2026-01-30
08:01 |
Demonstrating beam splitting through stable islands formed by the third-order resonance at the CERN Super Proton Synchrotron
/ Veres, Dora (CERN ; Goethe U., Frankfurt (main)) ; Bartosik, Hannes (CERN) ; Giovannozzi, Massimo (CERN) ; Paraschou, Konstantinos (CERN) ; Franchetti, Giuliano (Darmstadt, GSI)
In recent years, several new beam manipulation techniques have been proposed that exploit the crossing of nonlinear resonances and the use of stable islands of the transverse phase space. One such manipulation is a novel approach to slow extraction, which combines particle trapping in stable islands with the use of bent crystals to reduce losses on the extraction septum. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPM048
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM048
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2026-01-30
08:01 |
Quadrupole pumping for bunch shortening in the Proton Synchrotron and Super Proton Synchrotron at CERN
/ Flowerdew, Jake (CERN) ; Lasheen, Alexandre (CERN) ; Damerau, Heiko (CERN) ; Karpov, Ivan (CERN) ; Heine, Ruben (CERN)
Quadrupole pumping is a longitudinal manipulation technique for bunch shortening, which works by modulating the RF voltage at twice the synchrotron frequency to excite bunch length oscillations. These controlled oscillations rotate the bunch in longitudinal phase space, with extraction set for when the bunch is shortest. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPS028
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPS028
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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 IPAC 2025 (2025) WEPM068
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM068
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2026-01-30
08:01 |
Towards operational optics measurements with AC Dipole excitations in the CERN SPS
/ Zisopoulos, Panagiotis (CERN) ; Maclean, Ewen (CERN) ; Dilly, Joschua (CERN) ; Paraschou, Konstantinos (CERN) ; Hostettler, Michi (CERN)
In the CERN Super Proton Synchrotron (SPS), a new AC dipole excitation functionality has been implemented with the aid of the Beam-Based Feedback and Diagnostic Systems. This feature facilitates precise and systematic optics measurements, presenting a robust alternative to the conventional single-kick excitation method. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) WEPM108
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPM108
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2026-01-30
08:01 |
Achievement of LIU longitudinal parameters at the CERN SPS
/ Papotti, Giulia (CERN) ; Lasheen, Alexandre (CERN) ; Zannini, Carlo (CERN) ; de la Fuente, Elena (CERN) ; Velotti, Francesco (CERN) ; Rumolo, Giovanni (CERN) ; Bartosik, Hannes (CERN) ; Mases, Ingrid (CERN) ; Karpov, Ivan (CERN) ; Flowerdew, Jake (CERN) et al.
To prepare the Super Proton Synchrotron (SPS) as an injector for the High Luminosity Large Hadron Collider (HL-LHC), its Radiofrequency (RF) system was majorly upgraded. The 200 MHz travelling wave structures were rearranged, adding two solid-state power amplifiers and a new Low-Level RF (LLRF) system. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) TUPS028
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.TUPS028
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2026-01-30
08:01 |
Gamma Factory: A novel research programme for CERN
/ Krasny, Mieczyslaw Witold (LPNHE, Paris ; CERN)
/Gamma Factory Study Group Collaboration
$\mathbf{"New~ directions~ in~ science~ are~ launched~ by~ new~ tools~ more~ often~ than~ by~ new~ concepts."}$ At the current stage of accelerator-technology-based research, where conventional methods have reached the saturation limits of particle beam energy and intensity, the Gamma Factory (GF) project proposes breakthroughs in beam intensity (up to seven orders of magnitude), quality (low emittance, polarization with CP tagging, and flavor tagging), and precision control for several types of particle beams. The Gamma Factory can produce primary (ions), secondary (photons), and tertiary (polarized positrons, muons, neutrinos, neutrons, and radioactive ions) beams with unprecedented wall-plug-to-beam power efficiency—outperforming existing schemes by several orders of magnitude. [...]
2026 - 11 p.
- Published in : PoS EPS-HEP2025 (2026) 579
Fulltext: PDF;
In : 2025 European Physical Society Conference on High Energy Physics (EPS-HEP 2025), Marseille, France, 7 - 11 Jul 2025, pp.579
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2026-01-30
08:01 |
Preparing the future SPS fixed target beams for the SHiP experiment
/ Prebibaj, Tirsi (CERN) ; Zannini, Carlo (CERN) ; Asvesta, Foteini (CERN) ; Papotti, Giulia (CERN) ; Bartosik, Hannes (CERN) ; Damerau, Heiko (CERN) ; Mases, Ingrid (CERN) ; Li, Kevin (CERN)
A new high-intensity Beam Dump Facility (BDF), hosting the SHiP (Search of Hidden Particles) experiment, is set to begin operation in CERN’s North Area (NA) in Run 4. To meet its physics goals, SHiP aims at accumulating 4$\times$10$^{19}$ protons on target per year, which will require approximately 10$^6$ high intensity cycles from the SPS with $4.2\times10^{13}$ p$^+$ per cycle (as operationally used during the CNGS era) over a $1$ s spill length. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPS028
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPS028
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2026-01-30
08:01 |
Model-based optimisation for automated multi-turn extraction tuning at the CERN Proton Synchrotron
/ Foldesi, Levente (CERN) ; Huschauer, Alexander (CERN) ; Giovannozzi, Massimo (CERN) ; Schenk, Michael (CERN) ; Naumenko, Oleksandr (CERN) ; Kain, Verena (CERN) ; Hillert, Wolfgang (Hamburg U.)
Multi-Turn Extraction (MTE) is a resonance-based technique employed in the CERN Proton Synchrotron (PS) to split the beam in horizontal phase space before extraction to the Super Proton Synchrotron (SPS). The splitting efficiency is evaluated based on the uniformity of intensities across the beamlets, requiring fine-tuning of multiple parameters. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) THPM009
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.THPM009
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2026-01-30
08:01 |
Performance improvement studies for the CERN SPS MKDH system
/ Favia, Giorgia (CERN) ; Gomes Namora, Vasco (CERN) ; Zannini, Carlo (CERN) ; Standen, Dylan (CERN) ; Velotti, Francesco (CERN) ; Huhn, Francisco (CERN) ; Papastergiou, Konstantinos (CERN) ; Ducimetière, Laurent (CERN) ; Diaz Zumel, Miguel (CERN) ; Trubacova, Pavlina (CERN) et al.
The CERN-SPS beam dump system (SBDS) is equipped with a dilution kicker system, the so-called MKDH. During the 2022 and 2023 beam commissioning, the vacuum rise in the MKDH became a concern for reaching the anticipated higher beam intensities. [...]
2025 - 4 p.
- Published in : JACoW IPAC 2025 (2025) MOPM066
Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPM066
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2026-01-29
07:14 |
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