Miniproposals

Miniproposal: 194 Date Filed: 10/3/1997 Title: ICRF Reversed Shear Mode with 3He minority at 80 MHz First Author: Miklos Porkolab Session Leader: Steve Wukitch (shots 1-15) Session Leader: Miklos Porkolab (shots 1-15)

Engineering Operator Run Comment

MP#194 Wukiitch/Porklab/Granetz

Session Leader Plans

Physics Operators Plans

Session Leader Summaries

Entered: Jul 7 2004 03:49:18:320PM

Author: To Be Determined

****980223****980223****980223****980223****980223****980223****980223****980223 MP#194 ICRF Reversed Shear Mode with 3He minority at 80 MHz SL: Wukitch/Porkolab PO: Granetz ECDC in deuterium overnight before the run. Two experiments will be run today. The first is the usual post-boronization breakdown experiments. The second is 8T ramp-up with early RF heating. The engineering setups are as follows: ------------ Engineering Setup ------------ 1. Post-boronization breakdown Make sure data trees are on. Recall setup from 980219004 (a standard 800 kA, nl_04~1.0x10^20, 5.4 T D(H) discharge) TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B-side-upper with 16 PSI of He3, hybrid disable Gate Valves: ECE others can be enabled upon request Once #1 is completed begin the 8T experiment which may run until 1830 hrs. 2. 8T ramp up with early RF heating Need to establish breakdown at 8T start with 980219006 and would like a ramp rate and plasma parameters similar to 980211032 move the start time to -1.9 sec engineering start trigger needs to be moved back move invert to 0.7 sec (maybe to as early as 0.4 sec) TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B-side-upper with 16 PSI of He3, hybrid enable Gate Valves: ECE LPI (lithium pellet injector) The goals for today are to: 1) Establish post-boronization fiducials (10 shots) 2) Investigate reverse shear discharge development with primarily an ion heater as opposed to electron heater as is the case for D(H). Good RF into nominal 500 kA/0.1 sec current ramp -- 1 MW early RF followed by a step to higher power (2.5-3 MW). establish breakdown at 8T vary the 3He concentration to find optimum puff to heat ions should be different from diverted plasma by factor of 3-4 10 msec puff w/ 10 V maintenance 10 msec puff w/ 20 V maintenance 10 msec puff w/ 35 V maintenance 5 msec puff w/ optimum maintenance 15 msec puff w/ optimum maintenance 20 msec puff w/ optimum maintenance 25 msec puff w/ optimum maintenance 35 msec puff w/ optimum maintenance maximize RF early RF power -- at least 1 MW early RF followed by a step to higher power (2.5-3 MW) increase current ramp rate 3) Inject Li pellet into 1 MW portion of discharge and step up the power in the second part >> extend PEP mode duration with reverse shear current profile (5-7 shots) probably will require multiple pellets timing of the RF and pellet will be varied Overnight ECDC in D2 Shakedown... 001 scanner test 002 scanner test 003 EF3 test under PLC control 004 OH test (Tuesday test) next shot: plasma attempt (recalling 980219004) (ST1/PS1; ST2/PS2) (407/599; 2543/933) 005 plasma mix of EF and EDA 100 kJ series of injections phase balance faults on #2 no YAG data 15-20% increase in density with RF H/(H+D)~1.2-1.8% next shot: repeat enable moly monitor and VUV gate valves 006 plasma EDA 128 kJ density increase with RF is smaller (~5%) H/(H+D)~1.2-1.4% -- PCX 0.7 % (+- 0.2) hydrogen fraction, as measured at t=0.625, in the divertor next shot: repeat (405/602;-/-) 007 plasma EDA 122 kJ density increase with RF is same as 006 large injections 0.7 % (+- 0.2) hydrogen fraction, as measured at t=0.625, in the divertor next shot: go to 8T; recall shot 980219006 to get tuning try to breakdown at 8T which is new Ip->1.2 MA, nl_04~1x10^20 m^-2 (418/589; 989/2443) gas setup: 30 msec @100 V starting .45 /w 35 V maintenance 008 not an 8T plasma misload on TF currents and other programming Ip->1 MA early disruption phase balance detector faults on #2 two large injections one near the end of the RF pulse next shot: retry for 8T 009 plasma H-mode 150 kJ no ECE gate valve was closed good Pabs analysis shot sawteeth starts around 360-370 msec next shot: gas setup - 10 msec @100 V starting .07 /w 15 V maintenance RF setup: 1 MW @0.1 sec ramp up to 2.5 MW @0.15 sec 010 fizzle 011 plasma #1 screen overcurrent 1st sawtooth crash ~0.26 sec 012 plasma disrupt~0.48 sec markedly better heating after plasma goes diverted 1st sawtooth crash ~0.25 sec off a turnon following a trip the ECE indicates off axis electron absorption followed by radiative cooling of the edge next shot: insert RF notch in early RF (409/560; 951/2368) 013 plasma disrupt~0.8 sec ECE indicates off-axis absorption on electrons peaking around channel Te2 -- need to lower He concentration phase balance faults on #1 & #2 @0.1513, -0.004,+0.001 no sawteeth to confuse absorption Te0 3.3 Te1 1.4 Te2 9.6 Te3 4.8 Te4 4.3 Te5 0.4 Te6 *** Te7 *** @0.15645, -0.003,+0.0015 no sawteeth to confuse absorption Te0 -3.7 Te1 -18.9 Te2 -12.4 Te3 -10.7 Te4 -1.5 Te5 -2.4 Te6 **** Te7 -0.9 next shot:gas setup - 5 msec @100 V starting .075 /w 15 V maintenance (400/594; -/-) 014 fizzle 015 fault! Summary: Before the TF bus short on 980224015, part of the run plan was accomplished. After initial tests, fiducial discharges were readily obtained which was a surprise and were of very good quality as fiducials go (980224006 - 130 kJ). One 8T H-mode was obtained on 980224009 (150 kJ) which is also good for Pabs analysis. Early heating during the current rampup was begun. The initial guess on He concentration was probably too high. Preliminary break-in-slope analysis indicates a fair amount of mode conversion electron heating off-axis (980224013). The plan was to lower the concentration and hopefully increase the ion heating. Further experiments are required to develop a this discharge type (early RF heating of ions with current and density ramp).

Physics Operator Summaries

Entered: Jul 7 2004 04:36:59:613PM

Author: To Be Determined

Physics operator summary for run 980224. MP 194 -- ICRF Reversed Shear Mode with He3 minority at 80 MHz SL: Wukitch/Porkolab PO: Granetz The goals for today are to: 1) Establish post-boronization fiducials (10 shots) 2) Investigate reverse shear discharge development with primarily an ion heater as opposed to electron heater as is the case for D(H). Good RF into nominal 500 kA/0.1 sec current ramp -- 1 MW early RF followed by a step to higher power (2.5-3 MW). establish breakdown at 8T vary the 3He concentration to find optimum puff to heat ions should be different from diverted plasma by factor of 3-4 10 msec puff w/ 10 V maintenance 10 msec puff w/ 20 V maintenance 10 msec puff w/ 35 V maintenance 5 msec puff w/ optimum maintenance 15 msec puff w/ optimum maintenance 20 msec puff w/ optimum maintenance 25 msec puff w/ optimum maintenance 35 msec puff w/ optimum maintenance maximize RF early RF power -- at least 1 MW early RF followed by a step to higher power (2.5-3 MW) increase current ramp rate 3) Inject Li pellet into 1 MW portion of discharge and step up the power in the second part >> extend PEP mode duration with reverse shear current profile (5-7 shots) probably will require multiple pellets timing of the RF and pellet will be varied Summary: We had four plasmas at 8 tesla, and then the run had to be stopped due to an arc in the TF bus. Getting fiducial plasmas after the boronization was not a problem today. Note that ECDC in deuterium was done overnight prior to the run. Scorecard: 8 plasmas 2 fizzles 1 dud 4 tests ---------- 15 total ------------------------------------------------------------------------------ Run Plan and Engineering Setup for Wednesday, 980224 (written by S. Wukitch) ECDC in deuterium overnight before the run. Two experiments will be run today. The first is the usual post-boronization breakdown experiments. The second is 8T ramp-up with early RF heating. The engineering setups are as follows: ------------ Engineering Setup ------------ 1. Post-boronization breakdown Make sure data trees are on. Recall setup from 980219004 (a standard 800 kA, nl_04~1.0x10^20, 5.4 T D(H) discharge) TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B-side-upper with 16 PSI of He3, hybrid disable Gate Valves: ECE others can be enabled upon request Once #1 is completed, begin the 8T experiment (which may run until 18:30). 2. 8T ramp up with early RF heating Need to establish breakdown at 8T start with 980219006 and would like a ramp rate and plasma parameters similar to 980211032 move the TF start time to -1.9 sec engineering start trigger needs to be moved back before -1.9 s engineering integrator needs to start before -1.9 s move invert to 0.7 sec (maybe to as early as 0.4 sec) raise PLC TF limit to 230 kA TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B-side-upper with 16 PSI of He3, hybrid enable Gate Valves: ECE LPI (lithium pellet injector) ------------------------------------------------------------------------------ Note: overnight ECDC in deuterium was done prior to today's run. Hybrid coldstart done; no errors found ($set default cmod$models:[hybrid.tcl] $@hybinit_dispatch $@show_bitbus_log Use editor search to verify no occurrences of "error" nor "not respond") Reload fiducial plasma shot 980219004 (0.8 MA, 5.3 T, 1.0e20 m-2) RF on for the initial fiducial shots. RF feedback on RCUR is turned off (RF_LOAD_E = 0.0) Shot 01 -- Test. TF scanner. Shot 02 -- Test. TF scanner is hung. Shot 03 -- Test. EF3 only, under PLC control. Shot 04 -- Test. Tuesday morning OH test. OH2U coax resistance=0.28 microohms OH2L=0.36 microohms. Next shot: 0.8 MA fiducial Shot 05 -- Plasma. Good shot. 0.8 MA fiducial. ELM-free and EDA H-modes. Normal low Prad. Next shot: repeat. Shot 06 -- Plasma. Good shot. 0.8 MA fiducial. Nice EDA H-mode. Good RF pulse. Low Prad. Wp=128 kJ. Next shot: repeat. Shot 07 -- Plasma. Good shot. 0.8 MA fiducial. Large moly (?) injections at t=0.58 and 0.88 s. Next shot:Load shot from 980211032 (previous ERS run), except switch density feedback to use nl_04 (instead of Z-meter) Program density for nl04=0.9e20 m-2. Program pulse gas 2 (He3) puff (30 ms at t=0.45, followed by 35 volt maintenance until t=0.7 s) Move TF start to -1.9 s. Move TF invert to 0.7 s. Start engineering digitisers at -2.0 s. Start plasma current rampdown at 0.7 s. Enable B-side upper (He3) Shot 08 -- Plasma. Good shot. 1.06 MA. Operator error: I forgot to change the TF programming, so the field was only 5.4 tesla. Plasma current starts ramping down at 0.7 s, but disrupts at 0.96 s. Next shot: raise TF programming to -222 kA, starting at -1.95 s (in both segments). Modify all wires in segment 2 to account for the shorter plasma flattop (RCUR, ZCUR, CLEARIN, RXL .....) Shot 09 -- Plasma. Good shot. 1.07 MA, 7.95 T. Plasma current reaches 0.4 MA at t=0.1 s. Target density is nl04=0.9e20 m-2. Sawteeth start at 0.36-0.37 s. RF starts at 0.47 s. Next shot: argon enabled for next shot. RF pulse will start at 0.1 s. Change He3 programming accordingly (10 ms pulse at 0.07 s, followed by 15 volt maintenance until end of flattop). Shot 10 -- Fizzle. Bz is very negative. Br is -1 mT. (same on previous shot as well). Next shot: raise IC_EF4 by 50 amps (-1340 to -1290 amps), raise BR offset from .0045 to .0055 T Shot 11 -- Plasma. Good shot. 1.05 MA, 7.96 T. Sawtoothing starts at 0.26 s. Current ramp rate was 527 kA/0.1 s. (early RF heating?) Next shot: repeat, more tuning on the RF Shot 12 -- Plasma. Disrupted at 0.48 s. Plasma became resistive just before the thermal quench. Brick? There was an overstress limit on EF2U, and a warning on the OH2L coax (1.32 microohm). Next shot: no PCS changes. More adjustments made to the RF. Shot 13 -- Plasma. Disrupted at 0.86 s (during rampdown). Sawtoothing starts at 0.245 s. Several large natural impurity injections. Next shot: shorten main He3 pulse to 5 ms (from 10 ms). Keep maintenance level at 15 volts. Shot 14 -- Fizzle. Null looks okay. Last 4 shots have nearly identical breakdown fields and gas pressures. Thomson gate valve is not opening. Next shot: no changes Shot 15 -- Dud. TF faulted at t=-1.4 s with a 350 kA arc in the buswork somewhere. There was a loud bang. TF magnet resistance looks to be okay. At least one of the CLIP explosive fuses blew. End of run.

Session Leader Comments
Feb 24 1998 08:24:22:470AM		Steve Wukitch	MP#194 ICRF Reversed Shear Mode with 3He minority at 80 MHz SL: Wukitch/Porkolab PO: Granetz ECDC in deuterium overnight before the run. Two experiments will be run today. The first is the usual post-boronization breakdown experiments. The second is 8T ramp-up with early RF heating. The engineering setups are as follows: ------------ Engineering Setup ------------ 1. Post-boronization breakdown Make sure data trees are on. Recall setup from 980219004 (a standard 800 kA, nl_04~1.0x10^20, 5.4 T D(H) discharge) TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B-side-upper with 16 PSI of He3, hybrid disable Gate Valves: ECE others can be enabled upon request Once #1 is completed begin the 8T experiment which may run until 1830 hrs. 2. 8T ramp up with early RF heating Need to establish breakdown at 8T start with 980219006 and would like a ramp rate and plasma parameters similar to 980211032 move the start time to -1.9 sec engineering start trigger needs to be moved back move invert to 0.7 sec (maybe to as early as 0.4 sec) TF under hybrid control Gas setup - fill K-side with 30 PSI of D2, hybrid enable fill B-top with 6 PSI of D2, hybrid enable fill B-side-lower with 3 PSI of Ar, hybrid disable fill B
Feb 24 1998 08:28:34:750AM	980224001	Steve Wukitch	001 scanner test
Feb 24 1998 08:28:42:890AM	980224002	Steve Wukitch	002 scanner test
Feb 24 1998 08:31:48:490AM	980224003	Steve Wukitch	003 EF3 test under PLC control
Feb 24 1998 08:43:44:400AM	980224004	Steve Wukitch	004 OH test (Tuesday test) next shot: fiducial plasma attempt
Feb 24 1998 09:58:01:670AM	980224005	Steve Wukitch	005 plasma mix of EF and EDA 100 kJ series of injections phase balance faults on #2 no YAG data 15-20% increase in density with RF H/(H+D)~1.2-1.8% next shot: repeat enable moly monitor and VUV gate valves
Feb 24 1998 09:26:27:400AM	980224006	Steve Wukitch	006 plasma EDA 128 kJ density increase with RF is smaller (~5%) next shot: repeat (405/602;-/-)
Feb 24 1998 09:53:55:390AM	980224007	Steve Wukitch	007 plasma EDA 122 kJ density increase with RF is same as 006 large injections next shot: go to 8T; recall shot 980219006 to get tuning Ip->1.2 MA, nl_04~1x10^20 m^-2 try to breakdown at 8T which is new (418/589; 989/2443) gas setup: 30 msec @100 V starting .45 /w 35 V maintenance
Feb 24 1998 10:19:50:950AM	980224008	Steve Wukitch	008 not an 8T plasma misload on TF currents and other programming problems Ip->1 MA early disruption next shot: retry for 8T
Feb 24 1998 10:55:22:010AM	980224009	Steve Wukitch	009 plasma H-mode 150 kJ no ECE gate valve was closed good Pabs analysis shot sawteeth starts around 360-370 msec next shot: gas setup - 10 msec @100 V starting .07 /w 15 V maintenance
Feb 24 1998 11:31:44:210AM	980224010	Steve Wukitch	010 fizzle
Feb 24 1998 11:36:45:740AM	980224011	Steve Wukitch	011 plasma #1 screen overcurrent 1st sawtooth crash ~0.26 sec
Feb 24 1998 12:08:13:530PM	980224012	Steve Wukitch	012 plasma disrupt~0.48 sec markedly better heating after plasma goes diverted 1st sawtooth crash ~0.25 sec next shot: insert RF notch in early RF
Feb 24 1998 01:00:11:190PM	980224013	Steve Wukitch	013 plasma disrupt~0.8 sec ECE indicates off-axis absorption on electrons peaking around channel Te2 -- need to lower He concentration phase balance faults on #1 & #2
Feb 24 1998 01:00:59:770PM	980224014	Steve Wukitch	014 fizzle
Feb 24 1998 01:35:19:060PM	980224015	Steve Wukitch	015 fault! -- done for the day

Physics Operator Comments
Feb 24 1998 08:19:25:360AM		Robert Granetz	MP 194 -- ICRF Reversed Shear Mode with He3 minority at 80 MHz SL: Wukitch/Porkolab PO: Granetz The goals for today are to: 1) Establish post-boronization fiducials (10 shots) 2) Investigate reverse shear discharge development with primarily an ion heater as opposed to electron heater as is the case for D(H). Good RF into nominal 500 kA/0.1 sec current ramp -- 1 MW early RF followed by a step to higher power (2.5-3 MW). establish breakdown at 8T vary the 3He concentration to find optimum puff to heat ions should be different from diverted plasma by factor of 3-4 10 msec puff w/ 10 V maintenance 10 msec puff w/ 20 V maintenance 10 msec puff w/ 35 V maintenance 5 msec puff w/ optimum maintenance 15 msec puff w/ optimum maintenance 20 msec puff w/ optimum maintenance 25 msec puff w/ optimum maintenance 35 msec puff w/ optimum maintenance maximize RF early RF power -- at least 1 MW early RF followed by a step to higher power (2.5-3 MW) increase current ramp rate 3) Inject Li pellet into 1 MW portion of discharge and step up the power in the second part >> extend PEP mode duration with reverse shear current profile (5-7 shots) probably will require multiple pellets timing of the RF and pellet will be v
Feb 24 1998 08:32:56:050AM	980224001	Robert Granetz	Shot 01 -- Test. TF scanner.
Feb 24 1998 08:33:08:980AM	980224002	Robert Granetz	Shot 02 -- Test. TF scanner.
Feb 24 1998 08:33:22:970AM	980224003	Robert Granetz	Shot 03 -- Test. EF3 only, under PLC control.
Feb 24 1998 12:34:54:920PM	980224004	Robert Granetz	Shot 04 -- Test. Tuesday morning OH test. OH2U coax resistance=0.28 microohms, OH2L=0.36 microohms. Next shot: 0.8 MA fiducial
Feb 24 1998 09:05:11:630AM	980224005	Robert Granetz	Shot 05 -- Plasma. Good shot. 0.8 MA fiducial. ELM-free and EDA H-modes. Normal low Prad. Next shot: repeat.
Feb 24 1998 09:20:49:740AM	980224006	Robert Granetz	Shot 06 -- Plasma. Good shot. 0.8 MA fiducial. Nice EDA H-mode. Good RF pulse. Low Prad. Wp=128 kJ. Next shot: repeat.
Feb 24 1998 09:55:37:670AM	980224007	Robert Granetz	Shot 07 -- Plasma. Good shot. 0.8 MA fiducial. Large moly (?) injections at t=0.58 and 0.88 s. Next shot:Load shot from 980211032 (previous ERS run), except switch density feedback to use nl_04 (instead of Z-meter) Program pulse gas 2 (He3) puff (30 ms at t=0.45, followed by 35 volt maintenance until t=0.7 s) Move TF start to -1.9 s. Move TF invert to 0.7 s. Start engineering digitisers at -2.0 s. Start plasma current rampdown at 0.7 s. Enable B-side upper (He3)
Feb 24 1998 10:27:21:150AM	980224008	Robert Granetz	Shot 08 -- Plasma. Good shot. 1.06 MA. Operator error: I forgot to change the TF programming, so the field was only 5.4 tesla. Plasma current starts ramping down at 0.7 s, but disrupts at 0.96 s. Next shot: raise TF programming to -222 kA, starting at -1.95 s (in both segments). Modify all wires in segment 2 to account for the shorter plasma flattop (RCUR, ZCUR, CLEARIN, RXL .....)
Feb 24 1998 10:50:33:060AM	980224009	Robert Granetz	Shot 09 -- Plasma. Good shot. 1.07 MA, 7.95 T. Plasma current reaches 0.4 MA at t=0.1 s. Target density is nl04=0.9e20 m-2. Sawteeth start at 0.36-0.37 s. RF starts at 0.47 s. Next shot: argon enabled for next shot. RF pulse will start at 0.1 s. Change He3 programming accordingly (10 ms pulse at 0.07 s, followed by 15 volt maintenance until end of flattop).
Feb 24 1998 11:07:13:630AM	980224010	Robert Granetz	Shot 10 -- Fizzle. Bz is very negative. Br is -1 mT. (same on previous shot as well). Next shot: raise IC_EF4 by 50 amps (-1340 to -1290 amps), raise BR offset from .0045 to .0055 T
Feb 24 1998 11:41:50:340AM	980224011	Robert Granetz	Shot 11 -- Plasma. Good shot. 1.05 MA, 7.96 T. Sawtoothing starts at 0.26 s. Current ramp rate was 527 kA/0.1 s. (early RF heating?) Next shot: repeat, more tuning on the RF
Feb 24 1998 12:32:58:060PM	980224012	Robert Granetz	Shot 12 -- Plasma. Disrupted at 0.48 s. Plasma became resistive just before the thermal quench. Brick? There was an overstress limit on EF2U, and a warning on the OH2L coax (1.32 microohm). Next shot: no PCS changes. More adjustments made to the RF.
Feb 24 1998 12:30:43:050PM	980224013	Robert Granetz	Shot 13 -- Plasma. Disrupted at 0.86 s (during rampdown). Sawtoothing starts at 0.245 s. Several large natural impurity injections. Next shot: shorten main He3 pulse to 5 ms (from 10 ms). Keep maintenance level at 15 volts.
Feb 24 1998 12:56:57:280PM	980224014	Robert Granetz	Shot 14 -- Fizzle. Null looks okay. Last 4 shots have nearly identical breakdown fields and gas pressures. Thomson gate valve is not opening. Next shot: no changes
Feb 24 1998 01:51:37:580PM	980224015	Robert Granetz	Shot 15 -- Dud. TF faulted at t=-1.4 s with a 350 kA arc in the buswork somewhere. There was a loud bang. TF magnet resistance looks to be okay. At least one of the CLIP explosive fuses blew. End of run.

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	06:45:31:390AM	Test	Ok	TF scanner temp. test and calibration
2	07:14:10:590AM	Test	Ok	TF scanner test
3	08:30:33:850AM	Test	Ok	EF3 5KA?1000V test
4	08:40:46:440AM	Test	Ok	OH 1,2 test OK
5	08:56:48:210AM	Plasma	Ok	First plasma shot 09:00hrs no faults plasma
6	09:13:26:530AM	Plasma	Ok	no faults
7	09:26:33:710AM	Plasma	Ok	no faults/plasma
8	10:04:07:730AM	Plasma	Ok	no faults/plasma check TF for Hybrid program
9	10:29:41:170AM	Plasma	Ok	no faults/plasma/165KA
10	10:57:42:600AM	Plasma	Ok	no faults
11	11:20:44:590AM	Plasma	Ok	no faults/plasma
12	11:48:43:400AM	Plasma	Ok	TF 1 scr not conducting convertor #1
13	12:16:53:660PM	Plasma	Ok	no faults/plasma
14	12:44:31:650PM	Plasma	Ok	TF convertor #1 one scr not conducting
15	01:14:15:450PM	Plasma	Bad	tf fault