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Impact of Simplified Stationary Cavity Beam Loading on the Longitudinal Feedback System for SIS100

Groß, Kerstin ; Klingbeil, Harald ; Lens, Dieter Etienne Mia (2022):
Impact of Simplified Stationary Cavity Beam Loading on the Longitudinal Feedback System for SIS100. (Publisher's Version)
In: International Particle Accelerator Conference, 5, In: IPAC2014: Proceedings of the 5th International Particle Accelerator Conference, pp. 1736-1738,
Darmstadt, Joint Accelerator Conferences Website, IPAC2014: 5th International Particle Accelerator Conference, Dresden, 15.-20.06.2014, ISBN 978-3-95450-132-8,
DOI: 10.26083/tuprints-00020323,
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Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Impact of Simplified Stationary Cavity Beam Loading on the Longitudinal Feedback System for SIS100
Language: English
Abstract:

The main synchrotron SIS100 of the Facility for Antiproton and Ion Research (FAIR) will be equipped with a bunch-by-bunch feedback system to damp longitudinal beam oscillations. In the basic layout, one three-tap finite impulse response (FIR) filter will be used for each single bunch and oscillation mode. The detected oscillations are used to generate a correction voltage in dedicated broadband radio frequency (RF) cavities. The digital filter is completely described by two parameters, the feedback gain and the passband center frequency, which have to be defined depending on the longitudinal beam dynamics. In earlier works, the performance of the closed loop control with such an FIR-filter was analyzed and compared to simulations and measurements with respect to the damping of coherent dipole and quadrupole modes, the first modes of oscillation. This contribution analyzes the influence of cavity beam loading on the closed loop performance and the choice of the feedback gain and passband center frequency to verify future high current operation at FAIR.

Book Title: IPAC2014: Proceedings of the 5th International Particle Accelerator Conference
Series: International Particle Accelerator Conference
Series Volume: 5
Place of Publication: Darmstadt
Publisher: Joint Accelerator Conferences Website
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
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)
Event Title: IPAC2014: 5th International Particle Accelerator Conference
Event Location: Dresden
Event Dates: 15.-20.06.2014
Date Deposited: 14 Jan 2022 13:33
Last Modified: 14 Jan 2022 13:33
DOI: 10.26083/tuprints-00020323
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-203237
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20323
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