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ATS UNCLASSIFIED

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2026-01-23
14:36
MD10483: Investigations of UFO Release Mechanisms using Displaced Bunches / Ziegler, Philipp Alois (Goethe University Frankfurt (DE)) ; Belanger, Philippe ; Buffat, Xavier (CERN) ; Calvo, Eva (CERN) ; Coco, Victor (CERN) ; Gancarcik, David ; Gonzalez Berges, Manuel (CERN) ; Hernalsteens, Cedric (CERN) ; Holmberg, Johan Alfred ; Hostettler, Michi (CERN) et al.
Interactions of dust grains with the LHC beams cause beam losses that can trigger premature beam aborts or even quenches of superconducting dipoles. [...]
CERN-ACC-NOTE-2024-0039. - 2024
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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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2025-12-19
15:40
Specific Requirements and Challenges in Operation due to Switching between Therapy and Research Operation Modes for a Next Ion Medical Machine / Grubling, Peter (Foundation Tera-Care (CH)) ; Garolfi, Luca
A comprehensive and detailed definition of the requirements specification, knowledge and analysis of the foreseeable use cases, use general and case related safety requirements and consideration of technical feasibility are indispensable prerequisites for the development and manufacture of a research or production device. [...]
CERN-ACC-NOTE-2025-0022 ; NIMMS-Note-0026. - 2025 - 35.
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2025-12-12
16:58
DESIGN OF A SUPERFERRIC DIPOLE FOR HELICS / Korchevnyuk, Vera ; Bottura, Luca (CERN)
This report presents the design of a superferric dipole magnet for the Helium Light Ion Compact Synchrotron (HeLICS) [...]
CERN-ACC-NOTE-2025-0021. - 2025
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2025-10-07
16:20
RF Measurement and Tuning of the Linac4 Spare RFQ / Millar, Lee (CERN) ; Grudiev, Alexej (CERN)
The first radio-frequency (RF) accelerating structure in Linac4 is a 352.2 MHz, three-metre-long radio-frequency quadrupole (RFQ) that bunches and accelerates the 45 keV H- beam from the ion source to an energy of 3 MeV. [...]
CERN-ACC-NOTE-2025-0020. - 2025 - 86.
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2025-10-01
16:33
Design and Optimization of RF Structures for the CLIC Main Beam Injector Linacs / Kurtulus, Adnan ; Doebert, Steffen (CERN) ; Grudiev, Alexej (CERN) ; Latina, Andrea (CERN) ; Zhao, Yongke
The design of the CLIC main beam injector complex linacs necessitates high-gradient, traveling-wave accelerating structures engineered to withstand substantial beam-loading effects due to the elevated beam current and demanding acceleration requirements of CLIC operations [...]
CERN-ACC-2025-0004 ; CLIC-Note-1201. - 2025 - 14.
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2025-09-26
15:15
Chamonix Workshop 2025 Summary / Carra, Federico (CERN) ; Charitonidis, Nikolaos (CERN) ; Papotti, Giulia (CERN) ; Sterbini, Guido (CERN)
The Chamonix Workshop 2025 took place from 27 to 30 January 2025 in the "Majestic" conference centre in Chamonix. [...]
CERN-ACC-NOTE-2025-0019. - 2025 - 68.
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2025-09-26
12:45
Shutter-type multi-point optical alignment using a Structured Laser Beam in vacuum / Niewiem, Witold Grzegorz (ETH, Zurich (main) ; CERN) ; Figura, Sebastian Antoni (CERN) ; Dusek, Martin (Liberec Tech. U. ; CERN) ; Mergelkuhl, Dirk (CERN) ; Gayde, Jean-Christophe (CERN) ; Wieser, Andreas (ETH, Zurich (main))
This paper presents an alignment concept employing a Structured Laser Beam (SLB) for offset measurements over a 140 m distance. The prototype consists of an SLB generator and three measurement stations within a vacuum system. [...]
CERN-ACC-2025-0003.- Geneva : CERN, 2025 - 19 p. - Published in : JINST 20 (2025) P07001 Fulltext: PDF;

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2025-09-18
10:42
Experimental results at the C.E.R.N. Photoemission Laboratory with co-deposition photocathodes in the frame of the CLIC studies / Chevallay, E.
CTF3-Note-104. - 2012 - 23.
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2025-09-16
10:14
Cable Transfer Function Measurements and Bunch Length Analysis in the SPS / Flowerdew, Jake ; Intelisano, Leandro ; Lasheen, Alexandre (CERN) ; Papotti, Giulia (CERN)
This note details the cable transfer function measurements taken in 2024 and 2025 for the longitudinal beam observation system in the SPS. [...]
CERN-ACC-NOTE-2025-0018. - 2025 - 15.
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