| Miniproposals | ||||||||||
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| Operators | |
| Session leader(s): | Brian Labombard,Steve Wukitch |
| Physics operator(s): | Bill Rowan,Steve Wolfe |
| Engineering operator(s): | Unknown |
| Engineering Operator Run Comment |
| Boronization Recovery, MP#297 and RF Cond. SL:Labombard, Wukitch; PO: Ro |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:27:600PM |
| Author: To Be Determined |
| Session leader summary for 1010723 MP# 297: Neutral particle control, fueling, and gas inventory experiments using helium Session Leader - Brian LaBombard Purpose: The goals of these experiments are twofold: (1) quantify the relative contributions to the midplane neutral pressure of divertor neutral leakage and main-chamber plasma recycling, and (2) perform full accounting of the fuel particle inventory in the vessel including gas and plasma phases in the lower divertor, main-chamber, and upper chamber regions. Shot Plan: - overnight ECDC in helium, helium discharges - vary the flappers that are operated from shot to shot, flapper opening time 0.3 - 1.5 seconds, opening and closing with a period of 200 ms. 1-2) get shot set up. Probe set up. Maximize density w/o saturating Penning gauges. 3) J,K A 4) B,C,D 5) C,D,E 6) F,G,H 7) A,B,C 8) higher density (nl04 ~ 1.4) F,G,H 9) higher density A,B,C 10) fizzle programmed if needed. Result: Shots 1-9 (5 actual plasmas) were spent tweaking the conditions for the MP. We learned the hard way that there is a narrow operating window in helium discharges where there is sufficient helium pressure in the divertor (> 40 mtorr) to allow the flappers to 'fuel' the plasma yet the divertor is not detached. We decided to ramp the density slowly during the discharge to avoid the detachment state or to delay it until the end of the shot. This seemed to work with the exception of shot 12 when we tried to ramp the density too fast and got the detached state early in the shot. It appears that the response of helium plasmas to the flapper opening is very similar to deuterium plasma, suggesting that wall pumping does not affect the gas-fueling transient that occurs when the flapper is opened. As in the deuterium plasma, the midplane pressure is more tied to the line-averaged density than the magnitude of the local divertor bypass conductance. We did two shots with a fixed pulsed gas programming. To our surprize this resulted in a noticeably smaller wiggle in the line-averaged density in response to the flapper modulation. This suggests that the delay in the pulsed gas affecting the plasma combined with the chosen 200 ms flap period might have amplified of the influence of the flapper on the line density. The following shots are good for detailed analysis. -> similar density programing with active pulsed gas feedback: Shot 10 - B C D flapper Shot 11 - C D E flapper Shot 14 - F G H flapper Shot 15 - A B C flapper Shot 18 - J K A flapper - > fixed gas programing using that of shot 14: Shot 21 - F G H J flapper Shot 22 - B C D flapper -> Fizzles for Penning gauge calibration: Shot 1 - two of three Penning gauges operating Shot 6 - higher pressure, three gauges Shot 9,13 - three gauges Shot 16 - two gauges Shot 17 - three gauges Detailed Shot Log: Shot 1 - Fizzle. D2 prefill with a short He puff. -> may be able to use this as a Penning gauge calibration. CB_OutL and KA_OutL turned on - signal is very clean. KA_OutU did not turn on. Flappers J K A will be operated on the next shot: open/close with 200 msec period starting at 0.35 seconds. Shot 2 - No power shot Shot 3 - Helium plasma, NL04 around .95 J K A flappers operating - no density modulation seen. A very weak pressure modulation is seen on the KA_OutL gauge. Neutral pressures are low everywhere. B-bottom is around 20 mtorr. Next shot: raise NL04 to 1.3. Also tweak outer gap. Shot 4 - Helium plasma, NL04 out of control, up to 2.2! Divertor appears to detach when NL04 goes above 1.35 J K A flappers operating - no density modulation seen. During detachment, E-top and B-bottom have same pressure. Next shot: try NL04 1.2 . Drop x-point by 1 cm. Shot 5 - Helium plasma, NL04 high, flat at ~1.6 J K A flappers operating - no density modulation seen. Very low pressures in lower divertor. We seem to be stuck in a detached divertor mode at the moment. Next shot: try to get control on NL04. Increase distance to secondary separatrix. Shot 6 - Fizzle. Torus pressure goes to 2.5 mtorr. Penning gauges are operating - may be good calibration shot. Shot 7 - Helium plasma, NL04 steady at 0.9 until H-mode after 1.2 seconds. Only 15-20 mtorr in divertor. A K J flappers running. Very weak modulation on KA_OutL gauge seen. Next shot ramp NL04 Shot 8 - Helium plasma, NL04 ramps from .9 to 1.2 prior to H-mode at 1.2 sec. - better. divertor pressure rises to 32 mtorr. A K J flappers running. Stronger modulation on KA_OutL gauge seen. Next shot - higher density ramp. Shot 9 - Fizzle. Torus pressure goes to 0.6 mtorr. Penning gauges are operating. - can use this shot for calibration. Shot 10 - Helium plasma, NL04 ramps to 1.4 at 1.2 seconds. B C D flappers running. Density modulations seen. Divertor pressure goes to 40 mtorr. Next shot: increase NL04 ramp rate. Go to C,D,E flappers. Shot 11 - Helium plasma, NL04 ramps to 1.5 at 1.2 seconds. C D E flappers running. Density modulations seen. Divertor pressure goes to 50 mtorr. Next shot: again increase NL04 ramp rate. Go to F,G,H flappers. Shot 12 - Helium plasma, NL04 out of control again, exceeding 1.8 F G H flappers running. No density modulations seen. Detached divertor. Next shot: go back to density program for shot 11 with small tweak. Shot 13 - Fizzle - good Penning gauge calibration shot. Shot 14 - Helium plasma, NL04 ramping to 1.5 F G H flappers running. Density modulations seen near 1.2 s. Next shot: repeat with A B C flappers. Shot 15 - Helium plasma, NL04 ramping to 1.5 A B C flappers running. Large density modulations. Next shot: repeat with J K A flappers. Shot 16 - Fizzle. KA_OutL and CB_OutL gauges operating (KA_OutU did not ignite) Potential calibration shot. Shot 17 - Fizzle. KA_OutL, CB_OutL, and KA_OutU gauges operating. Potential calibration shot. Shot 18 - Helium plasma, NL04 ramping to 1.5 J K A flappers running. Density modulations seen Shot 19 - no power cycle Shot 20 - Dud Shot 21 - Helium plasma, NL04 ramping to 1.5 Gas programming from shot #14 loaded for this shot. F G H J flappers running. No density modulation seen! Why? Next shot: same gas programming with B C D flappers running. Shot 22 - Helium plasma, NL04 ramping to ~1.5 Gas programing from shot #14 loaded for this shot. B C D flappers running. Density modulation seen. - Not any stronger than when gas feedback was on. This is the last shot for this MP. RF taking over last shots of run. Shot 23 - no power cycle Shot 24 - This shot was for the RF group; 3 MW RF injected. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:14:113PM |
| Author: To Be Determined |
| Physop Summary for 1010723 Session leader (MP297): Brian Labombard Session leader (RF Conditioning): Steve Wukitch Physics operator: Bill Rowan/Steve Wolfe ENGINEERING SETUP BEFORE BORONIZATION: Starting at the end of the run on Friday, GDC in Helium AFTER BORONIZATION: ECDC in HELIUM stopping by 8:00 am on Monday. Run begins at 10:00 and ends at 17:00. Power systems the same as for shot 1010720006. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi HELIUM Hybrid enabled (PG3) fill J-Bottom with 30 psi He Hybrid DISABLED(PG5) Enable the following gate valves, assuming no vacuum problems: ECE, DNB, VUV RF STATUS: Transmitters 1 and 2 in run-on started at 08:00. Transmitters 3 and 4 in run-on started at 08:00. RUN PLAN Boronization Recovery MP#297 Neutral Particle Control RF conditioning Start with MP 297 and continue until complete. RF conditioning in piggyback mode. After MP 297, continue with RF conditioning. RUN SUMMARY Began with shot 1010720006. The first shot was a fizzle. The second a no power shot due to a breach. At this point, we were able to begin experiments. Refer to the Session Leader summary for that. The setup for the experiments consisted of various forms of density ramps with small variation in the x-point location. Except for some gas control problems, the boronization recovery was uneventful. SCORE CARD Plasmas 14 Fizzles 6 Duds. 1 No power cycles 3 (1 breach, I2t fault, camac alarm during init) Total 24 |
| Session Leader Comments | |||
| Jul 23 2001 09:54:53:537AM | 1010723001 | Brian Labombard | Shot 1 - Fizzle. D2 prefill with a short He puff. -> may be able to use this as a Penning gauge calibration. CB_OutL and KA_OutL turned on - signal is very clean. KA_OutU did not turn on. Flappers J K A will be operated on the next shot: open/close with 200 msec period starting at 0.35 seconds. |
| Jul 23 2001 10:42:47:763AM | 1010723003 | Brian Labombard | Shot 3 - Helium plasma, NL04 around .95 J K A flappers operating - no density modulation seen. A very weak pressure modulation is seen on the KA_OutL gauge. Neutral pressures are low everywhere. B-bottom is around 20 mtorr. Next shot: raise NL04 to 1.3. Also tweak outer gap. |
| Jul 23 2001 11:00:02:887AM | 1010723004 | Brian Labombard | Shot 4 - Helium plasma, NL04 out of control, up to 2.2! Divertor appears to detach when NL04 goes above 1.35 J K A flappers operating - no density modulation seen. During detachment, E-top and B-bottom have same pressure. Next shot: try NL04 1.2 . Drop x-point by 1 cm. |
| Jul 23 2001 11:40:27:777AM | 1010723005 | Brian Labombard | Shot 5 - Helium plasma, NL04 high, flat at ~1.6 J K A flappers operating - no density modulation seen. Very low pressures in lower divertor. We seem to be stuck in a detached divertor mode at the moment. Next shot: try to get control on NL04. Increase distance to secondary separatrix. |
| Jul 23 2001 12:05:36:940PM | 1010723006 | Brian Labombard | Shot 6 - Fizzle. Torus pressure goes to 2.5 mtorr. Penning gauges are operating - may be good calibration shot. |
| Jul 23 2001 12:25:33:800PM | 1010723007 | Brian Labombard | Shot 7 - Helium plasma, NL04 steady at 0.9 until H-mode after 1.2 seconds. Only 15-20 mtorr in divertor. A K J flappers running. Very weak modulation on KA_OutL gauge seen. Next shot ramp NL04 |
| Jul 23 2001 12:38:38:693PM | 1010723008 | Brian Labombard | Shot 8 - Helium plasma, NL04 ramps from .9 to 1.2 prior to H-mode at 1.2 sec. - better. divertor pressure rises to 32 mtorr. A K J flappers running. Stronger modulation on KA_OutL gauge seen. Next shot - higher density ramp. |
| Jul 23 2001 12:44:25:080PM | 1010723009 | Brian Labombard | Shot 9 - Fizzle. Torus pressure goes to 0.6 mtorr. Penning gauges are operating. - can use this shot for calibration. |
| Jul 23 2001 01:07:29:160PM | 1010723010 | Brian Labombard | Shot 10 - Helium plasma, NL04 ramps to 1.4 at 1.2 seconds. B C D flappers running. Density modulations seen. Divertor pressure goes to 40 mtorr. Next shot: increase NL04 ramp rate. Go to C,D,E flappers. |
| Jul 23 2001 01:19:42:320PM | 1010723011 | Brian Labombard | Shot 11 - Helium plasma, NL04 ramps to 1.5 at 1.2 seconds. C D E flappers running. Density modulations seen. Divertor pressure goes to 50 mtorr. Next shot: again increase NL04 ramp rate. Go to F,G,H flappers. |
| Jul 23 2001 01:36:42:253PM | 1010723012 | Brian Labombard | Shot 12 - Helium plasma, NL04 out of control again, exceeding 1.8 F G H flappers running. No density modulations seen. Detached divertor. Next shot: go back to density program for shot 11 with small tweak. |
| Jul 23 2001 02:02:49:667PM | 1010723013 | Brian Labombard | Shot 13 - Fizzle - good Penning gauge calibration shot. |
| Jul 23 2001 02:15:43:500PM | 1010723014 | Brian Labombard | Shot 14 - Helium plasma, NL04 ramping to 1.5 F G H flappers running. Density modulations seen near 1.2 s. Next shot: repeat with A B C flappers. |
| Jul 23 2001 02:32:30:853PM | 1010723015 | Brian Labombard | Shot 15 - Helium plasma, NL04 ramping to 1.5 A B C flappers running. Large density modulations. Next shot: repeat with J K A flappers. |
| Jul 23 2001 02:49:46:147PM | 1010723016 | Brian Labombard | Shot 16 - Fizzle. KA_OutL and CB_OutL gauges operating (KA_OutU did not ignite) Potential calibration shot. |
| Jul 23 2001 03:04:32:683PM | 1010723017 | Brian Labombard | Shot 17 - Fizzle. KA_OutL, CB_OutL, and KA_OutU gauges operating. Potential calibration shot. |
| Jul 23 2001 04:04:36:167PM | 1010723018 | Brian Labombard | Shot 18 - Helium plasma, NL04 ramping to 1.5 J K A flappers running. Density modulations seen |
| Jul 23 2001 04:24:37:823PM | 1010723021 | Brian Labombard | Shot 21 - Helium plasma, NL04 ramping to 1.5 Gas programming from shot #14 loaded for this shot. F G H J flappers running. No density modulation seen! Why? Next shot: same gas programming with B C D flappers running. |
| Jul 23 2001 05:12:49:007PM | 1010723022 | Brian Labombard | Shot 22 - Helium plasma, NL04 ramping to ~1.5 Gas programing from shot #14 loaded for this shot. B C D flappers running. Density modulation seen. - Not any stronger than when gas feedback was on. This is the last shot for this MP. RF taking over last shots of run. |
| Physics Operator Comments | |||
| Jul 23 2001 09:08:32:590AM | Bill Rowan | Run Plan and Engineering Setup for Monday 1010723 Boronization Recovery MP#297 Neutral Particle Control RF conditioning Start with MP 297 and continue until complete. RF conditioning in piggyback mode. After MP 297, continue with RF conditioning. Session leader (MP297): Brian Labombard Session leader (RF Conditioning): Steve Wukitch Physics operator: Bill Rowan BEFORE BORONIZATION: Starting at the end of the run on Friday, GDC in Helium AFTER BORONIZATION: ECDC in HELIUM stopping by 8:00 am on Monday. Run begins at 10:00 and ends at 17:00. Power systems the same as for shot 1010720006. Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid enabled (PG1) fill B-side upper with 10 psi D2 Hybrid DISABLED (PG2) (for ECDC) fill C-side with 30 psi HELIUM Hybrid enabled (PG3) fill J-Bottom with 30 psi He Hybrid DISABLED(PG5) Enable the following gate valves, assuming no vacuum problems: ECE, DNB, VUV RF STATUS: Transmitters 1 and 2 in run-on started at 08:00. Transmitters 3 and 4 in run-on started at 08:00. Run plan for 1010723 MP# 297: Neutral particle control,fueling,and gas inventory experiments using helium session leader - Brian LaBombard Purpose - The goals of these experiments are twofold: (1) quantify the relative contributions to the midplane neutral pressure of divertor neutral leakage and main-chamber plasma recycling, and (2) perform full accounting of the fuel particle inventory in the vessel including gas and plasma phases in the lower divertor, main-chamber, and upper chamber regions. ECDC overnight in He All shots with D prefill, He puff Setup: reload shot 1010720006 with the following changes: nl04 = 1.2e20 as soon as possible. outer gap 1.3 cm scan the lower x-point in in major radius 1 cm over the period 0.5-1.5 seconds. This will keep the outer strike point more controlled. RF on from 1.2 - 1.5 seconds Shot sequence: vary the flappers that are operated from shot to shot, flapper opening time 0.3 - 1.5 seconds, opening and closing with a period of 200 ms. 1-2) get shot set up. Probe set up. Maximize density w/o saturatin Penning gauges. 3) J,K A 4) B,C,D 5) C,D,E 6) F,G,H 7) A,B,C 8) higher density (nl04 ~ 1.4) F,G,H 9) higher density A,B,C 10) fizzle programmed if needed. | |
| Jul 23 2001 09:26:17:380AM | Bill Rowan | Loaded 1010720006. Will make no changes until I get a plasma and find out what I have. 23-JUL-2001 09:21:02.02 END COLD START ****************** *************** END COLDSTART ****************** | |
| Jul 23 2001 10:03:44:657AM | 1010723001 | Bill Rowan | 001. fizzle. For next shot. Increase prefill from 20 ms to 22 ms. Change ic_ef4 from -1300 to -1270. |
| Jul 23 2001 10:11:52:467AM | 1010723002 | Bill Rowan | 002. No power shot. There was a breach. Traced to a person trying to service film badges. There was no actual entry. The door was only pushed. Misunderstanding due to the unusual Monday run. Next shot. No changes. |
| Jul 23 2001 10:38:19:227AM | 1010723003 | Bill Rowan | 003. Plasma. At last. Moved the fizzle detector to 0.16 and will leave it there until after the next fizzle (heaven forbid). This is for the edge guys to calibrate a gauge. Next shot. Increase the density target to nl_04=1.2e+20 Increase the outer gap toward 1.3 cm from 1 cm. |
| Jul 23 2001 11:05:20:943AM | 1010723004 | Bill Rowan | 004. Disruption at 0.67s. nl_04 took off and reached 2e20. Density exceeded demand. May be a TCI problem. For the next shot: Changed the density demand to 1.1e+20. Lowered the x-point by 1 cm at request of probe-folk Reduced the inner gab by 0.5 cm. Reduced RCUR by 0.2 cm to maintain the outer gap |
| Jul 23 2001 11:26:20:630AM | 1010723005 | Bill Rowan | 005. Plasma. Disruption on the rampdown: 1.6 s Density exceed demand. Gas valve is off so it is doing this on its own. Next shot. Reduce demand to 0.85e+20 |
| Jul 23 2001 11:37:47:757AM | 1010723005 | Bill Rowan | Moved rxu by +2 cm. Moved zxu by -2 cm |
| Jul 23 2001 11:54:35:440AM | 1010723006 | Bill Rowan | 006. Fizzle Next shot. Return the fizzle detector to 80 ms Raise BZ by 1 mT Reduce prefill by 2 ms to 20 ms |
| Jul 23 2001 12:14:23:940PM | 1010723007 | Bill Rowan | 007. Plasma. NL_04 approx 0.93e+20 Next shot. Ramp the density toward 1.ee+20 Add 1 ms back to the prefill. Resulting in 21 ms prefill. |
| Jul 23 2001 12:34:05:563PM | 1010723008 | Bill Rowan | 008. Plasma Next shot. Raise the base from which the ne ramp starts. |
| Jul 23 2001 12:50:47:230PM | 1010723009 | Bill Rowan | 009. Fizzle Next shot. Changed the ne ramp at the request of the SL Increased BR by 0.5 mT |
| Jul 23 2001 01:04:30:517PM | 1010723010 | Bill Rowan | 010. Plasma. Next shot. Increased the ne ramp rate |
| Jul 23 2001 01:18:35:257PM | 1010723011 | Bill Rowan | 011. Plasma Next shot. Increase the ne ramp rate. |
| Jul 23 2001 01:36:54:270PM | 1010723012 | Bill Rowan | 012. Plasma. Disruption at 1 s. Reduced the ne ramp rate. |
| Jul 23 2001 02:03:03:510PM | 1010723013 | Bill Rowan | 013. Fizzle Both BR and BZ are reasonable. Not sure why this failed. Next shot. Increase the prefill by 1 ms. |
| Jul 23 2001 02:19:08:770PM | 1010723014 | Bill Rowan | 014. Plasma. Next shot. No changes |
| Jul 23 2001 02:30:34:023PM | 1010723015 | Bill Rowan | 015. Plasma. Disruption on the rampdown; that is, at 1.7s. Next shot. No changes |
| Jul 23 2001 02:56:21:280PM | 1010723016 | Bill Rowan | 016. Fizzle Next shot. Small change in BZ. Changed IC_EF4 from -1260 to -1250 |
| Jul 23 2001 03:09:11:863PM | 1010723017 | Bill Rowan | 017. Fizzle. Next shot. Added 2 ms to the prefill for 24 ms of gas Changed BZ. Changed IC_EF4 from -1250 to -1270 |
| Jul 23 2001 03:25:49:170PM | 1010723018 | Bill Rowan | 018. Plasma. Disruption during rampdown; that is, at 1.7s Next shot. No changes. |
| Jul 23 2001 03:41:44:320PM | 1010723019 | Steve Wolfe | shot#19: wolfe taking over as physop during the DNB meeting. no power cycle - RF and CAMAC alarms in INIT |
| Jul 23 2001 03:56:14:827PM | 1010723020 | Steve Wolfe | shot#20: dud! - thanks, Bill. next shot: EF4 to -1290, pressure up another 2ms |
| Jul 23 2001 04:12:49:197PM | 1010723021 | Steve Wolfe | shot#21: EF4 to -1290, pressure up another 2ms also turn off density feedback and pg3 load voltage from shot 14 per instruction of Blip. plasma. disrupts in rampdown. Some runaways, may need even more gas. Br is more positive again, Bz looks good to me but it's a late breakdown; barely made it. density isn't very modulated this time. next shot: raise pg4 another 2ms, drop Br by .5mT |
| Jul 23 2001 04:36:15:873PM | 1010723022 | Steve Wolfe | shot#22: raise pg4 by 2ms, drop Br by .5mT plasma, disrupted in rampdown breakdown still late, but current rise is fast still some runaways next shot: load seg2 from shot 7 and lower nl4 from .85 to .75e20 (per Wukitch) |
| Jul 23 2001 04:46:52:887PM | 1010723023 | Steve Wolfe | shot#23:reload seg2 from shot 7 and lower nl4 to 0.75e20 (per Wukitch) leave startup alone, since I'm not sure what to tweak. no power cycle - I2t fault in INIT #!_*_$*_!*+~# |
| Jul 23 2001 05:05:24:790PM | 1010723024 | Steve Wolfe | shot#24:reload seg2 from shot 7 and lower nl4 to 0.75e20 (per Wukitch) leave startup alone, since I'm not sure what to tweak. plasma, full length, had runaways again. 3 hmodes, the last one looks eda-ish RF got to 3MW, with a nice ramp up for threshold measure. breakdown is still late at 6.8msec. Maybe should have put EF4 back up to -1280, since the higher Bz cases had earlier breakdown; it would also help with the runaways perhaps. END OF RUN; at least we left a good one on the drum. |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:43:57:503AM | Plasma | Ok | |
| 2 | 10:05:01:097AM | Plasma | Ok | |
| 3 | 10:20:38:060AM | Plasma | Ok | |
| 4 | 10:39:54:260AM | Plasma | Ok | |
| 5 | 11:13:34:953AM | Plasma | Ok | |
| 6 | 11:39:45:637AM | Plasma | Ok | |
| 7 | 12:03:24:813PM | Plasma | Ok | |
| 8 | 12:22:32:093PM | Plasma | Ok | |
| 9 | 12:38:19:490PM | Plasma | Ok | |
| 10 | 12:54:27:733PM | Plasma | Ok | |
| 11 | 01:10:47:650PM | Plasma | Ok | |
| 12 | 01:28:09:350PM | Plasma | Ok | |
| 13 | 01:48:48:727PM | Plasma | Ok | |
| 14 | 02:04:59:763PM | Plasma | Ok | |
| 15 | 02:21:17:307PM | Plasma | Ok | |
| 16 | 02:43:53:200PM | Plasma | Ok | |
| 17 | 02:59:42:757PM | Plasma | Ok | |
| 18 | 03:13:44:823PM | Plasma | Ok | |
| 19 | 03:38:24:720PM | Plasma | Bad | No Power shot. Camac init error |
| 20 | 03:51:00:193PM | Plasma | Ok | |
| 21 | 04:04:19:230PM | Plasma | Ok | |
| 22 | 04:25:03:403PM | Plasma | Ok | |
| 23 | 04:45:42:777PM | Plasma | Ok | |
| 24 | 04:57:19:593PM | Plasma | Ok | |