%0 Thesis
%A Lamaack, Jonas
%T New Beam Position Monitor System for PETRA IV
%I University of Hamburg
%V Bachelorarbeit
%M PUBDB-2024-00819
%P 41
%D 2024
%Z Bachelorarbeit, University of Hamburg, 2024
%X The PETRA IV project at DESY aims to upgrade the present synchrotron radiation sourcePETRA III into a source of ultra-low emittance with target emittance of 20pmrad. Thesmall beam emittance translates directly into much smaller beam sizes of about 7 μmhorizontally and 3 μm vertically at insertion device source points, thus imposing stringentrequirements on the machine’s stability. To measure beam position and control orbitstability to the required level of accuracy, a high-resolution BPM system consisting ofapprox. 800 individual monitors will be installed. Its readout electronics will be based onMTCA.4 as a technical platform. To fulfill the long-term drift requirement (< 1 μm over 6days), the concept of crossbar-switching was extended in a way that the analog RF switchmatrix is separated from the readout electronics and placed as close to the BPM pickupas possible, therefore enabling the stabilization of the RF cables. A new RTM card withseveral analog and digital parts taken from the Libera Brilliance+ has been developed andis currently used as the BPM electronic front end. At present, a fully populated MTCAcrate with 6 2BPMRTM and 6 commercial AMC boards for the readout of 12 BPMs isinstalled at PETRA III. This thesis is a performance evaluation of the new system andsummarizes the latest beam measurements, showing that the performance requirementsfor PETRA IV are met.
%F PUB:(DE-HGF)2
%9 Bachelor Thesis
%U https://bib-pubdb1.desy.de/record/603182