| Title |
Upgrade of the BPM Long Term Drift Stabilization Scheme Based on External Crossbar Switching at PETRA III |
| Authors |
- G. Kube, F. Schmidt-Föhre, K. Wittenburg
DESY, Hamburg, Germany
- A. Bardorfer, L. Bogataj, M. Cargnelutti, P. Leban, M.O. Oblak, P. Paglovec, B. Repič
I-Tech, Solkan, Slovenia
|
| Abstract |
PETRA IV at DESY will be an upgrade of the present synchrotron radiation source PETRA III into an ultra low-emittance source with beam emittance of about 20 pm.rad which imposes stringent requirements on the machine stability. In order to measure beam positions and control orbit stability to the required level of accuracy, a high resolution BPM system will be installed which consists of about 800 monitors with the readout electronics based on MTCA.4. In order to fulfill the requested long-term drift requirement (< 1 micron over 7 days), also the BPM cable paths have to be stabilized because of the PETRA-specific machine geometry. To achieve this, the crossbar switching concept was extended such that the analogue switching part is separated from the read-out electronics and brought as close as possible to the BPM pickup. While first measurements were presented before, meanwhile the system has undergone a major revision, especially the external switching matrix changed from a prototype setup to a system close to the final design. This contribution summarizes the latest measurements from PETRA III, demonstrating the high performance of the external stabilization concept.
|
| Paper |
download WEP08.PDF [1.033 MB / 4 pages] |
| Cite |
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※ EndNote |
| Conference |
IBIC2022 |
| Series |
International Beam Instrumentation Conference (11th) |
| Location |
Kraków, Poland |
| Date |
11-15 September 2022 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Peter Forck (GSI, Darmstadt, Germany); Adriana Wawrzyniak (SOLARIS, Kraków, Poland); Volker R.W. Schaa (GSI, Darmstadt, Germany); Grzegorz W. Kowalski (SOLARIS, Kraków, Poland); Agnieszka (SOLARIS Cudek (SOLARIS, Kraków, Poland) |
| Online ISBN |
978-3-95450-241-7 |
| Online ISSN |
2673-5350 |
| Received |
07 September 2022 |
| Revised |
10 September 2022 |
| Accepted |
11 September 2022 |
| Issue Date |
18 October 2022 |
| DOI |
doi:10.18429/JACoW-IBIC2022-WEP08 |
| Pages |
395-398 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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