Title |
First SELAP Algorithm Operational Experience of the New LLRF 3.0 RF Control System |
Authors |
- T.E. Plawski, R. Bachimanchi, S. Higgins, C. Hovater, J. Latshaw, C.I. Mounts
JLab, Newport News, Virgina, USA
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Abstract |
The JLAB LLRF 3.0 system has been developed and is replacing the 30-year-old LLRF systems in the CEBAF accelerator. The LLRF system builds upon 25 years of design and operational RF control experience (digital and analog), and our recent collaboration in the design of the LCLSII LLRF system. The new system also incorporates a cavity control algorithm using a fully functional phase and amplitude locked Self Exciting Loop (SELAP). The first system (controlling 8 cavities) was installed and commissioned in August of 2021. Since then the new LLRF system has been operating with cavity gradients up to 20 MV/m, and electron beam currents up to 350 uA. This paper discusses the operational experience of the LLRF 3.0 SELAP algorithm along with other software and firmware tools like cavity and klystron characterization and quench detection.
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Footnotes & References |
T. E. Plawski et al., ’JLAB LLRF 3.0 Development and Tests’, in Proc. 12th Int. Particle Accelerator Conf. (IPAC’21), Campinas, Brazil, May 2021, pp |
Paper |
download THPOPA24.PDF [0.822 MB / 3 pages] |
Cite |
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Conference |
LINAC2022 |
Series |
International Linear Accelerator Conference (31st) |
Location |
Liverpool, UK |
Date |
28 August-02 September 2022 |
Publisher |
JACoW Publishing, Geneva, Switzerland |
Editorial Board |
Peter McIntosh (STFC DL, Daresbury, UK); Graeme Burt (Lancaster Univ., Lancaster, UK); Robert Apsimon (Lancaster Univ., Lancaster, UK); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
Online ISBN |
978-3-95450-215-8 |
Online ISSN |
2226-0366 |
Received |
10 August 2022 |
Revised |
01 September 2022 |
Accepted |
07 September 2022 |
Issue Date |
12 October 2022 |
DOI |
doi:10.18429/JACoW-LINAC2022-THPOPA24 |
Pages |
795-797 |
Copyright |
Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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