DESY, Hamburg, Germany
I-Tech, Solkan, Slovenia
MOP021
University of Hamburg, Hamburg, Germany
I-Tech, Solkan, Slovenia
DESY, Hamburg, Germany
| Paper | Title | Page |
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| MO3C04 | A MTCA Based BPM-System for PETRA IV | 19 |
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| The PETRA IV project aims to upgrade the present PETRA III synchrotron into an ultra low-emittance source. The small emittances translate directly into much smaller beam sizes, thus imposing stringent requirements on the machine stability. In order to measure beam positions and control orbit stability to the level of 10% of beam size and divergence, a high resolution BPM system will be installed which consists of 788 individual monitors with the readout electronics based on MTCA.4. In order to fulfil the long-term drift requirement (< 1 micron over 7 days), several analog, digital and SW parts were taken from the Libera Brilliance+ and a new RTM module has been developed to be used as BPM electronics RFFE. In addition, its analogue RF switch matrix used for long-term stabilization was separated and placed close to the BPM pickup, hence enabling an additional stabilization of the RF cables. At present, a fully populated MTCA crate with 6 AMC boards for the readout of 12 BPMs is installed at PETRA III and is extensively being tested. This contribution summarizes the latest beam measurements, demonstrating the high performance of the BPM system and the external stabilization concept. | ||
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Slides MO3C04 [3.604 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MO3C04 | |
| About • | Received ※ 06 September 2023 — Revised ※ 10 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 02 October 2023 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
MOP021 |
New Beam Position Monitor System for PETRA IV | |
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| The PETRA IV project at DESY aims to upgrade the present synchrotron radiation source PETRA III into a source of ultra-low emittance with target emittance of 20 pmrad. The small beam emittance translates directly into much smaller beam sizes of about 7 microns horizontally and 3 microns vertically at insertion device source points, thus imposing stringent requirements on the machine’s stability. In order to measure beam position and control orbit stability to the required level of accuracy, a high-resolution BPM system consisting of 790 individual monitors will be installed. Its readout electronics will be based on MTCA.4 as a technical platform. To fulfill the long-term drift requirement (< 1 micron over 7 days), the concept of crossbar-switching was extended in such a way that the RF switch matrix is separated from the readout electronics and placed as close to the BPM pickup as possible, therefore enabling additional stabilization of the RF cables. At present, a fully populated MTCA.4 crate with 6 AMC boards for the readout of 12 BPMs is installed at PETRA III and extensively tested. This contribution summarizes the latest measurements of the long term stability. | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |