%0 Conference Paper
%A Fogel, Vladimir
%A Ayvazyan, Valeri
%A Bellandi, Andrea
%A Branlard, Julien
%A Bousonville, Michael
%A Butkowski, Lukasz
%A Cherepenko, Andrey
%A Choroba, Stefan
%A Diomede, Marco
%A Eckoldt, Hans-Joerg
%A Goeller, Sebastian
%A Hartung, Jens
%A Hauberg, Axel
%A Walker, Nicholas John
%A Weinhausen, Timo
%T Optimization of klystron drive signal and HV shape to reduce energy consumption during operation of the European XFEL 
%C [Geneva]
%I JACoW Publishing
%M PUBDB-2023-02058
%@ 978-3-95450-231-8
%P 1806-1808
%D 2023
%Z Literaturangaben;
%< [Ebook] IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings / hosting institutions: INFN, Elettra Sincotrone Trieste , [Geneva] : JACoW Publishing, [2023],
%X Currently 26 RF stations are in operation at the European X-ray Free Electron Laser (XFEL) and all RF stations can deliver sufficient power to support 600 µs beam pulse with an energy up to 17 GeV. These beam parameters require a power consumption of about 4.9 MW for high-power RF. Of course, the simplest way to save power is to reduce the XFEL repetition rate, but with some additional work and research, and without modifying any hardware, we can save the modulator power, without any impact on the XFEL performance. To reduce the power, we offer two methods that can be used together or separately. The first one is to make full use of the available power of the klys-tron during the rise and fall time of the HV pulse, and partial use of the available power during cavity filling by using phase and amplitude compensation. As a result, we can reduce the length of the HV pulse, because we fill the cavities with energy earlier. The second one is to slowly reduce the klystron HV during flattop. In total we can reduce the power consumption up to 30
%B 14th International Particle Accelerator Conference
%C 7 May 2023 - 12 May 2023, Venice (Italy)
Y2 7 May 2023 - 12 May 2023
M2 Venice, Italy
%K Accelerator Physics (Other)
%K mc2-photon-sources-and-electron-accelerators - MC2: Photon Sources and Electron Accelerators (Other)
%K mc2-a06-free-electron-lasers - MC2.A06: Free Electron Lasers (Other)
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%R 10.18429/JACoW-IPAC2023-TUPL018
%U https://bib-pubdb1.desy.de/record/582569