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SPS injection kicker system: 2023 operational experience and upgrade proposals for high-luminosity LHC
/ Favia, Giorgia (CERN) ; Zannini, Carlo (CERN) ; Standen, Dylan (CERN) ; Velotti, Francesco (CERN) ; Ducimetière, Laurent (CERN) ; Feliciano, Luis (CERN) ; Barnes, Michael (CERN) ; Diaz Zumel, Miguel (CERN) ; Trubacova, Pavlina (CERN) ; Kramer, Thomas (CERN) et al.
The SPS injection kicker system comprises twelve MKP-S (small aperture) modules and four MKP-L (large aperture) modules. An upgraded MKP-L magnet was installed in the SPS, during December 2022, in view of the higher beam intensity needed in the future for High-Luminosity-LHC. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC38
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC38
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2.
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Initial operational experience of an LHC injection kicker magnet upgraded for HL-LHC
/ Barnes, Michael (CERN) ; Diaz Zumel, Miguel (CERN) ; Bracco, Chiara (CERN) ; Standen, Dylan (CERN) ; Favia, Giorgia (CERN) ; Ducimetière, Laurent (CERN) ; Trubacova, Pavlina (CERN) ; Kramer, Thomas (CERN) ; Stadlbauer, Tobias (CERN) ; Gomes Namora, Vasco (CERN)
The intensity of the HL-LHC beam will be twice that of LHC. Hence, an upgrade of the LHC injection kickers (MKIs) is necessary for HL-LHC to avoid excessive beam induced heating of the MKIs. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC36
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC36
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Operational experience of a low beam coupling impedance injection kicker magnet for the CERN SPS ring
/ Barnes, M J (CERN) ; Bartmann, W (CERN) ; Díaz, M (CERN) ; Ducimetière, L (CERN) ; Favia, G (CERN) ; Feliciano, L (CERN) ; Kramer, T (CERN) ; Namora, V (CERN) ; Standen, D (CERN) ; Stadlbauer, T (CERN) et al.
The CERN SPS injection kicker magnets (MKP) were developed in the 1970's, before beam power deposition was considered an issue. There are two types of these magnets in the SPS: MKP-S (small aperture) and MKP-L (large aperture) versions. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPA164
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA164
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Mitigation of High Voltage Breakdown of the Beam Screen of a CERN SPS Injection Kicker Magnet
/ Barnes, Michael (CERN) ; Bartmann, Wolfgang (CERN) ; Díaz Zumel, Miguel (CERN) ; Ducimetière, Laurent (CERN) ; Feliciano, Luis (CERN) ; Kramer, Thomas (CERN) ; Namora, Vasco (CERN) ; Stadlbauer, Tobias (CERN) ; Standen, Dylan (CERN) ; Trubacova, Pavlina (CERN) et al.
The SPS injection kicker magnets (MKP) were developed in the 1970’s, before beam induced power deposition was considered an issue. These magnets are very lossy from a beam impedance perspective: this is expected to be an issue during SPS operation with the higher intensity beams needed for HL-LHC. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2868-2871
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2868-2871
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SPS Beam Dump System (SBDS) Commissioning After Relocation and Upgrade
/ Van Trappen, Pieter (CERN) ; Carlier, Etienne (CERN) ; Ducimetière, Laurent (CERN) ; Namora, Vasco (CERN) ; Senaj, Viliam (CERN) ; Velotti, Francesco (CERN) ; Voumard, Nicolas (CERN)
In order to overcome several machine limitations, the SBDS has been relocated from LSS1 (Long Straight Section 1) to LSS5 during LS2 (Long Shutdown 2) with an important upgrade of the extraction kicker installation. An additional vertical deflection kicker magnet (MKDV) was produced and installed while the high voltage (HV) pulse generators have been upgraded by changing gas-discharge switches (thyratrons and ignitrons) to semiconductor stacks operating in oil. [...]
2022 - 3 p.
- Published in : JACoW IPAC 2022 (2022) 2530-2532
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2530-2532
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Studies for Mitigating Flashover of CERN-LHC Dilution Kicker Magnets
/ Loebner, Alina M (CERN) ; Barnes, Michael J (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Ducimetière, Laurent (CERN) ; Namora, Vasco (CERN) ; Senaj, Viliam (CERN)
The LHC beam dump system is used for extracting beam from the LHC and, as such, is a safety critical system whose proper functionality must be assured. Dilution kicker magnets (MKBs) sweep the extracted beam over the cross-sectional area of a dump block as the energy density would otherwise be too high and damage the block. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3498-3501
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3498-3501
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Machine protection aspects of high-voltage flashovers of the LHC beam dump dilution kickers
/ Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Calviani, Marco (CERN) ; Carlier, Etienne (CERN) ; Ducimetière, Laurent (CERN) ; Frankl, Matthias (CERN) ; Fraser, Matthew (CERN) ; Gilardoni, Simone (CERN) ; Goddard, Brennan (CERN) et al.
The LHC Beam Dump System is required to safely dispose of the energy of the stored beam. In order to reduce the energy density deposited in the beam dump, a dedicated dilution system is installed. [...]
CERN-ACC-2019-208.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPMP040
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP040
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Eradication of Mercury Ignitron from the 400 kA Magnetic Horn Pulse Generator for CERN Antiproton Decelerator
/ Namora, Vasco (CERN) ; Calviani, Marco (CERN) ; Ducimetière, Laurent (CERN) ; Faure, Patrick (CERN) ; Fernandez, Luis (CERN) ; Grawer, Gregor (CERN) ; Senaj, Viliam (CERN)
The CERN Antiproton Decelerator (AD) produces low-energy antiprotons for studies of antimatter. A 26 GeV proton beam impacts the AD production target which produces secondary particles including antiprotons. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPMF086
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF086
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Instabilities and beam induced heating in 2015
/ Carver, L R (CERN) ; Arduini, G (CERN) ; Astapovych, D (CERN) ; Barnes, M (CERN) ; Barranco, J (CERN) ; Biancacci, N (CERN) ; Buffat, X (CERN) ; Day, H (CERN) ; Hofle, W (CERN) ; Iadarola, G (CERN) et al.
Instabilities were observed during operation at injection, flat top and during
the betatron squeeze. This resulted in high chromaticities and octupole currents
in all stages of the machine cycle. [...]
Geneva : CERN, 2016 - 6 p.
- Published in : (2016) , pp. 95-100
Fulltext: PDF;
In : 6th Evian Workshop on LHC beam operation, Evian Les Bains, France, 15 - 17 Dec 2015, pp.95-100
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Operational Experience of the Upgraded LHC Injection Kicker Magnets
/ Barnes, Michael (CERN) ; Adraktas, Antonios (CERN) ; Bregliozzi, Giuseppe (CERN) ; Calatroni, Sergio (CERN) ; Day, Hugo (CERN) ; Ducimetière, Laurent (CERN) ; Goddard, Brennan (CERN) ; Gomes Namora, Vasco (CERN) ; Mertens, Volker (CERN) ; Salvant, Benoit (CERN) et al.
During Run 1 of the LHC the injection kicker magnets caused occasional operational delays due to beam induced heating with high bunch intensity and short bunch lengths. In addition, sometimes there were also sporadic issues with microscopic unidentified falling objects, vacuum activity and electrical flashover of the injection kickers. [...]
CERN-ACC-2016-161.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-THPMW033
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMW033
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