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Accelerator Physics

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2024-10-24
07:32
New accelerator designs: NIMMS / Vretenar, Maurizio (CERN) ; Benedetto, Elena
Purpose This article summarises the presentation given at the “Hadrontherapy: status and perspectives” event. Methods Structure, methodology, and objectives of the Next Ion Medical Machine Study collaboration are introduced. Its four Work Packages are: small synchrotrons for particle therapy, curved superconducting magnets for synchrotrons and gantries, superconducting gantry design, and high-frequency ion linacs. [...]
2024 - 11 p. - Published in : Health Technol. 14 (2024) 945-955 Fulltext: PDF;

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2024-10-17
10:48
Improved CERN LHC layout and aperture models / Lampaki, Syrmatenia
Aperture models are of fundamental importance to design machine optics configurations and predict machine performance [...]
CERN-THESIS-2024-195 - Thessaloniki , Greece : Aristotle University of Thessaloniki, 2024-06-21 - 88.


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2024-10-16
09:18
The status of the FCC-ee optics tuning / van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; Franchi, Andrea (ESRF, Grenoble) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Chance, Antoine (Paris, CEA) ; Dalena, Barbara (Paris, CEA) ; Järmyr Eriksson, Carl (CERN) ; Carli, Christian (CERN) ; Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne) ; Shatilov, Dmitry (CERN) ; Musa, Elaf (DESY) et al.
With a circumference of approximately 91 km, the Future Circular electron-positron Collider, FCC-ee, aims for unprecedented luminosities at beam energies from 45.6 to 182.5 GeV. A major challenge is reaching its design performance in the presence of magnet misalignments and field errors. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR02 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR02

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2024-10-16
09:18
Review of MAD-X for FCC-ee studies / Simon, Guillaume (CERN ; IJCLab, Orsay) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; De Maria, Riccardo (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
The design of the electron-positron Future Circular Collider (FCC-ee) challenges the requirements on optics codes (like MAD-X) in terms of accuracy, consistency, and performance. Traditionally, MAD-X uses a transport formalism by expanding the transfer map about the origin up to second order to compute optics functions and synchrotron radiation integrals in the TWISS and EMIT modules. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR22 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR22

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2024-10-16
09:18
First FCC-ee lattice designs with Nested Magnets / Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne, LPAP) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne, LPAP) ; Seidel, Mike (Ecole Polytechnique, Lausanne, LPAP) ; Tomas, Rogelio (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne, LPAP)
The Future Circular Electron-Positron Collider (FCC-ee) represents a cutting-edge particle physics facility designed to further investigate the Z, W± and Higgs boson in addition to the top quark. The implementation of Nested Magnets (NMs) in the FCC-ee arc cells would maintain high luminosity and reduce its energy consumption. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR10 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR10

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2024-10-15
06:06
Status of the synchrotron radiation studies in the interaction region of the FCC-ee / André, Kévin (CERN) ; Holzer, Bernhard (CERN) ; Boscolo, Manuela (Frascati)
The FCC-ee is a proposed high-luminosity circular electron-positron collider which will have beam energies spanning from 45.6 to 182.5 GeV, and will radiate up to 50 MW of synchrotron radiation power per beam. The lattice design upstream of the interaction point is based on weak dipoles and long straight sections combined with a 30 mrad crossing angle. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR09 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR09

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2024-10-15
06:06
Resonant spin depolarization at the test facility KARA: overview of recent efforts / Blomley, Edmund (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) ; Härer, B (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe)
The Karlsruhe research accelerator KARA offers a setup to measure the beam energy with resonant spin depolarization. The depolarization is excited by the stripline kickers of the bunch-by-bunch feedback system and the resonant frequency is measured via change in Touschek lifetime. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPG51 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG51

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2024-10-15
06:06
High-resolution bunch profile measurements for enhanced longitudinal beam diagnostics / Brischetto, Ylenia (CERN) ; Timko, Helga (CERN) ; Argyropoulos, Theodoros (CERN)
Efficient operation of the Large Hadron Collider (LHC) relies on accurate longitudinal beam measurements to diagnose beam instabilities and verify the correctness of bunch-shaping techniques. To achieve this goal, a diagnostic system was developed to perform high-resolution measurements of longitudinal bunch profiles. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPG23 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG23

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2024-10-11
07:16
An Efficient Optimisation of a Burst Mode-Operated Fabry-Perot Cavity for Compton Light Sources / Mușat, Vlad (CERN ; Oxford U.) ; Cormier, Eric (LP2N, Bordeaux) ; Granados, Eduardo (CERN) ; Latina, Andrea (CERN) ; Santarelli, Giorgio (LP2N, Bordeaux)
The burst mode operation of a Fabry-Perot cavity (FPC) allows for the generation of a high-intensity photon beam in inverse Compton scattering (ICS) sources. The geometry and burst mode parameters of the FPC can be optimised to maximise the scattered photon flux. [...]
2024 - 4 p. - Published in : JACoW FLS 2023 (2024) TU1C1 Fulltext: PDF;
In : ICFA Advanced Beam Dynamics Workshop on Future Light Sources, Lucerne, Switzerland, 28 Aug - 1 Sep 2023, pp.TU1C1

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2024-10-11
07:16
ATF2-3 hardware upgrade and new experimental results to maximize luminosity potential of linear colliders / Faus-Golfe, Angeles (IJCLab, Orsay) ; Aryshev, Alexander (KEK, Tsukuba) ; Lyapin, Alexey (Oxford U.) ; Kruchinin, Konstantin (KEK, Tsukuba) ; Terunuma, Nobuhiro (KEK, Tsukuba) ; Fuster-Martinez, Nuria (Valencia U., IFIC) ; Burrows, Philip (Oxford U.) ; Mazzoni, Stefano (CERN) ; Okugi, Toshiyuki (KEK, Tsukuba) /ATF2 Collaboration
The ATF2-3 beamline is the only facility in the world for testing the Final Focus Beamline of linear colliders and is essential for the ILC and the CLIC projects. A vertical electron beam size of 41 nm (within 10% of the target), a closed-loop intra-bunch feedback of latency 133 ns, and direct stabilization of the beam position at the Interaction Point to 41 nm (limited by IP BPM resolution) have all been achieved at ATF2. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) TUPC04 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC04

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