CERN Accelerating science

All CERN Accelerators documents

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2024-06-15
11:08
Optimizing Resonance Driving Terms Using MAD-NG Parametric Maps / Deniau, Laurent (CERN) ; Kostoglou, Sofia (CERN) ; Maclean, Ewen (CERN) ; Paraschou, Konstantinos (CERN) ; Persson, Tobias (CERN) ; Tomás García, Rogelio (CERN)
In 2023, a review of the LHC octupolar resonance driving terms at injection was carried out, motivated by two observations: (i) unwanted losses during the injection process with strongly powered octupoles and (ii) an expected reduction in emittance growth from e-cloud effects in simulations with weaker octupolar resonances. The MAD-NG code was used to simultaneously optimise the main octupolar resonances: 4Qx, 4Qy, and 2Qx-2Qy by adjusting 16 quadrupole families and 16 octupole families, for a total of 32 parameters. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 483-486 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.483-486

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2024-06-15
11:08
Analysis Tools for Numerical Simulations of Dynamic Aperture with Xsuite / Pugnat, Thomas (CERN) ; Di Croce, Davide (Ecole Polytechnique, Lausanne) ; Giovannozzi, Massimo (CERN) ; Van der Veken, Frederik (CERN)
Recently, several efforts have been made at CERN to develop a new tracking tool, Xsuite, which is intended to be the successor to SixTrack. In this framework, analysis tools have also been prepared with the goal of providing advanced post-processing techniques for the interpretation of dynamic aperture simulations. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 551-554 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.551-554

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2024-06-15
11:08
Challenges of Target and Irradiation Diagnostics of the IFMIF-DONES Facility / Torregrosa, Claudio (Granada U.) ; Arbeiter, Frederik (KIT, Karlsruhe) ; Becerril-Jarque, Santiago ; Brenneis, Bjoern (KIT, Karlsruhe) ; Buligins, Leonids (Salaspils, Nucl. Res. Ctr.) ; Castellanos, Jesus (Castilla-La Mancha U.) ; Chauvin, Nicolas (IRFU, Saclay) ; Fiore, Salvatore (CERN) ; Ibarra, Angel ; Jimenez-Rey, David (Madrid, CIEMAT) et al.
IFMIF-DONES will be a first-class scientific infrastructure consisting of an accelerator-driven neutron source delivering 1e17 n/s with a broad peak at 14 MeV. Such neutron flux will be created by impinging a continuous wave 125 mA, 40 MeV, 5 MW deuteron beam onto a liquid Li jet target, circulating at 15 m/s. [...]
2024 - 5 p. - Published in : JACoW HB 2023 (2024) WEC1C2 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.WEC1C2

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2024-06-15
11:08
Radiation Environment in the Large Hadron Collider During the 2022 Restart and Related RHA Implications / Biłko, Kacper (CERN ; Lab. Hubert Curien, St. Etienne) ; García Alía, Rubén (CERN) ; Aguiar, Ygor (CERN) ; Danzeca, Salvatore (CERN) ; Di Francesca, Diego (CERN) ; Gilardoni, Simone (CERN) ; Girard, Sylvain (ICJ, Lyon ; IUF, Paris) ; Ricci, Daniel (CERN) ; Sebban, Marc (Lab. Hubert Curien, St. Etienne) ; Uznanski, Slawosz (CERN)
In this work, we present the radiation environment of the large hadron collider (LHC), focusing on the year 2022, the first after the Long Shutdown 2 (LS2) (2019–2021). We highlight the most prominent radiation-level changes with respect to the 2018 operation, commenting on the related Radiation Hardness Assurance implications. [...]
2024 - 11 p. - Published in : IEEE Trans. Nucl. Sci. 71 (2024) 607-617 Fulltext: PDF;

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2024-06-15
11:07
Extraction of LHC Beam Parameters from Schottky Signals / Łasocha, Kacper (CERN) ; Alves, Diogo (CERN) ; Lannoy, Christophe (CERN ; Ecole Polytechnique, Lausanne) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
Analysis of Schottky signals provides rich insights into the dynamics of a hadron beam, with well-established methods of deriving the betatron tune and machine chromaticity. In this contribution, we will report on recent developments in the analysis and understanding of the signals measured at the Large Hadron Collider during proton and Pb⁸²⁺ fills. [...]
2024 - 7 p. - Published in : JACoW HB 2023 (2024) 382-388 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.382-388

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2024-06-15
11:07
The CompactLight Design Study / D'Auria, G (Sincrotrone Trieste) ; Adli, E (Oslo U.) ; Aicheler, M (Helsinki Inst. of Phys.) ; Aksoy, A (Ankara U.) ; Alesini, D (Frascati) ; Apsimon, R (Daresbury ; Lancaster U.) ; Arnsberg, J (KIT, Karlsruhe) ; Auchettl, R (ASP, Melbourne) ; Bainbridge, A (Daresbury) ; Balazs, K (CERN) et al.
CompactLight is a Design Study funded by the European Union under theHorizon 2020 research and innovation funding programme, with Grant Agreement No. 777431.CompactLight was conducted by an International Collaboration of 23 internationallaboratories and academic institutions, three private companies, and five third parties.The project, which started in January 2018 with a duration of 48 months, aimed to designan innovative, compact, and cost-effective hard X-ray FEL facility complemented by asoft X-ray source to pave the road for future compact accelerator-based facilities. [...]
2024 - 208 p. - Published in : Eur. Phys. J. Spec. Top. 233 (2024) 1-208 Fulltext: PDF;

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2024-06-15
11:07
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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2024-06-15
11:07
Simulations of a cryogenic, buffer-gas filled Paul trap for low-emittance ion bunches / Lechner, S (CERN ; Vienna, Tech. U. ; McGill U.) ; Sels, S (CERN) ; Belosevic, I (TRIUMF) ; Buchinger, F (McGill U.) ; Fischer, P (Greifswald U.) ; Kanitz, C (Erlangen - Nuremberg U.) ; Lagaki, V (CERN ; Greifswald U.) ; Maier, F M (CERN ; Greifswald U.) ; Plattner, P (CERN ; Innsbruck U.) ; Schweikhard, L (Greifswald U.) et al.
Many experiments with pulsed ion beams benefit from or even require ion bunches with both small temporal width as well as small energy spread. To achieve optimal ion-beam preparation, a buffer-gas filled cryogenic Paul trap is being developed in the context of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS). [...]
2024 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1065 (2024) 169471 Fulltext: PDF;

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2024-06-15
11:07
Experimental Investigations on the High-Intensity Effects Near the Half-Integer Resonance in the PSB / Prebibaj, Tirsi (CERN) ; Antoniou, Fanouria (CERN) ; Asvesta, Foteini (CERN) ; Bartosik, Hannes (CERN) ; Franchetti, Giuliano (Darmstadt, GSI)
Space charge effects are the main limitation for the brightness performance of the Proton Synchrotron Booster (PSB) at CERN. Following the upgrades of the LHC Injectors Upgrade (LIU) project, the PSB delivered unprecedented brightness even exceeding the projected target parameters. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 499-502 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.499-502

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2024-06-15
11:07
The Tracking Code RF-Track and Its Application / Latina, Andrea (CERN)
RF-Track is a CERN-developed particle tracking code that can simulate the generation, acceleration, and tracking of beams of any species through an entire accelerator, both in realistic field maps and conventional elements. RF-Track includes a large set of single-particle and collective effects: space-charge, beam-beam, beam loading in standing and travelling wave structures, short- and long-range wakefield effects, synchrotron radiation emission, multiple Coulomb scattering in materials, and particle lifetime. [...]
2024 - 4 p. - Published in : JACoW HB 2023 (2024) 245-248 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.245-248

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