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Dortmund 2021 – scientific programme

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AKPIK: Arbeitskreis Physik, moderne Informationstechnologie und Künstliche Intelligenz

AKPIK 1: AKPIK I: Data Science & Analytics

AKPIK 1.3: Talk

Tuesday, March 16, 2021, 16:30–16:45, AKPIKa

Status of Beam-Based Feedback Development for Superconducting Electron Linear Accelerator ELBE — •Andrei Maalberg1,2, Michael Kuntzsch1, and Eduard Petlenkov21Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — 2Department of Computer Systems, Tallinn University of Technology, 19086 Tallinn, Estonia

The superconducting electron linear accelerator ELBE at Helmholtz-Zentrum Dresden-Rossendorf represents a versatile light source operated in continuous wave mode. As new experiments and beam modes place a higher demand on the beam stability, it becomes critical to investigate new ways of improving the existing beam control schemes. Following this, the current control system is planned to be upgraded by a beam-based feedback, and in this contribution we summarize the work in progress.

In essence, the work status can be outlined as follows. First, a plant model has been developed that demonstrated how RF noise translates into electron beam instabilities. Based on this modelling, an optimal H2 controller has then been designed to reduce the impact of RF noise on electron beam properties. As a last step, the designed controller is currently being transferred into VHDL code to be executed on fast FPGA hardware. The resulting beam-based feedback system will be evaluated at ELBE in dedicated machine development shifts.

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