12 research outputs found

    Recent Developments of the European XFEL LLRF System

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    The European X-ray free electron laser (XFEL) [1] com-prised more than 800 TESLA-type super-conducting accel-erator cavities which are driven by 25 high-power multi-beam klystrons. For reliable, reproducible and maintain-able operation of the linear accelerator (linac), the low-level radio frequency (LLRF) system will process morethan 3000RF channels. Furthermore, stable FEL opera-tion demands field stability better than 0.01deg. in phaseand 0.01% in amplitude. To cope with these challenges,the LLRF system is developed on a MTCA.4 [2] platform.In this paper, we give an update on the latest electronicsdevelopments, improvements of the feedback controller al-gorithm and measurement results at FLAS

    Ferrous metallurgy

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    SOLVENT EXTRACTION AND SPECTROPHOTOMETRIC METHODS FOR THE DETERMINATION OF SOME TOXIC METAL IONS

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