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

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...

Full description

Saved in:
Bibliographic Details
Published in2009 MIXDES-16th International Conference Mixed Design of Integrated Circuits & Systems pp. 85 - 88
Main Authors Przygoda, K., Pozniak, T., Napieralski, A., Grecki, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2009
Subjects
Automatic control
Electron beams
Free electron lasers
Laser modes
Linear accelerators
Lorentz covariance
Lorentz force detuning compensation
Piezoelectric actuators
Radio frequency
Resonance
Stability
superconducting resonance cavity
Online AccessGet full text

Cover

More Information
Summary: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).
ISBN:1424447984
9781424447985