EMITTANCE MEASUREMENTS AT FAST FACILITY *

scheduled to start in Summer of 2018. Both lowand highenergy beam lines are equipped with an array of diagnostics including beam position monitors, wall current monitor, and beam imaging stations to monitor beam parameters during tuning, operation and studies. Beam emittance in particular is of critical importance for both commissioning of the IOTA ring as well as operation of the ICS and other experiments. (In this paper the emittance normally means RMS emittance unless specifically defined.) In order to measure the emittance of the beam quickly and accurately a real-time emittance measurement has been developed based on a multi-slit method [4] in the low-energy beamline. In addition to the emittance, this method provides Twiss parameters that may be used in beamline simulation programs to properly match with low energy beamline lattice to the CM. Emittance of the highenergy beam is measured with standard quad scan approach. In this report we present results from emittance studies using both methods during the 2017 300 MeV beam commissioning run (Fig. 1).