JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{spierer:ipac2022-tupost021,
author = {A. Spierer and P. Baudrenghien and J. Egli and G. Hagmann and P. Kuzmanović and I. Stachon and M. Sumiński and T. Włostowski},
% author = {A. Spierer and P. Baudrenghien and J. Egli and G. Hagmann and P. Kuzmanović and I. Stachon and others},
% author = {A. Spierer and others},
title = {{The CERN SPS Low Level RF: The Beam-Control}},
booktitle = {Proc. IPAC'22},
% booktitle = {Proc. 13th International Particle Accelerator Conference (IPAC'22)},
pages = {895--898},
eid = {TUPOST021},
language = {english},
keywords = {controls, cavity, LLRF, proton, hardware},
venue = {Bangkok, Thailand},
series = {International Particle Accelerator Conference},
number = {13},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {07},
year = {2022},
issn = {2673-5490},
isbn = {978-3-95450-227-1},
doi = {10.18429/JACoW-IPAC2022-TUPOST021},
url = {https://jacow.org/ipac2022/papers/tupost021.pdf},
abstract = {{The Super Proton Synchrotron (SPS) Low Level RF (LLRF) has been completely upgraded during the CERN long shutdown (LS2, 2019-2020). The old NIM and VME based, mainly analog system has been replaced with modern digital electronics implemented on a MicroTCA platform. The architecture has also been reviewed, with synchronization between RF stations now resting on the White Rabbit (WR) deterministic link. This paper is the first of a series of three on the SPS LLRF upgrade. It covers the Beam-Control part, that is responsible for the generation of the RF reference frequency from a measurement of the magnetic field, and beam phase and radial position. It broadcasts this frequency word to the RF stations, via a White Rabbit network. The paper presents the architecture, gives details on the signal processing, firmware, hardware and software. Finally, results from the first year of beam commissioning are presented (2021).}},
}