1 First wall mods status NCSX SIT Meeting July 1, 2002 Points at 0, 30, 60 degrees from Art Points x in cross sections RF launchers bigger issue than trim coils

2 Model RF launcher locations, typ 6 places FW panels, 360 deg shown Modular coil partial assembly Vessel with insulation

3 Plan cross section 10 deg 0 deg 20 deg 30 deg 40 deg 50 deg 60 deg RF launcher locations Trim coils

4 Cross section at 0 degrees  Trim coils intersect this section  Almost all points are inside first wall

5 Cross section at 10, 20 degrees  Points not available yet  Trim coils intersect 10 deg section 20 deg 10 deg

6 Cross section at 30 degrees  Trim coils do not intersect this section  Closest approach to first wall

7 Cross section at 40, 50 degrees  Points not available yet  RF launchers intersect these sections 40 deg 50 deg Co-ax Faraday shield

8 Cross section at 60 degrees  Field joint and limiters are around this section  RF launchers on either side  Almost all points are inside first wall

9 Cross section at 60 degrees  Cross section changes abruptly  Limiter visible in this view  RF launchers on either side of this section mostly hidden by limiter limiter

10 RF launcher options  Reduce number of launchers to 4 instead of 6 per section  Less power?, unless strap lengths can be increased  Reduce coax to 4 inches instead of 6, maybe smaller  Move feeds farther out by running strap through “tunnels” to get straight-in shot at feed, but need more than 3 cm behind FW in these areas.

11 PFC panel / rib detail  Details for one concept for panel attachment developed with BFG Aerospace Plasma Vacuum vessel Heated / Cooled Rib Thermally insulated connection to vessel Panel installed Panel ass’y retracted