Miniproposals

Miniproposal: 192 Date Filed: 9/30/1997 Title: Dynamic q Scans in Enhanced D$_{\\\\\\\\alpha}$ H-modes First Author: Joseph Snipes Session Leader: Joseph Snipes (shots 1-38)

Engineering Operator Run Comment

MP#192/Goetz, Snipes

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:17:897PM

Author: To Be Determined

MP 192 Dynamic q scans in Enhanced D alpha H-mode Session Leader: Joseph Snipes Physics Operator: Steve Wolfe Engineer in Charge: Frank Silva The purpose of today's run is to determine the effect of a changing safety factor on the MHD stability and confinement during EDA H-mode. Bt and Ip ramps will be performed to change q dynamically during the relatively steady-state EDA H-mode. The run went reasonably well though there were a number of fizzles that slowed us down and a number of moly injections that hurt the H-modes. Otherwise, the machine ran quite well and we managed to get through the program of ramping TF and Ip. It became clear that the RF did not heat very well when the resonance was off axis at low or high field, though the high field (6.2 T) may be somewhat better than the low field (4.5 T). Confinement clearly increased with increasing plasma current and the best H-modes had H factors up to nearly 1.8. Stored energies up to 200 kJ were obtained with less than 3 MW of RF (e.g, shot 9) by ramping up the plasma current up to 1.2 MA. The MHD activity still needs to be analyzed in detail to determine if there were any interesting modes. EDA H-mode appears to be have an Ip dependence in that it is more difficult to obtain EDA at higher current. It is also more difficult to obtain EDA at low field, though that may be simply because the RF resonance is too far off axis. There appeared to be a hysteresis effect in that the EDA was hard to obtain by starting at 1.2 MA, but if you start at 0.8 MA and get into EDA there, the EDA can be maintained up to at least 1.2 MA. Indeed, the last shot remains in EDA H-mode up to nearly 1.4 MA, though multiple RF trips and a moly injection were probably responsible for losing the EDA H-mode on that shot. Granetz also noted that the soft x ray pedestal width decreased faster than linearly with increasing Ip in steady state EDA H-mode. Boivin noted some interesting D high energy tails at low field where an edge resonance comes into the plasma. Shot 1: 1 MA, 5.4 T with 2 MW of RF. Nice EDA H-mode from 0.45 - 1.6 sec. Shot 2: 1 MA, 5.4 T with 2 MW of RF. Nice EDA H-mode from 0.48 - 1.4 sec. Shot 3: 1 MA, 5.4 T with 2.5 MW of RF. RF tripped at a moly injection at 0.6 sec. EDA early, then a shortreturn to L-mode then back to EDA with only 1.3 MW of RF until 1.4 sec. Shot 4: No gas. No plasma. Shot 5: Got gas this time. Fizzle! Shot 6: RF up to 2.5 MW. Nice EDA from 0.5 to 1.44 sec. H factor up to almost 1.8 at 1.15 sec. Shot 7: Ramping Ip from 0.8 to 1.2 MA starting at 0.6 sec until 1.2 sec. Good shot. RF trips at 1.15 sec due to outer gap becoming too small. Otherwise a nice EDA from 0.46 to 1 sec. Appears to be a Moly injection at about 1 sec causing the EDA to either detach or go ELM-free. Shot 8: Wolfe decided to reduce the RCUR offset to correct for the Ip dependence of RCUR. EDA then ELM-free, then back to EDA. Outer gap still is too small around 4 mm. Try increasing it by a couple of mm or so for shot 9. Shot 9: Good shot with Ip ramp up to 1.2 MA, 2.5 MW of RF, 200 kJ of stored energy. Some hints of Fast Edge Modes at 50 kHz bursting on and off, but rather weak. Shot 10: Good upward Ip ramp shot with 2.9 MW of RF. Still have problems with the outer gap late in the shot causing increased Prad after 1.14 sec. Granetz reports that shot 10 had a constant outer gap and still the soft x ray width decreased faster than linearly with increasing Ip. Shot 11: Good upward Ip ramp shot with 3.0 MW of RF. Nice EDA H-mode. Shot 12: Downward Ip ramp from 0.8 to 1.2 sec and 1.2 MA to 0.8 MA. RF had multiple trips. Needs to be retuned to the new conditions. Try decreasing the outer gap. Presently it is about 1.2 to 1.4 cm. MHD during EDA from 0.88 to 0.92 with frequencies from 100 to 150 kHz. Also a larger mode from 0.91 sec to 0.92 sec at about 50 kHz. Shot 13: RF still tripping. H-modes not stable. Shot 14: D alpha oscillations during H-mode. Seems to be EDA but not like at lower Ip. Then, RF trips around 0.9 sec. Shot 15: Similar to shot 14 but the RF stayed on at 2.5 MW except for one short glitch around 0.9 sec. Still had D alpha oscillations during first H-mode. Prad increases rapidly during the first H-mode indicating that it is not a good EDA. Shot 16: Fizzle! Shot 17: Fizzle! Shot 18: Fizzle! Shot 19: Density increased to nl04 = 1.2 x 10^20 m^-2. RF tripped. Only about 1.5 MW for most of the shot. ELM-free H-modes early. Then, EDA as the current drops. It seems that the EDA H-mode is more difficult to achieve at higher current. Shot 20: Decent shot. ELM-free H-mode early, then EDA as the current ramps down. RF stayed on at about 2.5 MW except for a few short glitches. Shot 21: Raise nl04 to 1.4 x 10^20 to attempt to improve RF coupling and to see if it makes it easier to get EDA H-mode at high current. Fizzle! Shot 22: Getting moly injections early in the RF pulse. H-modes not stable. Shot 23: Apparently, the strike point is touching the floor and may be causing the moly injections early in the RF pulse. H-modes not stable. Shot 24: Attempts to raise ZXL have reduced the moly injections, but still H-modes are not stable. Shot 25: Sergei changed the voltage setting on RF transmitter 1 to prevent tripping. The RF turn on was also delayed to 0.6 sec. Good shot. H-mode delayed until about 0.8 sec, then remains in EDA with 2.4 MW of RF. Shot 26: Ar puff turned on again. H-mode is not as stable. There are two H-mode phases, interrupted by a couple of glitches in the RF power. The first phase at higher current appears to be EDA but not very enhanced D alpha. The second phase has clear EDA with much lower confinement. Shot 27: Bt ramp from 6.2 T to 4.5 T from 0.6 to 1.2 sec. Good shot. Steady EDA. Shot 28: Bt ramp from 6.2 T to 4.5 T from 0.6 to 1.2 sec. Ar puff on again. Good shot. Not as steady an H-mode. RF power up to 2.6 MW. TRAQ 1 magnetics data failed causing EFIT to fail as well. Shot 29: Ar turned off. Hard x rays early. Nonetheless a decent shot until there was a moly injection at 0.84 sec. Shot 30: Another downward TF ramp. Starts out in EDA, but the Prad increases rapidly and changes the H-mode character in that the D alpha emission drops around 0.8 sec. RF at about 3 MW until 1.1 sec Shot 31: Change to an upward TF ramp from 4.5 T to 6.2 T starting at 0.6 sec to 1.2 sec. RF up to nearly 3 MW until 1.1 sec with a few glitches. In and out of ELM-free H-mode early, then EDA late in the TF ramp. Shot 32: Repeat upward TF ramp. Several H-modes becoming more EDA-like as the TF ramps up. Shot 33: Moly injection at 0.66 sec knocked the plasma out of H-mode and tripped D port RF antenna. After that, only a bit more than 1 MW of RF until 1.4 sec. Still returns to EDA at 1.1 sec until 1.4 sec. Shot 34: TF ramp from 5.4 T to 4.5 T and Ip ramp from 0.8 to 1.2 MA from 0.6 to 1.2 sec. Many short H-modes. Disrupted at 1.35 sec. Shot 35: Increase nl04 to 1.2 x 10^20 m^-2. Hold TF up at 4.5 T until 1.4 sec to raise q in the rampdown to hopefully avoid the disruption. Still disrupted at 1.37 sec. Many short ELM-free H-modes. We seem to have lost the EDA. Shot 36: Flat Ip at 1.0 MA, Bt at 5.4 T to regain the EDA. Still did not get very stable EDA, but after a short radiative H-mode, it went into EDA from 0.76 to 1.4 sec. Shot 37: Ramp Ip from 1 to 1.5 MA at constant Bt of 5.7 T. Fizzle! Shot 38: Repeat. RF tripped early. Disrupted at 1.25 MA at 1.3 sec. Only about 1.5 MW with lots of trips. Still had an EDA from 0.8 to nearly 1.2 sec.

Physics Operator Summaries

Entered: Jul 7 2004 04:36:58:880PM

Author: To Be Determined

Physop Summary for 980122 MP #192 Dynamic q-scans SL: Snipes PO: wolfe EO: Silva, Bertolino Engineering setup: ------------------ ECDC in D2 for a few hours in the morning begin as on 980120027, except TF limit set to 185kA TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enabled fill B-top with 6 PSI of D2, hybrid enabled fill B-side-lower with 1 PSI of Ar, hybrid not enabled ECE gate valve enabled; others if diagnosticians are ready. RF will be required on all shots. At least 2.5MW net power is requested, from t=0.4sec to t=1.2sec. Targets (we hope) will be EDA H-modes, with varying current and toroidal field. Run Plan: -------- The purpose of this experiment is to determine the effect of a change in safety factor on confinement in Enhanced Da (EDA) H-modes, to better understand their stability, and to better diagnose the conditions under which they occur. The idea of the experiment is to dynamically ramp the plasma safety factor during the EDA H-mode to attempt to determine the causes of its stability as well as the limits of its operation. By ramping the plasma current or toroidal field, the q profile can be changed to determine how the location of particular rational q values (e.g., q=4) affects the EDA stability. 0.) EDA H-modes should be obtained under standard conditions (BT=5.3T, Ip=1MA, nl04 = 1.0e20m-2, PRF= 2.5 MW) ( ~ 5 shots). 1.) Once EDA H-modes are obtained, ramp the plasma current up from 0.8 to 1.2 MA over 0.6 sec during the EDA H-mode. The RF should turn on 0.2 sec prior to the start of the ramp to allow the plasma to get into a fully developed EDA H-mode before the ramp starts. So, the RF should run at ~ 2.5 MW from t=0.4 sec to t=1.2 sec and Ip should ramp from 0.6 sec until 1.2 sec. 2.) Then, run the opposite discharge ramping Ip down from 1.2 to 0.8 MA during the EDA H-mode. The qpsi(a) should vary from about 2.8 to 4.3 (4 shots). 3.) Then, returning to 1 MA, the TF will be ramped starting at 0.6 sec from 6.2 T to about 4.5 T during the EDA H-mode. The plasma current should be flat at 1 MA from about 0.45 sec to 1.2 sec. 4.) Next, breakdown as usual around 5.3 T, then ramp the TF down from t=0 to 4.5 T around 0.4 sec and maintain until 0.6 sec, then ramp the TF up to 6.2 T at 1.2 sec during the EDA H-mode (4 shots). Here, qpsi(a) should vary from about 2.9 to 4. 5.) If the results indicate that more variation in q is desirable, it should be possible to ramp both Ip and BT simultaneously in opposite directions starting from the downward BT ramp from 6.2 T to 4.5 T and including an upward Ip ramp over the same 0.6 sec interval from 0.8 - 1.2 MA. This would give a change in qpsi(a) from about 5 to 2.4. If time permits, this could be done in two steps, one at high q and the other at low q. The first could start at 6.2 T and 0.8 MA, then ramp Ip down to 0.7 or even 0.6 MA during the EDA H-mode. Low q could then be attempted by running at 1.2 MA and 5.3 T, then ramping down the TF to 4.5 T just before the end of the Ip flattop during EDA H-mode. Results: ------- Nearly all of the above was accomplished. Specifically, we completed items #0-4, and did a variant of case 5 in which we ramped the tf down from 5.4 to 4.5T, while ramping the TF up from .8MA to 1.2MA. We also ran one shot (#38) in which we ramped the current to >1.4MA at constant B=5.7T. Both of these last cases got to qpsi < 2.8. The RF had more difficulty with the field ramps than the Ip ramps, and the EDA was best maintained in constant field, both with ramping and constant Ip. The second fact is a contributing factor to the first, since the RF was most reliable in good EDA. The best performance cases were the upward current ramps, with EDA being entered at low current and then maintained as the current was ramped up. It appeared the H-factor increased with current in these cases; certainly the confinement and stored energy did. It seemed easier to get and hold a good EDA this way than the opposite, starting at high current and ramping down. It was harder to get a good EDA going when starting at the higher current. Several of the 1.2MA end-point cases got Wmhd>200kJ. Neutron rates were high, but not quite in record territory. According to Catherine and Rejean, today was the #2 all-time C-Mod total neutron count. Bob and Thomas got very interesting pedestal results, indicating that the xray pedestal width is inversely proportional to something like the square of the current, and independent of toroidal field. All shots ramped down well until we went below q=3. We actually extended the invert time on the PF supplies to see if the terminations at 1.7 sec were due to supplies inverting. They weren't; maybe being taken out by the fizzle detector. Argon was turned on for a few shots, at 20msec @1psi. JR could see it when it was there; it's not clear whether the EDA's were adversely affected or not. The MHD activity needs to be analysed in detail to see if there were interesting modes. Nothing obvious jumped out at us during the run. Details: -------- For shot-by-shot details, see the logbook. Future Physops wanting to copy segments, note that segments other than #2 were used for many of today's cases, as shown below (and in the logbook). Shots 1,2,3,and 6 correspond to case (0), Ip=1MA, TF=5.4T. Prf increasing as they tuned up. Best was #6, with Prf=2.5MW, Wmhd=180kJ, H=1.8. These used segment #2. Shots 7-11 were case (1), Ip ramps from .8MA to 1.2MA. **** NOTE: These shots used segment #3 for t> 0.1sec **** Several wirehead tweaks were required, especially introducing an RCUR programming ramp to keep the outer gap constant. The RCUR predictor seems to have a current dependence. I tried adjusting the offset, but in the interest of time, ended up drawing an RCUR ramp to make it do what I want instead of what I told it. A 4mm (inward) ramp in RCUR gave us a near constant gap for increasing current. Also, had to hold CLEARIN constant after 1.2sec, to keep gap from decreasing in rampdown. Also, note that there was a change in Ip controller at 1.050 sec, which needed to be moved out to 1.4. Shots 12-15,19,20,22-26 were case (2), downward Ip ramps from 1.2MA to .8MA. **** NOTE: These shots used Segment #4 for t> 0.1sec **** We had a lot of difficulties getting steady results here. Among other things, a persistent injection between .5 and .6 seconds was ameliorated by delaying the drop of ZXL. A voltage adjustment of xmitter #1 was made to get rid of screen overcurrent trips. Shots 27-30 were case (3), Ip=1MA, TF ramped up to 6.2 and down to 4.5T. **** These shots used segment #2 for t> 0.1 sec*** Best case may have been #28. Note that on #28, the TRAQ1 data was corrupted, resulting in badly converged EFIT solutions because of the use of the spurious data on BP_11. EFIT was re-run later in the day without the bad coil. Automatic analysis routines that run after EFIT should be recalculated to use the corrected EFIT results. Shots 31-33 were case (4), Ip=1MA, TF ramped down to 4.5, then up to 6.2T **** These shots used segment #2 for t > 0.1 sec **** These were not very good data, as it was not possible to get steady H-modes even when the RF stayed on. H-factors were low. These disrupted early in ramp-down, near when qpsi(95) passed back through 3.0 from below. Shots 34-35 were a modification of case (5), with Ip ramping from .8 to 1.2MA, while ramping tf down from 5.4 to 4.5T. **** These shots used segment #3 for t > 0.1 sec ***** Both of these shots had multiple H-modes, with very poor if any EDA character. Shot 36 was a return to condition (0), 1MA, 5.4T, no ramping (Segment #2 again). This was to see if the wall condition had degraded to the point where we would no longer get a good EDA. A fair EDA resulted, with an injection. Stored energy was only 150kJ at 2.3MW Shot 38 (segment #3) was an Ip ramp to 1.4MA (programmed 1.5, but didn't quite get there.) TF was at 5.7T . Shot disrupted early in rampdown, but no halo warning. Unfortunately, one transmitter faulted off almost immediately, so we only got about 1.3-1.4 MW and that had glitches. Nevertheless, we got to 160kJ in a reasonable EDA. It shoulda been a contenda. Problems: --------- Before the run, Frank reported that ECDC at 1.e-4 Torr had caused overtemps on F-port, so he had to run it at 5e-5 Torr. No power supply or computer problems today. We had one GAS SYSTEM dud (shot#4) when we got no gas puff, and no HV at the boards, although hybrid signals were fine. A gas fill fault appeared on the PLC long after the shot. We ran into a PCS gotcha when trying to set up the 1.5MA shot. It seems the All-P's screen obeys limits on what it lets you draw and display, and the limit on Ip was 1.2MA. The Edit_wire Ip screen doesn't respect these limits, so I used it to draw the 1.5MA. Josh has now been informed of this problem. The RCUR predictor presently in use has enough current sensitivity to cause problems with the outer gap. The workaround was to draw a ramp when constant gap was desired. The Ip controller was being switched for rampdown at 1.05 sec. I moved this to 1.4 sec to get it out of the way. The same controller switch may be present in other 1.2sec shots; it's not clear it does anything terrible, since shots were ramping down ok even before I changed it. RF performed well in a challenging run. After shot #24, Sergei reduced a voltage setting in Transmitter #1 to try to prevent screen overcurrent trips. It may have helped. The F-side leak with the argon purge opened up many times during the day, then went away. This may have been more related to HEAT than CRYO. Note that after the run yesterday (and today?) we observed several cycles of this Ar leak coming and going. The six fizzles were probably due to small drifts in fields, mainly Bz; adjusting IC_EF4 seemed to cure them. There was also one runaway startup (#29), which prompted an IC_EF4 tweak. Scorecard: ---------- Duds 1 (gas system) Fizzles 6 Plasmas 31 ======= == total 38

Session Leader Comments
Jan 22 1998 08:43:46:990AM	980122001	Joseph Snipes	MP 192 Dynamic q scans in Enhanced D alpha H-mode Session Leader: Joseph Snipes Physics Operator: Steve Wolfe Engineer in Charge: Frank Silva The purpose of today's run is to determine the effect of a changing safety factor on the MHD stability and confinement during EDA H-mode. Bt and Ip ramps will be performed to change q dynamically during the relatively steady-state EDA H-mode. Shot 1: 1 MA, 5.4 T with 2 MW of RF. Nice EDA H-mode from 0.45 - 1.6 sec.
Jan 22 1998 09:00:24:580AM	980122002	Joseph Snipes	Shot 2: 1 MA, 5.4 T with 2 MW of RF. Nice EDA H-mode from 0.48 - 1.4 sec.
Jan 22 1998 09:02:53:680AM	980122003	Joseph Snipes	Shot 3: 1 MA, 5.4 T with 2.5 MW of RF. RF tripped at a moly injection at 0.6 sec. EDA early, then a short return to L-mode then back to EDA with only 1.3 MW of RF until 1.4 sec.
Jan 22 1998 09:12:53:590AM	980122004	Joseph Snipes	Shot 4: No gas. No plasma.
Jan 22 1998 09:19:08:100AM	980122005	Joseph Snipes	Shot 5: Got gas this time. Fizzle!
Jan 22 1998 09:34:18:410AM	980122006	Joseph Snipes	Shot 6: RF up to 2.5 MW. Nice EDA from 0.5 to 1.44 sec. H factor up to almost 1.8 at 1.15 sec.
Jan 22 1998 09:56:14:120AM	980122007	Joseph Snipes	Shot 7: Ramping Ip from 0.8 to 1.2 MA starting at 0.6 sec until 1.2 sec. Good shot. RF trips at 1.15 sec due to outer gap becoming too small. Otherwise a nice EDA from 0.46 to 1 sec. Appears to be a Moly injection at about 1 sec causing the EDA to either detach or go ELM-free.
Jan 22 1998 10:27:30:170AM	980122008	Joseph Snipes	Shot 8: Wolfe decided to reduce the RCUR offset to correct for the Ip dependence of RCUR. EDA then ELM-free, then back to EDA. Outer gap still is too small around 4 mm. Try increasing it by a couple of mm or so for shot 9.
Jan 22 1998 10:27:09:610AM	980122009	Joseph Snipes	Shot 9: Good shot with Ip ramp up to 1.2 MA, 2.5 MW of RF, 200 kJ of stored energy. Some hints of Fast Edge Modes at 50 kHz bursting on and off, but rather weak.
Jan 22 1998 10:41:01:140AM	980122010	Joseph Snipes	Shot 10: Good upward Ip ramp shot with 2.9 MW of RF. Still have problems with the outer gap late in the shot causing increased Prad after 1.14 sec.
Jan 22 1998 11:01:58:810AM	980122010	Joseph Snipes	Shot 10: Granetz reports that shot 10 had a constant outer gap and still the soft x ray width decreased faster than linearly with increasing Ip.
Jan 22 1998 10:49:58:370AM	980122011	Joseph Snipes	Shot 11: Good upward Ip ramp shot with 3.0 MW of RF. Nice EDA H-mode.
Jan 22 1998 11:00:21:040AM	980122012	Joseph Snipes	Shot 12: Downward Ip ramp from 0.8 to 1.2 sec and 1.2 MA to 0.8 MA. RF had multiple trips. Needs to be retuned to the new conditions. Try decreasing the outer gap. Presently it is about 1.2 to 1.4 cm.
Jan 22 1998 11:07:12:530AM	980122012	Joseph Snipes	Shot 12: MHD during EDA from 0.88 to 0.92 with frequencies from 100 to 150 kHz. Also a larger mode from 0.91 sec to 0.92 sec at about 50 kHz.
Jan 22 1998 11:19:00:570AM	980122013	Joseph Snipes	Shot 13: RF still tripping. H-modes not stable.
Jan 22 1998 11:32:23:300AM	980122014	Joseph Snipes	Shot 14: D alpha oscillations during H-mode. Seems to be EDA but not like at lower Ip. Then, RF trips around 0.9 sec.
Jan 22 1998 11:41:17:050AM	980122015	Joseph Snipes	Shot 15: Similar to shot 14 but the RF stayed on at 2.5 MW except for one short glitch around 0.9 sec. Still had D alpha oscillations during first H-mode. Prad increases rapidly during the first H-mode indicating that it is not a good EDA.
Jan 22 1998 11:45:13:150AM	980122016	Joseph Snipes	Shot 16: Fizzle!
Jan 22 1998 11:55:28:400AM	980122017	Joseph Snipes	Shot 17: Fizzle!
Jan 22 1998 12:12:47:240PM	980122018	Joseph Snipes	Shot 18: Fizzle!
Jan 22 1998 12:33:48:580PM	980122019	Joseph Snipes	Shot 19: Density increased to nl04 = 1.2 x 10^20 m^-2. RF tripped. Only about 1.5 MW for most of the shot. ELM-free H-modes early. Then, EDA as the current drops. It seems that the EDA H-mode is more difficult to achieve at higher current.
Jan 22 1998 12:42:52:940PM	980122020	Joseph Snipes	Shot 20: Decent shot. ELM-free H-mode early, then EDA as the current ramps down. RF stayed on at about 2.5 MW except for a few short glitches.
Jan 22 1998 12:56:11:480PM	980122020	Joseph Snipes	Shot 20: Short burst of MHD after a sawtooth with increasing frequency from about 20 to 30 kHz from about 0.825 to 0.835 sec.
Jan 22 1998 12:53:54:720PM	980122021	Joseph Snipes	Shot 21: Raise nl04 to 1.4 x 10^20 to attempt to improve RF coupling and to see if it makes it easier to get EDA H-mode at high current. Fizzle!
Jan 22 1998 01:56:16:570PM	980122022	Joseph Snipes	Shot 22: Getting moly injections early in the RF pulse. H-modes not stable.
Jan 22 1998 01:57:31:520PM	980122023	Joseph Snipes	Shot 23: Apparently, the strike point is touching the floor and may be causing the moly injections early in the RF pulse. H-modes not stable.
Jan 22 1998 01:58:50:390PM	980122024	Joseph Snipes	Shot 24: Attempts to raise ZXL have reduced the moly injections, but still H-modes are not stable.
Jan 22 1998 02:08:46:980PM	980122025	Joseph Snipes	Shot 25: Sergei changed the voltage setting on RF transmitter 1 to prevent tripping. The RF turn on was also delayed to 0.6 sec. Good shot. H-mode delayed until about 0.8 sec, then remains in EDA with 2.4 MW of RF.
Jan 22 1998 02:24:19:400PM	980122026	Joseph Snipes	Shot 26: Ar puff turned on again. H-mode is not as stable. There are two H-mode phases, interrupted by a couple of glitches in the RF power. The first phase at higher current appears to be EDA but not very enhanced D alpha. The second phase has clear EDA with much lower confinement.
Jan 22 1998 02:46:23:320PM	980122027	Joseph Snipes	Shot 27: Bt ramp from 6.2 T to 4.5 T from 0.6 to 1.2 sec. Good shot. Steady EDA.
Jan 22 1998 02:50:34:190PM	980122028	Joseph Snipes	Shot 28: Bt ramp from 6.2 T to 4.5 T from 0.6 to 1.2 sec. Ar puff on again. Good shot. Not as steady an H-mode. RF power up to 2.6 MW.
Jan 22 1998 02:54:25:470PM	980122028	Joseph Snipes	Shot 28: Bt ramp from 6.2 T to 4.5 T from 0.6 to 1.2 sec. Ar puff on again. Good shot. Not as steady an H-mode. RF power up to 2.6 MW. TRAQ 1 magnetics data failed causing EFIT to fail as well.
Jan 22 1998 03:04:41:230PM	980122028	Joseph Snipes	Shot 28: Some evidence of D tails near the edge on the charge exchange and some weak TAE like modes after sawteeth at 600 kHz on the fast magnetics.
Jan 22 1998 02:59:23:450PM	980122029	Joseph Snipes	Shot 29: Ar turned off. Hard x rays early. Nonetheless a decent shot until there was a moly injection at 0.84 sec.
Jan 22 1998 03:17:15:740PM	980122030	Joseph Snipes	Shot 30: Another downward TF ramp. Starts out in EDA, but the Prad increases rapidly and changes the H-mode character in that the D alpha emission drops around 0.8 sec. RF at about 3 MW until 1.1 sec
Jan 22 1998 03:42:44:300PM	980122031	Joseph Snipes	Shot 31: Change to an upward TF ramp from 4.5 T to 6.2 T starting at 0.6 sec to 1.2 sec. RF up to nearly 3 MW until 1.1 sec with a few glitches. In and out of ELM-free H-mode early, then EDA late in the TF ramp.
Jan 22 1998 03:53:13:160PM	980122032	Joseph Snipes	Shot 32: Repeat upward TF ramp. Several H-modes becoming more EDA-like as the TF ramps up.
Jan 22 1998 04:06:13:740PM	980122033	Joseph Snipes	Shot 33: Moly injection at 0.66 sec knocked the plasma out of H-mode and tripped D port RF antenna. After that, only a bit more than 1 MW of RF until 1.4 sec. Still returns to EDA at 1.1 sec until 1.4 sec.
Jan 22 1998 04:19:57:960PM	980122034	Joseph Snipes	Shot 34: TF ramp from 5.4 T to 4.5 T and Ip ramp from 0.8 to 1.2 MA from 0.6 to 1.2 sec. Many short H-modes. Disrupted at 1.35 sec.
Jan 22 1998 04:30:26:630PM	980122035	Joseph Snipes	Shot 35: Increase nl04 to 1.2 x 10^20 m^-2. Hold TF up at 4.5 T until 1.4 sec to raise q in the rampdown to hopefully avoid the disruption. Still disrupted at 1.37 sec. Many short ELM-free H-modes. We seem to have lost the EDA.
Jan 22 1998 04:49:24:670PM	980122036	Joseph Snipes	Shot 36: Flat Ip at 1.0 MA, Bt at 5.4 T to regain the EDA. Still did not get very stable EDA, but after a short radiative H-mode, it went into EDA from 0.76 to 1.4 sec.
Jan 22 1998 04:53:48:070PM	980122037	Joseph Snipes	Shot 37: Ramp Ip from 1 to 1.5 MA at constant Bt of 5.7 T. Fizzle!
Jan 22 1998 05:08:33:610PM	980122038	Joseph Snipes	Shot 38: Repeat. RF tripped early. Disrupted at 1.25 MA at 1.3 sec. Only about 1.5 MW with lots of trips. Still had an EDA from 0.8 to nearly 1.2 sec.
Jan 22 1998 05:29:08:570PM	980122038	Joseph Snipes	It became clear that the RF did not heat very well when the resonance was off axis at low or high field, though the high field (6.2 T) may be somewhat better than the low field (4.5 T). Confinement clearly increased with increasing plasma current and the best H-modes had H factors up to nearly 1.8. Stored energies up to 200 kJ were obtained with less than 3 MW of RF (e.g, shot 9) by ramping up the plasma current up to 1.2 MA.
Jan 22 1998 05:29:57:360PM	980122038	Joseph Snipes	The MHD activity still needs to be analyzed in detail to determine if there were any interesting modes. EDA H-mode appears to be have an Ip dependence in that it is more difficult to obtain EDA at higher current. It is also more difficult to obtain EDA at low field, though that may be simply because the RF resonance is too far off axis. There appeared to be a hysteresis effect in that the EDA was hard to obtain by starting at 1.2 MA, but if you start at 0.8 MA and get into EDA there, the EDA can be maintained up to at least 1.2 MA. Indeed, the last shot remains in EDA H-mode up to nearly 1.4 MA, though multiple RF trips and a moly injection were probably responsible for losing the EDA H-mode on that shot. Granetz also noted that the soft x ray pedestal width decreased faster than linearly with increasing Ip in steady state EDA H-mode. Boivin noted some interesting D high energy tails at low field where an edge resonance comes into the plasma.

Physics Operator Comments
Jan 21 1998 09:47:57:590AM		Steve Wolfe	Setting up for tomorrow's run. Load from 980120027 (1MA EDA) Seg 2: Change NL4 to 1.2 Seg1: Import from 980121001 Seg 3: Import from seg2; put in Ip ramp 0.8 -> 1.2MA Seg 4: Import from seg2; go to 1.2MA, ramp down to .8MA Did a build_all and got a factor message about IP (old factor 3.5e-6) I changed one digit and hit return, and it ran thru. Build all seems to be doing some funny checking. Save as 980122999 in pcs$wolfe
Jan 21 1998 03:00:27:290PM		Steve Wolfe	Talked to Joe, who decided we should set the nl4 back to 1.0e20. Load_from pcs$wolfe: 98012299; change all nl4 to 1.0e20 (seg 2,3,4) build_all save as 980122999
Jan 22 1998 07:40:56:830AM		Steve Wolfe	Morning setup for run 980122 Frank reports that ECDC at 1.e-4 was causing overtemp alarms at F-port; now running at 5e-5. PCS: LOad_From pcs$wolfe:pcs_980122999 change Br offset from .0055 to .005 Load/clean Load at 22-Jan-1998 07:17:34.00 @HYBINIT_DISPATCH.COM coldstart ok.
Jan 22 1998 07:42:49:110AM		Steve Wolfe	Run plan for Thursday, 980122 MP #192 Dynamic q-scans SL: Snipes PO: wolfe Engineering setup: ECDC in D2 for a few hours in the morning begin as on 980120027, except TF limit set to 185kA TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enabled fill B-top with 6 PSI of D2, hybrid enabled fill B-side-lower with 1 PSI of Ar, hybrid not enabled ECE gate valve enabled; others if diagnosticians are ready. RF will be required on all shots. At least 2.5MW net power is requested, from t=0.4sec to t=1.2sec. Targets (we hope) will be EDA H-modes, with varying current and toroidal field.
Jan 22 1998 07:43:03:110AM		Steve Wolfe	Run Plan: -------- The purpose of this experiment is to determine the effect of a change in safety factor on confinement in Enhanced Da (EDA) H-modes, to better understand their stability, and to better diagnose the conditions under which they occur. The idea of the experiment is to dynamically ramp the plasma safety factor during the EDA H-mode to attempt to determine the causes of its stability as well as the limits of its operation. By ramping the plasma current or toroidal field, the q profile can be changed to determine how the location of particular rational q values (e.g., q=4) affects the EDA stability.
Jan 22 1998 07:55:57:240AM		Steve Wolfe	0.) EDA H-modes should be obtained under standard conditions (BT=5.3T, Ip=1MA, nl04 = 1.0e20m-2, PRF= 2.5 MW) ( ~ 5 shots). 1.) Once EDA H-modes are obtained, ramp the plasma current up from 0.8 to 1.2 MA over 0.6 sec during the EDA H-mode. The RF should turn on 0.2 sec prior to the start of the ramp to allow the plasma to get into a fully developed EDA H-mode before the ramp starts. So, the RF should run at ~ 2.5 MW from t=0.4 sec to t=1.2 sec and Ip should ramp from 0.6 sec until 1.2 sec. 2.) Then, run the opposite discharge ramping Ip down from 1.2 to 0.8 MA during the EDA H-mode. The qpsi(a) should vary from about 2.8 to 4.3 (4 shots). 3.) Then, returning to 1 MA, the TF will be ramped starting at 0.6 sec from 6.2 T to about 4.5 T during the EDA H-mode. The plasma current should be flat at 1 MA from about 0.45 sec to 1.2 sec. 4.) Next, breakdown as usual around 5.3 T, then ramp the TF down from t=0 to 4.5 T around 0.4 sec and maintain until 0.6 sec, then ramp the TF up to 6.2 T at 1.2
Jan 22 1998 07:56:30:780AM		Steve Wolfe	sec during the EDA H-mode (4 shots). Here, qpsi(a) should vary from about 2.9 to 4 . 5.) If the results indicate that more variation in q is desirable, it should be possible to ramp both Ip and BT simultaneously in opposite directions starting from the downward BT ramp from 6.2 T to 4.5 T and including an upward Ip ramp over the same 0.6 sec interval from 0.8 - 1.2 MA. This would give a change in qpsi(a) from about 5 to 2.4. If time permits, this could be done in two steps, one at high q and the other at low q. The first could start at 6.2 T and 0.8 MA, then ramp Ip down to 0.7 or even 0.6 MA during the EDA H-mode. Low q could then be attempted by running at 1.2 MA and 5.3 T, then ramping down the TF to 4.5 T just before the end of the Ip flattop during EDA H-mode.
Jan 22 1998 08:35:30:500AM	980122001	Steve Wolfe	Shot 1: seg 1 from 980121001, except TF at 150000 and Br =.005 Seg2: 1MA, 1.e20 loaded 22-Jan-1998 07:46:49.00 First shot in INIT 08:21 plasma to 1.62sec, EDA H-mode, Prf=2.2MW density has an early lump to 2.3, then back to flat at 1.85, nl4 W>=160kJ. breakdown looks good, Br still a bit positive.
Jan 22 1998 08:51:03:580AM	980122002	Steve Wolfe	Shot 2: Extend TF flattop to 1.4 in all segments RF adjusting tuning, demand plasma to 1.66sec; EDA with flat density, still 2.2MW W=163kJ. Br still a bit positive, slight hesitation. Next shot: same but with RF adjusted (aiming for 2.5)
Jan 22 1998 09:00:29:830AM	980122003	Steve Wolfe	Shot 3: Repeat, aiming for more RF plasma ; 1 RF tripped early, at .69, at about 2.5MW injection at .62 causes brief H-L, then back in H-mode. poor EDA at 1.3MW, < 120kJ for most of shot.
Jan 22 1998 09:16:08:430AM	980122004	Steve Wolfe	Shot 4: Try again for more RF. dud? No prepuff. No signal at valves on either valve. PLC settings are ok, maybe a glitch? hybrid signal for pg3 is ok at the hybrid.
Jan 22 1998 09:22:19:650AM	980122005	Steve Wolfe	Shot 5: Try again for more RF. Just repeat, watching the gas enables this time. fizzle. got gas this time. Br still positive. maybe time to tweak it down.
Jan 22 1998 09:31:59:490AM	980122006	Steve Wolfe	Shot 6: Try again for more RF. Br offset from .005->.0045 plasma, nice EDA, tiny injection at .92, got Prf=2.5MW W=180kJ.
Jan 22 1998 09:48:48:620AM	980122007	Steve Wolfe	Shot 7: Go to a .8MA->1.2MA ramp up (USING SEGMENT 3) plasma to 1.7sec, 1 RF tripped late (near 1.2sec) some kind of event at 1 sec (injection? , detachment?)drops out of good EDA. Max W before event =167kJ. OUter gap drops at about 1.3sec
Jan 22 1998 10:05:08:890AM	980122008	Steve Wolfe	Shot 8: Ramp RCUR in starting at 1.3sec change segment 3 RCUR offset from 8000->7000 Had accidentally made the change in seg 2, then reloaded that wire from 980122007 plasma , RF stayed on pretty well until 1.2 sec multiple injections, some elm-free phases. Gap may be a little more stable, still moves out at 1.3sec Next shot increase outer gap with RCUR waveform
Jan 22 1998 10:20:39:030AM	980122009	Steve Wolfe	Shot 9: RCUR from .669 to .667 during flattop; early Ip from .8 to .78 Noticed after INIT: IP controller switch is at 1.050; change for next shot to 1.4sec plasma- density rises with current, injection at about 1.2, drops out of EDA RF stays on at 2.6MW, W gets to 200kJ. Gap is still ramping down with current. Offset change didn't do it; I'll try ramping the RCUR instead.
Jan 22 1998 10:30:57:120AM	980122010	Steve Wolfe	Shot 10: Ramp RCUR from .669 at .5sec to .665 at 1.3sec Changed IP controller switch to 1.4sec from 1.050 RF will try for more power plasma, no RF trips. Got to 2.8MW, > 200kJ still an injection in rampdown. CLEARIN was ramping in at 1.2sec, next shot move to 1.4sec
Jan 22 1998 10:46:16:030AM	980122011	Steve Wolfe	Shot 11: Extend CLEARIN flattop to 1.4sec Frank is moving PF invert times to 1.9sec; the inverts were taking out the plasma at 1.7sec? RF will try to raise power again. plasma to 1.7sec still. RF flat at 3MW, tripped at 1.22; W=197kJ Go on to step 2: reverse current ramp.
Jan 22 1998 11:00:32:970AM	980122012	Steve Wolfe	Shot 12: Go to segment 4, current ramp-down from 1.2MA -> 0.8MA between 0.8 and 1.2sec, Reprogram RCUR to ramp from .665 to .669, CLEARIN out to 1.4 plasma, rf stayed on with glitches. Starts in ELM-free, then EDA. Gap is around 1.2cm, pretty flat. Stored energy max = 170kJ @.62sec Next shot make RCUR 1.5mm larger at all points after .4sec
Jan 22 1998 11:10:46:770AM	980122013	Steve Wolfe	Shot 13: RCUR 1.5mm larger at all points after .4sec plasma, lots of RF trips Either marginal EDA or type III elmy h-mode until .89sec, EDA after 1 sec, at lower current. Got to 197kJ at .72sec, with Ip = 1.2MA Next shot RF will try for 2.5MW, see if it will stay on
Jan 22 1998 11:20:47:050AM	980122014	Steve Wolfe	Shot 14: RF will try for 2.5MW, see if it will stay on RF stays on better, Mode change at .9sec or so. Next shot, make the gap smaller.
Jan 22 1998 11:35:54:790AM	980122015	Steve Wolfe	Shot 15: Turn on Argon (20msec @1psi) increase RCUR by 1.5mm at all relevant times (ramp is now from .668 to 672) plasma, RF stayed on except for one glitch at the mode change, which still happens around .86, then H-L, L-H, EDA. Initial EDA is not good, Prad is ramping up. Peak wmhd=191kJ at 1.2MA. Next shot, go to 1.2e20 in target.
Jan 22 1998 11:48:50:810AM	980122016	Steve Wolfe	Shot 16: NL4 to 1.2e20 (was 1.0) to try to enhance the EDA at 1.2MA fizzle. Bz may be a touch positive, but it looks ok. Also, f-side pressure is up a bit (to .065-.070) Just go again.
Jan 22 1998 11:59:55:950AM	980122017	Steve Wolfe	Shot 17: NL4 to 1.2e20 (was 1.0) to try to enhance the EDA at 1.2MA just repeat and see if it comes back. It didn't. Another fizzle. bd is a little late 7.7msec; CII is up to .002; Br is good. Current rise is slow, so is Bz; RCUR error is near 0, was 2000 earlier
Jan 22 1998 12:05:15:310PM	980122018	Steve Wolfe	Shot 18: Seg1 RCUR offset to 7000 (from 5800) NL4 to 1.2e20 (was 1.0) to try to enhance the EDA at 1.2MA Another fizzle! where have I lost it?
Jan 22 1998 12:28:11:620PM	980122019	Steve Wolfe	Shot 19: Seg1 EF4 from -1330 to -1345 RCUR offset to 7000 (from 5800) NL4 to 1.2e20 (was 1.0) to try to enhance the EDA at 1.2MA plasma, but multiple h-modes; RF #1 didn't stay on. bd is earlier, current rise looks ok, no hesitation. density is only up to 1.1e20.
Jan 22 1998 12:41:35:150PM	980122020	Steve Wolfe	Shot 20: Increase seg 4 pg3 from 50 to 70 before .5sec to help get to density Argon off. plasma, 2ELM free or marginal EDAs, then one solid EDA injection at .58 isn't helping matters. Next shot raise density a little more
Jan 22 1998 12:53:59:460PM	980122021	Steve Wolfe	Shot 21: nl4 to 1.4e20. fizzle. late bd 7.2msec (previous was 5.4)
Jan 22 1998 01:12:28:050PM	980122022	Steve Wolfe	Shot 22: Seg1 RCUR offset back 6000, pre-puff to 14msec NL4 to 1.4e20 in seg4 plasma, multiple h-modes still an injection at .58 bd still late (7.2msec, slight hesitation)
Jan 22 1998 01:27:30:330PM	980122023	Steve Wolfe	Shot 23: delay ZXL drop to .6 sec, to try to eliminate injection. Br offset to .004 from .0045 (it looked high on last shot) plasma, still multiple h-modes. 1 RF trips out at .62 Still have injection at .53sec bd at .63, hesitation is a little worse
Jan 22 1998 01:39:59:660PM	980122024	Steve Wolfe	Shot 24: delay ZXL drop some more, to try to eliminate injection. plasma, 2 h-modes, first ooks like weak EDA, second at 1MW, but deep EDA. small injection at .62sec, but looks better. Wmhd peaks at 180kJ, around 610msec bd a little earlier. Sergei will reduce voltage on xmitter 1 to avoid screen overcurrent. This is advertised to take 15minutes.
Jan 22 1998 02:02:33:070PM	980122025	Steve Wolfe	Shot 25: Delay RF to .6sec. Also, Sergei has done something to the voltage of #1 to prevent the screen overcurrent trips. plasma, H-mode starts at .8, single EDA for the ramp. wmax=180kJ Next shot, try for higher power and turn on Argon
Jan 22 1998 02:15:35:590PM	980122026	Steve Wolfe	Shot 26: try for higher power and turn on Argon plasma ; two stages of EDA, with a small injection at .97 Move on to tf ramps. 196kJ.
Jan 22 1998 02:28:56:210PM	980122027	Steve Wolfe	Shot 27:On to step 3, 1MA, TF ramping up, then down. Using Segment 2 again. Modify clearin end point, Ip controller switch to 1.4sec plasma , got the tf sweep. EDA turning into type III at around 1 sec. 2.2MW, 130kJ, not such a good H-factor this time.
Jan 22 1998 02:49:28:070PM	980122028	Steve Wolfe	Shot 28: Repeat, RF will try for more power. Ar on this shot. plasma to 1.5+sec, decent EDA from .68 to 1.12sec, some glitches earlier and later. Injection at .54sec Prf=2.6, W<110kJ Rejean says he is seeing edge tails. NOTE: EFIT has a problem because of corrupted traq1 data. I'll re-run it later.
Jan 22 1998 02:57:29:850PM	980122029	Steve Wolfe	Shot 29: Copy ZXL from seg 4 to seg2 to try to alleviate .53 injection. Argon back off. Lots of hard xrays this time. bad hesitation injection at .83sec causes it to go from EDA to less so, increases radiation. Gets to 150kJ with almost 3MW.
Jan 22 1998 03:10:31:160PM	980122030	Steve Wolfe	Shot 30: EF4 back to -1330 to try to stop the runaways. plasma long H-mode, loses EDA-ness as it goes along. about 160kJ around .7 sec, at 3MW
Jan 22 1998 03:23:27:700PM	980122031	Steve Wolfe	Shot 31: Still in segment 2, go to condition 4, ramp tf down to 4.5, then up to 6.2. plasma, lots of H-L/L-H transitions, only got down to 4.6, next shot drop program points to 122kA.
Jan 22 1998 03:46:55:020PM	980122032	Steve Wolfe	Shot 32: Change low tf current plateau to -122kA from -125 to get 4.5T plasma, RF stays on, but 4 h-modes. one clear injection at .94, but the rest seem to be radiating to death. stored energy only to 130kJ or so in any interval. PRf=2.5MW
Jan 22 1998 03:55:59:700PM	980122033	Steve Wolfe	Shot 33: repeat, trying for higher RF plasma. only 1MW after .7sec big injection at .7sec, gives H-L, then L-mode until 1.1sec, then EDA at 6.2T and rampdown, with only 1MW.
Jan 22 1998 04:17:14:200PM	980122034	Steve Wolfe	Shot 34: case "4.5", maintain 5.4T until .6sec, then ramp down to 4.5T, ramp ip up from .8 to 1.2MA. Using segment 3, as on shot 11, except for TF. plasma disrupts at 1.35, just below 1MA. several h-modes, including one longish EDA from 0.6 to 0.9
Jan 22 1998 04:26:29:660PM	980122035	Steve Wolfe	Shot 35: nl4 to 1.2, hold tf at 122kA from 1.2 : 1.4sec. plasma to 1.37sec, multiple h-modes, hardly any EDA. next shot, copy ZXL from seg4 to seg3
Jan 22 1998 04:46:09:250PM	980122036	Steve Wolfe	Shot 36: back to 1MA, 5.4T constant conditions, to see if we still get a good EDA. Now using segment 2 again, as on shot 6. plasma, big injection early, first h-mode is poor, but second is nice EDA. 150kJ with 2.3MW.
Jan 22 1998 04:53:25:900PM	980122037	Steve Wolfe	Shot 37: Ramp to 1.5MA, 5.7T constant (segment 3). NOTE: All_p's screen did not let me draw 1.5MA, it kept limiting at 1.2. EDIT_wire did allow me to draw to 1.5MA. We've got to get rid of the damn limits in PCS! fizzle. Perhaps a sign that we shouldn't do that? late bd. 10msec, bz looks too high again.
Jan 22 1998 05:06:06:390PM	980122038	Steve Wolfe	Shot 38: EF4 back to -1345A Ramp to 1.5MA, 5.7T constant (segment 3). NOTE: All_p's screen did not let me draw 1.5MA, it kept limiting at 1.2. EDIT_wire did allow me to draw to 1.5MA. We've got to get rid of the damn limits in PCS! plasma, disrupted at 1.3sec, only got to 1.4MA, disrupted at 1.25MA or so. one transmitter died almost immediately, so we got Prf < 1.5MW, got to 160kJ anyway.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	08:23:31:940AM	Plasma	Ok	no faults, plasma start 08:23
2	08:42:08:630AM	Plasma	Ok	no faults, plasma
3	08:53:50:200AM	Plasma	Ok	no faults/plasma
4	09:04:57:840AM	Plasma	Ok	no faults
5	09:16:35:930AM	Plasma	Ok	no faults
6	09:26:01:540AM	Plasma	Ok	no faults/plasma
7	09:36:40:460AM	Plasma	Ok	no faults/plasma
8	09:57:30:950AM	Plasma	Ok	no faults/plasma
9	10:11:50:440AM	Plasma	Ok	no faults/plasma
10	10:25:30:650AM	Plasma	Ok	no faults/plasma
11	10:36:38:110AM	Plasma	Ok	no faults/plasma
12	10:51:17:400AM	Plasma	Ok	no faults/plasma
13	11:03:51:630AM	Plasma	Ok	no faults/plasma
14	11:16:24:980AM	Plasma	Ok	no faults/plasma
15	11:28:39:930AM	Plasma	Ok	no faults/plasma
16	11:42:02:440AM	Plasma	Ok	no faults
17	11:52:16:290AM	Plasma	Ok	no faults
18	12:04:11:660PM	Plasma	Ok	no faults
19	12:15:29:650PM	Plasma	Ok	no faults/plasma
20	12:32:45:080PM	Plasma	Ok
21	12:46:21:810PM	Plasma	Ok
22	01:00:17:400PM	Plasma	Ok
23	01:17:12:870PM	Plasma	Ok
24	01:30:33:740PM	Plasma	Ok
25	01:56:33:200PM	Plasma	Ok
26	02:10:11:890PM	Plasma	Ok
27	02:22:57:040PM	Plasma	Ok
28	02:36:48:420PM	Plasma	Ok
29	02:49:42:800PM	Plasma	Ok
30	03:04:41:560PM	Plasma	Ok
31	03:18:17:180PM	Plasma	Ok
32	03:37:04:650PM	Plasma	Ok
33	03:49:46:360PM	Plasma	Ok
34	04:08:44:400PM	Plasma	Ok
35	04:21:37:850PM	Plasma	Ok
36	04:33:56:400PM	Plasma	Ok
37	04:48:55:000PM	Plasma	Ok
38	04:57:24:910PM	Plasma	Ok