Abstract:
At the Metrology Light Source (MLS) [1] owned by the Physikalisch-Technische Bundesanstalt (PTB) the bunch length can be varied by more than two orders of magnitude [2]. The bunch length manipulation is achieved by varying different machine parameters, such as RF-voltage amplitude up to 500 kV and the momentum compaction factor α over three orders of magnitude. The subject of this article is the measurement of THz bursting thresholds at the MLS for different bunch lengths.