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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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2.
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Energy deposition and radiation level studies for the FCC-ee experimental insertions
/ Frasca, Alessandro (CERN ; Liverpool U.) ; Ciarma, Andrea (Frascati) ; Lechner, Anton (CERN) ; Perillo Marcone, Antonio (CERN) ; Humann, Barbara (CERN) ; Järmyr Eriksson, Carl (CERN) ; Welsch, Carsten (Liverpool U.) ; Calzolari, Daniele (CERN) ; Lerner, Giuseppe (CERN) ; Boscolo, Manuela (Frascati) et al.
The Future Circular Collider (FCC) study foresees the construction of a 90.7 km underground ring where, as a first stage, a high-luminosity electron-positron collider (FCC-ee) is envisaged, operating at beam energies from 45.6 GeV (Z pole) to 182.5 GeV (ttbar). In the FCC-ee experimental interaction regions, various physical processes give rise to particle showers that can be detrimental to machine components as well as equipment in the tunnel, such as cables and electronics. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC66
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC66
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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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4.
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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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5.
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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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6.
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Absolute calibration of BSI monitors in the SPS North Area at CERN
/ Parsons França, Luana (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Ahdida, Claudia (CERN) ; Ravotti, Federico (CERN) ; Roncarolo, Federico (CERN) ; Philippon, Florent (CERN) ; Pezzullo, Giuseppe (CERN) ; Zhang, H D (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Bernhard, Johannes (CERN) ; Van Dijk, Maarten (CERN) et al.
Developments in current and future experiments in the SPS North Area (NA) and PS East Area (EA) fixed target beam lines at CERN, including the “Physics Beyond Colliders” (PBC) program, require accurate determination of the number of protons on target (POT). The re-calibration of Beam Secondary Emission Intensity monitors (BSI), recently completed in one of the NA branches, reduced the estimated uncertainty on the absolute POT to a few percent. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL061
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL061
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7.
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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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8.
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Calibration of the LHC Diamond beam loss monitors for LHC Run 3
/ Morales Vigo, Sara (CERN ; Cockcroft Inst. Accel. Sci. Tech.) ; Salvachua, Belen (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech.) ; Zamantzas, Christos (CERN) ; Calvo Giraldo, Eva (CERN) ; Martinez Samblas, Javier (CERN) ; Wolfenden, Joseph (Cockcroft Inst. Accel. Sci. Tech.) ; Gonzalez-Berges, Manuel (CERN)
A set of twelve Polycrystalline Chemical Vapour Deposition (pCVD) diamond detectors are installed in the beam injection, extraction and betatron collimation areas of the Large Hadron Collider (LHC) as fast beam loss monitoring detectors. Their high-radiation tolerance and time resolution in the order of a few ns makes them an ideal candidate to monitor bunch-by-bunch losses in the LHC beams, which have a nominal bunch separation of 25 ns. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL085
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL085
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9.
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10.
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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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