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Generation of RF Frequency and Phase References on the FAIR Site

Zipfel, Bernhard ; Klingbeil, Harald ; Laier, Ulrich ; Ningel, Klaus-Peter ; Schäfer, S. ; Thielmann, Christof ; Hartel, Uta ; Lens, Dieter Etienne Mia (2022)
Generation of RF Frequency and Phase References on the FAIR Site.
IPAC2014: 5th International Particle Accelerator Conference. Dresden (15.-20.06.2014)
doi: 10.26083/tuprints-00020324
Conference or Workshop Item, Secondary publication, Publisher's Version

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Item Type: Conference or Workshop Item
Type of entry: Secondary publication
Title: Generation of RF Frequency and Phase References on the FAIR Site
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2014
Publisher: Joint Accelerator Conferences Website
Book Title: IPAC2014: Proceedings of the 5th International Particle Accelerator Conference
Series: International Particle Accelerator Conference
Series Volume: 5
Event Title: IPAC2014: 5th International Particle Accelerator Conference
Event Location: Dresden
Event Dates: 15.-20.06.2014
DOI: 10.26083/tuprints-00020324
Corresponding Links:
Origin: Secondary publication service

Based on the Bunch Phase Timing System (BuTiS) local analog radio frequency reference signals (RF references) like the particle revolution frequency and their multiple harmonics will be generated. These references are used to control the phase of the accelerator cavities to altering harmonics of the bunch revolution frequency. Delay or phase shifts from the FAIR-Center to references at the BuTiS endpoints are already compensated by the BuTiS receivers. Phase shifts from the RF reference generators to LLRF electronics can be compensated by controlling the output phases of the DDS modules of the RF references. However phase shift delays of multiple harmonics at the same interconnecting electrical path are not identical at the same time. Configurable electronics manage phase calibration of the RF references to their endpoints. Calibration may depend on frequency and harmonic of the RF reference, aging as well as on thermal effects. The electrical length and impedance of interconnecting cables for phase control loops can be compensated. This is an important feature, in particular if control loops are switched between different harmonic frequencies.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-203240
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 18 Department of Electrical Engineering and Information Technology > Institut für Automatisierungstechnik und Mechatronik > Control Methods and Robotics (from 01.08.2022 renamed Control Methods and Intelligent Systems)
Date Deposited: 14 Jan 2022 13:36
Last Modified: 20 Mar 2023 14:05
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20324
PPN: 490518958
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