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Entered: Mar 14 2011 11:48:15:457AM

Author: Steve Wolfe

Physics Operator Plan and Engineering setup for Tuesday, 15-Mar-2011 MP#583 Optimization of Mode Conversion Flow Drive (I-mode edition) SL: Y. Lin PO: wolfe Overnight ECDC gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s ----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1110309024 **Except TF current limit to 165kA** Acoil: -Dtop +Dbot +Jtop -Jbot (standard reversed field) Hybrid Enabled Gas setup: Fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 2 psi Ne Hybrid enabled (PG1) leave B-side upper as is Hybrid ENABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill H-bottom with 1psi Argon, Hybrid ENABLED fill NINJA with 10 psi D2 DISABLED Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus Leave z-bolo shutter as is (should be open) Torvac gatevalve toggle (yes/no): no Boronization(yes/no): no Overnight ECDC (yes/no): YES ICRF(yes/no): YES LH(yes/no): no Cryopump (yes/no): no DNB (yes/no): YES Vessel temperature: 45/45/45 ------------------------------------------------------ Physop plan: ------------ Load from 1110309024 (1.0MA, 5.8T, 7e19, LSN) Segment 1 changes: Extend seg1 pg3 puff to 0.1sec, reduce from 70V to 50V Reduce pg4 from 28 to 25msec Segment 2 changes: Reduce TF_CURRENT from 159733. to 141.7e3 (5.1T) Add PG2 (B-side Upper, He3) puff from 0.2 to .35sec Consider increasing early nl04 program or adding pg3 to avoid density dip at .25 sec. Proceed according to SL plan. Probably will need a locked mode calibration shot at some point; it's in segment 3, but need to check that the argon puff is from h-bot and the neon is off.

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