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Title A Comprehensive Study of the Microwave Instability
  • A. Blednykh, B. Bacha, G. Bassipresenter, O.V. Chubar, M.S. Rakitin, V.V. Smaluk, M. Zhernenkov
    BNL, Upton, Long Island, New York, USA
Abstract Several instability thresholds and special waveform beam pattern have been observed during measurements of the horizontal beam size change vs single bunch current by the synchrotron light monitor (SLM) camera installed in a low dispersion area of the NSLS-II storage ring. The electron beam energy spread from In-Vacuum Undulator (IVU) of the Soft Matter Interfaces (SMI) beam line confirmed the microwave beam pattern behavior as a current dependent effect. The numerically obtained total longitudinal wakepotential by the GdfidL code allowed us to compare the measured results with particle tracking simulations using the SPACE code. The instability thresholds behavior at different RF voltages are in some sort of overarching agreement.
Funding Work supported by DOE contract DE-SC0012704
Paper download WEPIK117.PDF [0.529 MB / 3 pages]
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Conference IPAC2017, Copenhagen, Denmark
Series International Particle Accelerator Conference (8th)
Proceedings Link to full IPAC2017 Proccedings
Session Posters Wednesday 2
Date 17-May-17   16:00–18:00
Main Classification 05 Beam Dynamics and Electromagnetic Fields
Sub Classification D04 Beam Coupling Impedance - Theory, Simulations, Measurements, Code Developments
Keywords lattice, simulation, storage-ring, electron, vacuum
Publisher JACoW, Geneva, Switzerland
Editors Volker RW Schaa (GSI, Darmstadt, Germany); Gianluigi Arduini (CERN, Geneva, Switzerland); Juliana Pranke (ESS, Lund, Sweden); Mike Seidel (PSI, Villigen, Switzerland); Mats Lindroos (ESS, Lund, Sweden)
ISBN 978-3-95450-182-3
Published May 2017
Copyright © 2017 by JACoW, Geneva, Switzerland     CC-BY Creative Commons License
cc Creative Commons Attribution 3.0