Alcator C-Mod Weekly Highlights November 2, 2001 Work continued on the machine inspection this week. The inner divertor installation is proceeding. ICRF and LH systems continue to be developed, and new hardware fabricated and installed. Physics ------- Most C-Mod Physicists attended the APS/DPP meeting in Long Beach, CA this week. Fifty-three C-Mod related invited talks, talks, and posters were presented at the meeting. Inspection ---------- Work continued this week on measurements of the TF feltmetal thickness and assessment of its condition. The feltmetal is generally in excellent condition. We also continued tests of the OH coaxes and calculations of stresses on the bolts and helicoils as we work to understand indications of high stress on the threads. Inner Divertor -------------- Welding of the inner wall studs will be complete early next week; only two studs remain to be installed. Pull tests of all the studs is also nearly done. The stud installation process has gone very smoothly and taken much less time than scheduled. In addition, we now have all backing and C-plates silver plated and in house, and following a final cleaning and vacuum bake, they will be ready for installation. ICRF Systems ------------ A temperature stable local oscillator to drive the new demodulator boards is being designed and prototyped. The demodulator board is in the PC board layout phase. We continue to develop models of the transmitters and transmission line system. S-parameter measurements of the antennas will be used in the model along with simulation results. Lower Hybrid MIE Project ------------------------ Parts have been received for the klystron water cooling pump controller. Interface electronics and packaging hardware for the controller are being developed. The installation of the water system header/manifold has begun in the cell. Wiring of the flow meters has also begun. Cabling for the water system is being layed out and vendors for fabrication are being selected. Assembly of the HVPS is nearly complete. The last internal 13.8 kV wiring should be complete early next week. The new replacement transformers are in Boston awaiting processing through customs. The addition of MIT power distribution panel,lighting and convenience outlets is complete. Termination of fiber optic cables is complete and test results have been received. The high voltage triax cable that connects the HVPS to the klystrons is ready for termination. The 13.8kV cabling has been terminated in our switchyard. DNB and Related Diagnostics --------------------------- We have begun removal of the old diagnostic neutral beam from the C-Mod cell. Work continues on design improvements to the DNB related diagnostics. A review of modifications to the F-Port flange and beam duct will be held next week. Travel and Visits ----------------- The ISIS Program is a graduate program for Southern Connecticut State University high school science teachers with the primary focus being to expose teachers to cutting edge scientific research in a variety of disciplines. On Friday approximately thirty graduate students from SCSU attended a lecture given by Brian LaBombard on Alcator C-Mod and then had a tour of the facility. Justin Sarlese helped Brian with the tour. Amanda Hubbard went to State University of NY at Albany on Friday, and gave a Physics Department seminar on "Understanding and Improving Energy Transport in Fusion Plasmas."