Chromaticity measurements in the ESRF Booster

In view of optimizing the performance of the ESRF Booster, a series of experiments have been conducted in order to measure the chromaticity during the cycle for different sextupole settings. To this end, the betatron tunes were measured for different values of the RF frequency using the new tune-meter application. The experimental results were finally analyzed and compared to theoretical data of the Booster model, showing good agreement.