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Production and validation of the RF cooling damper for the LHC injection kickers
/ Trubacova, Pavlina (CERN) ; Gerardin, Alexandre (CERN) ; Favia, Giorgia (CERN) ; Geisser, Jean-Marie (CERN) ; Scibor, Karol (CERN) ; Ducimetière, Laurent (CERN) ; Barnes, Michael (CERN) ; Diaz Zumel, Miguel (CERN) ; Kramer, Thomas (CERN)
Fast single-turn injection kicker systems deflect incoming beam onto the orbit of the LHC. The higher intensities of High Luminosity (HL) LHC beams are predicted to cause the ferrite yokes of the LHC injection kicker magnets (MKI), in their current configuration, to heat up to their Curie temperature. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC39
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC39
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2.
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Qualification of components for installation in LHC kicker magnets
/ Diaz Zumel, Miguel (CERN) ; Bracco, Chiara (CERN) ; Standen, Dylan (CERN) ; Favia, Giorgia (CERN) ; Ducimetière, Laurent (CERN) ; Barnes, Michael (CERN) ; Trubacova, Pavlina (CERN) ; Maurin, Theo (CERN) ; Stadlbauer, Tobias (CERN)
LHC injection kickers (MKI) are pulsed at high voltage to achieve magnetic field pulses with fast rise time. The MKIs contain a beam screen to help shield their ferrite yoke from beam induced heating. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPS61
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPS61
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3.
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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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4.
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Impedance and Thermal Studies of the LHC Injection Kicker Magnet Upgrade
/ Barnes, Michael J (CERN) ; Bjorkqvist, Oskar (CERN) ; Motschmann, Fritz (CERN)
The bunch intensities of High Luminosity (HL) LHC are predicted to lead to heating of the ferrite yokes of the LHC injection kicker magnets (MKI), in their current configuration, to their Curie temperature. Hence, the MKIs are being upgraded to meet the requirements of HL-LHC, which is planned to start in the mid-2020s. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3502-3505
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3502-3505
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5.
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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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6.
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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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7.
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MKP-L Impedance Mitigation and Expectations for MKP-S in the CERN-SPS
/ Zannini, Carlo (CERN) ; Barnes, Michael (CERN) ; Beck, Mario (CERN) ; Díaz Zumel, Miguel (CERN) ; Ducimetière, Laurent (CERN) ; Rumolo, Giovanni (CERN) ; Standen, Dylan (CERN) ; Trubacova, Pavlina (CERN)
Beam coupling impedance mitigation is key in preventing intensity limitations due to beam stability issues, heating and sparking. In this framework, a very good example is the optimization of the SPS kickers beam-coupling impedance for beam-induced heating mitigation. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 466-469
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.466-469
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8.
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Preliminary Design of a Cooling System for the LHC Injection Kicker Magnets
/ Vega Cid, Lorena (CERN) ; Abánades, Alberto (Madrid, Polytechnic U.) ; Barnes, Michael (CERN) ; Ducimetière, Laurent (CERN) ; Moester, Max (CERN) ; Vlachodimitropoulos, Vasileios (CERN) ; Weterings, Wim (CERN)
The CERN Large Hadron Collider (LHC) is equipped with two fast pulsed magnet systems (MKIs) that inject particle beams from the injector chain. Future operation for High Luminosity LHC (HL-LHC) with high intensity beams will cause heating of the ferrite yokes of the MKIs beyond their Curie temperature, preventing injection until the yokes cool down. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPMK001
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMK001
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9.
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Cooling of the LHC Injection Kicker Magnet Ferrite Yoke: Measurements and Future Proposals
/ Sobiech, Z (CERN) ; Barnes, MJ (CERN) ; Bouleghlimat, S (CERN) ; Ducimetière, L (CERN) ; Garlaschè, M (CERN) ; Kramer, T (CERN) ; Namora, V (CERN) ; Noulibos, R (CERN) ; Sillanoli, Y (CERN) ; Weterings, W (CERN)
LHC operation with high intensity beam, stable for many hours, resulted in significant heating of the ferrite yoke of the LHC Injection Kicker Magnets. For one kicker magnet the ferrite yoke approached its Curie temperature. [...]
CERN-ACC-2014-0241.-
Geneva : CERN, 2014 - 4 p.
Fulltext: PDF; External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.544
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10.
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Beam Induced Ferrite Heating of the LHC Injection Kickers and Proposals for Improved Cooling
/ Barnes, M J (CERN) ; Caspers, F (CERN) ; Calatroni, S (CERN) ; Day, H (CERN) ; Ducimetière, L (CERN) ; Garlaschè, M (CERN) ; Gomes Namora, V (CERN) ; Mertens, V (CERN) ; Sobiech, Z (CERN) ; Taborelli, M (CERN) et al.
The two LHC injection kicker systems produce an integrated field strength of 1.3 T·m with a flattop duration variable up to 7860 ns, and rise and fall times of less than 900 ns and 3000 ns, respectively. A beam screen is placed in the aperture of each magnet, which consists of a ceramic tube with conductors in the inner wall. [...]
CERN-ACC-2013-0073.-
Geneva : CERN, 2013 - 4 p.
Fulltext: PDF;
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.732
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