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RIS citation export for THPRB082: The CERN SPS Low Level RF upgrade Project

AU  - Hagmann, G.
AU  - Baudrenghien, P.
AU  - Betz, J.D.
AU  - Egli, J.
AU  - Galindo Guarch, F.J.
AU  - Kotzian, G.
AU  - Rizzi, M.
AU  - Schmid, L.
AU  - Spierer, A.
AU  - Włostowski, T.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - The CERN SPS Low Level RF upgrade Project
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The High Luminosity LHC project (HL-LHC) calls for the doubling of the beam intensity injected from the Super Proton Synchrotron (SPS). This is not possible with the present RF system consisting of four 200 MHz cavities. An upgrade was therefore launched, consisting of the installation of two more cavities during the machine shutdown in 2019-2020 (LS2). Installation of more cavities requires the installation of extra Low Level RF (LLRF) electronics. The present LLRF system consists of the original equipment installed in the 1970s, plus some additions dating from the late 1990s when the SPS was commissioned as LHC injector. The High-Power RF up-grade has motivated a complete renovation of the LLRF during LS2; use of a MicroTCA platform, use of a digital deterministic link for synchronization (the so-called White Rabbit), use of an absolute clock for the processing, new algorithms for reducing the cavity impedance, and a complete re-design of the beam control loops and slip-stacking.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 4005
EP  - 4008
KW  - cavity
KW  - controls
KW  - feedback
KW  - acceleration
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-THPRB082
UR  - http://jacow.org/ipac2019/papers/thprb082.pdf
ER  -