Miniproposals

Miniproposal: 558 Date Filed: 7/16/2009 Title: Characterization of RF sheaths during ICRF First Author: Steve Wukitch Session Leader: Roman Ochoukov (shots 1-33)

Engineering Operator Run Comment

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Session Leader Plans

Entered: Aug 27 2009 06:50:55:090PM

Author: Roman Ochoukov

///////////////////////////////////////////////////////////////////////////// This run is the continuation of MP558 (Characterization of ICRF induced sheaths) that started on July 17th/2009. The previous run did not have the emissive probe operating for plasma potential measurements. The emissive probe is now running and available. Start with a regular 1.0 MA discharge, same as 1090717001: 5.4 T, nl_04 ~0.8, right gap ~1.0 cm, elongation ~1.6, upper triangularity ~0.55, lower triangularity ~0.3. Run ICRF in a staircase form starting with the D and followed by E and J if possible (if can't fit three staircased waveforms then use two with E and J alternating). The RF steps are 0.5, 1.0, and 1.5 MW per step. First perform a density scan at 1.0 MA: nl_04 = 0.5 - 1.1 --> 7 shots. Then scan the current (0.8 MA, 0.6 MA, 1.2 MA) keeping the density constant at nl_04 ~1.1, repeat at nl_04 = 0.8 and 0.6 --> 9 shots Scan the toroidal field at constant Ip = 1 MA and nl_04 = 1.0 between 5 and 6 T --> 6 shots Scan the outer gap between 0.5 and 2 cm at const current, Bt, and nl_04 --> 4 shots May change the order of some scans depending on the results from the emissive, Katsumata, and bdot probes. ///////////////////////////////////////////////////////////////////////////

Physics Operators Plans

Entered: Aug 28 2009 09:17:11:770AM

Author: Robert Granetz

Engineering setup for Friday 2009/08/28 MP558 - Characterization of ICRF sheaths Session leader: R. Ochoukov Physics operator: R. Granetz Standard overnight ECDC and 60 C bake Run will start at 09:00 and end at 17:00. Power systems as on 1090717001 (Bt=5.3T, Ip=1.0 MA) A-coil configuration: +Dtop -Dbot -Jtop +Jbot; Enabled (standard configuration) Gas Setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) leave NINJA as is DISABLED Enable the following gate valves and shutters, assuming no vacuum problems: ECE, VUV, Z-bolo Torvac setup: keep gate valves open during PULSE Specific diagnostics: Emissive probe, Bdot probes ------------------------------------------------------------------------------ ICRF Setup: all systems in run-on by 08:30 LH Setup: no DNB: no Cryopump: no ------------------------------------------------------------------------------ Run plan: Start with seg 2 of 1090717005 (1 MA, 5.4 T, 0.8e20 m-2, elong=1.6-1.7, lower triang=0.3, upper triang=0.55. Program each ICRF antenna to execute a specific staircase waveform, but with no overlap. Density scan, Btor scan, outer gap scan.

Session Leader Summaries

Entered: Aug 28 2009 06:45:43:780PM

Author: Roman Ochoukov

MP558 "Characterization of ICRF induced sheaths using emissive, Katsumata, and bdot probes" Available diagnostics: Emissive probe 3d Bdot probe Katsumata probe Probes are located on lower B side of the split AB limiter and are magnetically connected to D and E antennae. ////////////////////////////////////////////////////////////////////////////// Session summary: The purpose of this run was to determine the governing parameters that lead to high ICRF rectified DC voltages in the presence of RF. The highest observed voltages, as measured with a hot emissive probe, were +220 V in the presence of RF power from the D antenna, in L mode plasma (see shot 033). The highest voltages due to E antenna RF power are +30 V, also in L mode plasmas (shot 033). The RF power from the J antenna has the weakest effect on measured voltages, ~+10 V or lower. The DC voltages and RF signal on the bdot probes are also modified by the presence of sawteeth -- voltages spikes of up to 80 V_pp were observed (see shot 025, 030, 033). The probe response (both the bdot signals and the floating potentials of the hot emissive and katsumata probes) appears to be the weakest when plasma enters into an H-mode. The highest DC voltages are now only +25-30 V with the D antenna on (see shots 014 and 015). The plasma current scan (Ip = 0.6 -- 1.2 MA) revealed that the highest voltages occur at 1.0 and 1.2 MA during the L mode phase, and H to L transition phases in the presence of D antenna RF power (see shots 004 through 012). Voltages up to +180 V were measured. The toroidal field scans (Bt = 4.7-6.0 T) revealed that the highest voltages occur at Bt = 5.6-5.8 T (see shots 027 and 028) and correspond to +100-150 V, again in presence of D RF power. The lowest measured voltages were at 6.0 T and 4.7-5.2 T, corresponding to only +15-30 V (see shots 029-032). The linear ramp of RF power (D followed by E) at Bt = 5.4 T and Ip = 1.0 MA produced the highest observed voltages during the run with the voltages scaling with the D antenna RF power. /////////////////////////////////////////////////////////////////////////////// shot specifics: shot 001: good shot -- plasma, no RF, emissive probe is off (cold) -- V_float = -1 V 1 MA current nl_o4 = 0.8e20 1 late H mode Next: repeat with RF on: staircased with D, then E, then J steps are 0.5, 1, and 1.5 MW. Turn emissive probe on. shot 002: good shot -- plasma, RF on, emissive probe is on (hot) -- V_float = +10-20 V when E is on, +2 V when J is on Bdot signal is strongest when E is on, correlating with V_float on emiss. probe. 1 MA current nl_04 = 0.8e20 several H modes no D ant J is trippy Next: repeat with D RF on. shot 003: good shot -- plasma, RF on but no D. J was first followed by E emissive probe is on (hot) -- V_float = +10-30 V when E is on, +2 V when J is on with initial spike of +30 V before entering H mode Bdot signal is strongest when E is on, correlating with V_float on emiss. probe. 1 MA current nl_04 = 0.8e20 several H modes no D ant Next: repeat with D RF on. shot 004: good shot -- plasma, RF on, first D, then J, then E emissive probe is on (hot) -- V_float = +50-120 V when D is on, +10-20 V when J is on, and +10-20 V when E is on V_float is quietest (lowest values) when in H mode Bdot signal is strongest when D is on, followed by E, then J 1 MA current nl_04 = 0.8e20 3 H modes Next: repeat with J always on on top of D and E staircases. shot 005: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy emissive probe is on (hot) -- V_float = +25-75 V when D is on, +25 V when J is on before H mode (first antenna to be on), and +5-10 V when E is on Bdot signal is strongest when J just turns on before entering H mode 1 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: repeat with improved D coupling shot 006: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy again emissive probe is on (hot) -- V_float = +50-175 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +10-20 V when E is on Bdot signal is strongest when J just turns on before entering H mode, H mode clearly quiets Bdot and emissive probe response 1 MA current nl_04 = 0.8e20 4 H modes Next: try one more time to improve D shot 007: Disruption at 1.48 s, RF on, J always on, D staircase followed by E staircase D is trippy again emissive probe is on (hot) -- V_float = +50-150 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2-10 V when in H mode, and +10 V when E is on Bdot signal is strongest when J just turns on before entering H mode, H mode clearly quiets Bdot and emissive probe response 1 MA current nl_04 = 0.8e20 2 H modes Next: raise Ip to 1.2 MA, keep everything else same shot 008: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy emissive probe is on (hot) -- V_float = +50-150 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +5-30 V when E is on Bdot signal is strongest when J just turns on before entering H mode and when V_float spikes to +150 V when D is on. 1.2 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: repeat shot 009: good shot -- plasma, RF on, J always on, D staircase followed by E staircase emissive probe is on (hot) -- V_float = +50-200 V (spiky) when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +5 V when E is on with occasional 20 - 80 V spikes Bdot signal is strongest when J just turns on before entering H mode and when V_float spikes to +150 V when D is on. 1.2 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: make Ip = 0.8 MA, everything else same shot 010: disruption at 0.91 s, RF on, J always on, D just turned on, no E emissive probe is on (hot) -- V_float = +15 V when D is on, +20 V when J is on just before H mode (first antenna to be on) but reduces to +2 V when in H mode Bdot signal is strongest when J just turns on before entering H mode. 0.8 MA current nl_04 = 0.8e20 1 H mode Next: repeat shot 011: disruption at 1.2 s, RF on, J always on, D turned on, no E emissive probe is on (hot) -- V_float = +50-150 V when D is on, +30 V when J is on just before H mode (first antenna to be on) but reduces to +2 V when in H mode Bdot signal is strongest when J just turns on before entering H mode and during high voltage spikes when D is on. 0.8 MA current nl_04 = 0.8e20 2 H modes Next: repeat with raised strike point to avoid disruption and change D and E order (first E then D) shot 012: disruption at 1.2 s, RF on, J always on, E staircase, then D staircase emissive probe is on (hot) -- V_float = +50-150 V when D is on, +30 V when J is on just before H mode (first antenna to be on) but reduces to +5 V when in H mode, +10 V when E is on Bdot signal is strongest when J just turns on before entering H mode and during high voltage spikes when D is on. 0.8 MA current nl_04 = 0.8e20 several H modes Next: 0.6 MA Ip, same for everything else shot 013: disruption at 1.03 s, RF on, J always on, E staircase, no D emissive probe is on (hot) V_float = +10-20 V when J is on (first antenna to be on), +15-20 V when E is on Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 weak H mode Next: repeat with raised strike point shot 014: good shot -- plasma RF on, J always on, E staircase, then D staircase emissive probe is on (hot) V_float = +15-20 V when J is on (first antenna to be on), +15 V when E is on +25 V when D is on No V_float spikes, essentially flat voltage but goes up with D power Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 long H mode Next: repeat with D and E exchanged (first D then E) shot 015: good shot -- plasma RF on, J always on, D staircase, then E staircase emissive probe is on (hot) V_float = +10-20 V when J is on (first antenna to be on), +10-25 V when D is on (staircased V_float increase) +10-20 V when E is on (staircased V_float increase) No V_float spikes, staircased voltage increases when D and E are on Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 long H mode Next: raise Ip to 0.8 MA and no J ant. while keeping D and E staircased to see if we can have no H modes. shot 016: good shot -- plasma, RF on, J is off, D tripped, then E staircase emissive probe is on (hot) V_float = +5-15 V when E is on, no D and no J (V_float = +2 V) Bdot signal is strongest before H mode 0.8 MA current nl_04 = 0.8e20 1 late H mode Next: repeat shot 017: good shot -- plasma, RF on, J is off, D staircase, then E staircase emissive probe is on (hot) V_float = +20-40 V when D is on, V_float = +5V when E is on Bdot signal is strongest when E is on 0.8 MA current nl_04 = 0.8e20 no H modes Next: repeat but with increased emission on filament (I_filament up from 1.8 A to 2.0 A) shot 018: good shot -- plasma, RF on, J is off, D staircase, then E staircase. essentially no difference from shot 017 in probe signals. emissive probe is on (hot) V_float = +20-40 V when D is on, V_float = +5V when E is on Bdot signal is strongest when E is on, by a lot, no idea why 0.8 MA current nl_04 = 0.8e20 no H modes Next: increase Ip to 1.0 MA, everything else same. shot 019: good shot -- plasma, RF on, J is off, D staircase, then E staircase. late disruption at 1.6 s emissive probe is on (hot) V_float = +40-80 V (sawtooth correlated spikes) when D is on, V_float = +10-15V (much smaller sawteeth compared to D) when E is on B_phi dot probe signal correlates well with V_float on emissive probe when D is on. Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes Next: increase Ip to 1.2 MA, everything else same. shot 020: good shot -- plasma, RF on, J is off, D staircase, no E. disruption at 1.16 s emissive probe is on (hot) V_float = +40-180 V (sawtooth correlated spikes) when D is on, no E Appears to have little correlation between Bdot and emissive probe signals Sawteeth on Bdot probes as well. 1.2 MA current nl_04 = 0.8e20 no H modes Next: repeat shot 021: good shot -- plasma, RF on, J is off, D staircase, no E. disruption at 1.16 s emissive probe is on (hot) V_float = +40-150 V (sawtooth correlated spikes) when D is on, no E Appears to have little correlation between Bdot and emissive probe signals Sawteeth on Bdot probes as well. 1.2 MA current nl_04 = 0.8e20 no H modes very similar to shot 020 Next: repeat but switch D and E (E first) shot 022: disrupt., J is off, no D, no E. very early disruption at 0.54 s Next: repeat but increase nl_04 to 0.9e20 shot 023: disrupt., J is off, no D, no E. very early disruption at 0.59 s Next: Bring Ip down to 1.0 MA, nl_04 down to 0.8e20, run emissive probe cold shot 024: good shot -- plasma, RF on, J is off, D staircase, then E staircase. late disruption at 1.57 s. emissive probe is off (cold) V_float = -3 V when D is on, V_float = -2 V when E is on Bdot signal is about same between D and E 1.0 MA current nl_04 = 0.8e20 no H modes Next: repeat but with J on top of D and E, emiss. filament is on (I_filament = 2.0 A) shot 025: good shot -- plasma, RF on, J is on all time, D staircase, then E staircase. late disruption at 1.64 s emissive probe is on (hot) V_float = +30-60 V (sawtooth correlated spikes) when D is on, V_float = +15-20V (much smaller sawteeth compared to D) when E is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes similar in signal shape (but lower in magnitude) to shot019 except for spike when J turns on Next: drop Ip to 0.8 MA, increase nl_04 to 1e20 shot 026: good shot -- plasma, RF on, J is off, D tripped, then E staircase emissive probe is on (hot) V_float = +5-10V when E is on Strong Bdot signal but very low V_float before H mode. Bdot signal drops when plasma enters H mode as expected. Sawteeth on Bdot probes as well. 0.8 MA current nl_04 = 1.0e20 1 very late H mode Next: back to inner wall limited, Ip = 1.0 MA, nl_04 = 0.8e20, Bt up to 5.6 T (from 5.4 T), same as shot 025 but at 5.6 T. shot 027: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +20-100 V (spiky sawteeth) when D is on V_float = +10V when E is on B_phi bdot probe correlates with V_float Bdot signal is bigger when D is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes Next: Bt up to 5.8 T shot 028: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +50-130 V (spiky sawteeth) when D is on V_float = +10-20V when E is on B_p bdot probe correlates with V_float Bdot signal is bigger when D is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 Bt = 5.8 T no H modes Next: Bt up to 6.0 T. shot 029: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disrupt. at 1.66 s emissive probe is on (hot) V_float = +10-25 V when D is on V_float = +5-15V when E is on Bdot signal is correlated with D but not E RF power 1.0 MA current nl_04 = 0.8e20 Bt = 6.0 T no H modes Next: Bt down to 5.2 T shot 030: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disrupt. at 1.60 s emissive probe is on (hot) V_float = +20-40 V when D is on V_float = +20-25V when E is on Bdot signal is correlated with D but not E RF power Bdot signal is strongest when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.2 T no H modes Next: Bt down to 5.0 T shot 031: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +10-25 V when D is on V_float = +10-15V when E is on Bdot signal is strongest when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.0 T no H modes Next: Bt down to 4.7 T shot 032: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disruption at 1.60 s emissive probe is on (hot) V_float = +20-40 V when D is on V_float = +15-30V when E is on Bdot signal is strongest when E is on Bdot signal is correlated with RF when E is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.0 T no H modes Next shot: 1 MA, 5.4 T, ramping D and E power shot 033: good shot -- plasma, RF on, J is off, D ramped up, then E ramped up late disruption at 1.61 s Very large sawteeth on Bdot and emissive probes signals emissive probe is on (hot) V_float = ramps from +40 to +200 V when D is on V_float = ramps from +10 to +15 V when E is on Bdot signal is strongest when D is on Bdot signal is correlated with RF when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.4 T no H modes Last shot of this run

Physics Operator Summaries

Entered: Aug 28 2009 10:22:51:273PM

Author: Robert Granetz

Run summary for Friday 2009/08/28 MP558 - Characterization of ICRF sheaths Session leaders: R. Ochoukov Physics operator: R. Granetz This run involved measurements with the emissive probe and the bdot probes to look at RF sheaths over a range of plasma current and toroidal field, in both diverted (H-mode) and limited (L-mode) configurations. The D and E antenna power was scanned in a staircase pattern on each shot. J-antenna was run mostly at constant power in the diverted plasmas, and was not used in the limited plasmas. RF performance today was very reliable. The run was quite successful. Note that the latest boronization was a full week ago, and we're going to repeat this run next week immediately after a boronization in order to compare results. The machine ran flawlessly today. There were no fizzles, duds, power supply problems, or computer problems. One operational thing that we noted today is that limited plasmas are much more susceptible to locked mode disruptions compared to diverted plasmas. Possibly our error field calculations need to be improved. Scorecard: 33 plasmas 0 duds 0 fizzles 0 power supply tests 0 no-power MDS shot cycles -------------- Total: 33 shot cycles (100% reliability)

Session Leader Comments
Aug 28 2009 09:10:56:050AM	1090828001	Roman Ochoukov	shot 001: good shot -- plasma, no RF, emissive probe is off (cold) -- V_float = -1 V 1 MA current nl_o4 = 0.8e20 1 late H mode Next: repeat with RF on: staircased with D, then E, then J steps are 0.5, 1, and 1.5 MW. Turn emissive probe on.
Aug 28 2009 09:35:27:687AM	1090828002	Roman Ochoukov	shot 002: good shot -- plasma, RF on, emissive probe is on (hot) -- V_float = +10-20 V when E is on, +2 V when J is on Bdot signal is strongest when E is on, correlating with V_float on emiss. probe. 1 MA current nl_04 = 0.8e20 several H modes no D ant J is trippy Next: repeat with D RF on.
Aug 28 2009 09:45:25:940AM	1090828003	Roman Ochoukov	shot 003: good shot -- plasma, RF on but no D. J was first followed by E emissive probe is on (hot) -- V_float = +10-30 V when E is on, +2 V when J is on with initial spike of +30 V before entering H mode Bdot signal is strongest when E is on, correlating with V_float on emiss. probe. 1 MA current nl_04 = 0.8e20 several H modes no D ant Next: repeat with D RF on.
Aug 28 2009 10:02:09:180AM	1090828004	Roman Ochoukov	shot 004: good shot -- plasma, RF on, first D, then J, then E emissive probe is on (hot) -- V_float = +50-120 V when D is on, +10-20 V when J is on, and +10-20 V when E is on V_float is quietest (lowest values) when in H mode Bdot signal is strongest when D is on, followed by E, then J 1 MA current nl_04 = 0.8e20 3 H modes Next: repeat with J always on on top of D and E staircases.
Aug 28 2009 10:17:18:077AM	1090828005	Roman Ochoukov	shot 005: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy emissive probe is on (hot) -- V_float = +25-75 V when D is on, +25 V when J is on before H mode (first antenna to be on), and +5-10 V when E is on Bdot signal is strongest when J just turns on before entering H mode 1 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: repeat with improved D coupling
Aug 28 2009 10:46:04:883AM	1090828006	Roman Ochoukov	shot 006: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy again emissive probe is on (hot) -- V_float = +50-175 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +10-20 V when E is on Bdot signal is strongest when J just turns on before entering H mode, H mode clearly quiets Bdot and emissive probe response 1 MA current nl_04 = 0.8e20 4 H modes Next: try one more time to improve D
Aug 28 2009 10:45:34:197AM	1090828007	Roman Ochoukov	shot 007: Disruption at 1.48 s, RF on, J always on, D staircase followed by E staircase D is trippy again emissive probe is on (hot) -- V_float = +50-150 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2-10 V when in H mode, and +10 V when E is on Bdot signal is strongest when J just turns on before entering H mode, H mode clearly quiets Bdot and emissive probe response 1 MA current nl_04 = 0.8e20 2 H modes Next: raise Ip to 1.2 MA, keep everything else same
Aug 28 2009 10:59:04:967AM	1090828008	Roman Ochoukov	shot 008: good shot -- plasma, RF on, J always on, D staircase followed by E staircase D is trippy emissive probe is on (hot) -- V_float = +50-150 V when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +5-30 V when E is on Bdot signal is strongest when J just turns on before entering H mode and when V_float spikes to +150 V when D is on. 1.2 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: repeat
Aug 28 2009 11:14:41:957AM	1090828009	Roman Ochoukov	shot 009: good shot -- plasma, RF on, J always on, D staircase followed by E staircase emissive probe is on (hot) -- V_float = +50-200 V (spiky) when D is on, +25 V when J is on before H mode (first antenna to be on) but reduces to +2 V when in H mode, and +5 V when E is on with occasional 20 - 80 V spikes Bdot signal is strongest when J just turns on before entering H mode and when V_float spikes to +150 V when D is on. 1.2 MA current nl_04 = 0.8e20 several H modes on top of one large H mode Next: make Ip = 0.8 MA, everything else same
Aug 28 2009 11:28:31:493AM	1090828010	Roman Ochoukov	shot 010: disruption at 0.91 s, RF on, J always on, D just turned on, no E emissive probe is on (hot) -- V_float = +15 V when D is on, +20 V when J is on just before H mode (first antenna to be on) but reduces to +2 V when in H mode Bdot signal is strongest when J just turns on before entering H mode. 0.8 MA current nl_04 = 0.8e20 1 H mode Next: repeat
Aug 28 2009 11:44:48:017AM	1090828011	Roman Ochoukov	shot 011: disruption at 1.2 s, RF on, J always on, D turned on, no E emissive probe is on (hot) -- V_float = +50-150 V when D is on, +30 V when J is on just before H mode (first antenna to be on) but reduces to +2 V when in H mode Bdot signal is strongest when J just turns on before entering H mode and during high voltage spikes when D is on. 0.8 MA current nl_04 = 0.8e20 2 H modes Next: repeat with raised strike point to avoid disruption and change D and E order (first E then D)
Aug 28 2009 11:54:57:067AM	1090828012	Roman Ochoukov	shot 012: disruption at 1.2 s, RF on, J always on, E staircase, then D staircase emissive probe is on (hot) -- V_float = +50-150 V when D is on, +30 V when J is on just before H mode (first antenna to be on) but reduces to +5 V when in H mode, +10 V when E is on Bdot signal is strongest when J just turns on before entering H mode and during high voltage spikes when D is on. 0.8 MA current nl_04 = 0.8e20 several H modes Next: 0.6 MA Ip, same for everything else
Aug 28 2009 12:07:08:307PM	1090828013	Roman Ochoukov	shot 013: disruption at 1.03 s, RF on, J always on, E staircase, no D emissive probe is on (hot) V_float = +10-20 V when J is on (first antenna to be on), +15-20 V when E is on Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 weak H mode Next: repeat with raised strike point
Aug 28 2009 12:20:09:437PM	1090828014	Roman Ochoukov	shot 014: good shot -- plasma RF on, J always on, E staircase, then D staircase emissive probe is on (hot) V_float = +15-20 V when J is on (first antenna to be on), +15 V when E is on +25 V when D is on No V_float spikes, essentially flat voltage but goes up with D power Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 long H mode Next: repeat with D and E exchanged (first D then E)
Aug 28 2009 12:41:36:600PM	1090828015	Roman Ochoukov	shot 015: good shot -- plasma RF on, J always on, D staircase, then E staircase emissive probe is on (hot) V_float = +10-20 V when J is on (first antenna to be on), +10-25 V when D is on (staircased V_float increase) +10-20 V when E is on (staircased V_float increase) No V_float spikes, staircased voltage increases when D and E are on Bdot signal is strongest when J just turns on before entering H mode and quiets when in H mode 0.6 MA current nl_04 = 0.8e20 1 long H mode Next: raise Ip to 0.8 MA and no J ant. while keeping D and E staircased to see if we can have no H modes.
Aug 28 2009 12:54:57:263PM	1090828016	Roman Ochoukov	shot 016: good shot -- plasma, RF on, J is off, D tripped, then E staircase emissive probe is on (hot) V_float = +5-15 V when E is on, no D and no J (V_float = +2 V) Bdot signal is strongest before H mode 0.8 MA current nl_04 = 0.8e20 1 late H mode Next: repeat
Aug 28 2009 01:16:22:920PM	1090828017	Roman Ochoukov	shot 017: good shot -- plasma, RF on, J is off, D staircase, then E staircase emissive probe is on (hot) V_float = +20-40 V when D is on, V_float = +5V when E is on Bdot signal is strongest when E is on 0.8 MA current nl_04 = 0.8e20 no H modes Next: repeat but with increased emission on filament (I_filament up from 1.8 A to 2.0 A)
Aug 28 2009 01:27:50:987PM	1090828018	Roman Ochoukov	shot 018: good shot -- plasma, RF on, J is off, D staircase, then E staircase essentially no difference from shot 017 in probe signals. emissive probe is on (hot) V_float = +20-40 V when D is on, V_float = +5V when E is on Bdot signal is strongest when E is on, by a lot, no idea why 0.8 MA current nl_04 = 0.8e20 no H modes Next: increase Ip to 1.0 MA, everything else same.
Aug 28 2009 01:45:22:993PM	1090828019	Roman Ochoukov	shot 019: good shot -- plasma, RF on, J is off, D staircase, then E staircase late disruption at 1.6 s emissive probe is on (hot) V_float = +40-80 V (sawtooth correlated spikes) when D is on, V_float = +10-15V (much smaller sawteeth compared to D) when E is on B_phi dot probe signal correlates well with V_float on emissive probe when D is on. Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes Next: increase Ip to 1.2 MA, everything else same.
Aug 28 2009 02:00:45:060PM	1090828020	Roman Ochoukov	shot 020: good shot -- plasma, RF on, J is off, D staircase, no E disruption at 1.16 s emissive probe is on (hot) V_float = +40-180 V (sawtooth correlated spikes) when D is on, no E Appears to have little correlation between Bdot and emissive probe signals Sawteeth on Bdot probes as well. 1.2 MA current nl_04 = 0.8e20 no H modes Next: repeat
Aug 28 2009 02:12:50:473PM	1090828021	Roman Ochoukov	shot 021: good shot -- plasma, RF on, J is off, D staircase, no E disruption at 1.16 s emissive probe is on (hot) V_float = +40-150 V (sawtooth correlated spikes) when D is on, no E Appears to have little correlation between Bdot and emissive probe signals Sawteeth on Bdot probes as well. 1.2 MA current nl_04 = 0.8e20 no H modes very similar to shot 020 Next: repeat but switch D and E (E first)
Aug 28 2009 02:26:30:057PM	1090828022	Roman Ochoukov	shot 022: disrupt., J is off, no D, no E very early disruption at 0.54 s Next: repeat but increase nl_04 to 0.9e20
Aug 28 2009 02:39:09:890PM	1090828023	Roman Ochoukov	shot 023: disrupt., J is off, no D, no E very early disruption at 0.59 s Next: Bring Ip down to 1.0 MA, nl_04 down to 0.8e20, run emissive probe cold
Aug 28 2009 02:54:10:613PM	1090828024	Roman Ochoukov	shot 024: good shot -- plasma, RF on, J is off, D staircase, then E staircase late disruption at 1.57 s. emissive probe is off (cold) V_float = -3 V when D is on, V_float = -2 V when E is on Bdot signal is about same between D and E 1.0 MA current nl_04 = 0.8e20 no H modes Next: repeat but with J on top of D and E, emiss. filament is on (I_filament = 2.0 A)
Aug 28 2009 03:17:53:560PM	1090828025	Roman Ochoukov	shot 025: good shot -- plasma, RF on, J is on all time, D staircase, then E staircase late disruption at 1.64 s emissive probe is on (hot) V_float = +30-60 V (sawtooth correlated spikes) when D is on, V_float = +15-20V (much smaller sawteeth compared to D) when E is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes similar in signal shape (but lower in magnitude) to shot019 except for spike when J turns on Next: drop Ip to 0.8 MA, increase nl_04 to 1e20
Aug 28 2009 03:30:25:707PM	1090828026	Roman Ochoukov	shot 026: good shot -- plasma, RF on, J is off, D tripped, then E staircase emissive probe is on (hot) V_float = +5-10V when E is on Strong Bdot signal but very low V_float before H mode. Bdot signal drops when plasma enters H mode as expected. Sawteeth on Bdot probes as well. 0.8 MA current nl_04 = 1.0e20 1 very late H mode Next: back to inner wall limited, Ip = 1.0 MA, nl_04 = 0.8e20, Bt up to 5.6 T (from 5.4 T), same as shot 025 but at 5.6 T.
Aug 28 2009 04:41:09:000PM	1090828027	Roman Ochoukov	shot 027: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +20-100 V (spiky sawteeth) when D is on V_float = +10V when E is on B_phi bdot probe correlates with V_float Bdot signal is bigger when D is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 no H modes Next: Bt up to 5.8 T
Aug 28 2009 04:41:28:890PM	1090828028	Roman Ochoukov	shot 028: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +50-130 V (spiky sawteeth) when D is on V_float = +10-20V when E is on B_p bdot probe correlates with V_float Bdot signal is bigger when D is on Sawteeth on Bdot probes as well. 1.0 MA current nl_04 = 0.8e20 Bt = 5.8 T no H modes Next: Bt up to 6.0 T
Aug 28 2009 04:42:20:157PM	1090828029	Roman Ochoukov	shot 029: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disrupt. at 1.66 s emissive probe is on (hot) V_float = +10-25 V when D is on V_float = +5-15V when E is on Bdot signal is correlated with D but not E RF power 1.0 MA current nl_04 = 0.8e20 Bt = 6.0 T no H modes Next: Bt down to 5.2 T
Aug 28 2009 04:41:51:233PM	1090828030	Roman Ochoukov	shot 030: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disrupt. at 1.60 s emissive probe is on (hot) V_float = +20-40 V when D is on V_float = +20-25V when E is on Bdot signal is correlated with D but not E RF power Bdot signal is strongest when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.2 T no H modes Next: Bt down to 5.0 T
Aug 28 2009 04:42:43:610PM	1090828031	Roman Ochoukov	shot 031: good shot -- plasma, RF on, J is off, D staircased, then E staircase emissive probe is on (hot) V_float = +10-25 V when D is on V_float = +10-15V when E is on Bdot signal is strongest when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.0 T no H modes Next: Bt down to 4.7 T
Aug 28 2009 05:02:22:740PM	1090828032	Roman Ochoukov	shot 032: good shot -- plasma, RF on, J is off, D staircased, then E staircase late disruption at 1.60 s emissive probe is on (hot) V_float = +20-40 V when D is on V_float = +15-30V when E is on Bdot signal is strongest when E is on Bdot signal is correlated with RF when E is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.0 T no H modes Next shot: 1 MA, 5.4 T, ramping D and E power
Aug 28 2009 05:13:19:997PM	1090828033	Roman Ochoukov	shot 033: good shot -- plasma, RF on, J is off, D ramped up, then E ramped up late disruption at 1.61 s Very large sawteeth on Bdot and emissive probes signals emissive probe is on (hot) V_float = ramps from +40 to +200 V when D is on V_float = ramps from +10 to +15 V when E is on Bdot signal is strongest when D is on Bdot signal is correlated with RF when D is on 1.0 MA current nl_04 = 0.8e20 Bt = 5.4 T no H modes Last shot of this run

Physics Operator Comments
Aug 28 2009 09:18:19:290AM		Robert Granetz	Setup seg 2 from seg 2 of shot 1090717005 (1 MA, 5.4 T, 0.8e20 m-2, specific shape parameters.
Aug 28 2009 09:10:57:033AM	1090828001	Robert Granetz	Shot 01 -- Plasma, full length. 1.0 MA, 5.4 T, 0.8e20 m-2, elong=1.68, lower triang=0.50, upper triang=0.25. RF not enabled yet. This equilibrium is acceptable for the session leader. There was an ohmic H-mode late in the flattop (t>1.3 s). Next shot: repeat, with RF in specific staircase waveform.
Aug 28 2009 09:27:48:900AM	1090828002	Robert Granetz	Shot 02 -- Plasma, full length. Good staircase power waveform on E-port; J staircase was partially successful. D-port still needs some work before it can be turned on. Several H-modes. Next shot: repeat; get D-port on
Aug 28 2009 09:50:59:880AM	1090828003	Robert Granetz	Shot 03 -- Plasma, full length. Got J and E staircases. D is still being worked on. Next shot: repeat, this time definitely with D-port on.
Aug 28 2009 10:05:34:620AM	1090828004	Robert Granetz	Shot 04 -- Plasma, full length. All three antennas executed good power staircase waveforms (with no overlap). 3 H-modes. Target nl_04=0.8e20 m-2. Next shot: repeat; change RF antenna ordering, programming, and overlap.
Aug 28 2009 10:19:42:547AM	1090828005	Robert Granetz	Shot 05 -- Plasma, full length. Lots of H-modes. Prf_J=1.6 for 0.9 s. D and E executed staircases while J was one steady. Next shot: tweaking the RF; no DPCS changes
Aug 28 2009 10:33:10:113AM	1090828006	Robert Granetz	Shot 06 -- Plasma, full length. J on steady for entire flattop, D & E staircases. Some faulting. Multiple H-modes. Next shot: repeat to see if we can improve RF faulting; no DPCS changes
Aug 28 2009 10:41:46:587AM	1090828007	Robert Granetz	Shot 07 -- Plasma, disrupted at t=1.48 s. Metallic injection. J and E worked well, D faulted at the highest power. Next shot: raise Ip to 1.2 MA; keep nl_04 at 0.8e20 m-2.
Aug 28 2009 10:57:21:467AM	1090828008	Robert Granetz	Shot 08 -- Plasma, full length. Ip=1.2 MA. Lots of short H-modes. Next shot: repeat, no changes
Aug 28 2009 11:13:14:677AM	1090828009	Robert Granetz	Shot 09 -- Plasma, full length. 1.2 MA. J-port faulting more. Next shot: decrease Ip to 0.8 MA; keep nl_04=0.8e20 m-2
Aug 28 2009 11:26:43:197AM	1090828010	Robert Granetz	Shot 10 -- Plasma, disrupted at t=0.91 s due to high-Z injection at t=0.90 s. We'll have to repeat this shot. Next shot: repeat, no changes (0.8 MA)
Aug 28 2009 11:41:58:640AM	1090828011	Robert Granetz	Shot 11 -- Plasma, disrupted at t=1.2 s due to injection at t=1.16 s. Next shot: raise ZXL by about 3.5 cm (to +0.020 m) to get strike point above W tiles.
Aug 28 2009 11:53:01:800AM	1090828012	Robert Granetz	Shot 12 -- Plasma, full length. 0.8 MA. Multiple H-modes. No injections, which might mean that raising ZXL on this shot actually solved the problem. Very good RF performance. Next shot: reduce Ip to 0.6 MA.
Aug 28 2009 12:08:02:277PM	1090828013	Robert Granetz	Shot 13 -- Plasma, disrupted at t=1.03 s due to high-Z injection at t=0.99 s. 0.6 MA. The strike point dropped a bit at this lower plasma current. Next shot: raise ZXL another 1 cm.
Aug 28 2009 12:22:12:000PM	1090828014	Robert Granetz	Shot 14 -- Plasma, full length. 0.6 MA. Nice RF performance. One long H-mode. Next shot: no DPCS changes; swap D & E timing.
Aug 28 2009 12:44:18:773PM	1090828015	Robert Granetz	Shot 15 -- Plasma, full length. 0.6 MA. Good RF performance. One long H-mode. Early hard x-rays. Next shot: set Ip at 0.8 MA; switch to inner wall limited in order to stay in L-mode. (set CLEARIN at -0.015 m and ZXL at -.005 m)
Aug 28 2009 12:57:38:083PM	1090828016	Robert Granetz	Shot 16 -- Plasma, full length. 0.8 MA. Plasma is limited until about 1.3 s, and this results in an H-mode after t=1.3 s. Next shot: tweak CLEARIN to stay limited throughout the flattop.
Aug 28 2009 01:13:28:450PM	1090828017	Robert Granetz	Shot 17 -- Plasma, full length. 0.8 MA, limited, L-mode. Good RF. nl_04=0.8e20 m-2. No J power (on purpose). Next shot: repeat, no DPCS changes
Aug 28 2009 01:26:35:830PM	1090828018	Robert Granetz	Shot 18 -- Plasma, full length. 0.8 MA, 0.8e20 m-2, limited, L-mode. Good RF performance. Next shot: raise Ip to 1.0 MA
Aug 28 2009 01:41:38:960PM	1090828019	Robert Granetz	Shot 19 -- Plasma, disrupted at t=1.60 s. 1.0 MA, limited, no H-modes, good RF. Next shot: raise Ip to 1.2 MA
Aug 28 2009 01:59:48:843PM	1090828020	Robert Granetz	Shot 20 -- Plasma, disrupted at t=1.16 s. Not sure why. 1.2 MA, limited. Next shot: tweak CLEARIN to keep plasma against inboard wall.
Aug 28 2009 02:16:47:053PM	1090828021	Robert Granetz	Shot 21 -- Plasma, disrupted at t=1.16 s again. Identical to the preceding shot. The sawteeth get very small and ragged for 20 ms before the disruption, but I think they're still there. Next shot: no DPCS changes; swap D & E timings
Aug 28 2009 02:24:16:913PM	1090828022	Robert Granetz	Shot 22 -- Plasma, disrupted at t=0.54 s. Looks like 2 small injections just before the disruption. Next shot: increase nl_04 a bit to 0.9e20 m-2
Aug 28 2009 02:43:37:687PM	1090828023	Robert Granetz	Shot 23 -- Plasma, disrupted at t=0.59 s. Looks like a locked mode. Next shot: set Ip at 1.0 MA; put nl_04 back at 0.8e20 m-2
Aug 28 2009 02:55:20:050PM	1090828024	Robert Granetz	Shot 24 -- Plasma, disrupted at t=1.57 s. 1.0 MA, limited. Good RF. The sawteeth disappear again just before the disruption, so maybe this is another locked mode. Apparently the error fields are different in limited discharges compared to diverted discharges, and we're not compensating them properly. Next shot: no DPCS changes; modify the RF waveform programming
Aug 28 2009 03:06:38:743PM	1090828025	Robert Granetz	Shot 25 -- Plasma, disrupted at t=1.64 s. 1.0 MA, limited. Good RF. Looks like another locked mode disruption, but it's too late in the shot to matter. Next shot: change back to diverted, 0.8 MA, and set nl_04 to 1.0e20 m-2. Reload shot 12 from earlier today and change the density
Aug 28 2009 03:30:27:300PM	1090828026	Robert Granetz	Shot 26 -- Plasma, full length. 0.8 MA, DIVERTED. Maybe there's a problem with our error field compensation which manifests itself on limited discharges. Only E antenna ran on this shot. One brief H-mode late in the flattop. J-port transmitter has a problem which won't be resolved before this run ends. Next shot: change back to inner wall limited, 1.0 MA, 0.8e20 m-2, and Btor=5.6 T (158.5 kA). I reloaded shot 25 from today and changed I_TF in seg 2.
Aug 28 2009 03:44:27:413PM	1090828027	Robert Granetz	Shot 27 -- Plasma, full length. 1.0 MA, limited, AND 5.6 T. Good RF. Next shot: increase Btor to 5.8 T (164.1 kA); keep everything else the same. Note that the TF PLC limit will be raised from 165 to 170 kA.
Aug 28 2009 03:54:44:247PM	1090828028	Robert Granetz	Shot 28 -- Plasma, full length. 1.0 MA, limited, Btor=5.8 T. Good RF Next shot: raise Btor to 6.0 T (169.9 kA); keep all else the same
Aug 28 2009 04:09:56:690PM	1090828029	Robert Granetz	Shot 29 -- Plasma, disrupted at t=1.66 s. 1.0 MA, 6.0 T, limited. Lots of hard x-rays. The disruption is too late to matter, but it does look like another locked mode. Next shot: change Btor to 5.2 T (147.1 kA); keep all else the same
Aug 28 2009 04:28:33:370PM	1090828030	Robert Granetz	Shot 30 -- Plasma, disrupted at t=1.60 s. 1.0 MA, 5.2 T, limited. Good RF. Another locked mode disruption. Next shot: decrease Btor to 5.0 T; keep all else the same
Aug 28 2009 04:41:47:920PM	1090828031	Robert Granetz	Shot 31 -- Plasma, full length. 1.0 MA, 5.0 T, limited. Good RF. Next shot: decrease Btor to 4.7 (133.0 kA), keep all else the same
Aug 28 2009 04:57:29:503PM	1090828032	Robert Granetz	Shot 32 -- Plasma, disrupted at t=1.60 s. 1.0 MA, 4.75 T, limited. Lots of early hard x-rays. Good RF. Next shot: set Btor back at 5.4 T; all else the same (1.0 MA, 0.8e20 m-2, limited)
Aug 28 2009 05:07:45:900PM	1090828033	Robert Granetz	Shot 33 -- Plasma, disrupted at t=1.62 s. 1.0 MA, 5.4 T, 0.8e20 m-2, limited. D & E ramped this time, rather than staircase. Good RF. End of run

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:03:53:390AM	Plasma	Ok
2	09:20:05:850AM	Plasma	Ok
3	09:35:31:153AM	Plasma	Ok
4	09:52:40:677AM	Plasma	Ok
5	10:07:08:980AM	Plasma	Ok
6	10:22:05:187AM	Plasma	Ok
7	10:36:03:647AM	Plasma	Ok
8	10:49:19:777AM	Plasma	Ok
9	11:04:59:453AM	Plasma	Ok
10	11:19:03:583AM	Plasma	Ok
11	11:31:59:607AM	Plasma	Ok
12	11:44:44:170AM	Plasma	Ok
13	11:59:07:520AM	Plasma	Ok
14	12:12:09:043PM	Plasma	Ok
15	12:28:30:003PM	Plasma	Ok
16	12:45:24:117PM	Plasma	Ok
17	01:03:20:560PM	Plasma	Ok
18	01:19:48:843PM	Plasma	Ok
19	01:35:10:210PM	Plasma	Ok
20	01:49:53:180PM	Plasma	Ok
21	02:04:20:673PM	Plasma	Ok
22	02:19:08:507PM	Plasma	Ok
23	02:32:06:950PM	Plasma	Ok
24	02:44:45:033PM	Plasma	Ok
25	02:57:19:177PM	Plasma	Ok
26	03:16:43:653PM	Plasma	Ok
27	03:31:02:753PM	Plasma	Ok
28	03:47:01:820PM	Plasma	Ok
29	04:02:26:577PM	Plasma	Ok
30	04:20:00:583PM	Plasma	Ok
31	04:34:30:463PM	Plasma	Ok
32	04:49:26:860PM	Plasma	Ok
33	05:02:31:943PM	Plasma	Ok

System Availability

Aug 28 2009 09:03:33:970AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna sears,snipes BES yes 7 horizontal views spread out R_maj=[0.72-0.9m], 3 cm over the tokamak midplane (beam) Jul 09 2009 05:12PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes 2pi (diode+foil), AXA, AXJ, WB3AX, WB4AX, LEDGE-AX working fine. MID-FOILS working fine. The LEDGE/DIV foils still need calibrations applied Aug 27 2009 09:09AM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no Bottle Removed from the Cell, Piezo box on Igloo Removed. System in safe mode for In-Vessel Access May 30 2008 02:25PM (dekow) Jim Irby Boronization dekow,irby CNPA no Single channel CNPA available as of 12/1707 Jun 10 2009 10:22AM (twf) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor no Cyopump hardware is not yet reinstalled in the cell. Jul 14 2009 09:21PM (labombard) Brian LaBombard Upper Divertor Cryopump irby,labombard CXRS yes The wide-view toroidal array was installed, spatially and absolutely calibrated. There are 7 toroidal chords intersect the beam at the major_R_range=[74.2:83.6]cm. Spatial resolution: 1.2 cm. The F-top wide-view poloidal array was installed and spatially calibrated. There are 19 chords intersect the beam at the major_R_range=[0.65:0.9.]m. Spatial resolution: 1.22 cm. Jul 09 2009 05:16PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa yes system is aligned and operating; not yet calibrated Jul 14 2009 02:22PM (marmar) Earl Marmar Visible Bremsstrahlung marmar Disruption Mitigation no safely disabled; ready to be dismantled May 28 2008 10:22AM (granetz) Robert Granetz Gas Jet granetz,whyte Divertor IR no   Mar 06 2007 10:50AM  Glen Wurden Divertor IR Digital Video gwurden,terry Divertor IR Spectroscopy no   Mar 06 2007 10:51AM  Glen Wurden Divertor IR Spectroscopy gwurden,terry DNB no power locked & tagged out; gate valve disabled May 28 2008 10:03AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,gung ECDC no 6/10/09 Magnetron relocated to west wall in cell at H-port. All controls and hardware have been installed but need to be tested prior to full operation. Magnetron Unplugged and Red tagged, PEI breaker red tagged, Safe for In-Vessel Activity Jun 10 2009 02:35PM (dekow) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE yes The lower freq. 16 channels are ready. Still need calibration and signal level adjustments Jul 14 2009 12:15PM (phillips) Perry Phillips Heterodyne ECE-32 channels phillips G-Side Ratiomatic yes Gauge installed. Controller repaired. Aug 23 2009 10:36PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no 6/10/09: Paddles meggered at 1000 v to machine ground (>300 Mohm) prior to closing the vacuum chamber. Plugs for Power Supply and Controls Unplugged and Red Tagged, Safe for In-Vessel Access Jun 10 2009 01:47PM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPC2 yes Most channels operational. Jul 28 2009 04:23PM (hubbard) Amanda Hubbard ECE Polychromater hubbard,schmidt GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes poses no safety hazard for people working around the machine Jun 18 2009 01:04PM (marmar) Earl Marmar H/D Ratio marmar HEAT no Disconnect switch is open, reg tagged and locked. Shunt Trip Breaker is opened. Safe for in-vessel work. Jun 04 2008 12:24PM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed and tested Jun 17 2009 11:54AM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes currently only one detector is operational, off-axis He-like argon emission Jul 14 2009 10:01AM (rice) John Rice High Resolution X-Ray ince,rice HXR no In safe mode (high voltage turned off) May 27 2008 09:19PM (schmidt) Ron Parker Hard X-Ray Array parker,schmidt ICRF D-Antenna yes operational at 80 MHz Jul 21 2009 04:49PM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna yes antenna and FFT operational Jul 21 2009 04:49PM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna yes available for conditioning and testing Jul 21 2009 04:50PM (wukitch) Steve Wukitch J-port antenna wukitch,ylin Lower Hybrid no Breaker locked and tagged out. Waveguide disassembly started. Open Waveguides have been shorted. May 28 2008 09:47AM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane, WB4-LY, LEDGE-LY all collecting data. WB1-LY not attached. Aug 27 2009 09:10AM (mlreinke) Matt Reinke Lyman alpha cameras labombard,mlreinke McPherson yes Operating normally Aug 27 2009 09:10AM (mlreinke) Jim Terry VUV Spectrometer mlreinke,terry Michelson yes Operational. Recalibrated 7/27/09. Jul 28 2009 04:22PM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes Gauges are on. B-bottom is not operating - bad sensor head? Jul 14 2009 09:12PM (labombard) Brian LaBombard Baratron pressure gauges labombard MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE no As of 6/10/09, MSE is calibrated & ready to go. Awaiting DNB. Jun 10 2009 10:34AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes Neutron detectors are calibrated and ready to go. Voltages will be turned on prior to first plasma. Jun 10 2009 10:35AM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes Operational --- Uncalibrated and needs to be positioned at port Jun 25 2009 05:08PM (irby) Jim Irby X-Ray/Neutron Detector at K-Hor irby NINJA no Capillaries were tested in-vessel. Plenum has a leak and needs fixing. Jul 14 2009 09:14PM (labombard) Brian LaBombard NINJA gas puff labombard,terry PCI yes System operable. Channel 7 is dead. Aug 21 2009 06:49PM (ntsujii) Miklos Porkolab Phase Contrast Imaging arai,edlund,ennever,ntsujii,porkolab Penning Gauges yes High voltage is enabled (on during INIT, off during RECOOL). Jun 30 2009 09:42PM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter no Safe for Machine Entry Sep 14 2007 12:17PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes Checked and Operational as of 06/18/09 Jun 19 2009 08:04AM (irby) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes Operational ---- ECDC running as required Jun 19 2009 08:06AM (irby) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes Checked out and ready for Magnet Tests as of 06/18/09 Jun 19 2009 08:07AM (irby) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Array is operational with new cPCI data system. Probe 14 has open circuit. Jul 14 2009 09:17PM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH no LH launcher not installed. Cables are unplugged at the A-port rack. Jul 14 2009 09:16PM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes Array is operational with new cPCI data system. Jul 14 2009 09:16PM (labombard) Brian LaBombard Outer Lower Divertor Probe Array labombard Probe Array - UDIV yes Array is operational with new cPCI data system. Probe 13 has a bad cable (open). Jul 14 2009 09:17PM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes Since 1090824xxx, all channels are operational. Aug 25 2009 09:31AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Probe is operational. Needs plasma conditioning. Jul 14 2009 09:18PM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes System connected to A-port WASP. Needs plasma testing. Jul 14 2009 09:19PM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Sparker yes Sparker now at K-Hor. Set for 100 uA of current. Will up to 200 uA before first plasma Jun 18 2009 01:01PM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin TCI yes System restarted and aligned. Several chords available including NL04. Density Feedback available. Ready for plasma. Jun 18 2009 09:15AM (murray) Jim Irby Two-Color Interferometer irby,murray TS - Core yes 2 lasers working. 15 spatial channels operational. Initial (NOT final) Te calibration applied. ***No ne calibration yet*** Aug 05 2009 08:44AM (jwhughes) Jerry Hughes Core Thomson scattering jwhughes,yma,zhang TS - Edge yes Operational, Te calibration is thought to be good. Density is ***uncalibrated*** Aug 11 2009 02:31PM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jwhughes,yma,zhang Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XTOMO yes Operating normally Aug 27 2009 09:10AM (mlreinke) Bob Granetz X-Ray Tomography granetz,mlreinke