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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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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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Gas jet-based beam profile monitor for the electron beam test stand at CERN
/ Stringer, O (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Zhang, H (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Ady, M (CERN) ; Butti, D (CERN) ; Churchman, A R (CERN) ; Forck, P (Darmstadt, GSI) ; Kumar, N (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) ; Sameed, M (CERN) et al.
A non-invasive bidirectional beam profile monitor using beam-induced fluorescence upon a thin sheet of gas has been developed at the Cockcroft Institute in collaboration with CERN and GSI. This device is particularly suited to the Electron Beam Test Stand, and as such, a bespoke gas injection has been optimized for this specific use-case to provide diagnostics unavailable to conventional scintillator screens. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPG18
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG18
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Design of a Prototype Gas Jet Profile Monitor for Installation Into the Large Hadron Collider at CERN
/ Veness, Raymond (CERN) ; Ady, Marton (CERN) ; Castro Sequeiro, Cristina (CERN) ; Forck, Peter (Darmstadt, GSI) ; Kumar, Narender (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Papazoglou, Ioannis (CERN) ; Rossi, Adriana (CERN) ; Salehilashkajani, Amir (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) et al.
The Beam-Gas Curtain or BGC is the baseline instrument for monitoring the concentricity of the LHC proton beam with a hollow electron beam for the hollow e-lens (HEL) beam halo suppression device which is part of the High-Luminosity LHC upgrade. The proof-of-principles experiments of this gas-jet monitor have now been developed into a prototype instrument which has been built for integration into the LHC ring and is now under phased installation for operation in the upcoming LHC run. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 363-366
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.363-366
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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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Commissioning of a Gas Jet Beam Profile Monitor for EBTS and LHC
/ Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Ady, Marton (CERN) ; Forck, Peter (Darmstadt, GSI) ; Kumar, Narender (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Papazoglou, Ioannis (CERN) ; Rossi, Adriana (CERN) ; Salehilashkajani, Amir (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Schneider, Gerhard (CERN) et al.
A gas jet beam profile monitor was designed for measuring the electron beam at the electron beam test stand (EBTS) for the Hollow electron lens (HEL) and the proton beam in the large hadron collider (LHC). It is partially installed in the LHC during the second long shutdown. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 393-396
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.393-396
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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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Simulations of Space-Charge and Guiding Fields Effects on the Performance of Gas Jet Profile Monitoring
/ Sedláček, Ondrej (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; CERN) ; Forck, Peter (Darmstadt, GSI) ; Kumar, Narender (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Mazzoni, Stefano (CERN) ; Salehilashkajani, Amir (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Udrea, Serban (Darmstadt, GSI) ; Welsch, Carsten P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Zhang, Hao D (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
Gas jet based profile monitors inject a usually curtain shaped gas jet across a charged particle beam and exploit the results of the minimally invasive beam-gas interaction to provide information about the beam’s transversal profile. Such monitor will be installed as part of the High Luminosity LHC upgrade at CERN in the Hollow Electron Lens (HEL). [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 898-901
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.898-901
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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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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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