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LHC Online Chromaticity Measurement - Experience After One Year of Operation |
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- K. Fuchsberger, G.H. Hemelsoet
CERN, Geneva, Switzerland
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Hardware and infrastructural requirements to measure chromaticity in the LHC were available since the beginning. However, the calculation of the chromaticity was mostly made offline. This gap was closed in 2015 by the development of a dedicated application for the LHC control room, which takes the measured data and produces estimates for the chromaticity values immediately online and allows to correct chroma and tune accordingly. This tool proved to be essential during commissioning as well as during every injection-phase of the LHC. It became particularly important during the intensity ramp-up with 25ns where good control of the chromaticity became crucial at injection. This paper describes the concepts and algorithms behind this tool, the experience gained as well as further plans for improvements.
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Slides MOBL04 [7.414 MB]
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| DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IBIC2016-MOBL04
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