2021-03-30 7:48 Target loaded with parasitic target only. No container. Leaving under vacuum over night.

 2021-03-31 13:43 Leak check performed. Water on. Need to vent system, electric connection disconnected.

 2021-03-31 15:02 First test successfully finished. Venting to introduce container with radiating heating gun.

 2021-04-01 14:58 Vacuum 3.5E-7 torr. Leak check done. Ramping up target heater to 100A at 1A/10s

 2021-04-01 14:58 Vacuum 5E-7, 100A all ok. Temp foil 24.3DegC. ramping to 500A at 1A/10s.

 2021-04-01 14:58 Temp of foil not increasing much. Probably issue with TC. ramping down at 1A/10s to vent and inspect.

 2021-04-02 11:03 Target reinstalled, foil TC reinstalled. Vacuum 3E-7 torr. Leak check done. Ramping up container to 500A 1A/10s. 

 2021-04-02 13:07 Still isues with TC. Container ramped down at 1A/10s. Venting, brought heat gun to check TC.

 2021-04-02 15:10 TC connection fixed, origin of issues. Vacuum down to 3E-5 torr. Ramping up container to 200A 1A/10s.

 2021-04-02 18:32 TGTH 200A Tc temp 327.5degC. ramping up to 300A. 1A/10s.

 2021-04-02 18:32 TGTH 300A Tc temp 500degC. ramping up to 400A. 1A/10s.

 2021-04-02 19:17 TGTH 400A Tc temp 618degC. ramping down.

 2021-04-03 13:37 Foil was changed, ramped up to 200A at 1A/10s, Temp TC 360degC. Ramping to 300A. Vac 8.6E-6 torr.

 2021-04-03 13:59 300A Temp TC 580degC. Ramping to 500A, 1A/10s. Vac 7.6E-6 torr.

 2021-04-03 14:36 500A Temp TC 836degC. Ramping to 600A, 1A/10s. Vac 9E-6 torr.

 2021-04-03 14:36 600A Temp TC 960degC. Vac 1.1E-5 torr. Ramping down. 

2021-04-03 19:00 After venting an opening the evap2, it was found that remaining from a past heat treatment where on the Tantalum container. The sublimation of the material coated the inner walls of the evap.2. Now cleaned.

 2021-04-04 16:07 New container is in with heatshields, vacuum 8.6E-6 torr. leak check done. ramping up current, checking both pyrometer and TC, 1A/10s.

 2021-04-04 16:49 200A TGHT 250degC on TC 1130degC on pyrometer. Too low on TC, ramping down and venting to reposition TC in the foil. 

 2021-04-04 18:00 TC was slightly broken, repaired now. Pumping chamber.

 2021-04-04 18:41 ramping up to 200A 1A/10s.

2021-04-04 18:41 200A TGHT, TC 389degC pyro 1130degC. ramping to 400A 1A/10s.

2021-04-04 18:41 300A TGHT, TC 554degC pyro 1440degC. 

2021-04-04 18:41 400A TGHT, TC 735degC pyro 1720degC. ramping to 600A 1A/10s. 

2021-04-04 20:15 500A TGHT, TC 891degC pyro 1990degC

2021-04-04 20:15 553A TGHT, TC 975degC pyro 2129degC, ramping down.

2021-04-06 13:44 Parasitic target plus thermocouples were introduced in evap2 the day before and put under vacuum. IG1 3E-7 torr, leak check done. Putting some power into HE while ramping up container to 100A 1a/10s.

2021-04-06 14:06 20W on HE 100A on target container. Everything stable. Ramping up to 200A 1A/10s 

2021-04-06 14:06 20W on HE 200A on target container. Everything stable. Ramping up to 300A 1A/10s 

2021-04-06 14:06 20W on HE 300A on target container. Everything stable 4.6E-7 torr. Ramping up HE to 40W.

2021-04-06 14:06 40W on HE 300A on target container. Everything stable 4.6E-7 torr. Ramping up container to 400A 1A/10s.

2021-04-06 14:06 40W on HE 400A on target container. Everything stable 1E-6 torr. Ramping up container to 500A 1A/10s.

2021-04-06 15:52 35W on HE 500A on target container. Everything stable 1.6E-6 torr. Ramping up He to 65W.

2021-04-06 18:40 at 50W on HE one of them broke, system ramped down, vented, HE replaced, pumping down system again.

2021-04-07 10:38 HE at 70W, ramping up container to 200A 1A/10s. Vacuum 3.3E-7 torr.

2021-04-07 10:59 HE at 70W, 200A on container, ramping up container to 300A 1A/10s. Vacuum 3.9E-7 torr.

2021-04-07 10:59 HE at 65W, 300A on container, ramping up container to 400A 1A/10s. Vacuum 4.5E-7 torr.

2021-04-07 11:50 HE at 70W, 400A on container, ramping up container to 500A 1A/10s. Vacuum 7.8E-7 torr.

2021-04-07 11:50 HE at 65W, 500A on container, ramping up container to 553A 1A/10s. Vacuum 1.4E-6 torr.

2021-04-07 11:50 HE at 65W, 553A on container. All good, ramping down. 1A,10s.

 Tuesday, April 13, 2021, 09:51

IGP1 = 2.5e-7 Torr

Tuesday, April 13, 2021, 10:17 

The wire was heated in the same manner as the last three runs

From 0A to 7A the autoramp was set to 0.5A/min

At 8A the wire started the glow dimmly 

Above 8A, the wire was heated manually at 0.5A until 15A where the step was changed to 1A, 

the temperature was measured with the filament pyrometer every 2 A starting at 10A

At 42 A the step was changed to 0.5A until 44.5A, 4.61V (2120 °C), the wire was kept at that temperature for 6 hours.

After that time, the current was ramped to 0A at 0.5A/min.

 2021-07-21 4:44pm Vacumm at 1e-5Torr. Water cooling leak check ok.

 2021-07-21 4:54pm ramping up TGHT to 200A 1A/10s.

2021-07-21 5:31pm 200A TGHT, TC 94degC pyro 1100degC. TC very low, ramping down and venting.

2021-07-22 5:00pm Parasitic prototype target installed, Vacuum 3e-5T, leak check ok. Power on HE of parasitic target.

2021-07-22 5:14pm vacuum 2e-5T. Ramping up container to 100A , 1A/10s.

2021-07-22 5:33pm vacuum 1e-5T. All good at 100A. Ramping up container to 200A , 1A/10s.

2021-07-22 5:54pm vacuum 8.2e-6T. All good at 200A pyro at 1100degC. Ramping up container to 300A , 1A/10s.

2021-07-22 6:15pm vacuum 7.6e-6T. All good at 300A pyro at 1420degC. Ramping up container to 400A , 1A/10s.

2021-07-22 6:36pm vacuum 8e-6T. All good at 400A pyro at 1700degC. Ramping up container to 500A , 1A/10s.

2021-07-22 6:57pm vacuum 1e-5T. All good at 500A pyro at 1960degC. Ramping up container to 553A , 1A/10s.

2021-07-22 7:13pm vacuum 1e-5T. All good at 553A pyro at 2100degC.

2021-07-22 7:36pm Ramping down 1A/10s.

2021-07-23 10:00am Venting.

 Monday, November 01, 2021, 07:37

Ta tube was coated with TaC and wrapped with Ta heat-shields (3 layers)

Note* on the leading end of the assembly I placed tantalum foil heatshield similar to what I previously observed there.  I believe it may impact temperature at the entrance of the container tube. 

Desired temperature = 1800 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).

Evap 2 was pumped down over the weekend

Good vacuum = 3.00 e-03Torr

Bad vacuum = 5.00 e-02 Torr

Monday, November 01, 2021, 07:39

Starting autoramp at 1 A/min to 40 A on both TGHT and TBHT 

IGP1= 3.5 e-07 Torr

Monday, November 01, 2021, 09:08

 IGP1= 1.6 e-06 Torr

TGHT = 40A, 0.99 V

TBHT = 39A, 1,2 V

Start autoramp @ 1A/min for both TGHT and TBHT to 400A and 230A respectively.

Monday, November 01, 2021, 14:33

OMEGA= 1545 C

TGHT =  354 A, 6.0 V

TBHT = 233 A, 4.8 V

IGP1= 1.7 e-05 Torr

increase ramp rate to 2A/min

Monday, November 01, 2021, 14:44 

OMEGA= 1585C

TGHT =  367A, 6.3 V

TBHT = 233 A, 4.8 V

IGP1= 1.7 e-05 Torr

Monday, November 01, 2021, 14:49

OMEGA= 1604 C

TGHT =  377A, 6.5V

TBHT = 233 A, 4.8 V

IGP1= 2.1 e-05 Torr 

Monday, November 01, 2021, 14:53 

OMEGA= 1624C

TGHT =  384 A, 6.6V

TBHT = 233 A, 4.8 V

Monday, November 01, 2021, 15:00

OMEGA= 1660C

TGHT =  400 A, 6.8V

TBHT = 233 A, 4.8 V

IGP1= 2.4 e-05 Torr 

Monday, November 01, 2021, 15:17

Initiate autoramp to 430A on TGHT @2A/min

Monday, November 01, 2021, 16:34 

 OMEGA = 1750 C

TGHT = 430 A, 7.3 V

Better heat insulation than before.  Next time need to place a Ta heatshield at the other end on the copper assembly.  Will raise T to 435 A and keep until 1930  hours.

Monday, November 01, 2021, 20:23

IGP1= 1.6 e-05 Torr

Omega = 1760 C

TGHT= 436 A, 7.4 V

TBHT = 232 A, 4.8 V

* Note: kept a approx 1 hour extra hoping that pressure would drop further

Started ramp down at -2A/min for TGHT and -1A/min for TBHT

Coating looks reasonably good.  

 Ta tube was coated with TaC and wrapped with Ta heat-shields (3 layers)

Note:  placed tantalum foil heatshield on both sides of the copper heatshield assembly.

Desired temperature = 1800 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).

Evap 2 was pumped down yesterday

Good vacuum = 3.00 e-03Torr

Bad vacuum = 5.00 e-02 Torr

Wednesday, November 03, 2021, 09:27

Start autoramp at 1A/min to 40A on both TGHT and TBHT

IGP1 initial:  5.3 e-07 Torr

Wednesday, November 03, 2021, 10:22

IGP1= 1.1 e-05 Torr

TGHT = 40 A, 0.5 V 

TBHT= 38.5 A, 0.41 V

Will keep while monitoring pressure at 0.5 A/min to 60A

Wednesday, November 03, 2021, 10:35

IGP1 pressure trending down

IGP1= 6.7 e-06 Torr 

Start ramp up to 60A at 0.5A/min

Wednesday, November 03, 2021, 11:24

IGP1 2.6 e-06 Torr and trending down

Start ramp up to 400A on TGHT and 230A on TBHT at 1A/min

Wednesday, November 03, 2021, 13:28 

 IGP1= 1.4e-05 Torr and trending down slowly.  Will increase ramp speed to 1.5A/min on both TGHT and TBHT to the same final current as before.

Wednesday, November 03, 2021, 15:56 

 IGP1= 2.1 e-05 Torr

TGHT = 400 A,  6.9 V

TBHT = 233 A, 4.1 V

 OMEGA = 1645 C

Will manually ramp up to 1800 C

Wednesday, November 03, 2021, 16:43 

 TGHT = 450 A, 7.9 V

TBHT = 233 A, 4.1 V

OMEGA = 1770 C

IGP1 increasing in Pressure.  Will leave for 4 hours at this current.

Wednesday, November 03, 2021, 20:48

IGP1= 1.0 e-05 Torr

TBHT= 233A, 4.1 V

TGHT = 450 A, 7.9 V

OMEGA = 1751 C

Starting ramp down at -2A/min on TGHT and -1A/min on TBHT

 Thursday, April 14, 2022, 10:36 Setup, PEEK samples installed on heatshield with TC. Pump down over the weekend.

Sunday, April 17, 2022, 10:37 Vacuum 3e-7T, ramp up TGHT 1A/10s to 500A 

Sunday, April 17, 2022, 12:00 500A reached, waiting 1hour. TC at 42degC. 

Sunday, April 17, 2022, 12:57 after 1h, TC at 45degC. Ramping down 1A/10s. Vacuum 2.7e-6Torr.

Sunday, April 17, 2022, 14:33 ramped down to 0A. Turning off turbo and venting. 

Setup in vacuum over the weekend.

Monday, April 25, 2022, 08:31 IGP1:6.7e-7T . Ramping up 1A/10s to 500A. 

Monday, April 25, 2022, 10:05 500A reached, waiting 1h. TC at 50degC

Monday, April 25, 2022, 10:59 TC at 58degC. Ramping down 1A/10s to 0 A. 

Monday, April 25, 2022, 13:37 TGHT at 0A , venting system. 

Monday, June 20, 2022, 14:50

A new Turbo pump was installed this morning and it was soft started.  It has operated correctly and it is ready for use.  Derek O.  installed it.

Previous pump had issues at start-up and was diagnosed as finished by Edi/

Tuesday, June 27, 2022, early afternoon: We assembled the setup in evap2 and started the pumps leaving it running over night.

Tuesday, June 28, 2022, 09:31 Turbo pump stopped for unknown reasons a few hours after we left. Restarting the pump.

Tuesday, June 28, 2022, 10:23 Vacuum down to 1e-5T start to ramp up TGHT 1A/10s to 200A.

Tuesday, June 28, 2022, 1:20 pm, Ramped from 0-500A. thermocouple reading 900C while pyrometer reads 1600C. begin ramping down to 0A.

 11am: Setting up new target tube thermocouple test

Thursday, August 04, 2022, 09:31 Test finished August 3rd afternoon. Venting now.  

1st test polarity 1

10:12 am Begin pumping down to rough vacuum
12:50 pm begin ramping up towards 2000C. Ta tube only, welded thermocouple mount
3:08 Ta tube reached 2000C, began ramping down. The ramping up process was smooth and no hiccups happened
4:57 ramp down complete, began shutting down the evap2, will let the turbopump to slow down spin overnight.

2nd test polarity 2(swapped)

Tuesday, Aug 09 2022, 4pm begin pumping to vacuum after switching the polarity of the power supply

Wednesday, August 10, 2022, 13:09 begin ramping up

3:18 ramped to 671A. 2000C, no hiccups, everything is nominal. The thermocouple reads higher than before, about 20-30 deg C colder than pyro at high temperatures (1400C and above)

No bad connections, short circuits or unexpected overheating.

begin ramping down

ramping down was smooth, with error being the TC about 40 deg C colder than pyro at temp above 1500C

ramping done completed at Wednesday, August 10, 2022, 16:46 , shutting down evap 2 roughing and turbopump

Monday, November 06, 2023, 09:59

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =3.1 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

 Monday, November 06, 2023, 14:07

OMEGA =1852 C

IGP1= 3.14e-06 Torr

TGHT= 399A, 6.6V

TBHT= 233A, 4.1V

Tuesday, November 07, 2023, 12:28

Cooled down previous evening and took out today.

rampdown was @-2A/min for TGHT and -1A/min TBHT

Thursday, January 30, 2025, 09:17

Left to pump down on previous night

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =8.1 e-06 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~500A (adjustable)

Heating autoramp starged at 0.5A/min(1A/120s) to 60A on both TGHT and TBHT

Then at 0.5A/min  to 90 A, both TGHT and 230A TBHT

When pressure stable will ramp at 2A/min to ~500A on TGHT and 230A on TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Thursday, January 30, 2025, 09:20

currently ramping to 90A

Thursday, January 30, 2025, 12:30

Ramping to 120A @ 0.5 A/min

Thursday, January 30, 2025, 13:59

Ramping to 140 A at 1A/min (to check pressure change.  So far with slower heating, pressure has not spiked very high).

Thursday, January 30, 2025, 15:59

Started ramping @ 2A/30s to 500 A on TGHT

TBHT is at 230A

Thursday, January 30, 2025, 21:25

Target was sintered when OMEGA reading 1700-1750 C

At 640-660A on TGHT RD

Check target coating and repeat these setting if good.

Thursday, January 30, 2025, 21:43

Cooling started at -2A/min on TGHT and -1A/min TBHT

Saturday, February 01, 2025, 09:23

The coated container was wrapped in 4 Ta foil heatshield and left in evap2 over night to attain vacuum.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~650A (adjustable)

Heating autoramp starged at 1A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1=5.6e-07Torr

Saturday, February 01, 2025, 11:05

@ 194A, 2.5V on TGHT, the pressure is dropping (has been dropping since 150A).  starting ramp at 4a/min

Thursday, February 13, 2025, 11:40

Log entries lost as computer rebooted.  Max temperature on OMEGA was 1850 C and held for 4 hours.  Cooled @ -2A/min TGHT and -1A/min TBHT.

Monday, March 03, 2025, 17:56

LP FEBIAD WO# 45447-21 initial wt=471.0 g (without T bar)

wrapped in 4 Ta heatshields.

Will heat at 2A/min to 95A on TGHT and TBHT

Then will heat at 2A/min to 1800 C ~400A on TGHT and 230A on TBHT

 Monday, March 03, 2025, 18:01

IGP1=3.3e-06 Torr

started initial ramp to 95A

Monday, March 03, 2025, 21:52

Start 4 hour count at 940 pm 

OMEGA reading 1750 C

TGHT= 435 A set and RD = 426 A, 7.0V

TGHT = 230A

Tuesday, March 04, 2025, 01:42

Start rampdown

Monday, March 10, 2025, 09:50

The coated container was wrapped in 4 Ta foil heatshield and left in evap2  over weekend to decrease pressure.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~650A (adjustable)

Heating autoramp starged at 2A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1=

 Monday, March 10, 2025, 10:36

Initial IGP1= 8.5 e-06 torr

Starting ramp to 120A for both TGHT and TBHT

Monday, March 10, 2025, 16:57

RD TGHT =686A set to 700A, 10.8V

TBHT = 230A, 3.1V

OMEGA= 1710

Will leave for 4 hours

 Monday, March 10, 2025, 20:42

IGP1=7.9e-06 Torr

OMEGA= 1750 C

TGHT = 686 A, 10.8V

TBHT= 230A, 3.1 V

starting rampdown at -2A/min TGHT and -1A/min TBHT

Tuesday, March 18, 2025, 06:48

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =9.1 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged a 2A/min on  TGHT   and TBHT

 to =300 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Tuesday, March 18, 2025, 13:47

OMEGA read 1850C at 380A on TGHT.  The temperature dropped and current was raised to 390A, 6.5V on TGHT.

TBHT was kept at 230A, 3.2V

Temperature dropped to 1756 after 4 hours of sintering.  Will start rampdown at -2A/min for TGHT and -1A/min TBHT. 

Wednesday, March 19, 2025, 13:08

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =

Target temperature on OMEGA= 1800-1850 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Thursday, March 20, 2025, 06:10 

IGP1 initial = 6.1e-7 Torr

 start ramp at 2A/min

Thursday, March 20, 2025, 07:04

paused ramp to prevent pressure spike

Thursday, March 20, 2025, 10:16

OMEGA 1800 C @ TGHT = 402A, 6.8V

Will leave for 4 hours.

Thursday, March 20, 2025, 13:53

Starting rampdown at 2A/min TGHT and 1A/min TBHT

Tuesday, March 25, 2025, 15:25

The coated container as wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =e-07 Torr

Target temperature on OMEGA= 1800-1850 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Will be left overnight to pump down

Wednesday, March 26, 2025, 09:07

starting ramp up at 2A/min to 230A for both TGHT and TBHT

Wednesday, March 26, 2025, 12:48

1800 C at 400A TGHT, 6.9V TGHT

Leaving for 4 hours