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Real-time processing of longitudinal Schottky signals in CERN’s antiproton chain
/ Niccolini, Marco (CERN) ; Barrientos, Diego (CERN) ; Suminski, Maciej (CERN) ; Angoletta, Maria Elena (CERN) ; Soderen, Martin (CERN) ; Freyermuth, Pierre (CERN) ; Brischetto, Ylenia (CERN)
A low-latency, real-time diagnostic system for the analysis of longitudinal Schottky signals in CERN’s antiproton chain has been developed. The system, installed in CERN’s Antiproton Decelerator (AD), processes the combined output of two low-noise, wideband AC beam transformers. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPG27
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG27
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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 PSI positron production project
/ Vallis, Nicolas (PSI, Villigen ; Ecole Polytechnique, Lausanne) ; Craievich, Paolo (PSI, Villigen) ; Schaer, Mattia (PSI, Villigen) ; Zennaro, Riccardo (PSI, Villigen) ; Auchmann, Bernhard (PSI, Villigen) ; Besana, Maria Ilaria (PSI, Villigen) ; Duda, Michal (PSI, Villigen) ; Fortunati, Reto (PSI, Villigen) ; Garcia Rodrigues, Henrique (PSI, Villigen) ; Hauenstein, Dominique (PSI, Villigen) et al.
The PSI Positron Production experiment, known as $\text{P}^{3}$ or $\textit{P-cubed}$, is a proof-of-principle positron source and capture system that can greatly improve the state-of-the-art positron yield. The $\text{P}^{3}$ project is led by the Paul Scherrer Institute in Switzerland, and addresses the long-standing challenge faced by conventional injector facilities to generate, capture, and damp the emittance of high-current positron beam, which is a major limiting factor for the feasibility of future electron-positron colliders. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC50
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC50
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Numerical methods for emittance computation from luminosity
/ Rufolo, Matteo (Dalle Molle Inst. AI Studies, Lugano) ; Fornara, Andrea (Manchester U. ; CERN) ; Lamb, Elleanor (Ecole Polytechnique, Lausanne ; CERN) ; Sterbini, Guido (CERN) ; Giacomel, Lorenzo (CERN)
The beam transverse emittances play a critical role in high-energy colliders. Various measurement techniques are employed to measure them. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) MOPC19
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.MOPC19
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Studies on the Effect of Beam-Coupling Impedance on Schottky Spectra of Bunched Beams
/ Lannoy, Christophe (CERN ; EPFL, Lausanne, FSL) ; Alves, Diogo (CERN) ; Łasocha, Kacper (CERN) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
Schottky monitors can be used for non-invasive beam diagnostics to estimate various bunch characteristics, such as tune, chromaticity, bunch profile or synchrotron frequency distribution. However, collective effects, in particular beam-coupling impedance, can significantly affect Schottky spectra when large bunch charges are involved. [...]
2024 - 4 p.
- Published in : JACoW HB 2023 (2024) 595-598
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.595-598
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Experimental Verification of the Coherent Diffraction Radiation Measurement Method for Longitudinal Electron Beam Characteristics
/ Panaś, Roman (NSRC, Nakhon Ratchasima) ; Curcio, Alessandro (Frascati) ; Łasocha, Kacper (CERN) ; Wawrzyniak, Adriana (NSRC, Nakhon Ratchasima)
This paper presents a natural extension of prior theoretical investigations regarding the utilization of coherent diffraction radiation for assessing longitudinal characteristics of electron beams at Solaris. The study focuses on the measurement results obtained at the linac injector of the Solaris synchrotron and their analysis through a theoretical model. [...]
2023 - 4 p.
- Published in : JACoW IBIC 2023 (2023) MOP007
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.MOP007
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Statistical Properties of Schottky Spectra
/ Lannoy, Christophe (CERN ; EPFL, Lausanne, FSL) ; Alves, Diogo (CERN) ; Łasocha, Kacper (CERN) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (EPFL, Lausanne, FSL)
Schottky signals are used for non-invasive beam diagnostics as they contain information on various beam and machine parameters. The instantaneous Schottky signal is, however, only a single realisation of a random process, implicitly depending on the discrete distribution of synchrotron and betatron amplitudes and phases among the particles. [...]
2023 - 5 p.
- Published in : JACoW IBIC 2023 (2023) WEP035
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.WEP035
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