Diagnostics visible beamline at SESAME Storage Ring

Visible light range of Synchrotron radiation is a versa-tile diagnostics tool for accelerator studies and measurements. SESAME’s storage ring has a dedicated diagnostics visible light beamline from 6.5-degree beam port of bending magnet source point. The beamline will host in future a time-correlated single photon counting unit to measure the bunch filling pattern, fast gated camera and a streak camera for longitudinal diagnostics. Recently, the beamline has been extended to be operational from out-side the tunnel (dedicated hutch) to allow more flexible studies with direct source imaging and a double-slit interferometry for beam size measurement and study trans-verse instabilities. In this paper we give an overview of the design of the beamline, modifications and present first results.