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Beam coupling impedance of the main extraction kickers in the CERN PS
/ Neroni, M (CERN ; U. Rome La Sapienza (main)) ; Barnes, M J (CERN) ; Lasheen, A (CERN) ; Mostacci, A (U. Rome La Sapienza (main)) ; Popovic, B (Argonne) ; Vollinger, C (CERN)
In view of the High Luminosity (HL) upgrade of the LHC, thebeam intensity must be doubled in the injector chain. To performreliable beam dynamics simulations, the beam coupling impedance inthe injectors, such as the Proton Synchrotron (PS), must be followedclosely by including all contributing elements into the impedancemodel. [...]
2024 - 12 p.
- Published in : JINST 19 (2024) T08001
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.T08001
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2.
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High voltage consolidation of the temperature measurement channels of the LHC superconducting current leads
/ Trikoupis, N (CERN) ; Casas-Cubillos, J (CERN) ; Bustamante, E (CERN)
Recurrent dielectric breakdowns on the cryogenics instrumentation during the CERN LHC Electrical Quality Assurance (ELQA) campaigns led to an investigation of their root causes. During the CERN Long Shutdown 2 (LS2), several weaknesses were identified like floating wires or cable screens, cabling non-conformities, connector assembly issues, and weakness of the electronic conditioning cards. [...]
2023 - 8 p.
- Published in : JINST 18 (2023) C02010
In : Topical Workshop on Electronics for Particle Physics 2022 (TWEPP 2022), Bergen, Norway, 19 - 23 Sep 2022, pp.C02010
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3.
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Parameter space for the magnetic design of Nested Magnets in the FCC-ee arc cell
/ Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne, LPAP) ; Thabuis, Adrien (CERN) ; Auchmann, Bernhard (PSI, SLS) ; Kosse, Jaap (PSI, SLS) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne, LPAP) ; Koratzinos, Michael (CERN) ; Seidel, Mike (Ecole Polytechnique, Lausanne, LPAP) ; Tomas, Rogelio (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne, LPAP)
The Future Circular Collider (FCC-ee) is designed to explore the Z and W± bosons, along with the Higgs boson and top quark, achieving exceptionally high luminosity. In order to minimize the energy lost per turn due to Synchrotron Radiation (SR) we explore the use of Nested Magnets (NMs) into the arcs cell. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR11
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR11
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5.
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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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Impact of second-order chromaticity on the Schottky spectra of bunched beam
/ Lasocha, Kacper (CERN) ; Alves, Diogo (CERN) ; Lannoy, Christophe (CERN ; Ecole Polytechnique, Lausanne) ; Mounet, Nicolas (CERN)
Observation of Schottky signals provides information on important beam and machine parameters, such as transverse emittance, betatron tune, and first-order chromaticity. However, the so-far developed theory of Schottky spectra does not include the impact of the higher-order chromaticity, known to be non-negligible in the case of the Large Hadron Collider (LHC). [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPG30
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG30
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The design and electromagnetic analyses of the new elements in the FCC-ee IR vacuum chamber
/ Novokhatski, Alexander (SLAC) ; Di Pasquale, Enrico (Frascati) ; Fransesini, Francesco (Frascati) ; Seeman, John (SLAC) ; André, Kévin (CERN) ; Boscolo, Manuela (Frascati) ; Lauciani, Stefano (Frascati)
High currents of bunched electron and positron beams plan to be used in the proposed FCC-ee collider to achieve a high luminosity. Naturally, the impedance of the interaction region of the FCC must be as small as possible. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR18
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR18
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8.
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Characterization of Fragmented Ultrahigh-Energy Heavy Ion Beam and Its Effects on Electronics Single-Event Effect Testing
/ Barbero, Mario Sacristán (CERN ; IES, Montpellier) ; Slipukhin, Ivan (CERN ; IES, Montpellier) ; Cecchetto, Matteo (CERN) ; Prelipcean, Daniel (CERN) ; Aguiar, Ygor (CERN) ; Bilko, Kacper (CERN) ; Emriskova, Natalia (CERN) ; Waets, Andreas (CERN) ; Coronetti, Andrea (CERN) ; Kastriotou, Maria (Rutherford Appleton Laboratory) et al.
Ultrahigh-energy (UHE) (>5 GeV/n) heavy ion beams exhibit different properties when compared to standard and high-energy ion beams. Most notably, fragmentation is a fundamental feature of the beam that may have important implications for electronics testing given the ultrahigh energies and, hence, ranges, preserved by the fragments. [...]
2024 - 8 p.
- Published in : IEEE Trans. Nucl. Sci.
Fulltext: PDF;
In : Conference on Radiation and its Effects on Components and Systems (RADECS 2023), Toulouse, France, 25 - 29 Sep 2023, pp.1557-1564
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9.
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First comparison studies in dynamic aperture for nested magnets and baseline lattice in the FCC-ee
/ García-Jaimes, C (Ecole Polytechnique, Lausanne, LPAP) ; Pieloni, T (Ecole Polytechnique, Lausanne, LPAP) ; van Riesen-Haupt, L (Ecole Polytechnique, Lausanne, LPAP) ; Seidel, M (Ecole Polytechnique, Lausanne, LPAP) ; Tomás, R (CERN)
A significant project such as the FCC-ee (with 91.17 km circumference) entails numerous challenges to ensure the stability and performance of the machine. In the pursuit of contributing to the improvement of energy consumption during its operation, the exploration of Nested Magnets (NMs) as a means to reduce synchrotron radiation has been undertaken. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR12
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR12
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Transient finite-element simulations of fast-ramping muon-collider magnets
/ Moll, Dominik (Darmstadt, Tech. U.) ; Boattini, Fulvio (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Christmann, Jan-Magnus (Darmstadt, Tech. U.) ; D'Angelo, Laura (Darmstadt, Tech. U.) ; Bottura, Luca (CERN) ; Breschi, Marco (Bologna U.)
Conceptual studies for a muon collider identify fast-ramping magnets as a major design challenge. Rise rates of more than 1 T/ms are attainable with normal-conducting magnets, incorporating iron yokes to make sure that stored magnetic energies and inductances stay below reasonable thresholds. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPR54
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPR54
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