavel (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Xia, Guoxing (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.)
In this paper, CST simulations of the coherent Cherenkov Diffraction Radiation with a range of parameters for different dielectric target materials and geometries are discussed and compared with the theoretical investigation of the Polarization Current Approach to design a prototype of a radiator for the bunch length/profile monitor for AWAKE Run 2. It was found that the result of PCA theory and CST simulation are consistent with each other regarding the shape of the emitted ChDR cone..
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4355-4358
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4355-4358
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3.
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Application of Nanostructures and Metamaterials in Accelerator Physics
/ Resta-López, Javier (GACE-ICMUV) ; Apsimon, Oznur (Liverpool U.) ; Bonatto, Alexandre (Rio Grande do Sul U.) ; Bonțoiu, Cristian (Liverpool U.) ; Galante, Bruno (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Xia, Guoxing (U. Manchester (main))
Carbon-based nanostructures and metamaterials offer extraordinary mechanical and opto-electrical properties, which make them suitable for applications in diverse fields, including, for example, bioscience, energy technology and quantum computing. In the latest years, important R&D; efforts have been made to investigate the potential use of graphene and carbon-nanotube (CNT) based structures to manipulate and accelerate particle beams. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 659-662
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.659-662
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4.
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S-band booster design and emittance preservation for the Awake $e^-$ injector
/ Mete Apsimon, Oznur (Lancaster U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Apsimon, Robert (Lancaster U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Burt, Graeme (Lancaster U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Döbert, Steffen (CERN) ; Xia, Guoxing (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.)
AWAKE is a proton driven plasma wakefield acceleration experiment at CERN which uses the protons from the SPS. It aims to study the self modulation instability of a proton bunch and the acceleration of an externally injected electron beam in the plasma wakefields, during the so called Phase II until the technical stop of LHC and its injector chain (LS2) in 2019. [...]
CERN-ACC-2017-353.-
2017 - 3 p.
- Published in : 10.18429/JACoW-LINAC2016-TUPRC016
Fulltext: PDF;
In : 28th Linear Accelerator Conference, East Lansing, Michigan, 25 - 30 Sep 2016, pp.TUPRC016
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5.
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Electron Beam Based Leather Tanning
/ Apsimon, Robert (Lancaster U. (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Dewhurst, Kay (Lancaster U. (main) ; Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Setiniyaz, Sadiq (Lancaster U. (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Seviour, Rebecca (Huddersfield U.) ; Turner, Daniel (Lancaster U. (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Wise, William (Unlisted, UK)
Tanning of leather for clothing, shoes, and handbags uses potentially harmful chemicals that often run off into local water supplies or require a large carbon footprint to safely recover these pollutants. In regions of the world with significant leather production, this can lead to a significant environmental impact. [...]
2022 - 5 p.
- Published in : JACoW LINAC 2022 (2022) 645-649
Fulltext: PDF;
In : 31st Linear Accelerator Conference (LINAC22), Liverpool, UK, 28 Aug - 2 Sep 2022, pp.645-649
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6.
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Secondary Emission Monitor Simulation, Measurements and Machine Learning Application Studies for CERN Fixed Target Beamlines
/ Parsons França, Luana (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Duraffourg, Michel (CERN) ; Kukstas, Egidijus (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Roncarolo, Federico (CERN) ; Velotti, Francesco (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main))
The CERN fixed target experimental areas have recently acquired new importance thanks to newly proposed experiments, such as those linked to Physics Beyond Colliders (PBC) activities. Secondary Emission Monitors (SEMs) are the instruments currently used for measuring beam current, position and size in these areas. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 476-480
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.476-480
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7.
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Experimental Verification of Several Theoretical Models for ChDR Description
/ Łasocha, Kacper (Jagiellonian U. (main)) ; Davut, Can (U. Manchester (main)) ; Karataev, Pavel (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Pakuza, Collette (Oxford U.) ; Schloegelhofer, Andreas (TU Vienna) ; Senes, Eugenio (CERN)
In recent years the potential of using Cherenkov Diffraction Radiation (ChDR) as a tool for non-invasive beam diagnostics has been thoroughly investigated. Although several theoretical models of ChDR have been developed, differences in their assumptions result in inconsistent predictions. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2420-2423
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2420-2423
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8.
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Optical Beam Loss Monitor for RF Cavity Characterisation
/ Alexandrova, Alexandra (Cockcroft Inst. Accel. Sci. Tech.) ; Brynes, Alexander (Daresbury) ; Devlin, Lee (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Effinger, Ewald (CERN) ; Holzer, Eva Barbara (CERN) ; Jackson, Frank (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Kastriotou, Maria (U. Liverpool (main) ; CERN) ; Scott, Duncan (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) et al.
Beam Loss Monitors (BLMs) based on optical fibres have been under development for many years as an alternative solution to commonly used methods, such as ionisation chambers. Optical BLMs (oBLMs) maintain standard BLM functionality but can also be used for machine and personal protection. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IBIC2017-WEPWC01
Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WEPWC01
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9.
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Amplitude enhancement of the self-modulated plasma wakefields
/ Li, Y. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Xia, G. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Lotov, K.V. (Novosibirsk, IYF ; Novosibirsk State U.) ; Sosedkin, A.P. (Novosibirsk, IYF ; Novosibirsk State U.) ; Zhao, Y. (Manchester U.) ; Gessner, S.J. (CERN)
Seeded Self-modulation (SSM) has been demonstrated to transform a long proton bunch into many equidistant micro-bunches (e.g., the AWAKE case), which then resonantly excite strong wakefields. However, the wakefields in a uniform plasma suffer from a quick amplitude drop after reaching the peak. [...]
arXiv:1805.03272; CERN-ACC-2018-182.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-TUPML023
Fulltext: tupml023 - PDF; 1805.03272 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPML023
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10.
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Modeling of an Electron Injector for the AWAKE Project
/ Mete, O. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Xia, G. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Apsimon, R. (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Burt, G. (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U.) ; Doebert, S. (CERN) ; Fiorito, R. (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, C. (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
Particle-in-cell simulations were performed by using PARMELA to characterise an electron injector with a booster linac for the AWAKE project in order to provide the baseline specifications required by the plasma wakefield experiments. Tolerances and errors were investigated. [...]
arXiv:1505.02621; IPAC-2015-TUPJE059; CERN-ACC-2015-374.-
2015-06 - 3 p.
- Published in : 10.18429/JACoW-IPAC2015-TUPJE059
Fulltext: tupje059 - PDF; arXiv:1505.02621 - PDF; External link: Full-text at JACoW Server
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.TUPJE059
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