Miniproposals

Miniproposal: 390 Date Filed: 2/25/2004 Title: Evaluation of D(3He) minority heating First Author: Steve Wukitch Session Leader: Steve Wukitch (shots 1-31)

Engineering Operator Run Comment

MP#390 Evaluation of D(He3) minority heating; Sl:Wukitch; PO:Rowan; EO:D

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:05:693PM

Author: Steve Wukitch

Session leader: S. Wukitch Physics operator: W. Rowan MP#390 Evaluation of D(He3) minority heating If available, ECDC Overnight in D2, stopping by 07:00 Run begins at 09:00 and ends at 17:00. Power systems the same as 1040504021 A-coils as on 1040504021 Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) leave B-side upper with 15 psi He3 Hybrid enabled (PG2) fill C-side with 30 psi D2 Hybrid enabled (PG3) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB RF: Transmitters #1,2,3 and 4 in RUN-ON by 08:30 ----------------------------------------------------------------------------------- Plan - Try to get J3 working, and then get J3 and J4 working together. Depending on success, try for H-modes at 3.4 T and ITBs at 2.8 T ----------------------------------------------------------------------------------- 001 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [.9,1.25] sec J4: 1.0 MW [1.2,1.45] sec result: early disruption next: retry 002 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [.9,1.25] sec J4: 1.0 MW [1.2,1.45] sec result: plasma - ohmic H-mode J3: max faults J4: no attempt 003 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - ohmic H-mode late J3: max faults J4: ran 2 faults next: increase power ramp rate on #3 004 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults J4: ran next: retune stub slightly 005 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults J4: ran evidence of central mode conversion on both FRCECE and PCI 006 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults J4: ran evidence of central mode conversion on both FRCECE and PCI 007 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 0.9 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults but 12 msec pulse (longest yet) J4: ran 008 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.9,1.2] sec result: plasma - early disruption J3: - J4: ran 009 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults but 40 msec pulse J4: ran 010 Ip~1 MA, BT~5.2 T, nl04~0.8, 3He~0.06 sec J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults (20 msec pulse) J4: ran 011 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.06 sec J3: 1.1 MW [1.1,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran 012 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.06 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran 013 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran note: J3 may be oscillating 014 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran install 100 MHz low pass filter on J3DC0 015 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran modify J3 output load position 016 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults (35 msec pulse) J4: ran changed J3 transmitter tune again to eliminate oscillation 017 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma - early disruption J3: - J4: ran 3 faults very nice central mode conversion 018 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran - max faults J4: ran J3 looks worse - change tune again 019 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.4 MW [.7,1.2] sec result: plasma J3: - J4: ran - xbar fired 020 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.4 MW [.7,1.2] sec result: plasma -early disruption J3: - J4: ran 2 faults 021 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran few faults (~0.3 sec pulse) J4: ran max faults J3 seems to be improved following tuning adjustment 022 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran 5 faults in addition to programmed modulation J4: ran moved FMIT#3 FPA output load to similar position as FMIT#4 023 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran max faults J4: ran change ferrite position on FMIT#3 024 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 worse J3: ran max faults J4: ran change ferrite position (opposite to 023) on FMIT#3 025 Ip~1 MA, BT~5.1 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 better phase feedback was okay - ran together for 0.03 sec J3: ran max faults J4: ran change ferrite position (another 0.5" in same direction) on FMIT#3 026 Ip~1 MA, BT~5.6 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 better J3: ran max faults when overlapped J4: ran J3 is now limited to ~0.9 MW now need to make them run together 027 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped slowed power ramp rate on J3 028 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped 029 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped slow power ramp rate on J4 030 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.2 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped 031 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.2 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped Run Summary: We made progress towards 50 MHz operation of J antenna. We have established that both transmitters can couple to their respective elements and have limited data suggesting they will operate simultaneously. I think we have clearly identified that the previous DC break was the source of the RF noise and the transmitter tune is the likely culprit for the inability to couple to the plasma. The difficulty in running both transmitters simultaneously is also likely a result of the transmitter tune. It appears the transmitters oscillate at frequencies in addition to 50 MHz when operated into plasma. This may be a result of using a stub to match the dummy load to 50 Ohms that results in a delicate transmitter configuration. Since J4 was operating reliably, we scanned both the B-field and 3He concentration to investigate mode conversion physics. In a series of discharges, we scanned the mode conversion such that the PCI signal shows both the IBW and ICW in one discharge and IBW and ICW isolated in two other discharges. This marks the first conclusive evidence of IBW measured by the PCI and the mapping of the mode conversion region.

Physics Operator Summaries

Entered: Jul 7 2004 04:36:50:207PM

Author: Bill Rowan

Physics Operator Summary for Wednesday, May 5, 2004. Run 1040505. Purpose: MP#390 Evaluation of D(He3) minority heating Session leader: S. Wukitch Physics operator: W. Rowan Summary------------------------------------------------------------------------ Began the run from shot 1040504021. Loaded the entire shot -- including the startup. There were no changes to the startup during the day, and it was stable. There were some early disruptions due to injections. Injections caused disruptions on several shots at approximately 1s. The RF was on at that time. A few hots spots were also observed in the divertor on the video view of j-port at that time. RXL was changed slightly to see what affect it had on the hot spots. There was no noticable effect on the hot spots but the rate of disruptions decreased. The RF was working better by that time as well so there is no conclusion to this -- just a thought. He3 was puffed from PG2. The typical pulse length was approximately 50 ms, but that was lengthed and shorted during the run. One software glitch led to a no-power shot. That shot was overwritten by the following shot so there is no number for it -- it is the first attempt at 011. BT was varied over the range 5.1 T to 5.7 T. Density feedback concerned Jim throughout the day, but there was only one problem due to the feedback and that shot (029) did not end early. Score Card--------------------------------------------------------------------- Plasma 26 (002,003,004,005,006,007,009,010,011,013,014,015, 016,018,019,021,022,023,024,025,026,027,028,029, 030,031) Disruption due to injection 05 (001,008,012,017,020) No power shots (01) Fizzles 00 Duds 00 Total 31, note: no number for the only no power shot Experimental Setup------------------------------------------------------------- If available, ECDC Overnight in D2, stopping by 07:00 Run begins at 09:00 and ends at 17:00. Power systems the same as 1040504021 A-coils as on 1040504021 Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) leave B-side upper with 15 psi He3 Hybrid enabled (PG2) fill C-side with 30 psi D2 Hybrid enabled (PG3) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB RF: Transmitters #1,2,3 and 4 in RUN-ON by 08:30 Run Plan -------------------------------------------------------------------- Try to get J3 working, and then get J3 and J4 working together. Detailed Log----------------------------------------------------------------- Loaded from shot 1040504021. Load/Clean: Load at 5-May-2004 08:13:41.00 001. Plasma. Disruption at 0.6 s SXR shows sharp signal increase at 0.55. That continues until the disruption. SXR also shows a sharp increase at 0.42 s which recovers to the usual low signal. There were two injections after 0.35 s. The second caused the disruption. Next shot. No PCS changes 002. Plasma. Continued all the way through ramp down. Next shot. No PCS changes. 003. Plasma. Next shot. No PCS changes 004. Plasma. Next shot. No PCS changes. 005. Plasma Next shot. No PCS changes. 006. Plasma Next shot. No PCS changes. 007. Plasma. Next shot. No PCS changes 008. Plasma. Disruption at 1.1 s Disruption occurred during RF Sharp increase in SXR before the disruption. This disruption was due to an injection. Next shot. Increase the length of the argon pulse (PG1) from 35 ms to 45 ms. Still starts at 0.3s. 009. Plasma. Next shot. Increase the length of the argon pulse (PG1) from 45 ms to 50 ms. 010. Plasma. Next shot. Increase the BT to 5.4 T. ITF increased to -147050 A 011. Plasma. First attempt at 011 was a no power shot due to a software problem. The second attempt was this shot. BT = 5.4 T Next shot. No PCS changes. 012. Plasma. Disruption at 1.0 s Disruption occurred during the RF pulse Increase in SXR before the disruption. Looks like an injection. Next shot. No PCS changes. 013. Plasma. Full length IP flat top. Disruption during rampdown, 1.7 s. Next shot. Increased the He3 pulse length (PG2) from 60 ms to 100 ms. Still starts at 0.3 s 014. Plasma. Full length -- all the way through ramp down. Next shot. No PCS changes 015. Plasma Full length. Next shot. No PCS changes. 016. Plasma Next shot.N Increased the He3 pulse length (PG2) from 100 ms to 150 ms. Still starts at 0.3 017. Plasma. Disruption at 1.1s Similar to previous disruptions. 012 and 008. Next shot. No PCS changes. 018. Plasma Next shot. No PCS changes. 019. Plasma Next shot. No PCS shots. 020. Plasma. Disruption at 1.0s Next shot. No PCS changes. 021. Plasma. Next shot. Change RXL slightly. Ramp from 0.008 at 0.912s to 0.006 at 1.49. Changed from 0.008 plateau in demand 022. Plasma Next shot. No PCS changes. 023. Plasma Next shot. Change the TF to 5.1 T ITF changed to -138900 024. Plasma TF = 5.1 T Next shot. No PCS changes. 025. Plasma. Marfe ending around 0.7s. Next shot. TF change. New TF=5.6T. ITF = -152500 026. Plasma. TF=5.6T Next shot. Increase TF to 5.7T. Increase ITF to 155215 027. Plasma TF=5.7T Next shot. No PCS changes/ 028. Plasma Next shot. No PCS changes. 029. Plasma Density feedback was a problem for the first time today. Next shot. No PCS changes 030. Plasma Next shot. Reduce He3 pulse (PG2) from 150 ms to 30 ms. 031. Plasma. Last shot.

Session Leader Comments
May 5 2004 09:05:55:740AM	1040505001	Steve Wukitch	001 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [.9,1.25] sec J4: 1.0 MW [1.2,1.45] sec result: early disruption next: retry
May 5 2004 09:28:56:990AM	1040505002	Steve Wukitch	002 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [.9,1.25] sec J4: 1.0 MW [1.2,1.45] sec result: plasma - ohmic H-mode J3: max faults J4: no attempt
May 5 2004 09:33:28:283AM	1040505003	Steve Wukitch	003 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - ohmic H-mode late J3: max faults J4: ran 2 faults next: increase power ramp rate on #3
May 5 2004 09:57:00:263AM	1040505004	Steve Wukitch	004 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults J4: ran next: retune stub slightly
May 5 2004 10:15:29:560AM	1040505005	Steve Wukitch	005 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.5 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults J4: ran
May 5 2004 10:54:49:947AM	1040505007	Steve Wukitch	007 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 0.9 MW [1.15,1.45] sec J4: 1.0 MW [.9,1.2] sec result: plasma - H-modes J3: ran max faults but 12 msec pulse (longest yet) J4: ran
May 5 2004 10:56:34:153AM	1040505008	Steve Wukitch	008 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.9,1.2] sec result: plasma - early disruption J3: - J4: ran
May 5 2004 11:04:59:307AM	1040505009	Steve Wukitch	009 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults but 40 msec pulse J4: ran
May 5 2004 11:29:28:580AM	1040505010	Steve Wukitch	010 Ip~1 MA, BT~5.2 T, nl04~0.8 J3: 1.1 MW [1.15,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults (20 msec pulse) J4: ran
May 5 2004 11:53:59:647AM	1040505011	Steve Wukitch	011 Ip~1 MA, BT~5.4 T, nl04~0.8 J3: 1.1 MW [1.1,1.45] sec J4: 1.1 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran
May 5 2004 12:16:15:183PM	1040505012	Steve Wukitch	012 Ip~1 MA, BT~5.4 T, nl04~0.8 J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma - early disruption J3: ran max faults J4: ran
May 5 2004 12:37:48:037PM	1040505013	Steve Wukitch	013 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran note: J3 may be oscillating
May 5 2004 12:38:15:067PM	1040505014	Steve Wukitch	014 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.1 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran install 100 MHz low pass filter on J3DC0
May 5 2004 01:05:34:370PM	1040505015	Steve Wukitch	015 Ip~1 MA, BT~5.4 T, nl04~0.8 J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults J4: ran modify J3 output load position
May 5 2004 01:07:06:317PM	1040505016	Steve Wukitch	016 Ip~1 MA, BT~5.4 T, nl04~0.8 J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran max faults (35 msec pulse) J4: ran
May 5 2004 01:27:34:220PM	1040505017	Steve Wukitch	changed J3 transmitter tune again to eliminate oscillation 017 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma - early disruption J3: - J4: ran 3 faults
May 5 2004 01:30:44:367PM	1040505017	Steve Wukitch	changed J3 transmitter tune again to eliminate oscillation 017 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma - early disruption J3: - J4: ran 3 faults very nice central mode conversion
May 5 2004 01:59:07:833PM	1040505018	Steve Wukitch	018 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.25 MW [.7,1.2] sec result: plasma J3: ran - max faults J4: ran J3 looks worse - change tune again
May 5 2004 02:06:43:773PM	1040505019	Steve Wukitch	019 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.4 MW [.7,1.2] sec result: plasma J3: - J4: ran - xbar fired J4 bias tripped
May 5 2004 02:11:43:740PM	1040505020	Steve Wukitch	020 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [1.1,1.45] sec J4: 1.4 MW [.7,1.2] sec result: plasma -early disruption J3: - J4: ran 2 faults
May 5 2004 02:49:58:273PM	1040505021	Steve Wukitch	021 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran few faults (~0.3 sec pulse) J4: ran max faults J3 seems to be improved following tuning adjustment 0
May 5 2004 02:51:33:940PM	1040505022	Steve Wukitch	022 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran 5 faults in addition to programmed modulation J4: ran moved FMIT#3 FPA output load to similar position as FMIT#4
May 5 2004 03:05:02:340PM	1040505023	Steve Wukitch	023 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma J3: ran max faults J4: ran change ferrite position on FMIT#3
May 5 2004 03:12:40:137PM	1040505024	Steve Wukitch	024 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 worse J3: ran max faults J4: ran change ferrite position (opposite to 023) on FMIT#3
May 5 2004 03:29:33:103PM	1040505025	Steve Wukitch	025 Ip~1 MA, BT~5.4 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 better phase feedback was okay - ran together for 0.03 sec J3: ran max faults J4: ran change ferrite position (another 0.5" in same direction) on FMIT#3
May 5 2004 04:06:45:517PM	1040505026	Steve Wukitch	026 Ip~1 MA, BT~5.6 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [1.0,1.45] sec result: plasma - ferrite position change seemed to make #3 better J3: ran max faults when overlapped J4: ran J3 is now limited to ~0.9 MW now need to make them run together
May 5 2004 04:29:31:177PM	1040505027	Steve Wukitch	027 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped slowed power ramp rate on J3
May 5 2004 04:46:01:347PM	1040505028	Steve Wukitch	028 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped retune J4
May 5 2004 04:50:42:977PM	1040505029	Steve Wukitch	029 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.4 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped slow power ramp rate on J4
May 5 2004 05:08:58:693PM	1040505030	Steve Wukitch	030 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.2 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped
May 5 2004 05:09:24:723PM	1040505031	Steve Wukitch	031 Ip~1 MA, BT~5.7 T, nl04~0.8, 3He~0.15 sec J3: 1.0 MW [0.6,1.2] sec J4: 1.2 MW [0.8,1.45] sec result: plasma J3: ran max faults when overlapped J4: ran max faults when overlapped

Physics Operator Comments
May 5 2004 08:15:45:640AM		Bill Rowan	Session leader: S. Wukitch Physics operator: W. Rowan MP#390 Evaluation of D(He3) minority heating If available, ECDC Overnight in D2, stopping by 07:00 Run begins at 09:00 and ends at 17:00. Power systems the same as 1040504021 A-coils as on 1040504021 Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) leave B-side upper with 15 psi He3 Hybrid enabled (PG2) fill C-side with 30 psi D2 Hybrid enabled (PG3) Enable the following gate valves, assuming no vacuum problems: ECE, VUV, DNB RF: Transmitters #1,2,3 and 4 in RUN-ON by 08:30 ----------------------------------------------------------------------------------- Plan - Try to get J3 working, and then get J3 and J4 working together. Loaded from shot 1040504021. Load/Clean: Load at 5-May-2004 08:13:41.00
May 5 2004 09:06:49:817AM	1040505001	Bill Rowan	001. Plasma. Disruption at 0.6 s SXR shows sharp signal increase at 0.55. That continues until the disruption. SXR also shows a sharp increase at 0.42 s which recovers to the usual low signal. There were two injections after 0.35 s. The second caused the disruption. Next shot. No PCS changes
May 5 2004 09:13:27:843AM	1040505002	Bill Rowan	002. Plasma. Continued all the way through ramp down.
May 5 2004 09:29:50:770AM	1040505002	Bill Rowan	Next shot. No PCS changes.
May 5 2004 09:30:36:860AM	1040505003	Bill Rowan	003. Plasma.
May 5 2004 09:34:01:580AM	1040505003	Bill Rowan	Next shot. No PCS changes
May 5 2004 09:50:29:190AM	1040505004	Bill Rowan	004. Plasma. Next shot. No PCS changes.
May 5 2004 10:01:41:820AM	1040505005	Bill Rowan	005. Plasma Next shot. No PCS changes.
May 5 2004 10:15:30:920AM	1040505006	Bill Rowan	006. Plasma Next shot. No PCS changes.
May 5 2004 10:37:54:653AM	1040505007	Bill Rowan	007. Plasma. Next shot. No PCS changes
May 5 2004 10:44:50:980AM	1040505008	Bill Rowan	008. Plasma. Disruption at 1.1 s Disruption occurred during RF Sharp increase in SXR before the disruption. This disruption was due to an injection. Next shot. Increase the length of the argon pulse (PG1) from 35 ms to 45 ms. Still starts at 0.3s.
May 5 2004 10:59:57:283AM	1040505009	Bill Rowan	009. Plasma. Next shot. Increase the length of the argon pulse (PG1) from 45 ms to 50 ms.
May 5 2004 11:23:46:337AM	1040505010	Bill Rowan	010. Plasma. Next shot. Increase the BT to 5.4 T. ITF increased to -147050 A
May 5 2004 11:42:21:537AM	1040505011	Bill Rowan	Next shot. No PCS changes.
May 5 2004 11:54:17:930AM	1040505011	Bill Rowan	011. Plasma. First attempt at 011 was a no power shot due to a software problem. The second attempt was this shot. Bt = 5.4 T
May 5 2004 12:05:24:587PM	1040505012	Bill Rowan	012. Plasma. Disruption at 1.0 s Disruption occurred during the RF pulse Increase in SXR before the disruption. Looks like an injection. Next shot. No PCS changes.
May 5 2004 12:21:29:430PM	1040505013	Bill Rowan	013. Plasma. Full length IP flat top. Disruption during rampdown, 1.7 s.
May 5 2004 12:24:08:560PM	1040505013	Bill Rowan	Next shot. Increased the He3 pulse length (PG2) from 60 ms to 100 ms. Still starts at 0.3 s
May 5 2004 12:34:06:067PM	1040505014	Bill Rowan	014. Plasma. Full length -- all the way through ramp down.
May 5 2004 12:40:23:573PM	1040505014	Bill Rowan	Next shot. No PCS changes
May 5 2004 12:50:23:083PM	1040505015	Bill Rowan	015. Plasma Full length.
May 5 2004 12:58:13:163PM	1040505015	Bill Rowan	Next shot. No PCS changes.
May 5 2004 01:05:49:727PM	1040505016	Bill Rowan	016. Plasma
May 5 2004 01:13:49:977PM	1040505016	Bill Rowan	Next shot. Increased the He3 pulse length (PG2) from 100 ms to 150 ms. Still starts at 0.3 s
May 5 2004 01:25:10:760PM	1040505017	Bill Rowan	017. Plasma. Disruption at 1.1s Similar to previous disruptions. 012 and 008.
May 5 2004 01:31:09:380PM	1040505017	Bill Rowan	Next shot. No PCS changes.
May 5 2004 01:50:22:307PM	1040505018	Bill Rowan	018. Plasma Next shot. No PCS changes.
May 5 2004 02:05:29:687PM	1040505019	Bill Rowan	019. Plasma Next shot. No PCS shots.
May 5 2004 02:19:33:177PM	1040505020	Bill Rowan	020. Plasma. Disruption at 1.0s Next shot. No PCS changes.
May 5 2004 02:25:25:663PM	1040505021	Bill Rowan	021. Plasma.
May 5 2004 02:32:03:167PM	1040505021	Bill Rowan	Next shot. Change RXL slightly. Ramp from 0.008 at 0.912s to 0.006 at 1.49. Changed from 0.008 plateau in demand
May 5 2004 02:47:25:340PM	1040505022	Bill Rowan	022. Plasma Next shot. No PCS changes.
May 5 2004 03:00:41:830PM	1040505023	Bill Rowan	023. Plasma Next shot. Change the TF to 5.1 T ITF changed to -138900
May 5 2004 03:16:26:720PM	1040505024	Bill Rowan	024. Plasma TF = 5.1 T Next shot. No PCS changes.
May 5 2004 03:29:47:103PM	1040505025	Bill Rowan	025. Plasma. Marfe ending around 0.7s. Next shot. TF change. New TF=5.6T. ITF = -152500
May 5 2004 03:53:48:620PM	1040505026	Bill Rowan	026. Plasma. TF=5.6T
May 5 2004 04:02:29:307PM	1040505026	Bill Rowan	Next shot. Increase TF to 5.7T. Increase ITF to 155215
May 5 2004 04:20:36:910PM	1040505027	Bill Rowan	027. Plasma TF=5.7T Next shot. No PCS changes
May 5 2004 04:23:45:157PM	1040505028	Bill Rowan	028. Plasma
May 5 2004 04:31:39:267PM	1040505028	Bill Rowan	Next shot. No PCS changes.
May 5 2004 04:42:11:730PM	1040505029	Bill Rowan	029. Plasma Density feedback was a problem for the first time today.
May 5 2004 04:45:58:283PM	1040505029	Bill Rowan	Next shot. No PCS changes
May 5 2004 04:51:31:320PM	1040505030	Bill Rowan	030. Plasma
May 5 2004 04:59:40:540PM	1040505030	Bill Rowan	Next shot. Reduce He3 pulse (PG2) from 150 ms to 30 ms
May 5 2004 05:04:27:390PM	1040505031	Bill Rowan	031. Plasma. Last shot.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:57:35:870AM	Plasma	Ok
2	09:10:22:003AM	Plasma	Ok
3	09:27:02:100AM	Plasma	Ok
4	09:43:35:290AM	Plasma	Ok
5	09:56:35:170AM	Plasma	Ok
6	10:10:16:410AM	Plasma	Ok
7	10:22:49:510AM	Plasma	Ok
8	10:35:39:970AM	Plasma	Ok
9	10:54:40:993AM	Plasma	Ok
10	11:08:49:797AM	Plasma	Ok
11	11:24:07:587AM	Plasma	Ok
12	12:00:15:500PM	Plasma	Ok
13	12:15:21:700PM	Plasma	Ok
14	12:27:48:827PM	Plasma	Ok
15	12:44:06:123PM	Plasma	Ok
16	01:01:21:523PM	Plasma	Ok
17	01:20:21:123PM	Plasma	Ok
18	01:33:27:760PM	Plasma	Ok
19	01:53:43:870PM	Plasma	Ok
20	02:08:12:927PM	Plasma	Ok
21	02:20:59:860PM	Plasma	Ok
22	02:33:38:430PM	Plasma	Ok
23	02:49:48:710PM	Plasma	Ok
24	03:03:58:573PM	Plasma	Ok
25	03:17:57:987PM	Plasma	Ok
26	03:50:18:220PM	Plasma	Ok
27	04:06:39:580PM	Plasma	Ok
28	04:21:30:923PM	Plasma	Ok
29	04:34:23:213PM	Plasma	Ok
30	04:49:08:497PM	Plasma	Ok
31	05:02:16:457PM	Plasma	Ok