SET UP OF A SYNCHROTRON LIGHT MONITOR AT THE 2.5 GEV BOOSTER SYNCHROTRON AT ELSA

For the upgrade of the accelerator facility ELSA towards higherstoredbeamcurrents, anon-destructivebeamanalysis is being implemented at the 2.5 GeV booster synchrotron. It is a fast ramping combined function synchrotron with an extraction repetition rate of 50 Hz. Typically, beam currents of 10 mA are accelerated from 20 MeV to the extraction energy of 1.2 GeV within 8.6 ms, hence the magnetic field is increased by up to 85 T/s. A synchrotron light monitor as the primary diagnostic tool will be utilized for measuring the transversal position and intensity distribution of the beam. Its dynamics on the fast energy ramp is of distinct interest. The proposed set-up of the synchrotron light monitor and the current development are presented.