Decoherence due to Second Order Chromaticity in the NSLS-II Storage Ring

Gabriele Bassi, Alexei Blednykh, Jinhyuk Choi, Victor Smaluk, Schaa, Volker R.W. (Ed.), Henderson, Stuart (Ed.), Akers, Evelyn (Ed.), Satogata, Todd (Ed.)
We study decoherence effects due to second order chromaticity for small amplitude kicks, in order to estimate the energy spread from TbT data of the NSLS-II storage ring. The bare lattice case (no Damping Wigglers and Insertion devices) has been considered, due to the long transverse radiation damping time. To minimize the chromatic damping/antidamping from the slow-head tail effect, we used a short train of bunches distributed over consecutive rf-buckets with a high enough average current to
more » ... verage current to obtain a good BPM signal. The vertical and horizontal betatron motion have been excited independently with pinger magnets. In this contribution we limit the discussion to the horizontal case.
doi:10.18429/jacow-ipac2015-mopmn016 fatcat:buiclsa2anc4vgikwzpkh4qsdi