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Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD)
/ Rossi, Adriana (CERN) ; Accettura, Carlotta (CERN) ; Andreazza, William (CERN) ; Bollazzi, Alessio (CERN) ; Cenede, Jean (CERN) ; Chritin, Nicolas (CERN) ; Coutron, Yannick (CERN) ; Ferreira Somoza, Jose (CERN) ; Frassier, Alexandre (CERN) ; Gamba, Davide (CERN) et al.
A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. [...]
2024 - 6 p.
- Published in : JACoW COOL 2023 (2024) 5-10
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.5-10
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Status of Beam Instrumentation at the Electron Beam Test Stand at CERN
/ Sameed, Muhammed (CERN) ; Ady, Marton (CERN) ; Burger, Stephane (CERN) ; Cenede, Jean (CERN) ; Churchman, Ashley (CERN) ; Coiffet, Thibaut (CERN) ; Devauchelle, Wilfried (CERN) ; Forck, Peter (Darmstadt, GSI) ; Ganesh, Abhishek (CERN) ; Guillot-Vignot, Franck (CERN) et al.
An electron beam test stand has been designed and constructed at CERN as part of the High Luminosity LHC (HL-LHC) project, in collaboration with the ARIES project, to test components related to the Hollow Electron Lens (HL-LHC) and the GSI Space Charge Compensation Electron Lens (ARIES). This comprehensive test facility incorporates normal conducting solenoid magnets, including horizontal and vertical correctors, which generate fields of fractional Tesla magnitude. [...]
2024 - 6 p.
- Published in : JACoW COOL 2023 (2024) TUPAM2R1
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.TUPAM2R1
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Gas Jet-Based Fluorescence Profile Monitor for Low Energy Electrons and High Energy Protons at LHC
/ Sedláček, Ondrej (CERN ; U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Ady, Marton (CERN) ; Churchman, Ashley (CERN) ; Forck, Peter (Darmstadt, GSI) ; Mazzoni, Stefano (CERN) ; Rossi, Adriana (CERN) ; Sameed, Muhammed (CERN) ; Schneider, Gerhard (CERN) ; Sequeiro, Cristina (CERN) ; Sidorowski, Krystian (CERN) et al.
The ever-developing accelerator capabilities of increasing beam intensity, e.g. for High Luminosity LHC (HL-LHC), demand novel non-invasive beam diagnostics. [...]
2023 - 6 p.
- Published in : JACoW IBIC 2023 (2023) 312-317
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.312-317
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DC and pulsed electron beam test facility at CERN
/ Rossi, Adriana (CERN) ; Kolehmainen, Antti (CERN) ; Churchman, Ashley (CERN) ; Perini, Diego (CERN) ; Guillot-Vignot, Franck (CERN) ; Wenander, Fredrik (CERN) ; Zhang, Hao (Liverpool U.) ; Cenede, Jean (CERN) ; Wendt, Manfred (CERN) ; Toscan du Plantier, Maxime (CERN) et al.
An electron beam test stand was designed and constructed at CERN, under the umbrella of the Hi-Lumi project, to tests components for the Hollow Electron Lens (HEL), and in collaboration with the ARIES project for testing the Space Charge Compensation gun. The test facility features normal conductive magnets providing solenoid fields of the order of fractions of Tesla, beam diagnostics including screens (YAG, Cromox and OTR) for the full electron beam characterisation, a Faraday Cup collector to measure the total electron current, and a high voltage power supply up to 40 kV (with the possibility of biasing both gun and collector). [...]
2023
- Published in : JACoW IPAC 2023 (2023) TUPL104
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPL104
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Optical transition radiation measurements of a high intensity low energy hollow electron beam on electron beam test facility
/ Sedlacek, Ondrej (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Rossi, Adriana (CERN) ; Webber-Date, Alexander (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Churchman, Ashley (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Sequeiro, Cristina (CERN) ; Schneider, Gerhard (CERN) ; Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Sidorowski, Krystian (CERN) ; Ady, Marton (CERN) et al.
Optical Transition Radiation (OTR) is commonly used in imaging systems of highly relativistic charged particle beams as the light yield and collection efficiency increase with beam energy. For low beam energies, scintillating screens are typically preferred but they saturate or even get damaged when using a high beam current. [...]
2023
- Published in : JACoW IPAC 2023 (2023) THPA002
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA002
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Imaging a high-power hollow electron beam non-invasively with a gas-jet-based beam profile monitor
/ Zhang, H D (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Rossi, Adriana (CERN) ; Webber-Date, Alexander (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Churchman, Ashley (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Sequeiro, C Castro (CERN) ; Wenander, Fredrik (CERN) ; Schneider, Gerhard (CERN) ; Sidorowski, Krystian (CERN) ; Ady, Marton (CERN) et al.
The Hollow Electron Lens (HEL) was proposed to actively remove the beam halo of the proton beam for the HL-LHC upgrade. Currently, the concept of generating such an electron beam is being tested in a dedicated Electron Beam Test Stand (EBTS) at CERN. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL066
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL066
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Beam-beam long range compensator mechanical demonstrator
/ Sito, Leonardo (CERN ; Naples U.) ; Rossi, Adriana (CERN) ; Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN) ; Carra, Federico (CERN) ; Motschmann, Fritz (CERN) ; Sterbini, Guido (CERN) ; Guardia Valenzuela, J (CERN) ; Gentini, Luca (CERN) ; Garlaschè, Marco (CERN) et al.
Beam-Beam Long-Range Compensators employing current-carrying wires are considered as valuable options in hadron colliders to increase dynamic aperture at small crossing angles. This paper presents a simple design proposal for application at CERN LHC. [...]
2023 - 3 p.
- Published in : JACoW IPAC 2023 (2023) THPM015
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM015
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Optimisation of a gas jet-based beam profile monitor for high intensity electron beams
/ Stringer, Oliver (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Rossi, Adriana (CERN) ; Webber-Date, Alexander (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Churchman, Ashley (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Castro Sequeiro, C (CERN) ; Schneider, Gerhard (CERN) ; Zhang, Hao (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Sidorowski, Krystian (CERN) ; Ady, Marton (CERN) et al.
A beam profile monitor using gas jet technology is being designed and manufactured at the Cockcroft Institute for high intensity electron beams. It generates a thin, supersonic gas sheet that traverses the beam at a 45-degree orientation and measures the beam-induced fluorescence interactions to produce a 2D beam profile image. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL065
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL065
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Quench Protection of the HL-LHC Hollow Electron Lens Superconducting Solenoid Magnets
/ Wozniak, Mariusz (CERN) ; Foussat, Arnaud (CERN) ; Yammine, Samer (CERN) ; Steckert, Jens (CERN) ; Ravaioli, Emmanuele (CERN) ; Verweij, Arjan (CERN) ; Kolehmainen, Antti (CERN) ; Redaelli, Stefano (CERN) ; Rossi, Adriana (CERN)
The High-Luminosity LHC (HL-LHC) project is an upgrade of the Large Hadron Collider (LHC) and comprises the installation of two Hollow Electron Lens (HEL) systems, each acting on one beam on both sides of LHC Point 4. The systems aim for a controlled depletion of hadron beam tails and an enhanced hadron beam halo collimation. [...]
2022 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4701205
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4701205
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