PRELIMINARY TESTS OF A NEW KIND OF BPM SYSTEM FOR SOLEIL

SOLEIL is a third generation light source in construction near Paris. Its small emittance requires improving the resolution of existing BPM systems to submicron level up to 100 Hz and stability to the micron level. The same BPM system has also to perform turn-by- turn acquisitions at high rate (846 kHz) with a resolution of a few microns for machine physics studies. SOLEIL entrusted the design of a new digital BPM system to a young Slovenian company, Instrumentation Technologies. SOLEIL defined technical specifications that seemed attainable and proposed a way of improving beam position measurement stability when the current or the bunch pattern of the beam changes. This paper presents the preliminary tests performed in the laboratory with signal generators simulating the electron beam as well as those done with real beam at ESRF in order to evaluate the SOLEIL BPM Electronics.