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Topologies for the kicker systems of the FCC-ee collider and injectors / Martinek, Petr (CERN) ; Favia, Giorgia (CERN) ; Barnes, Michael (CERN) ; Diaz Zumel, Miguel (CERN) ; Yue, Sen (CERN) ; Kramer, Thomas (CERN) ; Dutheil, Yann (CERN)
A central part of CERN’s Future Circular collider study (FCC) is a ~91 km circumference lepton collider and its injector complex. This contribution outlines the various kicker systems needed to transport the lepton beams from the electron source up to the collider dump system. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPC40 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC40

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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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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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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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Updates on Impact Ionisation Triggering of Thyristors / del Barrio Montañés, Alicia Ana (CERN ; KIT, Karlsruhe) ; Senaj, Viliam (CERN) ; Kramer, Thomas (CERN) ; Sack, Martin (KIT, Karlsruhe)
High voltage (HV) generators are used in multiple industrial and scientific facilities. Recent publications have demonstrated that triggering industrial thyristors (relatively slow switching devices) in overvoltage mode, also called impact ionization mode, significantly enhances their dU/dt and dI/dt characteristics. [...]
2024 - 17 p. - Published in : Appl. Sciences 14 (2024) 4196 Fulltext: PDF;

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New pulse forming line and transmission cables for the CERN PS booster extraction and transfer kickers / Kramer, Thomas (CERN) ; del Barrio Montañés, Alicia (CERN) ; Ducimetière, Laurent (CERN) ; Trubacova, Pavlina (CERN) ; Stadlbauer, Tobias (CERN)
The CERN PS booster features four extraction kicker systems, one for each of the four superposed rings and three transfer kicker systems for recombination of the beams when being transferred towards the PS. Each of these systems consist of SF6 gas filled Pulse Forming Lines (PFL) which are resonantly charged and then fast discharged by thyratron switches into SF6 gas filled transmission cables, transferring the pulse to the magnets. [...]
2023 - 3 p. - Published in : JACoW IPAC 2023 (2023) THPA162 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPA162

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A Saturable Pulse Transformer Based on Nanocrystalline Magnetic Cores for an Adjustable Nanosecond High-Voltage Generator / Degnon, Mawuena R ; Gusev, Anton I ; de Ferron, Antoine Silvestre ; Pecastaing, Laurent ; Baranov, Aleksandr ; Mielot, Christophe ; Boisne, Sébastien ; Barnes, Michael J (CERN) ; Senaj, Viliam (CERN) ; Kramer, Thomas (CERN) et al.
This article is devoted to saturable pulse transformers (SPTs), combining the functions of a pulse transformer and a magnetic switch. Two nanocrystalline magnetic cores are investigated in the SPT of an inductive energy storage (IES) pulsed power system based on a semiconductor opening switch (SOS). [...]
2023 - 9 p. - Published in : IEEE Trans. Plasma Sci. 51 (2023) 2849-2857

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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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Branch Module for an Inductive Voltage Adder for Driving Kicker Magnets with a Short Circuit Termination / Ruf, Johannes (CERN) ; Barnes, Michael (CERN) ; Dutheil, Yann (CERN) ; Kramer, Thomas (CERN) ; Sack, Martin (KIT, Karlsruhe, IAP)
For driving kicker magnets terminated in a short circuit, a branch module for an inductive voltage adder has been designed and assembled. The module has been designed for a maximum charging voltage of 1.2 kV and an output current of 200 A considering the current doubling due to the short circuit termination. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2875-2878 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2875-2878

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10.

Ultra-Fast Generator for Impact Ionization Triggering / del Barrio Montañés, Alicia (CERN) ; Dutheil, Yann (CERN) ; Kramer, Thomas (CERN) ; Sack, Martin (KIT, Karlsruhe, IKP) ; Senaj, Viliam (CERN)
Impact ionization triggering can be successfully applied to standard thyristors, thus boosting their dI/dt capability by up to 1000x. This groundbreaking triggering requires applying significant overvoltage on the anode-cathode of thyristor with a slew rate > 1kV/ns. [...]
2022 - 3 p. - Published in : JACoW IPAC 2022 (2022) 2872-2874 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2872-2874

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See also: similar author names
173	Kramer, T
1	Kramer, T A
95	Kramer, T.
11	Kramer, Tami
50	Kramer, Thomas
305	Kramer, Tobias
173	Krämer, T
95	Krämer, T.
1	Krämer, Th

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