The PEGASUS plane wave transformer injector has been conditioned to 20 MW of RF power. Initial operations show a 15 MeV dark current beam that will be used for beam radiation studies. The design of a new LaB_6 cathode will allow for both thermionic emission and photoinjection operation. Experiments currently planned include novel beam instrumentation, surface effects in optical transition radiation, and waveguide SASE FEL. 347 24th International Free Electron Laser Conference /home/httpd/docserver/releases/20080613005430/public/paper/file/32/WPAB030.pdf unavailable 3 32 3 2003 Elsevier 540 2007-10-19T15:41:08-07:00 II-43 2002