CERN Accelerating science

Article
Title	RF techniques for spill quality improvement in the SPS
Author(s)	Sota, P A Arrutia (CERN ; JAI, UK) ; Fraser, M A (CERN) ; Velotti, F M (CERN) ; Burrows, P N (JAI, UK) ; Kain, V (CERN) ; Papotti, G (CERN) ; Piandani, R (CERN ; San Luis Potosi U.) ; Roncarolo, F (CERN) ; Spierer, A (CERN) ; Vadai, M (CERN)
Publication	2023
Number of pages	4
In:	JACoW IPAC 2023 (2023) MOPA116
In:	14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPA116
DOI	10.18429/JACoW-IPAC2023-MOPA116
Subject category	Accelerators and Storage Rings
Abstract	The CERN Super Proton Synchrotron (SPS) aims at providing stable proton spills of several seconds to the North Area (NA) fixed target experiments via third-integer resonant slow extraction. However, low-frequency power converter ripple (primarily at 50 and 100 Hz) and high-frequency structures (mainly at harmonics of the revolution frequency) modulate the extracted intensity, which can compromise the performance of the data acquisition systems of the NA experiments. In this contribution, the implementation of Radio Frequency (RF) techniques for spill quality improvement is explored, with particular focus on empty bucket channelling. It is shown that both the main RF systems (at 200 and 800 MHz) can be successfully exploited to improve the SPS slow extraction.
Copyright/License	CC-BY-4.0

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