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Slow Extraction Techniques from Fixed Field Accelerators
/ Taylor, R (Imperial Coll., London ; CERN) ; Steinberg, A F (Manchester U. ; Melbourne U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Pasternak, J (Imperial Coll., London) ; Appleby, R B (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Sheehy, S L (Melbourne U. ; ANSTO, Menai) ; Benedetto, E (Unlisted, CH ; CERN)
Fixed Field Accelerators are a candidate for future hadron cancer therapy facilities as their high repetition rate and large energy acceptance enables novel treatment modalities such as high dose rate FLASH. However, conventional dose delivery mechanisms are still necessary, requiring continuous beam delivery over 1--30s. [...]
2023
- Published in : JACoW IPAC 2023 (2023) MOPL176
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL176
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3.
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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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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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Creating Exact Multipolar Fields in Accelerating RF Cavities via an Azimuthally Modulated Design
/ Wroe, Laurence M (JAI, UK) ; Apsimon, Robert J (Cockcroft Inst. Accel. Sci. Tech.) ; Dosanjh, Manjit (JAI, UK ; CERN) ; Sheehy, Suzanne L (JAI, UK ; Melbourne U.)
In this paper, we present a novel method for designing RF structures with specifically tailored multipolar field contributions. This has a range of applications, including the suppression of unwanted multipolar fields or the introduction of wanted terms, such as for quadrupole focusing. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1154-1157
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1154-1157
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Development of an High Gradient Side Coupled Cavity for PROBE
/ Pitman, Sam (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Apsimon, Robert (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech. ; Lancaster U. (main)) ; Catalán Lasheras, Nuria (CERN) ; Grudiev, Alexej (CERN) ; Owen, Hywel (Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Wuensch, Walter (CERN)
The PROBE project aims to develop a high gradient proton accelerator for protons with energy around 250-350 MeV for proton radiography. Detailed studies have shown that the optimum design is a side coupled cavity at S-band. [...]
CERN-ACC-2018-199.-
2018 - 4 p.
- Published in : 10.18429/JACoW-LINAC2018-THPO108
Fulltext: PDF;
In : 29th International Linear Accelerator Conference, Beijing, China, 16 - 21 Sep 2018, pp.THPO108
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7.
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Development of a Supersonic Gas-jet Monitor to Measure Beam Profile Non-destructively
/ Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Jeff, Adam (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Tzoganis, Vasilis (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main) ; Nishina Ctr., RIKEN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main))
The measurement of the transverse beam profile is a great challenge for high intensity, high brightness and high power particle beams due to their destructive power. Current non-destructive methods such as residual gas monitors and beam induced fluorescence monitors either require a rather long integration time or residual gas pressures in the order of 10⁻⁷ mbar to make meaningful measurements. [...]
CERN-ACC-2015-301.-
2016 - 3 p.
- Published in : (2016) , pp. MOPWI006
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPWI006
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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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Non-Invasive Beam Monitoring Using LHCb VELO With 40 MeV Protons
/ Schnuerer, Roland (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Price, Tony (Birmingham U.) ; Szumlak, Tomasz (AGH-UST, Cracow) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Yap, Jacinta (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main))
In proton beam therapy, knowledge of the detailed beam properties is essential to ensure effective dose delivery to the patient. In clinical practice, currently used interceptive ionisation chambers require daily calibration and suffer from slow response time. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-THPMP043
Fulltext: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPMP043
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MERLIN Simulations of the LHC Collimation System with 6.5 TeV Beams
/ Valloni, Alessandra (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Appleby, Robert (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Bruce, Roderik (CERN) ; Mereghetti, Alessio (CERN) ; Molson, James (Orsay, LAL) ; Rafique, Haroon (Huddersfield U. ; Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Redaelli, Stefano (CERN) ; Tygier, Sam (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.)
The accelerator physics code MERLIN has been extended in many areas to make detailed studies of the LHC collima- tion system and calculate loss maps from beam halo losses. Large scale tracking simulations have been produced for the 2015 run configuration at 6.5 TeV. [...]
CERN-ACC-2016-213.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-WEPMW037
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPMW037
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