ELECTRO OPTICAL BEAM DIAGNOSTICS SYSTEM AND ITS CONTROL

Electro Optical (EO) techniques are very promising noninvasive methods for measuring extremely short (in a subpicosecond range) electron bunches. A prototype of an EO Bunch Length Monitoring System (BLMS) for the future SwissFEL facility [1] is created at the Paul Scherrer Institute (PSI). The core of this system is an advanced fiber laser unit with pulse generating, phase locking and synchronization electronics. The system is integrated into the EPICS based PSI controls, which significantly simplifies its operations. The paper presents the main components of the BLMS and its performance.