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Sensitivity Analysis of Feedforward Beam Current Compensation for Improved Beam Loading Robustness

Stoica, D. Mihailescu and Domont-Yankulova, D. and Klingbeil, Harald and Lens, D. (2019):
Sensitivity Analysis of Feedforward Beam Current Compensation for Improved Beam Loading Robustness. (Publisher's Version)
In: Journal of physics. Conference Series, 1350, In: 10th International Particle Accelerator Conference, pp. 3850-3852,
Geneva, JACoW Publishing, 10th International Particle Accelerator Conference, Melbourne, Australien, 19.-24.05.2019, ISBN 978-3-95450-208-0,
DOI: 10.25534/tuprints-00014534,
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Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Sensitivity Analysis of Feedforward Beam Current Compensation for Improved Beam Loading Robustness
Language: English
Abstract:

The planned SIS100 heavy ion synchrotron at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany will possess twenty ferrite accelerating cavities in its final stage of extension. During the intended acceleration cycles, the cavities will encounter significant beam loading effects, which have to be handled by the control systems. As both the generator- and beam-current act on the same system input, a feedforward disturbance compensation can be a promising approach to improve beam qualities and suppress instabilities induced by the beam current. Particle tracking simulations, incorporating twenty ferrite cavities and their attached LLRF control systems, are performed to analyse the sensitivity of the beam quality with respect to errors in the feedforward beam current compensation. The main focus lies on the time after injection from a pre-accelerator, where most cavities in the SIS100 do not provide any gap voltage and thus are particularly sensitive to induced voltages by beam currents if the cavities are not or only partly short-circuited.

Title of Book: 10th International Particle Accelerator Conference
Series Name: Journal of physics. Conference Series
Volume: 1350
Number: 10
Place of Publication: Geneva
Publisher: JACoW Publishing
Uncontrolled Keywords: cavity, emittance, controls, injection, simulation
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
Event Title: 10th International Particle Accelerator Conference
Event Location: Melbourne, Australien
Event Dates: 19.-24.05.2019
Date Deposited: 30 Nov 2020 13:26
Last Modified: 30 Nov 2020 13:26
DOI: 10.25534/tuprints-00014534
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-145344
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/14534
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