TU Darmstadt / ULB / TUprints

Comparison of LLRF Control Approaches for High Intensity Hadron Synchrotrons: Design and Performance

Groß, Kerstin ; Adamy, Jürgen (2022):
Comparison of LLRF Control Approaches for High Intensity Hadron Synchrotrons: Design and Performance. (Publisher's Version)
In: IPAC 2012 - Proceedings New Orleans, Louisiana, USA, pp. 3464-3466,
Darmstadt, IPAC 2012 - New Orleans, Louisiana, USA, New Orleans, Louisiana, USA, 20.-25.05.2012, ISBN 978-3-95450-115-1,
DOI: 10.26083/tuprints-00020354,
[Conference or Workshop Item]

[img] Text
thppc076.pdf
Copyright Information: CC-BY 3.0 Unported - Creative Commons, Attribution.

Download (1MB)
Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Comparison of LLRF Control Approaches for High Intensity Hadron Synchrotrons: Design and Performance
Language: English
Abstract:

A usual and effective way to realize closed-loop controllers is to use cascaded SISO feedback and to rely on some kind of linear PID structure with parameters adjusted manually in simulations or experiments. Such a control may not reach optimal performance if the system is coupled or non-linear. Regarding intense beams, longitudinal beam loading can be compensated by detuning. But the coupling between phase and amplitude (or I and Q component) highly depends on the tuning, that is on the resonant frequency of the cavity. It is derived that cavity and beam dynamics thus show bi-linear nature, i.e. belong to a well investigated class of non-linear systems with appropriate control strategies available. Different controller designs are compared in terms of performance but also design transparency, the need of previous knowledge like the expected magnitude of beam loading and adaptability to different conditions, e.g. during acceleration or if applied to the full range of ion species as at GSI. The performance evaluation is based on macro-particle tracking simulations. In particular avail and limits of an optimal (quadratic cost) MIMO controller for bi-linear systems are shown.

Book Title: IPAC 2012 - Proceedings New Orleans, Louisiana, USA
Place of Publication: Darmstadt
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: IPAC 2012 - New Orleans, Louisiana, USA
Event Location: New Orleans, Louisiana, USA
Event Dates: 20.-25.05.2012
Date Deposited: 21 Jan 2022 08:06
Last Modified: 21 Jan 2022 08:06
DOI: 10.26083/tuprints-00020354
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-203543
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20354
PPN:
Export:
Actions (login required)
View Item View Item