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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.
IPAC2014: 5th International Particle Accelerator Conference. Dresden (15.-20.06.2014)
doi: 10.26083/tuprints-00020323
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: Impact of Simplified Stationary Cavity Beam Loading on the Longitudinal Feedback System for SIS100
Language: English
Date: 2022
Place of Publication: Darmstadt
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-00020323
Corresponding Links:
Origin: Secondary publication service
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.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-203237
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 13:33
Last Modified: 20 Mar 2023 12:54
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20323
PPN: 49051894X
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