The near completion of the recirculation loop. Installation of the east arc was essentially completed, including placement of the second 180-degree dipole magnet. Basically all that remains to be installed are some small corrector and trim magnets, the sextupole magnets (likely to be "last in", sometime in July), and the beam scrapers.

High-power rf testing of warm ceramic windows. The maximum rf power achieved by the klystron during these tests was 37 kW, all of which was successfully transmitted through the windows. Additional tests are planned for June.