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1.
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Upgrade of the CERN SPS Extraction Protection Elements TPS
/ Borburgh, Jan (CERN) ; Balhan, Bruno (CERN) ; Barnes, Michael (CERN) ; Baud, Cedric (CERN) ; Fraser, Matthew (CERN) ; Kain, Verena (CERN) ; Maciariello, Fausto (CERN) ; Steele, Genevieve (CERN) ; Velotti, Francesco (CERN)
In 2006 the protection devices upstream of the septa in both extraction channels of the CERN SPS to the LHC were installed. Since then, new beam parameters have been proposed for the SPS beam towards the LHC in the framework of the LIU project. [...]
2015 - 4 p.
- Published in : 10.18429/JACoW-IPAC2015-WEPMN068
Fulltext: PDF; External link: Full-text at JACoW Server
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPMN068
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2.
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Improvements of the SPS slow extraction electrostatic septum
/ Lackner, Friedrich (CERN) ; Prost, Antoine (CERN) ; Balhan, Bruno (CERN) ; Pirozzi, Fabrizio (CERN) ; Vincke, Helmut (CERN) ; Borburgh, Jan (CERN) ; Kawa, Krzysztof (CERN ; AGH-UST, Cracow) ; Jorat, Louise Olivia (CERN) ; Fraser, Matthew (CERN) ; Roudaut, Noah (CERN ; UTBM, Belfort)
The impact of high-flux protons on the inherent beam loss in the slow extraction straight from SPS towards the North Area has been recently discussed and potential improvements have been proposed. These solutions are mainly aiming to reduce the high component activation and related reduction of lifetime, as well as observed non-straightness in the anode body. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC72
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC72
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3.
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Optimization of mechanical robustness in the booster injection bumpers
/ Lackner, Friedrich (CERN) ; Atanasov, Miroslav (CERN) ; Balhan, Bruno (CERN) ; Baud, Cedric (CERN) ; Borburgh, Jan (CERN) ; M Walraven (Inholland U. Appl. Sci., Alkmaar)
During the Long Shutdown 2 (LS2) at CERN, the new Linac4 (L4) accelerator has been successfully connected to the PS Booster (PSB) to inject 160 MeV H− beam into the 4 superposed PSB rings. The horizontal displacement of the circulating beam during injection relies on 4 pulsed dipole magnets. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPM018
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM018
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4.
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Design optimization of the water-cooled coil for the LEIR extraction septum
/ Lackner, Friedrich (CERN) ; Balhan, Bruno (CERN) ; Motschmann, Fritz (CERN) ; Borburgh, Jan (CERN) ; Atanasov, Miroslav (CERN) ; Masson, Thierry (CERN) ; Erends, Vera (Utrecht U.)
A pulsed septum magnet (SMH40) is used for heavy ion extraction from the Low Energy Ion Ring (LEIR). A non-conformity on the coil cooling circuit made it necessary to consolidate the design of the septum blade and related manufacturing process. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPM019
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPM019
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5.
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Achievements and Performance Prospects of the Upgraded LHC Injectors
/ Kain, Verena (CERN) ; Albright, Simon (CERN) ; Alemany-Fernández, Reyes (CERN) ; Angoletta, Maria Elena (CERN) ; Antoniou, Fanouria (CERN) ; Argyropoulos, Theodoros (CERN) ; Asvesta, Foteini (CERN) ; Balhan, Bruno (CERN) ; Barnes, Michael (CERN) ; Barrientos, Diego (CERN) et al.
To provide HL-LHC performance, the CERN LHC injector chain underwent a major upgrade during an almost 2-year-long shutdown. In the first half of 2021 the injectors were gradually re-started with the aim to reach at least pre-shutdown parameters for LHC as well as for fixed target beams. [...]
2022 - 6 p.
- Published in : JACoW IPAC 2022 (2022) 1610-1615
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1610-1615
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6.
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Final Acceptance Testing of the CERN SPS Electrostatic Septa
/ Balhan, B (CERN) ; Barlow, R A (CERN) ; Borburgh, J (CERN) ; Farricker, A (CERN) ; Mo, J A (CERN) ; Prost, A (CERN)
In the framework of the LHC Injector Upgrade (LIU) project, the high field electrostatic septa (so-called ZS) have been upgraded to comply with the new requirements. Prior to their installation in the SPS accelerator in 2020, the septa were tested to verify their final performance. [...]
2021 - 4 p.
- Published in : 10.1109/ISDEIV46977.2021.9587034
In : 29th International Symposium on Discharges and Electrical Insulation in Vacuum, Online, 26 - 30 Sep 2021, pp.454-457
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7.
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Feasibility Study for the Novel CERN PS Fast Extraction Septum
/ Helseth, Trygve (CERN) ; Atanasov, Miroslav G (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN) ; Ducimetière, Laurent (CERN) ; Fraser, Matthew A (CERN) ; Kramer, Thomas (CERN)
In the framework of accelerator consolidation, a feasibility study for a novel CERN PS extraction septum has been conducted. Functional requirements have been established and, accordingly, a system of two septa magnets and their associated pulse generator is proposed. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2363-2366
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2363-2366
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8.
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Experimental Results of Low-Z Materials as a High Voltage Septum Anode
/ Borburgh, J (CERN) ; Balhan, B (CERN) ; Goddard, B (CERN) ; Jorat, L (CERN) ; Prost, A (CERN)
In the framework of the Physics Beyond Colliders study (PBC) at CERN, considerable efforts are being made to reduce the beam loss and remnant activation of the slow extraction equipment in the SPS LSS2 region. Simulations have demonstrated that changing the material of the septum anode, presently consisting of an array of WRe wires, for a low-Z alternative could reduce the overall activation of the extraction region in the order of 30%. [...]
2021 - 4 p.
- Published in : 10.1109/ISDEIV46977.2021.9586893
In : 29th International Symposium on Discharges and Electrical Insulation in Vacuum, Online, 26 - 30 Sep 2021, pp.446-449
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9.
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Improvement of the CERN SPS electrostatic septa ion traps
/ Balhan, B (CERN) ; Barlow, R A (CERN) ; Borburgh, J (CERN) ; Raffaele, G (Bari Polytechnic)
At CERN, the SPS synchrotron is equipped with a slow extraction channel towards the fixed target beam lines in the North Area This channel includes five consecutive electrostatic septa, where the field free region and the active high field region are separated by an array of tungsten-rhenium wires. The field-free region provides for the circulating beam, while the high field region is used to deflect the extracted beam. [...]
2016 - 4 p.
- Published in : 10.1109/DEIV.2016.7764034
In : The 27th International Symposium on Discharges and Electrical Insulation in Vacuum (27th ISDEIV), Suzhou, China, 18 - 23 Sep 2016, pp.7764034
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10.
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Reduction of 400 GeV/c slow extraction beam loss with a wire diffuser at the CERN Super Proton Synchrotron
/ Goddard, Brennan (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN) ; Esposito, Luigi (CERN) ; Fraser, Matthew Alexander (CERN) ; Jorat, Louise (CERN) ; Kain, Verena (CERN) ; Lolliot, Christophe (CERN) ; Stoel, Linda Susan (CERN) ; van Trappen, Pieter (CERN) et al.
Slow extraction of a quasicontinuous flux of high-energy protons is an important requirement for many high-energy physics experiments. This extraction type is associated with an unavoidable beam loss due to scattering on the thin septum element. [...]
2020 - 13 p.
- Published in : Phys. Rev. Accel. Beams 23 (2020) 023501
Fulltext: PDF;
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