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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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2.
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Recent Progress on the Commissioning of a Gas Curtain Beam Profile Monitor Using Beam Induced Fluorescence for High Luminosity LHC
/ Mazzoni, Stefano (CERN) ; Ady, Marton (CERN) ; Forck, Peter (Darmstadt, GSI) ; Jones, Owain Rhodri (CERN) ; Kumar, Narender (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Papazoglou, Ioannis (CERN) ; Pasquino, Chiara (CERN) ; Rossi, Adriana (CERN) ; Sadovich, Sergey (CERN) ; Salehilashkajani, Amir (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) et al.
For the high-luminosity upgrade of the Large Hadron Collider, active control of proton/ion beam halo will be essential for safe and reliable operation. Hollow Electron Lenses can provide such active control by enhancing the depletion of halo particles, and are now an integral part of the high luminosity LHC collimation system [...]
2020 - 5 p.
- Published in : 10.18429/JACoW-IBIC2020-WEPP36
Fulltext: PDF;
In : 9th International Beam Instrumentation Conference, Online, 14 - 18 Sep 2020, pp.WEPP36
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3.
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Non-invasive Beam Profile Monitoring
/ Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Cybulski, Tomasz (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Jeff, Adam (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech. ; RIKEN (main)) ; Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main))
State-of-the-art high energy and high intensity accelerators require new approaches to transverse beam profile monitoring as many established techniques will no longer work due to the high power stored in the beam. In addition, many accelerator applications such as ion beam cancer therapy or material irradiation would benefit significantly from the availability of non-invasive beam profile monitors. [...]
CERN-ACC-2015-314.-
2015 - 3 p.
- Published in : (2015) , pp. MOPMA005
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPMA005
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Characterizing Supersonic Gas Jet-based Beam Profile Monitors
/ Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Alexandrova, Alexandra (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 next generation of high power, high intensity accelerators requires non-invasive diagnostics, particularly beam profile monitors. Residual gas-based diagnostics such as ionization beam profile or beam induced fluorescence monitors have been used to replace commonly used scintillating screens. [...]
CERN-ACC-2016-307.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-MOPMR046
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.MOPMR046
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5.
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A Supersonic Gas-Jet Based Beam Induced Fluorescence Prototype Monitor for Transverse Profile Determination
/ Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Barrios Diaz, Elena (CERN) ; Chritin, Nicolas (CERN) ; Forck, Peter (Darmstadt, GSI ; AEG Forschungsinst., Frankfurt) ; Jones, Owain Rhodri (CERN) ; Martin, Edward (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Schneider, Gerhard (CERN) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Udrea, Serban (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Veness, Raymond (CERN) et al.
Supersonic gas jets have been used in transverse beam profile monitoring as Ionization Profile Monitors (IPMs) and Beam Induced Fluorescence (BIF) monitors. The former method images ions generated by the projectile beam, whilst the latter is based on the detection of photons. [...]
CERN-ACC-2017-278.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPAB139
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPAB139
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HL-LHC Beam Gas Fluorescence Studies for Transverse Profile Measurement
/ Sedláček, Ondrej (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Ady, Marton (CERN) ; Castro Sequeiro, Cristina (CERN) ; Churchman, Ashley (CERN) ; Forck, Peter (Darmstadt, GSI) ; Mazzoni, Stefano (CERN) ; Sameed, Muhammed (CERN) ; Schneider, Gerhard (CERN) ; Sidorowski, Krystian (CERN) ; Stringer, Oliver (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) et al.
In a gas jet monitor, a supersonic gas curtain is injected into the beam pipe and interacts with the charged particle beam. The monitor exploits fluorescence induced by beam-gas interactions, thus providing a minimally invasive transverse profile measurement. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 261-264
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.261-264
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7.
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A Supersonic Gas Jet-Based Beam Profile Monitor Using Fluorescence for HL-LHC
/ Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Ady, Marton (CERN) ; Alexandrova, Alexandra (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Barrios Diaz, Elena (CERN) ; Chritin, Nicolas (CERN) ; Forck, Peter (Darmstadt, GSI) ; Jones, Owain Rhodri (CERN) ; Kersevan, Roberto (CERN) ; Marriott-Dodington, Thomas (CERN) ; Mazzoni, Stefano (CERN) et al.
The High-Luminosity Large Hadron Collider (HL-LHC) project aims to increase the machine luminosity by a factor of 10 as compared to the LHC's design value. To achieve this goal, a special type of electron lens is being developed. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAF034
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF034
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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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Emittance evolution of low energy antiproton beams in the presence of deceleration and cooling
/ Hunt, James (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Carli, Christian (CERN) ; Dupuy, Bruno (CERN) ; Gamba, Davide (CERN) ; Resta-López, Javier (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
The commissioning of the Extra Low Energy Antiproton (ELENA) [1] ring was completed before the start of the second long shutdown (LS2) at CERN. First beams to an experiment in a new experimental zone have also already been delivered. [...]
CERN-ACC-2019-202.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW090
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW090
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10.
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Beam Tracking Studies of Electron Cooling in ELENA
/ Veglia, Bianca (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Hunt, James (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Resta-López, Javier (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Rodin, Volodymyr (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
The Extra Low ENergy Antiproton storage ring (ELENA), which is currently being commissioned at CERN, will further decelerate antiprotons extracted from the Antiproton Decelerator (AD) from 5.3 MeV to energies as low as 100 keV. It will provide high quality beams for the antimatter experiments located within the AD hall. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAF015
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF015
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