Electrically actuated control system for the stabilization of synchrotron X-ray beams

Maintaining sub-micrometer stability of synchrotron X-ray beams is essential for the accuracy and repeatability of cutting-edge scientific and medical experiments. Traditional beamline stabilization systems, based on mechanical actuation of optical elements, are inherently limited in speed due to physical constraints like friction and inertia. This study introduces an innovative control strategy based on electrical actuation, directly influencing the bending magnet responsible for steering the beam into the beamline. This approach unlocks the potential for significantly higher control frequencies, comparable to those used for the electron beam stabilization. A laboratory-scale replica was developed to validate the feasibility and robustness of this method. A Proportional-Integral (PI) controller has been implemented to stabilize the electron beam and compensate for disturbances. Experimental results demonstrate that this strategy enables precise, high-frequency beam stabilization, even in the presence of typical disturbances such as position drift occurring during X-Ray Absorption Spectroscopy (XAS) experiments. This work lays the groundwork for next-generation control systems in synchrotron facilities, aiming to enhance performance and open the door to more advanced experimental capabilities.