Speaker
Michael Abbott
(Diamond Light Source)
Description
A newly re-implemented feature of the Diamond Multi-Bunch Feedback processor
(DLS MBF) uses the ability to measure the betatron/synchrotron tunes using a
phase locked loop approach, which produces tune readings at many kHz rate.
This function (which we call Tune PLL) provides insight into the dynamic
behaviour of systems affecting the machine tunes.
A new application of the Tune PLL measurement is to simultaneously correct the
swept tune measurement for dynamic tune shifts during measurement sweeps,
allowing for very high precision measurements of the detailed tune profile.
This enables also very slow sweeps allowing the measurement of tunes spectra of
extremely weak bunches with high fidelity.
Author
Michael Abbott
(Diamond Light Source)
Co-author
Guenther Rehm
(Diamond Light Source)
