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Cavity Impedance Reduction Strategies During Multi Cavity Operation in the SIS100 High Intensity Hadron Synchrotron

Mihailescu-Stoica, Dinu ; Domont-Yankulova, Dilyana ; Lens, Dieter ; Klingbeil, Harald (2021)
Cavity Impedance Reduction Strategies During Multi Cavity Operation in the SIS100 High Intensity Hadron Synchrotron.
9. International Particle Accelerator Conference (IPAC2018). Vancouver, Kanada (29.04.-04.05.2018)
doi: 10.26083/tuprints-00017654
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: Cavity Impedance Reduction Strategies During Multi Cavity Operation in the SIS100 High Intensity Hadron Synchrotron
Language: English
Date: 2021
Place of Publication: Geneva
Year of primary publication: 2018
Publisher: JACoW Publishing
Book Title: Proceedings of the 9th International Particle Accelerator Conference
Event Title: 9. International Particle Accelerator Conference (IPAC2018)
Event Location: Vancouver, Kanada
Event Dates: 29.04.-04.05.2018
DOI: 10.26083/tuprints-00017654
Corresponding Links:
Origin: Secondary publication service
Abstract:

The planned SIS100 heavy ion synchrotron at the GSI Helmholtzzentrum für Schwerionenforschung will possess twenty ferrite accelerating cavities in its final stage of extension. As at injection and at flat top during slow extraction of the planned acceleration cycles the RF voltage will be relatively low, not all cavities will be active in this part of operation. It is important to analyse the impact of the inactive cavities on the overall RF voltage and subsequently their implication on the longitudinal particle dynamics. Classical approaches for reducing the beam impedance consist of active detuning of the cavities to pre-described parking frequencies. The fact that two out of ten buckets have to stay empty in all SIS100 scenarios is of particular interest as additional frequency components appear in the excitatory beam current, which have to be considered when the cavity is detuned. Therefore multi-cavity particle tracking simulations, consisting of twenty cavities and their attached LLRF control systems, are carried out in order to analyse different possibilities to minimize the impact on the beam dynamics and emittance growth.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-176547
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)
18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields > Accelerator Technology
Date Deposited: 08 Apr 2021 06:56
Last Modified: 28 Jul 2023 10:00
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/17654
PPN: 478863624
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