1 First wall mods status NCSX SIT Meeting Aug 12, 2002 Points at 0, 30, 60 degrees from Art Points x 1.025 and 1.00 in cross sections First try at vessel.

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Presentation transcript:

1 First wall mods status NCSX SIT Meeting Aug 12, 2002 Points at 0, 30, 60 degrees from Art Points x and 1.00 in cross sections First try at vessel mods Dave is trying to fix winding surface

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 Vessel mods, try 1 First wall, as modified Original vessel modified vessel 30 deg points

8 Cross section at 30 deg, with mod1 First wall, as modified Points not bloated Points bloated 2.5%

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

10 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

11 Cross section at 60 degrees

12 Cross section at 60 degrees First wall, as modified Points not bloated Points bloated 2.5%

13 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

14 RF launcher options  Reduce number of straps 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.  Incompatibility with inside launch and divertor operation?

15 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