Thursday, April 13, 2017, 12:01

Pellets made this morning and weighed.

Placed in a graphite boat which is placed inside a previously TaC coated boat.

Boat is wrapped with 3x Ta heat shields.

Loaded into evap2.

Chamber currently pumping down.

 Tuesday, April 18, 2017, 13:53

HS water valves were opened this morning, no leaks detected.

Tapped up manually to 100A, 1.28V

Vacuum stable.

IGP1 = 3.63e-6 Torr.

Initiating auto ramp at a rate of 1.0A/min to 150A

Final desired temperature of 1100C

 Tuesday, April 18, 2017, 14:57

TGHT = 150A, 2.08V

Still no temperature reading on OMEGA.

Vacuum stable, IGP1 = 1.16e-6 Torr.

Initiating auto ramp at the same rate of 1.0A/min up to 200A.

 Tuesday, April 18, 2017, 15:56

TGHT = 200A, 2.91V

OMEGA = 990C

IGP1 = 8.59e-7 Torr

Tapping up manually to 1100C...

 Wednesday, April 19, 2017, 08:34

TGHT = 235A, 3.47V

OMEGA = 1090C

IGP1 = 1.6e-7 Torr.

Has remained at ~1100C since 16:30 yesterday.

Intitiating auto-cool at 2.0A/min

 Thursday, April 20, 2017, 08:40

Vented in air and taken out yesterday.

Pellets look good.

No obvious colour change.

Thursday, April 20, 2017, 12:38

3 samples are loaded into the Ta boat and wrapped with heat shield (1 long piece, 3 rounds):  2x of B3-92Mpa pellets and 10% pure PAN pellet as control.  See lab book page 32 for more details.

The B3-92Mpa pellets were previously heated to 1550C (TGHT 400A/6.94V), see elog#351

Attempting to heat samples up to 1800C to determine the weight loss and shrinkage. 

Est. TGHT 480A.

OK to auto ramp to 400A at 1A/min.  Check for coating on the window. 

Chamber is currently being pumped down.

 Thursday, April 20, 2017, 14:28

Pressure 3.14e-6 Torr.  Auto ramp TGHT at 1A/min to reach 400A. 

 Friday, April 21, 2017, 10:56

TGHT at 400A/6.75V, temp at 1475C (75C/0.19V lower). 

Tapping up TGHT

 Friday, April 21, 2017, 12:32

TGHT ramped up to 530A/9.85V, temp at 1800C. 

 Friday, April 21, 2017, 15:38

TGHT dropped slightly, no coating on windows. 

Checked with Mikron, agreed with the dropped temp. 

Tapped up TGHt to 545A/10.1V to reach 1800C.  Will keep at that temp for several days.

 Wednesday, April 26, 2017, 17:06

Samples have been heated at 1800C (-25C) for 7 days now (see attachment for archiver). 

Cooling down TGHT at 1A/min.

 Wednesday, May 10, 2017, 16:05

Loaded.

HS water valves opened, no leaks detected.

Started auto-ramp at a rate of 1A/30sec to a final setpoint of 580A

Laura Lambert wrote:

Wednesday, May 10, 2017, 16:05 Loaded. HS water valves opened, no leaks detected. Started auto-ramp at a rate of 1A/30sec to a final setpoint of 580A

 Wednesday, May 10, 2017, 21:31: TGHT at 580 A for 1 h. Vacuum came down to 1.4E-6 Torr. TGHT voltage stable. Ramping down.

Anders Mjos wrote:

Laura Lambert wrote:  Wednesday, May 10, 2017, 16:05 Loaded. HS water valves opened, no leaks detected. Started auto-ramp at a rate of 1A/30sec to a final setpoint of 580A    Wednesday, May 10, 2017, 21:31: TGHT at 580 A for 1 h. Vacuum came down to 1.4E-6 Torr. TGHT voltage stable. Ramping down.

 Thursday, May 11, 2017, 10:51

vented in air and opened it up this morning.

Heat shield looks good!

 Wednesday, June 14, 2017, 15:49

Pellets previously made by Marla and weighed.

Pellets are placed inside a small graphite sample tube.

Graphite sample tube loaded with pellets is loaded into a previously TaC coated boat.

Boat is wrapped with 3x Ta heat shields.

Loaded into evap2.

Chamber currently pumping down.

 Thursday, June 15, 2017, 11:24

HS water valves were opened this morning, no leaks detected.

Tapped up manually to 50A, 0.44V

Vacuum currently rising starting to settle.

IGP1 = 1.51e-6 Torr.

One vacuum stabilizes will initiate auto ramp at a rate of 1.0 A/min up to a final set point of 150 A.

Final desired temperature of 1800C.

Laura Lambert wrote:

Wednesday, June 14, 2017, 15:49 Pellets previously made by Marla and weighed. Pellets are placed inside a small graphite sample tube. Graphite sample tube loaded with pellets is loaded into a previously TaC coated boat. Boat is wrapped with 3x Ta heat shields. Loaded into evap2. Chamber currently pumping down.  Thursday, June 15, 2017, 11:24 HS water valves were opened this morning, no leaks detected. Tapped up manually to 50A, 0.44V Vacuum currently rising starting to settle. IGP1 = 1.51e-6 Torr. One vacuum stabilizes will initiate auto ramp at a rate of 1.0 A/min up to a final set point of 150 A. Final desired temperature of 1800C.

 Friday, June 16, 2017, 10:37

IGP1 = 7.91e-7 torr.

TGHT = 167 A, 2.3 V.

Tapped up manually to 350A yesterday, remained there overnight.

IGP1 = 4.55e-7 torr

TGHT=350 A, 5.6 V,

Changed slope to 0.98

Checked temperature readings with mikron to confirm slope

Mikron LS = 1260C, RS=1290C

OMEGA= 1295C

Initiating auto ramp at 1.0A/min to a final set point of 450A.

Final desired temperature of 1600C (no longer need to go to 1800C).

*note: graphite sample tube has graphite endcaps inserted

Marla Cervantes wrote:

Laura Lambert wrote:  Wednesday, June 14, 2017, 15:49 Pellets previously made by Marla and weighed. Pellets are placed inside a small graphite sample tube. Graphite sample tube loaded with pellets is loaded into a previously TaC coated boat. Boat is wrapped with 3x Ta heat shields. Loaded into evap2. Chamber currently pumping down.  Thursday, June 15, 2017, 11:24 HS water valves were opened this morning, no leaks detected. Tapped up manually to 50A, 0.44V Vacuum currently rising starting to settle. IGP1 = 1.51e-6 Torr. One vacuum stabilizes will initiate auto ramp at a rate of 1.0 A/min up to a final set point of 150 A. Final desired temperature of 1800C.    Friday, June 16, 2017, 10:37 IGP1 = 7.91e-7 torr. TGHT = 167 A, 2.3 V. Tapped up manually to 350A yesterday, remained there overnight. IGP1 = 4.55e-7 torr TGHT=350 A, 5.6 V, Changed slope to 0.98 Checked temperature readings with mikron to confirm slope Mikron LS = 1260C, RS=1290C OMEGA= 1295C Initiating auto ramp at 1.0A/min to a final set point of 450A. Final desired temperature of 1600C (no longer need to go to 1800C). *note: graphite sample tube has graphite endcaps inserted

 Friday, June 16, 2017, 15:10

Tapped up manually to 420A and auto ramp at 1.0A/min to 450A.

IGP1= 7.15e-7 torr

TGHT=450 A, 7.85 V

OMEGA = 1605C

Process completed, initiating auto cool at 1.0A/min

Elog entry by Pauline

 Monday, June 19, 2017, 16:18

Vented in air and removed from evap2 this a.m.

Weirdly TGHT had tripped off at 10pm on friday June 16th

TGHT = 58A when it tripped off.

Nothing else tripped.

Power supply was still on.

Water was still running

But, in the epics water control box it showed green boxes for TGHT, HS and CHILLER...but all said trip in yellow next to the boxes...odd...

Also noted, before removing from evap2, noticed both legs were bent and touching heat shield, will look further into this...

Monday, July 10, 2017, 17:28

Two np-SiC fibrous pellets with different applied pressure:

1) 200MPa, 2)  335 MPa (see logbook pg 36 for more details). 

Desired heating temperature: 1550C (Previous setting: TGHT 400A/6.94V)

Two layers of Ta foils wrapped around the target boat.

Chamber is pumping down...

 Tuesday, July 11, 2017, 11:11

Pressured came down to 1.0e-6 Torr. 

Tapping up TGHT.

 Tuesday, July 11, 2017, 11:24

Tapped TGHT up to 45A - pressure stabilized at around 3.0e-5 Torr. 

Auto ramp 1.0A/min to reach 350A before tapping up further.

 Wednesday, July 12, 2017, 10:59

TGHT reached to 350A/5.5V, temp @ 1270C - much lower than expected; could be a short between the target container and the heat shield.  I actually had a had time adjusting the target legs to avoid shorting the cu-heat shield. 

Tapped TGHT further up to 375A/6.07V, Omega Temp at 1340C.  Holding current for about 50 mins, re-measured with pyrometer - temperature matches.

Wednesday, July 12, 2017, 14:49 

TGHT set at 450A/7.7A.  Temp at ~1550C.  See attachment for temp plot

Holding at temp for 5 days before cooling down on Monday July 17.

 Thursday, July 13, 2017, 17:52

TGHT tripped off due to bad IEVAP2:WFB1 water flow.  Not sure what was the cause.  Will leave the heater off for now and investigate this tomorrow.

 Friday, July 14, 2017, 11:48

Investigated the bad water flow situation.  It was due to a faulty water flow sensor.  The paddle wheel stopped turning until I gave it a tab.  We had a similar problem before with the water sensor, see elog ID 109.  It is probably the time to replace all the water sensors. 

 Wednesday, July 19, 2017, 13:44

Discs previously casted by Marla and Pauline and weighed. 

Discs are placed inside a small graphite container.

Graphite container with discs loaded with 30 discs was loaded into Ta-boat previously coated with TaC.

Ta-boat is wrapped with 3 Ta heat shields.

Loaded in evaporator 2.

Chamber currently pumping down.

Thursday, July 20, 2017, 16:07

 HS water valves were opened in the morning, no leaks were detected.

Perform water test to confirm paddle wheels are working well.

Current was tapped manually to 40 A.

Read out on meter confirmed paddle wheels are registering 

Tap back down to 20 A, tripped off system on purpose by closing HS water valves.

TGHT tripped off as expected.

Water flow test was good, initiating ramp up of samples.

Taped manually to 40 A.

After the stabilization of the vacuum auto ramping was set up to 0.2 A/min.

Up to a final set up point of 250 A.

Final desired temperature ~1800 C.

 Friday, July 21, 2017, 10:20

Final set up from July 20 was reached.

Current reading: 244.6 A.

Voltage reading: 3.82 V.

Temperature reached: 1105 C.

Final set up was change to 1500 A.

The temperature reached at 6 pm was 1936 C so the current  was decreased  to 488 A.

The final temperature after 30 min was 1800 C.

The set up stayed the same for the weekend.

 Monday, July 24, 2017, 13:06

Temperature reading in the morning was 1856 C.

TGHT: 487.87 A, 9.07 V

TGHT power supply: 

IGP1: 3.75e-7 Torr

IGP2: 3.51e-7 Torr

Started to ramp down at 1 A/min rate.

Initiating auto cooling at 1.0A/min for TGHT.

 Tuesday, July 25, 2017, 09:27

LaC2/C discs were taken off of evap2.

LaC2/C discs were brought in to glove box.

Marla Cervantes wrote:

Monday, July 31, 2017,   Pellets previously pressed by Marla and Pauline.  Pellets are placed inside a small graphite container. Graphite container loaded with 5 pellets was loaded into Ta-boat previously coated with TaC. Ta-boat is wrapped with 3 Ta heat shields. Loaded in evaporator 2.  Tuesday, August 01, 2017, Chamber pumping down.  Wednesday, August 02, 2017, 16:03 HS water valves were opened, no leaks were detected. Current was tapped manually to 40 A. After the stabilization of the vacuum auto ramping was set up to 0.5 A/min. Up to a final set up point of 300 A. Final desired temperature ~1700 C.

 Friday, August 04, 2017, 10:20

evap2 tripped twice yesterday.

1st trip) there was a power bump which caused a trip at ~4:20pm, this can be seen in the striptool image attached.

-TGHT spiked to zero, but immediately went back to the ~420A it was sitting at at the time.

-This did not initiate a full trip of everything, but a visual spike in the system can be seen

-Oddly this was not picked up in archives - happened so fast and must have been in the small time frame it was not picking up information

-Did TGHT actually drop to zero followed by then applying an immediate 420A?

-Or did it simple not register a reading due to power bump?

2nd trip) IGP1 stopped communicating at ~5:45pm, this can be seen in both the archives, striptool and evap2 control screenshot images attached

-IGP1 was fine, vacuum was good

-Registering good vacuum in epics - can see in screen shot vacuum was still good but IGP1 turned yellow as if turned off

-This resulted in TP followed by BV tripping off due to no longer getting a vacuum reading making the TP think there was a bad vacuum.

-Possible miscommunication with PLC?

-This is the same scenario that happened on mon - see elog i.d. 381

Will follow up when more information acquired...

Laura Lambert wrote:

Marla Cervantes wrote:  Monday, July 31, 2017,   Pellets previously pressed by Marla and Pauline.  Pellets are placed inside a small graphite container. Graphite container loaded with 5 pellets was loaded into Ta-boat previously coated with TaC. Ta-boat is wrapped with 3 Ta heat shields. Loaded in evaporator 2.  Tuesday, August 01, 2017, Chamber pumping down.  Wednesday, August 02, 2017, 16:03 HS water valves were opened, no leaks were detected. Current was tapped manually to 40 A. After the stabilization of the vacuum auto ramping was set up to 0.5 A/min. Up to a final set up point of 300 A. Final desired temperature ~1700 C.    Friday, August 04, 2017, 10:20 evap2 tripped twice yesterday. 1st trip) there was a power bump which caused a trip at ~4:20pm, this can be seen in the striptool image attached. -TGHT spiked to zero, but immediately went back to the ~420A it was sitting at at the time. -This did not initiate a full trip of everything, but a visual spike in the system can be seen -Oddly this was not picked up in archives - happened so fast and must have been in the small time frame it was not picking up information -Did TGHT actually drop to zero followed by then applying an immediate 420A? -Or did it simple not register a reading due to power bump? 2nd trip) IGP1 stopped communicating at ~5:45pm, this can be seen in both the archives, striptool and evap2 control screenshot images attached -IGP1 was fine, vacuum was good -Registering good vacuum in epics - can see in screen shot vacuum was still good but IGP1 turned yellow as if turned off -This resulted in TP followed by BV tripping off due to no longer getting a vacuum reading making the TP think there was a bad vacuum. -Possible miscommunication with PLC? -This is the same scenario that happened on mon - see elog i.d. 381 Will follow up when more information acquired...

 Friday, August 04, 2017, 14:05

Vented in air and transferred to glove box today.

Container did not break.

Some wires in PLC were not creating a good contact - could be problem re: IGP1 tripping off.

Wires replaced by Gelo.

Put back under vacuum with nothing loaded over weekend to see how things run...

Monday, August 21, 2017, 17:09

Two pellets of sol-gel SiO2+CNT were produced.  See lab book pg 44-46 for details. 

Samples were loaded in Ta boat, wrapped with heat shield (1 layer)

Synthesis temperature = 1600C.  TGHT ~ 460A/8.0V

Vacuum at 7.5 e-6 Torr.

TGHt Auto-ramp at 01A/min to reach 350A. 

 Thursday, August 24, 2017, 00:28

TGHT reached to 350A/5.9V, temp @ 1230C (in-line with the last measurement see elog 378).

Increase TGHT to 430, ramp at 0.1A/min.

 Thursday, August 24, 2017, 23:42

TGHT reached to 430A/7.87V, temp at 1410C. Outgassing pressure reached to peak at 430A before TGHT stabilized.  (Evolution of SiO(g)???)

Ramp up to 460A at 0.1A/min.

 Friday, August 25, 2017, 10:30

TGHT reached to 460A/8.6V, temp at 1520C.  More outgassing was observed as temp was increased.

Tapping up TGHT to reach 1600c.

Friday, August 25, 2017, 15:17

Temp reached to 1600C; TGHT at 492 A/9.3 V.  Temperature was held for 3 hours.  Due to a problem with the backing pump, the cooling down process was initiated. 

Sample will be taken out next Monday for evaluation.

Wednesday, September 27, 2017, 18:05

 3 samples from NS-npSiC pellets, pressured at 10T  (see lab book pg 53)

3 samples from B3 pellets, 600MPa (see lab book pg 50)

Desired temperature = 1550C, est current = 450A

 Thursday, September 28, 2017, 11:17

Vac at 8.8e-7 Torr.  

Ramping TGHT up to 450A at 0.2A/min

 Thursday, September 28, 2017, 17:54

Setup screen capture, see pg 53 for saved directory

 Friday, September 29, 2017, 23:54

TGHT reached to 450A/7.9V, temp at 1510C.

Tapping up TGHT to 465/8.2V to reach 1550C

Pressure coming down from 1.6e-6 Torr.

See attachment 1 for the 20-hour plot

 Sunday, October 01, 2017, 00:30

At around 20:00 on Sep 30, there was an increase of ~0.1 V which caused a rise in temp from 1550 to 1576C (see screen capture).  Pressure increased slightly.

Tapped down TGHT to 445A/8.05V; temp maintained at 1550C.

 Monday, October 02, 2017, 17:55

Cooling TGHT from 445A/8.07V, 1500oC to room temperature at 1A/min

 Tuesday, October 03, 2017, 11:09

Target has been cooled for over 10 hours. 

Venting chamber

Wednesday, October 04, 2017, 16:37

3 samples of npSiC/PAN cast-pellets, see lab book p. 57 for details.

Desired temperature 1550C, expected TGHT ~450A.

Chamber pumped down.

TGHT ramping at 0.2A/min

 Friday, October 06, 2017, 10:45

TGHt at 450A/7.7A, temp at 1510C.  (p.s voltage is lower than before, elog 389).

Tapped up to 466A/8.08v, temp reached to 1550C.  A slight increase in pressure when tapping up TGHT. (see attached screen capture)

Will maintain heating temperature for several days before cooling down

 Tuesday, October 10, 2017, 10:50

Samples was heated for several days at 1550C. 

Cooling down initiated at 2A/min.

 Tuesday, October 10, 2017, 18:07

Chamber is vented.

Process done

Monday, November 06, 2017, 18:21

Samples of Horn and Probe - npSiC. see pg 74.

6 samples in total, to be heated to 1550C, about 450A.  Set ramping rate at 0.2A/min.  

Chamber pumping down

 Tuesday, November 07, 2017, 15:01

TGHT reached to 450A/8.2V, temperature measured at 1460C.  See attachment 1.

Increased ramping to 480A, targeting 1550C.

 Tuesday, November 07, 2017, 22:26

Samples have been heating at 1550C with TGHT at 480A/8.78V for about 8 hours.

Vacuum stabilizes at 8.4e-7 Torr.

Initial cooling at 2A/min.

 Wednesday, November 08, 2017, 10:36

Venting chamber.

 Tuesday, November 21, 2017, 12:01

Boat coated with TaC using 'flushing technique' and let dry overnight.

Wrapped with 1 long Ta heat shield 3x

Loaded into evap2 just before lunch

IGP1 = 7.1e-6 Torr

OMEGA slope = 0.98

Good vac at 3.0e-4, bad vac at 8.0e-4 Torr.

HS water valves have remained open since the last time evap2 was used.

No leak check done.

Tapped up manually to 35A.

Waited ~25min

Vacuum stable.

IGP1 = 1.15e-5 Torr

IGP2 = 1.17e-5 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 300A

Once max setpoints achieved, will tap up manually to final desired temperature of 1900C

 Wednesday, November 22, 2017, 09:32

TGHT = 270A, 4.15V

OMEGA = 1285C

IGP1 = 1.23e-6 Torr

IGP2 = 1.13e-6 Torr

Vacuum stable.

Increasing ramping rate to 1.0A/min and final setpoint to 350A

 Wednesday, November 22, 2017, 10:25

TGHT = 325A, 5.15V

OMEGA = 1500C

IGP1 = 2.80e-6 Torr

IGP2 = 2.93e-6 Torr

Vacuum stable.

Increasing ramping rate to 1.5A/min and final setpoint to 400A

 Wednesday, November 22, 2017, 10:49

TGHT = 350A, 5.60V

OMEGA = 1580C

IGP1 = 4.5e-6 Torr

IGP2 = 4.9e-6 Torr

Vacuum stable.

Increasing ramping rate to 2.0A/min

 Wednesday, November 22, 2017, 11:18

TGHT = 400A, 6.64V

OMEGA = 1734C

IGP1 = 5.8e-6 Torr

IGP2 = 6.2e-6 Torr

Vacuum stable.

Increasing final setpoint to 450A.

 Wednesday, November 22, 2017, 15:59

TGHT = 460A, 8.07V

OMEGA = 1898C

IGP1 = 1.34e-6 Torr

IGP2 = 1.27e-6 Torr

Sintering process complete.

Remained at max setpoints for just over 4hrs.

Initiating auto-cool at 2.0A/min.

 Thursday, November 23, 2017, 13:09

Removed from evap2 this morning.

Coating looks good.

 Thursday, November 23, 2017, 14:54

Graphite insert loaded into previously TaC coated target boat.

One endcap removed to allow for outgassing: left side out, right side in.

Weight of graphite tube + single endcap = 10.2012g

Same Ta heats shields remain on container from sintering TaC coating.

Currently pumping down in evap2.

Friday, November 24, 2017, 11:31

IGP1 = 4.52e-7 Torr

IGP2 = 3.43e-7 Torr

OMEGA slope = 0.98

Good vac at 3.0e-4, bad vac at 8.0e-4 Torr.

HS water valves have remained open since the last time evap2 was used.

No leak check done.

Tapped up manually to 50A.

Vacuum stable.

IGP1 = 5.34e-7 Torr

IGP2 = 5.54e-7 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 300A

Once max setpoints achieved, will tap up manually to final desired temperature of 2000C

Uranium targets go to a max temperature of 1950C online, so graphite insert should be tested to 2000C

 Monday, November 27, 2017, 10:15

IGP1 = 2.5e-7 Torr

IGP2 = 1.9e-7 Torr

Reached 300A, 4.61V

OMEGA = 1298C

Tapped up manually to 485A, 8.46V

OMEGA = 1808C

Remained at this setpoint for a day

Tuesday, November 28, 2017, 15:41 

IGP1 = 3.88e-7 Torr

IGP2 = 3.58e-7 Torr

Tapping up to 2000C...

Tuesday, November 28, 2017, 16:10 

TGHT = 570A, 10.20V

OMEGA = 2005C

IGP1 = 9.64e-7 Torr

IGP2 = 1.05e-6 Torr

There was a minor drop in voltage at 540A, 9.58V - dropped to ~9.4V then slowly went back up to 9.58V [see photo]

Will remain at this setpoint overnight and cool down in the a.m.

 Wednesday, November 29, 2017, 08:48

Voltage increased slowly while sitting at max setpoint of 570A [see photo]

TGHT = 570A, 11.20V --> voltage increased by 1.0V over ~16.5hrs

OMEGA = 2114C

IGP1 = 6.6e-7 Torr

IGP2 = 6.5e-7 Torr

Initiating auto-cool at 2.0A/min

 Wednesday, November 29, 2017, 16:15

Vented in air and removed today.

Will update tomorrow with results and photos.

 Thursday, December 07, 2017, 09:57

Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat.

There are also 4 coated springs, 2 on each side of the stack of endcaps.

The boat is wrapped with 3-layers of Ta heatshields.

Chamber pumped down overnight.

OMEGA slope = 0.98

HS water valves opened, no leaks detected.

IGP1 = 5.9e-7 Torr

IGP2 = 4.0e-7 Torr

Tapping up manually.

Final desired temperature = 1800C

Laura Lambert wrote:

Thursday, December 07, 2017, 09:57 Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat. There are also 4 coated springs, 2 on each side of the stack of endcaps. The boat is wrapped with 3-layers of Ta heatshields. Chamber pumped down overnight. OMEGA slope = 0.98 HS water valves opened, no leaks detected. IGP1 = 5.9e-7 Torr IGP2 = 4.0e-7 Torr Tapping up manually. Final desired temperature = 1800C

 Thursday, December 07, 2017, 11:51

TGHT tripped off.

Turns out the vacuum limits have not been fully updated when they should have been and the old ones still apply.

IGP1 reached 8e-5 Torr which tripped off the system.

TGHT = 80A, 1.05V when the system tripped.