Dortmund 2021 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 6: Diagnostics, Control and Instrumentation I

AKBP 6.7: Talk

Wednesday, March 17, 2021, 15:30–15:45, AKBPa

Extremum-Seeking-driven RF Control Optimization at the S-DALINAC* — •Manuel Steinhorst, Michaela Arnold, and Norbert Pietralla — IKP, TU Darmstadt

The radiofrequency (rf) control system of the S-DALINAC [1] allows for precise acceleration of the electron beam by keeping the amplitude and phase of the electric accelerating field constant. Residual fluctuations of amplitude and phase due to an unoptimized setting of the rf control parameters can increase the energy spread of the electron beam. In order to minimize corrsponding contributions to the energy spread, an algorithm based on extremum-seeking control was developed for optimized parameter settings. By minimizing a so-called costfunction, it adjusts the setting of the control, that its contribution to the energy spread is minimized. In this talk, the basic concept of the algorithm and data measured at the S-DALINAC are presented.

[1] N. Pietralla, Nuclear Physics News, Vol. 28, No. 2, 4 (2018).

*Supported by the DFG through GRK 2128 and by the state of Hesse through the LOEWE Research Cluster Nuclear Photonics.