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2026-01-29
07:14
A radiation-resistant distributed temperature sensor for CERN’s accelerators / Di Francesca, Diego (CERN) ; Blanc, Jeremy (CERN) ; Colaco, Flavien (CERN) ; Contini, Lorenzo (CERN) ; Dole, Michael (CERN) ; Evrard, Sebastien (CERN) ; Fernandez, Julien (CERN) ; Kallada Janardhan, Rahul (CERN) ; Nissen, Henrik (CERN) ; Ricci, Daniel (CERN) et al.
Optical Fibre Sensors (OFS) possess unique features, such as high sensitivity, versatility, and the ability to operate in harsh radiation environments. Distributed OFS are notable for enabling real-time monitoring over large-scale facilities, making them ideal for applications in particle accelerators. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) THPB034 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.THPB034

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2026-01-27
07:46
Electron cloud mitigation techniques for the FCC-ee / Sabato, Luca (Ecole Polytechnique, Lausanne) ; Bartosik, Hannes (CERN) ; Carli, Christian (CERN) ; Iadarola, Giovanni (CERN) ; Mether, Lotta (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Zimmermann, Frank (CERN)
The Future Circular Collider (FCC)-ee is a planned electron-positron collider under development. The future collider would be built in an about 91 km ring-shaped underground tunnel located beneath the French departments of Haute-Savoie and Ain, and the Swiss canton of Geneva. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) WEPS050 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.WEPS050

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2026-01-27
07:46
Interplay between sextupole settings and single particle instabilities during the FCC-ee commissioning / Skoufaris, Kyriacos (CERN) ; Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne) ; Tomas, Rogelio (CERN)
The Future Circular Collider of electrons and positrons (FCC-ee) is designed to achieve high luminosity at center-of-mass energies ranging from the Z boson peak to the top quark threshold. During the commissioning phase, specialized optics are essential to accommodate the dynamic needs of machine tuning and beam stabilization. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) MOPM028 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.MOPM028

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2026-01-24
06:36
Status of the CERN optics measurement and correction analysis tools / Dilly, Joschua (CERN) ; Wegscheider, Andreas (CERN) ; Maclean, Ewen (CERN) ; Carlier, Felix (CERN) ; Soubelet, Felix (CERN) ; Gray, Joshua (CERN) ; Le Garrec, Mael (CERN) ; Tomas, Rogelio (CERN) ; Horney, Sasha (CERN) ; Persson, Tobias (CERN)
With a change in the LHC machine optics foreseen for 2025 and the possible reduction of beta-star, optics commissioning will become even more of a challenge for the CERN Optics Measurement and Correction (OMC) team. In particular, the increased sensitivity of the optics to non-linear imperfections, requiring a plethora of accurate measurements, is expected to be a time consuming task. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 1972 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.1972

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2026-01-24
06:36
Application of distributed temperature sensor for fire and cryogenic leak detection in accelerator tunnels / Dole, Michael (CERN) ; Di Francesca, Diego (CERN) ; Nissen, Henrik (CERN) ; Blanc, Jeremy (CERN) ; Bremer, Johan (CERN) ; FERNANDEZ, Julien (CERN) ; Dufay-Chanat, Laetitia (CERN) ; Contini, Lorenzo (CERN) ; Van de veire, Matthias (CERN) ; Rios, Oriol (CERN) et al.
High-energy accelerators like CERN’s Large Hadron Collider (LHC) present hazards characterized by temperature variations such as cryogenic leak or fire. Considering that LHC tunnels are large, underground, and radioactive areas, alternatives to traditional systems are explored to improve hazard detection. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 2996 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.2996

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2026-01-24
06:36
Longitudinal beam coupling impedance of unshielded pumping manifolds at the CERN PS / Neroni, Michela (U. Rome La Sapienza (main) ; CERN) ; Damerau, Heiko (U. Rome La Sapienza (main) ; CERN) ; Ferreira Somoza, Jose (U. Rome La Sapienza (main) ; CERN) ; Flowerdew, Jake (U. Rome La Sapienza (main) ; CERN) ; Lasheen, Alexandre (U. Rome La Sapienza (main) ; CERN) ; Popovic, Branko (Argonne, PHY) ; Santos, Miguel (U. Rome La Sapienza (main) ; CERN) ; Vollinger, Christine (U. Rome La Sapienza (main) ; CERN)
The High-Luminosity LHC (HL-LHC) project aims at increasing beam intensity, hence posing tight constraints on its injector chain. A critical issue in the Proton Synchrotron (PS) is the contribution of numerous pumping manifolds to the longitudinal beam coupling impedance at high frequencies. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 2310 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.2310

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2026-01-24
06:36
A multichannel Frequency Scanning Interferometry system for large scale metrology of accelerator components / Sosin, Mateusz (U. Rome La Sapienza (main) ; CERN) ; Marquet, Alexis (U. Rome La Sapienza (main) ; CERN) ; Schofield, Brad (U. Rome La Sapienza (main) ; CERN) ; Franco, Clara Cala (U. Rome La Sapienza (main) ; CERN) ; Durand, Helene Mainaud (U. Rome La Sapienza (main) ; CERN) ; Gonzalez Cobas, Juan (U. Rome La Sapienza (main) ; CERN) ; Lipinski, Maciej (U. Rome La Sapienza (main) ; CERN) ; Fernandez Cruchaga, Miguel (U. Rome La Sapienza (main) ; CERN) ; Peronnard, Paul (U. Rome La Sapienza (main) ; CERN) ; Wlostowski, Tomasz (U. Rome La Sapienza (main) ; CERN)
In the frame of the High-Luminosity LHC (HL-LHC) project at CERN, a series of sensor solutions based on Frequency Scanning Interferometry (FSI) has been proposed for the alignment and monitoring of accelerator components along a total length of more than 800 m. The adoption of FSI technology reduces the overall cost of alignment installations, mitigates the impact of environmental noise, and limits the space required for signal cables. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 2984 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.2984

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2026-01-24
06:36
Transverse tolerances in the plasma-wakefield acceleration blow-out regime / Adli, Erik (U. Oslo (main)) ; Lindstrøm, Carl A (U. Oslo (main)) ; Kalvik, Daniel (U. Oslo (main)) ; Chen, Jian Bin Ben (CERN ; U. Oslo (main)) ; Sjobak, Kyrre (U. Oslo (main)) ; Finnerud, Ole Gunnar (U. Oslo (main)) ; Drobniak, Pierre (IJCLab, Orsay ; U. Oslo (main))
We report on recent progress in transverse instabilities and transverse tolerances for plasma-wakefield accelerators in the blow-out regime. In this regime, the transverse fields provide both strong focusing and strong deflection via transverse wakefields. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 1434 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.1434

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2026-01-24
06:36
Impact of the geometric impedance of collimators on beam stability in FCC-ee / Gibellieri, Dora (CERN) ; Ghribi, Adnan (GANIL) ; Zannini, Carlo (CERN) ; Migliorati, Mauro (Frascati) ; Zobov, Mikhail (Frascati)
Beam stability in the FCC-ee collider is strongly influenced by transverse and longitudinal beam coupling impedance. Developing a flexible and comprehensive impedance model is crucial for accurately evaluating and mitigating instabilities as machine parameters evolve. [...]
2025 - 4 p. - Published in : JACoW IPAC 2025 (2025) 2137 Fulltext: PDF;
In : International Particle Accelerator Conference (IPAC'25), Taipei, Taiwan, 1-6 June 2025, pp.2137

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2026-01-22
16:18
Study of longitudinal beam instabilities at transition crossing in the CERN Proton Synchrotron / Salinas, Julia Eva (Centrale Supelec (FR)) ; Lasheen, Alexandre (CERN)
The Proton Synchrotron (PS) faces beam stability challenges when crossing transi- tion energy, where longitudinal microwave instabilities can lead to rapid emittance blow-up and beam loss. [...]
CERN-ACC-NOTE-2026-0001. - 2026

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