Position Based Phase Scan

Natalia Milas, Mohammad Eshraqi, Yngve Levinsen, Yong Liu, Ryoichi Miyamoto, Ciprian Plostinar, Olander, Johan (Ed.), Schaa, Volker RW (Ed.), Jansson, Andreas (Ed.), Shea, Thomas (Ed.)
Knowledge of the longitudinal beam parameters is important for understanding beam dynamics in linacs. As well as with transverse optics, the settings for the RF cavities have to be established and phase and amplitude seen by the beam must be determined in order to guarantee a stable motion in the longitudinal plane. This work presents an extension of the most widely used phase scan method, relying on time-of-flight, using only transverse positions measured at a few selected BPMs downstream of
more » ... PMs downstream of the cavity being scanned. In principle, the method can be applied both to normal conducting and SC. The suggested method is fast and relatively simple and is capable to provide the values for the cavity transverse misalignment (offsets and tilts) at the same time. It can be a useful part of the initial longitudinal beam tuning.
doi:10.18429/jacow-ibic2019-wepp033 fatcat:bxhinpu3infynny5wnh6agmqey