NDLI: A novel approach for automatic control of piezoelectric elements used for Lorentz force detuning compensation

Content Provider	IEEE Xplore Digital Library
Author	Przygoda, K. Pozniak, T. Napieralski, A. Grecki, M.
Copyright Year	2009
Description	Author affiliation: Department of Microelectronics and Computer Science, Technical University of Lodz, Poland (Przygoda, K.; Pozniak, T.; Napieralski, A.) \|\| Group of Maschine Strahlkontrollen, Deutsches Elektronen-Synchrotron, Hamburg, Germany (Grecki, M.)
Abstract	Linear accelerators such as Free Electron Lasers (FELs) use superconducting (SC) resonant cavities to accelerate electron beam to high energies. TESLA type resonators are extremely sensitive to detuning induced by mechanical deformations — Lorentz force detuning (LFD), mainly due to the extremely high quality factor (Q) of the 1.3 GHz resonance mode, in the range of $10^{6}.$ The resulting modulation of a resonance frequency of the cavity makes power consumption and stability performances of the Low-Latency Radio Frequency (LLRF) control more critical. In order to minimize the RF control efforts and desired stabilities, the fast piezoelectric actuators with digital control systems are commonly used. The paper presents a novel approach for automatic control of piezoelectric actuators used for compensation of Lorentz force detuning, the practical application and carried out tests in accelerating module ACC6 in Free-Electron Laser in Hamburg (FLASH).
Starting Page	85
Ending Page	88
File Size	195813
Page Count	4
File Format	PDF
ISBN	9781424447985
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-25
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Tech Univ of Lodz
Subject Keyword	Lorentz covariance Lorentz force detuning compensation Stability Free electron lasers Linear accelerators Radio frequency Electron beams Piezoelectric actuators Automatic control Laser modes Resonance piezoelectric actuators superconducting resonance cavity
Content Type	Text
Resource Type	Article

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