CERN Accelerating science

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Injection and capture of antiprotons in a Penning–Malmberg trap using a drift tube accelerator and degrader foil / Amsler, C. (Stefan Meyer Inst. Subatomare Phys.) ; Breuker, H. (Wako, RIKEN) ; Bumbar, M. (CERN) ; Chesnevskaya, S. (Stefan Meyer Inst. Subatomare Phys.) ; Costantini, G. (Brescia U. ; INFN, Pavia) ; Ferragut, R. (INFN, Milan ; Padua U. ; INFN, Padua) ; Giammarchi, M. (Padua U. ; INFN, Padua) ; Gligorova, A. (Stefan Meyer Inst. Subatomare Phys.) ; Gosta, G. (Brescia U. ; INFN, Pavia) ; Higaki, H. (Hiroshima U.) et al.
The Antiproton Decelerator (AD) at CERN provides antiproton bunches with a kinetic energy of 5.3 MeV. The Extra-Low ENergy Antiproton ring at CERN, commissioned at the AD in 2018, now supplies a bunch of electron-cooled antiprotons at a fixed energy of 100 keV. [...]
arXiv:2403.09268.- 2024-06-12 - 22 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169529 Fulltext: PDF;

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Detailed Magnetic Model Simulations of the H− Injection Chicane Magnets for the CERN PS Booster Upgrade, including Eddy Currents, and Influence on Beam Dynamics / Benedetto, Elena (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN) ; Carli, Christian (CERN) ; Martini, Michel (CERN) ; Forte, Vincenzo (Clermont-Ferrand U. ; CERN)
The CERN PS Booster will be upgraded with an H^{−} injection system. The chicane magnets for the injection bump ramp-down in 5 ms and generate eddy currents in the inconel vacuum chamber which perturb the homogeneity of the magnetic field. [...]
2014 - 3 p. - Published in : 10.18429/JACoW-IPAC2014-TUPRI027 Fulltext: PDF; External link: Full-text at JACoW Server
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPRI027

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Performance of the CERN Proton Synchrotron internal dump: numerical simulation studies and comparison with beam measurements / Niang, S (CERN) ; Pugnat, T (CERN) ; Domange, D (Brussels U.) ; Esposito, L S (CERN) ; Giovannozzi, M (CERN) ; Gnacadja, E (Brussels U.) ; Hernalsteens, C (CERN) ; Huschauer, A (CERN) ; Tesse, R (Brussels U.)
In the framework of the LHC Injector Upgrade project, a newinternal dump for the CERN Proton Synchrotron (PS) ring has beendesigned, installed, and successfully commissioned. This device isdesigned to move rapidly into the beam and stop charged particlesover several thousand turns to provide protection to PS hardwareagainst beam-induced damage. [...]
2024 - 21 p. - Published in : JINST 19 (2024) T06002 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T06002

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Recent advances in the CERN PS impedance model and instability simulations following the LHC Injectors Upgrade project / Joly, S (Rome U. ; CERN) ; Oeftiger, A (Darmstadt, GSI) ; Iadarola, G (CERN) ; Zannini, C (CERN) ; Migliorati, M (Rome U.) ; Mounet, N (CERN) ; Salvant, B (CERN)
Transverse instability growth rates in the CERN ProtonSynchrotron (PS) are studied thanks to the recently updatedimpedance model of the machine. Using this model, macroparticletracking simulations were performed with a new method well-suitedfor the slicing of short wakes, which achieves comparableperformance to the originally implemented method while reducing therequired number of slices by a factor of 5 to 10. [...]
2024 - 24 p. - Published in : JINST 19 (2024) P04018 Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.P04018

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Linac4 Source and Low Energy Experience and Challenges / Sargsyan, Edgar (CERN) ; Bellodi, Giulia (CERN) ; Di Lorenzo, Francesco (CERN) ; Etxebarria Erdoiza, Jone (CERN) ; Lallement, Jean-Baptiste (CERN) ; Lombardi, Alessandra (CERN) ; O'Neil, Michael (CERN)
At the end of Long Shutdown 2 (LS2), in 2020 Linac4 became the new injector of CERN’s proton accelerator complex. The previous version of the Linac4 H⁻ ion source (IS03), produced an operational pulsed peak beam current of 35 mA, resulting in 27 mA after the Radio-Frequency Quadrupole (RFQ). [...]
2024 - 7 p. - Published in : JACoW HB: 2023 (2024) , pp. WEA4I2
Fulltext: PDF;
In : 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.WEA4I2

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Injector Availability Report 2023 / Felsberger, Lukas (CERN) ; Asko, Anti (CERN) ; Di Giovanni, Gian Piero (CERN) ; Heron, Jack (CERN) ; Mikulec, Bettina (CERN) ; Uythoven, Jan (CERN) ; Wollmann, Daniel (CERN)
This document summarises the injector availability during 2023 [...]
- 2024. - 35 p.
Full text

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Loss of Landau damping in double harmonic RF systems / Intelisano, Leandro
Landau damping is a natural stabilization mechanism to mitigate coherent beam instabilities [...]
CERN-THESIS-2023-396 - 132 p.

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Modelling of the PS Beam Phase and Radial Feedback Loops / Naumenko, Oleksandr (Hamburg University (DE)) ; Lasheen, Alexandre (CERN)
This document describes the current models for the beam phase and the radial feedback loops of the analogue PS longitudinal beam control. [...]
- 2024. - 18 p.
Full text

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Experimental optimisation of CERN 750MHz proton Radio-Frequency-Quadrupole for Surface Analysis / Marchi, Mariangela
The present thesis deals with the experimental optimisation of an accelerating structure named ELISA-RFQ [...]
CERN-THESIS-2023-384 - 60 p.

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Evaluation of Different Methods for Runtime Optimization of Longitudinal Phase Space Tomography / Abreu Figueiredo, Bernardo
In order to measure the parameters, and therefore the quality, of the particle beam in the CERN synchrotrons, various methods are used for beam diagnostics [...]
CERN-THESIS-2024-033 - 116 p.

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