2026-02-10
12:56 |
Thresholds of longitudinal multi-bunch instabilities in double harmonic RF systems
/ Heine, Ruben (CERN ; Berlin, Tech. U.) ; Karpov, Ivan (CERN) ; Keusgen, Wilhelm (Berlin, Tech. U.) ; Intelisano, Leandro (CERN) ; Calaga, Rama (CERN) ; Papotti, Giulia (CERN) ; Flowerdew, Jake (CERN)
Multi-bunch instabilities, often driven by narrowband impedance sources such as higher-order modes, present significant intensity limitations in synchrotrons. One approach to mitigate these instabilities is applying a double harmonic radio frequency (RF) system, which can increase the intensity threshold by enlarging the synchrotron frequency spread. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPS076
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPS076
|
Notice détaillée
|
2026-02-10
12:56 |
A novel approach to qualify the straightness of electrostatic septa for the SPS slow extraction
/ Lackner, Friedrich (CERN) ; Prost, Antoine (CERN) ; Balhan, Bruno (CERN) ; Durieux, Camille (CERN ; Unlisted, FR) ; Boucly, Christophe (CERN) ; Monier, Colin (CERN) ; Vincke, Helmut (CERN) ; Ducimetière, Laurent (CERN) ; Fraser, Matthew (CERN) ; van den Kieboom, Reyn (Unlisted, NL ; CERN)
The quality of slow extraction from the SPS (Super ProtonSynchrotron) to the North Area is critically influenced bythe straightness tolerance of the electrostatic septum. Pastobservations have identified a degradation of the anode bodystraightness, resulting in an increased beam loss during ex-traction. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) THPB057
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.THPB057
|
Notice détaillée
|
2026-02-08
06:21 |
Notice détaillée
|
2026-02-06
13:52 |
Notice détaillée
|
2026-02-05
06:32 |
Notice détaillée
|
2026-02-03
07:21 |
The future of the CLEAR facility: consolidation, ongoing upgrades and its evolution towards future electron facilities at CERN
/ Corsini, Roberto (CERN) ; Farabolini, Wilfrid (CERN) ; Gamba, Davide (CERN) ; Gilardi, Antonio (Naples U.) ; Granados, Eduardo (CERN) ; Aksoy, Avni (CERN) ; Franek, Ondrej (CERN ; CTU, Prague) ; Korysko, Pierre (CERN) ; Malyzhenkov, Alexander (CERN) ; Mazzoni, Stefano (CERN) et al.
The CERN Linear Accelerator for Research (CLEAR) is a versatile 200 MeV electron linac followed by an experimental beam-line, operated at CERN as a user facility. Its user community includes research groups working on beam instrumentation R&D;, advanced acceleration techniques and irradiation studies, including medical applications. [...]
2025 - 4 p.
- Published in : JACoW IPAC2025 (2025) TUPM027
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.TUPM027
|
Notice détaillée
|
2026-02-03
07:21 |
Status of the low-Z SPS slow extraction electrostatic septum development
/ Lackner, Friedrich (CERN) ; Prost, Antoine (CERN) ; Balhan, Bruno (CERN) ; Vincke, Helmut (CERN) ; Ducimetière, Laurent (CERN) ; Fraser, Matthew (CERN) ; Bestmann, Patrick (CERN) ; van den Kiebooom, Reyn (Unlisted, NL ; CERN)
The impact of high-flux protons on beam loss during slow extraction from the SPS to the North Area has been discussed, and improvements have been proposed focusing on reducing activation, lifetime reduction, and anode body distortion. The conducted studies shall demonstrate the feasibility of replacing the stainless-steel tank, flanges, and anode body with low-Z materials. [...]
2025 - 4 p.
- Published in : JACoW IPAC2025 (2025) THPB058
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.THPB058
|
Notice détaillée
|
2026-02-03
07:21 |
Cavity loops Influence on the single-bunch Instability thresholds of the CERN PS Booster
/ Marchi, Mariangela (CERN ; U. Rome La Sapienza (main)) ; Barrientos, Diego (CERN) ; Gnemmi, Giulia (CERN) ; Albright, Simon (CERN)
The CERN Proton Synchrotron Booster (PSB) delivers a wide variety of high-intensity and high-brightness proton beams to several destinations, including operations at the Large Hadron Collider (LHC) and various fixed-target experiments. Following the Long Shutdown 2 (LS2) upgrades, discrepancies between beam measurements and macro-particle simulations were observed, highlighting the need for a deeper understanding of the longitudinal impedance and related effects in the PSB. [...]
2025 - 4 p.
- Published in : JACoW IPAC2025 (2025) WEPM082
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM082
|
Notice détaillée
|
2026-02-03
07:21 |
Notice détaillée
|
2026-01-30
08:01 |
Broadband characterization of the CERN-SPS driving and detuning impedance
/ de la Fuente, Elena (CERN ; Tech. U. Madrid (main)) ; Zannini, Carlo (CERN) ; Rumolo, Giovanni (CERN) ; Bartosik, Hannes (CERN) ; Mases, Ingrid (CERN ; Goethe U., Frankfurt (main)) ; González Torre, Miguel (CERN ; Tech. U. Madrid (main))
The CERN-SPS transverse impedance model plays an important role in predicting beam stability and guiding machine operation. This work advances the benchmarking of the SPS vertical impedance model through experimental investigations of mode-zero instability growth rates and intensity-dependent tune shifts as a function of chromaticity. [...]
2025 - 4 p.
- Published in : JACoW IPAC2025 (2025) WEPM068
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM068
|
Notice détaillée
|
|
|