Single Bunch Instability Studies at Diamond Light Source

Eirini Koukovini-Platia, Marco Apollonio, Riccardo Bartolini, Richard Fielder, Ian Martin, Schaa, Volker RW (Ed.), Petit-Jean-Genaz, Christine (Ed.), Kim, Dong Eon (Ed.), Kim, Kyung Sook (Ed.), Ko, In Soo (Ed.)
Single bunch instability thresholds, the associated coherent tune shifts and the bunch lengthening have been studied at Diamond light source for nominal optics. Measurements were taken under different settings of chromaticity, radio-frequency (RF) voltage and aperture of the insertion devices (IDs). The macro-particle code sbtrack was used to evaluate the instability thresholds and bunch lengthening where different impedance contributions are taken into account such as the resistive wall
more » ... sistive wall impedance, a broad-band resonator model and inductive impedance for the longitudinal plane. A comparison of simulation using the developed model impedance with measurements is shown for all cases.
doi:10.18429/jacow-ipac2016-mopor018 fatcat:2ggihmzqljgnjo3qhofncb47iy