CERN Accelerating science

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1.
Bead-Pull Method for transverse impedance measurements / Calzone, Eleonora ; Zannini, Carlo (CERN) ; Antuono, Chiara (Sapienza Universita e INFN, Roma I (IT)) ; Sito, Leonardo (Universita degli Studi di Napoli Federico II (IT))
Beam Coupling Impedance represents a serious issue in High-Energy particle accelerators [...]
CERN-STUDENTS-Note-2023-083.
- 2023
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2.
A Novel Method for Transverse Beam-Coupling Impedance Measurements in Particle Accelerator Devices Using the Bead-Pull Method / Antuono, Chiara (U. Rome La Sapienza (main) ; CERN) ; Sito, Leonardo (CERN ; Naples U.) ; Calzone, Eleonora (U. Rome La Sapienza (main) ; CERN) ; el Dali, D (CERN) ; Migliorati, Mauro (CERN ; U. Rome La Sapienza (main)) ; Mostacci, Andrea (CERN ; U. Rome La Sapienza (main)) ; Fienga, Francesco (CERN ; Naples U.) ; Marrazzo, Vincenzo Romano (CERN ; Naples U.) ; Breglio, Giovanni (CERN ; Naples U.) ; Rumolo, G (CERN) et al.
In high-energy particle accelerators, circulating particle beams with high intensity interact electromagnetically with their surroundings (i.e., metallic vacuum chambers of various geometries). These electromagnetic interactions, which are typically described through the concept of beam-coupling impedance, can represent a serious issue in terms of stability of the particle beam and heating on the accelerator structures. [...]
2024 - 9 p. - Published in : IEEE Trans. Instrum. Meas. 73 (2024) 8005209 Fulltext: PDF;
3.
Numerical Calibration of the Bead-Pull Setup for Beam Coupling Impedance Evaluation / El Dali, Dalia Mahmoud Fouda (CERN) ; De Michele, Giovanni (ADAM, Geneva) ; Fanella, Stefano (ADAM, Geneva) ; Métral, Elias (CERN) ; Zannini, Carlo (CERN)
The bead-pull method is a commonly used electromagnetic field measurement technique exploited to tune a radiofrequency cavity to achieve design specifications. The frequency of a resonant cavity is perturbed by inserting a metallic or dielectric bead. [...]
2022 - 3 p. - Published in : JACoW IPAC 2022 (2022) 607-609 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.607-609
4.
Numerical calibration of the bead-pull measurement setup for beam coupling impedance evaluation / El Dali, Dalia
To identify the accelerator structures that are contributing to performance limitations and execute mitigation techniques, a precise estimate of the beam coupling impedance is required [...]
CERN-THESIS-2022-189 -

5.
Bead-Pull Measurement Method and Tuning of a Prototype CLIC Crab Cavity / Wegner, Rolf (CERN) ; Wuensch, Walter (CERN) ; Burt, Graeme (Lancaster U.) ; Woolley, Benjamin (Lancaster U.)
A bead-pull method has been developed which measures in a single bead passage the amplitude and phase advance of deflecting mode travelling wave structures. This bead-pull method has been applied to measure and tune a Lancaster University-designed prototype crab cavity for CLIC. [...]
CERN-ACC-2014-404.- 2014 - 3 p. - Published in : (2014) , pp. MOPP035 Published version from JACoW: PDF; External link: JACoW
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.MOPP035
6.
RF Bead Pull Measurements of the DQW / Jaume, Guillaume (CERN)
This report was written within the framework of the CERN Summer Student Program. [...]
CERN-STUDENTS-Note-2015-044.
- 2015
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7.
Bead-Pull measurements techniques and Multipole components of DQW crab-cavity / Gapais, Paul-Francois Rene
The main goal of this document is to characterize the electric and magnetic field with all their components and find the best way to do it. [...]
CERN-STUDENTS-Note-2018-144.
- 2018
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8.
Improved simulations in frequency domain of the Beam Coupling Impedance in particle accelerators / Antuono, Chiara
CERN-THESIS-2021-026 -

9.

CERN-PHOTO-8303507
© 1983-2022 CERN
RFQ-1 : a new pre-injector for Linac 1
The photo shows the bead-pull measurement set-up f [...]
Mar 1983
10.
ADVANCED ENGINEERING SIMULATION METHODS DEVELOPED IN THE EN-MME ENGINEERING UNIT / Carra, Federico (CERN) ; Accettura, Carlotta (Politecnico di Milano (IT)) ; Amrani, Anas (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Artoos, Kurt (CERN) ; Baudin, Lucie (CERN) ; Bertarelli, Alessandro (CERN) ; Capatina, Ofelia (CERN) ; Dassa, Luca (CERN) ; Garlasche, Marco (CERN) ; Giordanino, Laurene et al.
The Engineering Unit within EN-MME is in charge of CERN-wide advanced computations and simulations. [...]
CERN-ACC-NOTE-2022-0025.
- 2022. - 4 p.
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