Alcator C-MOD Weekly Highlights Nov 21, 1994 Alcator C-MOD has resumed plasma operations. Runs during this week have concentrated on conditioning discharges and equilibrium tuning. Power systems testing was completed on Wednesday, Nov 16. All supplies and coils were run for 1 second flattops to verify diagnostic response. Excellent agreement between predicted and observed magnetics signals was obtained. Plasma operations began on Thursday, after about 12 hours of overnight discharge cleaning (ECDC). Breakdown was achieved on the fourth attempt, and successful current rise (to 200kA) was obtained on shot 10. The discharges were highly radiative, as is typical for initial operation after a long vent. Operation continued on Friday with more tokamak conditioning discharges. Currents up to 500kA with pulse lengths above 0.7 seconds were obtained. In order to further clean up the machine, ECDC was run continuously over the weekend, for a total of about 60 hours. On Monday, running resumed and all indications were that the machine conditioning was improved. Standard tokamak discharges with currents up to 765kA and durations greater than 1.3 seconds were obtained. Diagnostics continue to be brought on-line. The ECE grating polychromator is operational. The HIREX high-resolution x-ray spectroscopy diagnostic is also running and measuring ion temperature. The TCI interferometer is also operational. Owing to an editing error, the number of C_MOD papers presented at the APS meeting was given incorrectly in last week's report. The correct number of C-MOD papers was forty-four.