 Tuesday, March 30, 2021, 19:49, Ferran Boix Pamies, Empty, 44139-7-SK , , Done, Parasitic target thermal tests 
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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.
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Sunday, April 04, 2021, 16:09, Ferran Boix Pamies, Empty, 41882-2, TARGET BOAT, Done, parasitic target commissioning
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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. |
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Tuesday, April 13, 2021, 10:44, Marla Cervantes, Empty, NA (Ta- tube Eagle Alloys), , Done, Re-coat 4
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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. |
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Thursday, April 15, 2021, 18:33, Marla Cervantes, Ta, 44139-6-SK, TARGET BOAT, Done, Carbon penetration on Ta
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Thursday, April 15, 2021, 18:24
Tantalum samples were loaded in a tantalum testing tube and installed in the EVAP2 to heat under vacuum for 3 days at 2000 degC (~500A, 4kW).
The temperature is measured with the Omega pyrometer (slope 0.98)
Some of the samples are in contact with graphite and enclosed with Ta caps, the other samples are not in contact with carbon.
The testing tube is wrapped with 3 Ta heat shields and is not TaC coated.
Thursday, April 15, 2021, 18:31
IGP1 = 4.5e-7 Torr
Good vacuum = 3e-2 Torr
Bad vacuum = 5e-2Torr
The TGHT will be ramped to 500A at 5A/min
Thursday, April 15, 2021, 20:00
Finished ramping
TGHT = 502 A, 8.22 V, Omega 2012 degC
Sunday, April 18, 2021, 20:38
After 3 days at ~2000 degC, TGHT was ramped at -2A/min to 0A |
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Wednesday, April 28, 2021, 11:57, Darwin Ortiz Rosales, SiC, 42218-7, HP-SIS, Done, sintering discs for SiC#41 (or back-up for #40)
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Wednesday, April 28, 2021, 11:54
Total number of foils: 449 (not including analysis discs)
Total length packed 16.7 cm
5 extra analysis discs and 2 dr. Blade discs
container has 3 Ta heat shields.
No endcaps inserted to facilitate out-gassing
One Ta disc inserted at front end
Initially to ramp TGHT and TBHT to 50A at0.5 A/min
Then heat manually to OMEGA ~1400 C , ramping TGHT manually and automatically to reach 530A A (Omega slope set = 0.990)
Then temperature = 1800C
TBHT will be set fixed at 230 A (max). TBHT heated manually and automatically to max.
Good vac at 3.00 e -5 Torr
Bad vac at 5.00 e-5 Torr
Thursday, April 29, 2021, 10:09
IGP1 = 6.5 e-07 Torr
Start heating at 0.5 A/min to 50 A on both TGHT and TBHT
Thursday, April 29, 2021, 21:45
IGP1= 7.7 e-06
TGHT = 50.3A , 0.59 V
TBHT = 49.4 A, 0.56 V
Pressure is taking a while to equilibrate. Will wait a bit more to continue heating
Thursday, April 29, 2021, 23:49
IGP1 = 7.2 e-06 Torr
will start ramping at 0.5 A/min to 100 A
Saturday, May 01, 2021, 20:09
Friday, April 30, 2021, 08:19
IGP1 pressure higher than bad vacuum. Stopped autoramp. Will allow vacuum to come back down and restart ramp.
Saturday, May 01, 2021, 09:04
Yesterday the system had tripped. All pumps had turned off and the pressure was found at 0.005 torr
vacuum was restarted.
Current IGP1= 6.5e-07 Torr
Restarting heaters.
Autoramp at 0.5A/min to 20A on both TGHT and TBHT
Saturday, May 01, 2021, 10:48
IGP1=5.9e-7 Torr
TGHT = 20.0 A, 0.24V
TBHT = 20A, 0.20V
Autoramp at 0.5A/min to 40A both TGHT and TBHT
Saturday, May 01, 2021, 13:26
TGHT = 40.0 A, 0.47 V
TBHT= 39A, 0.44V
IGP1= 5.5 e-07 Torr
Autoramp at 0.5A/min to 60 A on both TGHT and TBHT
Saturday, May 01, 2021, 20:09
TGHT = 60.0 A, 0.72V
TBHT = 59.4 A, 0.69V
IGP1= 4.4e-07 Torr
Autoramp at 0.5A/min to 100 A on both TGHT and TBHT
Sunday, May 02, 2021, 18:30
IGP1= 1.7 e-06 Torr
TGHT =100A, 1.3V
TBHT = 99.9A, 1.3V
Autoramp both heaters at 0.25A/min to 120A and monitor
Sunday, May 02, 2021, 18:45
pressure increase to 4.1e-06 Torr. TBHT unexpectedly rose to 120A and was manually tapped back down to 104 A. Will keep both , TGHT and TBHT, at 104 A for a while.
Sunday, May 02, 2021, 19:50
Stepping at 0.5A/min to 105A then to 110 A on both TGHT and TBHT
Sunday, May 02, 2021, 22:10
Will leave both TGHT and TBHT at 110 A until pressure comes back down
currently IGP1= 1.3e-05 Torr
Monday, May 03, 2021, 09:35
IGP1= 2.2 e-06 Torr
Tapping TGHT and TBHT to 115A
Monday, May 03, 2021, 11:30
Tapping TGHT and TBHT to 120A @ 1A/min
Monday, May 03, 2021, 18:38
IGP1= 5.4e-06 Torr
TGHT = 130.3 A, 1.8 V
TBHT = 129.1 A, 1.8 V
Continue gradual ramping at 1A/min in increments of 5 A
Tuesday, May 04, 2021, 09:27
IGP1= 3.2e-5 Torr
TGHT = 400 A, 6.0V
TBHT = 232 A, 3.6V
OMEGA = 1104 C
waiting for pressure to drop then will continue heating
Tuesday, May 04, 2021, 17:27
TGHT = 420.1 A, 6.5V
TBHT= 232A, 3.6V
OMEGA = 1139 C
IGP1= 1.15e-5 Torr
will increase ramp up at 0.5A/min to 430A and hold (TGHT)
Tuesday, May 04, 2021, 22:43
TGHT= 430A, 6.6V
TBHT = 232.8A, 3.6V
OMEGA= 1157 C
IGP1=6.6e-6 Torr
Set Autoramp at 0.5A/min to 540 A (TGHT)
Wednesday, May 05, 2021, 08:09
IGP1= 7.5e-06 Torr
TGHT = 534 A, 8.5V
TBHT=232 A, 3.7 V
OMEGA = 1485
Continue ramp at 0.5A/min to to 600 A on TGHT
Wednesday, May 05, 2021, 15:07
IGP1=1.2e-5 Torr
TGHT=601A, 9.6V
TBHT= 232A, 3.7V
OMEGA =1600 C
ramp to 650A on TGHT at 0.5A/min
Wednesday, May 05, 2021, 20:05
Tapped TGHT to 694A, 11.4 V (manually)
TBHT= 232A, 3.7V
OMEGA = 1790 C
IGP1= 2.5e-05 Torr
Will monitor Pressure and temperature . Will start 4 hour count.
Wednesday, May 05, 2021, 22:03
OMEGA = 1765 C
TGHT = 694A, 11.5V
TBHT = 232A, 3.8 V
IPG1= 1.6e-05 Torr
Manually bumping TGHT to 700 A
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Friday, June 11, 2021, 08:41, Darwin Ortiz Rosales, Nb, , TARGET BOAT, Done, Nb treatment for Norman
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Friday, June 11, 2021, 08:05
Target boat with a layer of niobium foil on the bottom is used to heat up Nb samples to 1100 C for 4 hrs.
OMEGA slope = 0.99
The niobium samples are wrapped in a layer of Nb foil.
Boat is wrapped with 2 layers of Nb foil.
Good vacuum 3.00e-02 Torr
Bad vacuum 5.00e-02 Torr
Autoramping TGHT at 2A/min to 50A then to 100A, then monitor until desired temperature
Initial IGP1= 9.4e-07 Torr
Friday, June 11, 2021, 09:59
TGHT = 200 A, 2.7V
IGP1= 9.8e-07 Torr
Tap to 1100C
Friday, June 11, 2021, 10:09
Temperature reached at 10:05 am.
TGHT = 224A, 3.1V
IGP1= 1.0e-06 Torr
OMEGA= 1100C +/- 10C fluctuations
Friday, June 11, 2021, 14:10
TGHT = 224A, 3.1V
IGP1= 9.2e-.07 Torr
OMEGA = 1100C +/- 10C fluctuations
Started rampdown at -3A/min
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Wednesday, July 21, 2021, 16:45, Ferran Boix Pamies, Empty, , TARGET BOAT, Done, parasitic target thermal tests v2, foil measurement.
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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. |
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Thursday, August 05, 2021, 11:18, Darwin Ortiz Rosales, SiC, 44691-2, LP-SIS, Done, Dr blade and non-Dr blade Material Experiment (sintering)
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Thursday, August 05, 2021, 11:10
Total number of foils: 380
Total length packed 13.5 cm
container has 3 Ta heat shields.
No endcaps inserted to facilitate out-gassing
Two Ta discs at either end and three graphite discs as separators
[Left end [ blade--no blade--blade---no blade] Right end ]
Initially to ramp TGHT and TBHT to 50A at0.5 A/min
Then heat manually to OMEGA ~1400 C , ramping TGHT manually and automatically to reach 430A A (Omega slope set = 0.990)
Then temperature = 1800C
TBHT will be set fixed at 230 A (max). TBHT heated manually and automatically to max.
Good vac at 3.00 e -5 Torr
Bad vac at 5.00 e-5 Torr
Total weight into Evap2 =503.8 g
Friday, August 06, 2021, 11:33
IGP1= 8.3e-07 Torr
Start heating at 0.5 A/min on both TGHT and TBHT up to 50A
Friday, August 06, 2021, 22:34
IGP1= 7.0e-06 Torr
TGHT= 50.1 A, 0.6 V TBHT = 50.0A, 0.6V
Continue heating at 0.5A/min to 400A on TGHT and 230A on TBHT
Saturday, August 07, 2021, 10:11
Stopped autoramping. Will allow some time at 63 A on both TGHT and TBHT
Saturday, August 07, 2021, 12:19
IGP1= 1.9e-05 Torr
Manually increase TGHT and TBHT to 65 A
Saturday, August 07, 2021, 23:01
IGP1= 5.8e-06 Torr
TGHT= 64.5 A, 08V TBHT=64.6A, 0.8V
Ramp up manually while monitoring pressure
Sunday, August 08, 2021, 08:46
IGP1= 6.0e-06 Torr
TGHT = 69A, 0.85V TBHT = 69A, 0.90V
ramp up manually
Monday, August 09, 2021, 08:54
IGP1= 1.38e-05 Torr
TGHT= 90.0 A, 1.1V, TBHT= 90.0A 1.3V
Start autoramp at 0.5 A/min on both TGHT and TBHT to 400A and 230A respectively.
Changed bad vacuum to 5e-04 Torr
Monday, August 09, 2021, 21:37
IGP1= 6.6e-06 Torr
TGHT= 300.3 A, 5.0 V, TBHT = 233.0 A, 4.1V
Increase ramp rate to 2A/min for TGHT to 400 A,
OMEGA = 1430 C
Monday, August 09, 2021, 22:09
Will autoramp at 2A/min up to 424A as per regression line on attached file
Monday, August 09, 2021, 22:58
Temperature drop on OMEGA. Unexpected. Will lower current on TGHT to 418A and keep there for 4 hours. OMEGA may not be reliable
Tuesday, August 10, 2021, 3:16
IGP1=8.8e-07 Torr
TGHT = 414A, 7.5V TBHT = 233A, 4.1V
ramp down at -2A/min for TGHT and -1A/min for TBHT
Tuesday, August 10, 2021, 10:35
IGP1= 3.6e-07 Torr
Dismount
Some discs, especially end sections were coated with a golden layer. |
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Thursday, September 02, 2021, 07:14, Darwin Ortiz Rosales, TaC, 44691-7, LP-SIS, Done, TaC coating/sintering
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Thursday, September 02, 2021, 06:36
Ta tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 was pumped down over previous night
Good vacuum = 3.00 e-5 Torr
Bad vacuum = 5.00 e-4 Torr
IGP1=7.7e-07 Torr
Initiate autoramp to 50 A @ 1A/min
Thursday, September 02, 2021, 06:54
Stopped autoramp after reading email about EF-12 trip and compressed air issue. Reset to 0 A both TGHT and TBHT
Thursday, September 02, 2021, 12:01
Ispite of site compressed air issues, EVAP 2 has not tripped. Will manually increase current to40A for both TGHT and TBHT.
IGP1= 1.06 E-06 Torr.
Friday, September 03, 2021, 08:06
IGP1= 7.2e-07 Torr
TGHT= 43A, 0.5 V
TBHT= 41A, 0.48 V
Start autoramp at 1A/min to 90A on both TGHT and TBHT
Friday, September 03, 2021, 10:22
IGP1= 1.55 e-06 Torr
TGHT = 90.1 A, 1.1 V
TBHT= 90.0 A, 1.2 V
Continue ramp up at 1A/min to 400 A for TGHT and 230A for TBHT
Friday, September 03, 2021, 16:05
430A on TGHT will keep for four hours. OMEGA = 1856 C but according to regression should be 1900. will keep at this temp.
Friday, September 03, 2021, 21:11
OMEGA has been at 1875C for 4 hours. Will start ramp down @ -2A per minute for TGHT and -1A min for TBHT
TGHT = 430 A, 7.3 V (current actually fluctuates between 428 and 433 A since new power supply
TBHT = 233A, 4.0V (set to 230 but displays 233) |
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Wednesday, September 08, 2021, 12:43, Darwin Ortiz Rosales, , 44139-8-SK, TARGET BOAT, Done, C Conditioning
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Wednesday, September 08, 2021, 12:36
297 C discs were loaded onto a Ta tube wrapped in 3 Ta heatshields. (10 of which are analysis discs). They should be the first to be pushed out as they were loaded last.
The discs were loaded upside down to facilitate transfer to final container post conditioning.
a Ta foil disc was placed at the front end and a Ta spring at the back end of the tube.
The weight of the whole system is 254.4 g
Evap 2 was left to reduce pressure overnight.
Target temperature is 2000 C for five hours @ approx 450A
Good vacuum = 3e-2 Torr
Bad vacumm= 5e-2 Torr
Thursday, September 09, 2021, 08:46IGP1= 7.5 e-07 Torr
Will manually ramp up TGHT to 80 A
Thursday, September 09, 2021, 09:09
pressure began to rise at 50A so will leave at 50 A waiting for stabilization.
Current began to shoot up to rapidly, lowered current to 40A.
Thursday, September 09, 2021, 10:34
At IGP1= 1.3e-4 Torr manually increasing current again
Thursday, September 09, 2021, 12:52
IGP1= 8.6e-5 and dropping
TGHT = 60A, 0.87 V
Will begin autoramp to 120A at 1A/min
Thursday, September 09, 2021, 14:06
IGP1= 3.2e-05Torr
TGH T= 120A, 1.9V
Set autoramp to 1A/10s to 200A
Thursday, September 09, 2021, 14:57
IGP1= 1.5e-05 Torr
TGHT = 200A, 3.4V
Set Autoram to 2A/10s to 450A
OMEGA = 1249 C
At 258A OMEGA = 1420 C
continue ramp up at 2A/10s to 450
projected 2000 C is 454 A
Thursday, September 09, 2021, 16:10
Tapped up to 470 A and OMEGA 1993C. Will leave at this current because T may rise.
Thursday, September 09, 2021, 21:21
OMEGA 2011 C
IGP1 = 6.9e-06 Torr
Ramping down @ -1 A/min
Thursday, September 09, 2021, 17:27
Temperature kept around 2000 C by reducing current. It was reduced to 455A and Temperature stabilized . Time of ramp down will be 21:10 |
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Tuesday, September 14, 2021, 09:33, Darwin Ortiz Rosales, , 42218-5, LP-IG-LIS, Done, TaC coating/sintering
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Tuesday, September 14, 2021, 09:32
Ta IGLIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 was pumped down over previous night
Good vacuum = 3.00 e-5 Torr
Bad vacuum = 5.00 e-4 Torr
IGP1= 1.12 e-06 Torr
Initiate manual ramp to 50 A @ 1A/min
Tuesday, September 14, 2021, 14:44
IGP1= 1.25e-06 Torr
TGHT = 50A, 0.58V TBHT = 49A, 0.56V
Start autoramp to 400 A TGHT and 230A TBHT @ 1A/min
Heated to 1880 C and held for 4 hours. Log info written down but could not be found in system later.
Coating proceeded without issues. |
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Thursday, October 21, 2021, 09:58, Darwin Ortiz Rosales, TaC, , TARGET BOAT, Done, Coating of Ta caps and Ta springs (10 caps and 2 springs)
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Thursday, October 21, 2021, 10:02
10 TaC coated Ta caps, wrapped in graphite foil.
2 TaC coated Ta springs .
All mounted inside a target boat with enclosed ends.
Good vacuum = 3.0 e-3 Torr
Bad vacuum = 5.0 e-2 Torr
Will heat up to 1800-1900 C and keep at Temp for four hours
OMEGA slope = 0.990
*Note that the turbo pump has been replaced and this is the first EVAP2 operation after replacement*
Thursday, October 21, 2021, 10:03
IGP1= 1.6 e-06 Torr
starting ramp up at 2 amp/min to 30 A on TGHT
Thursday, October 21, 2021, 10:46
Ramping to 40 A at 2A/min and will keep there for 20 minutes.
Thursday, October 21, 2021, 11:19
IGP1= 1.2e-05 Torr and dropping
Start ramp up to 400 A at 0.5A/min
Thursday, October 21, 2021, 18:58
Started ramping at 3A/min to 468A on TGHT
Thursday, October 21, 2021, 20:15
Current at 468. Will keep there until pressure low enough.
Friday, October 22, 2021, 05:50
IGP1= 8.9 e-06 Torr
Start ramp down at -2A/min
Monday, October 25, 2021, 11:47
Upon examination the caps and springs did not appeared coated. The camera was not online so the current used was based on previous elogs. It may have evaporated TaC due to over temperature.
The materials will be cleaned, recoated and resintered. |
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Monday, October 25, 2021, 11:53, Darwin Ortiz Rosales, TaC, 42218-4, HP-IG-LIS, Done, TaC coating/sintering
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Monday, October 25, 2021, 11:52
Ta IGLIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
Good vacuum = 3.00 e-3 Torr
Bad vacuum = 5.00 e-2 Torr
Initial total weight = 439.0 g
Final weight after sintering = 438.8 g
Tuesday, October 26, 2021, 07:18
IGP1= 9.2 e-07 Torr
Will ramp to 50A at 1A/min on both TGHT and TBHT.
Tuesday, October 26, 2021, 08:37
IGP1= 3.0 e-05 Torr
TGHT= 50.2 A, 0.6 V
TBHT = 49.4 A, 0.5 V
Will allow pressure to drop further then start further ramp up
Tuesday, October 26, 2021, 14:36
TGHT = 100 A, 1.3 V
TBHT = 99 A, 1.0 V
IGP1 = 3.e-5 Torr
ramp up TGHT to 400 A and TBHT to 230 A at 1.5 A/ min
Tuesday, October 26, 2021, 18:46
Will keep at 430A on TGHT and 230A on TBHT for 4 hours.
OMEGA reading = 1653 C is suspicious based on previous coating.
Tuesday, October 26, 2021, 23:05
TGHT = 430.5 A, 6.9 V
TBHT = 232.09A, 2.8 V
IGP1= 8.8e-06 Torr
Start cooling THGT at -2A/min and TBHT at -1A/min |
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Wednesday, October 27, 2021, 11:09, Darwin Ortiz Rosales, Ta, 44691-3, LP-SIS, Done, TaC coating/sintering
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Wednesday, October 27, 2021, 11:07
Monday, October 25, 2021, 11:52
Ta LPSIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)
Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).
Evap 2 will be pumped down over previous night
Good vacuum = 3.00 e-3 Torr
Bad vacuum = 5.00 e-2 Torr
Initial total weight = 464.8 g
Final weight after sintering =
Thursday, October 28, 2021, 07:46
IGP1= 7.4e-07 Torr
Initiating autoramp to 40 A on both TGHT and TBHT
ramp rate = 1 A/min
Will keep at 40A for approximately 1 hour or until pressure below 1e-05 Torr
Thursday, October 28, 2021, 09:41
IGP1= 1.9e-06 Torr TGHT = 40.3 A, 0.48 V TBHT = 39.0 A, 0.48V
Autoramp @ 1A/min to 100A on both TGHT and TBHT
Thursday, October 28, 2021, 12:57
IGP1= 1.1e-06 Torr
TGHT = 100 A, 1.3 V
TBHT = 100 A, 1.2 V
Start autoramp at 2A/min to 400 for TGHT and 230 for TBHT
The current from the plot (below) required to reach 1900 C seems too high.
Will take to 430 A as previous. The slope was chequed previously. Need to check OMEGA.
Thursday, October 28, 2021, 20:08
IGP1= 3.34 e-06 Torr
TGHT = 430A , 7.2 V
TBHT = 233A, 4.1V
OMEGA = 1628C
Start ramp down at -2A/min for TGHT and -1A/min for TBHT
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44691-3 TaC coating |
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TGHT |
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TBHT |
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Temperature (C) |
Current (A) |
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Temperature ( C ) |
Voltage (V) |
Current (A) |
Voltage (V) |
Current (A) |
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1900 |
512.88 |
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1250 |
3.90 |
255.0 |
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1700 |
434.06 |
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1302 |
4.30 |
279.0 |
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1800 |
473.47 |
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1343 |
4.60 |
294.0 |
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1423 |
5.10 |
325.0 |
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1484 |
5.7 |
348.0 |
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1555 |
6.2 |
377.0 |
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Slope |
2.537 |
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Y intercept |
598.66 |
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R2 |
0.999 |
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Monday, November 01, 2021, 07:39, Darwin Ortiz Rosales, Empty, 44508-3, LP-SIS, Done, TaC coating/sintering
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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.
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Wednesday, November 03, 2021, 09:24, Darwin Ortiz Rosales, Empty, 44691-10, LP-SIS, Done, TaC coating/sintering
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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
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Monday, November 08, 2021, 09:36, Darwin Ortiz Rosales, Endcaps, , TARGET BOAT, Done, Coating of Ta caps and Ta springs (8 caps and 2 springs)
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Monday, November 08, 2021, 09:35
Two groups of 4 caps wrapped in graphite with graphite discs in between.
Two TaC coated springs at either end of the boat.
Target temperature = 1800 C
Expected around 430 TGHT
Good Vacuum 3e-03 Torr
Bad Vacuum 5e-02 Torr
Evap two was left pressuring down over weekend.
Monday, November 08, 2021, 09:35
Starting autoramp to 40 A at 1A/min
TGHT = 2.5e-07 Torr
Monday, November 08, 2021, 10:57
IGP1 = 8.5e -06 Torr and dropping
set autoramp to 50A at 1A/min
IGP1 1.0e-05 Torr and dropping
Set TGHT to autoramp to 90 A @ 1A/min and leave until pressure below 9e-06 Torr
Monday, November 08, 2021, 15:09
IGP1= 9.6e-06 Torr
Start autoramp to 400A at 2A/min
Monday, November 08, 2021, 17:37
TGHT = 377 A, 6.1V
OMEGA= 1234 C
Monday, November 08, 2021, 17:58
OMEGA = 1292 (cannot trust )
400A, 6.3 V
1.4 e-05 Torr
Autoramp @ 1A/min to 425A
Will heat to 425A and keep there for four hours
Monday, November 08, 2021, 22:02
TGHT=420A, 6.7V
IGP1= 7.0e-06 Torr
Start ramp down at -2A/min
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Wednesday, February 09, 2022, 08:08, Darwin Ortiz Rosales, Nb, , TARGET BOAT, Done, Nb annealing for Phillip
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Wednesday, February 09, 2022, 06:55
Target boat with a layer of niobium foil on the bottom used to heat up Nb samples to 1100 C for 4 hrs.
OMEGA slope = 0.99
The niobium samples are wrapped in a layer of Nb foil.
Boat is wrapped with 2 layers of Nb foil.
Good vacuum 3.00e-02 Torr
Bad vacuum 5.00e-02 Torr
Autoramping TGHT at 3A/min to 180A, then monitor until desired temperature (based on eLog 550)
Initial IGP1=9.9e-07 Torr
Wednesday, February 09, 2022, 08:00
TGHT = 225 A, 3.2V
IGP1= 1.17e-06 Torr
OMEGA= 1100C +/- 12C fluctuations
Wednesday, February 09, 2022, 11:55
TGHT= 225 A, 3.3 V
IGP1= 9.7e-07 Torr
OMEGA=1100C +/- 10C fluctuations
Wednesday, February 09, 2022, 11:56
Start cooling @-2A/min |
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Thursday, February 10, 2022, 08:58, Darwin Ortiz Rosales, SiC, , HP-FEBIAD, Done,
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Thursday, February 10, 2022, 08:52
Total number of foils: 528 ( including 10 analysis discs)
Weight without springs = 1521.9 g (includes heatshields and T bar)
Total length packed 18.1 cm (including 10 analysis discs that will be removed)
container has 3 Ta heat shields.
No endcaps inserted to facilitate out-gassing
Ta coated spring at ends
Initially to ramp TGHT and TBHT to 50A at0.5 A/min
Then heat automatically heat to OMEGA ~1400 C , then continue to max 530A on TGHT and 230A on TBHT (Omega slope set = 0.990)
Then temperature = 1800C
TBHT will be set fixed at 230 A (max). TBHT heated manually and automatically to max.
Good vac at 3.00 e -4 Torr
Bad vac at 5.00 e-2 Torr
IGP1= 1.0 e-06 Torr at start of initial ramp
IGP1 = 5.7 e-06 Torr
TGHT = 50.0 A, 0.6 V
TBHT = 50.0A, 0.5 V
continue to ramp up at 0.5A/min to 200A
Friday, February 11, 2022, 07:59
IGP1=3.0e-07 Torr and stable
TGHT= 201A, 2.8V
TBHT = 201A, 2.6V
continue autoramp at 1A/min to 230A on TBHT and 450A on TGHT
Friday, February 11, 2022, 12:41
IGP1= 6.6e-05 Torr
TGHT= 450A, 6.5V
TBHT= 232A, 3.1V
OMEGA = 1258C
Allowing pressure to drop. Will continue ramp up when [pressure around 9-e-6 Torr
Friday, February 11, 2022, 13:59
IGP1= 2.4e-05 Torr
Will ramp up at 1A/min to 550A on TGHT
Friday, February 11, 2022, 15:54
IGP1= 2.4e-05 Torr
TGHT= 551.0A, 8.3V
TBHT=232A, 3.2V
OMEGA= 1426 C
ramp to 600 A @ 2A/min
Friday, February 11, 2022, 16:23
TGHT= 600.1A, 9.3V
TBHT= 232A, 3.2V
OMEGA = 1612C
ramp to 689 @2A/min to 1800 C as projected in regression plot attached
Friday, February 11, 2022, 21:20
Evap has been at 1800 +/- 20 C for 4 hours and 10 minutes
OMEGA 1802 C
TGHT = 689 A, 11.0V
TBHT=232.8 A, 3.26V
IGP1= 1.3e-05 Torr and stabilizing.
will start cool down at -2A/min TGHT and -1A/min TBHT
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Tuesday, February 15, 2022, 12:37, Darwin Ortiz Rosales, Nb, , TARGET BOAT, Done, Nb annealing for Phillip
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Wednesday, February 09, 2022, 06:55
Target boat with a layer of niobium foil on the bottom used to heat up Nb samples to 1400 C for 4 hrs.
OMEGA slope = 0.99
The niobium samples are wrapped in a layer of Nb foil.
Boat is wrapped with 2 layers of Nb foil.
Good vacuum 3.00e-02 Torr
Bad vacuum 5.00e-02 Torr
Autoramping TGHT at 2A/min to 200A, then monitor until desired temperature
Initial IGP1=6.0e-06 Torr
Tuesday, February 15, 2022, 12:44
Increasing ramp up to 3A/min to 220 A as pressure very stable
Tuesday, February 15, 2022, 14:04
ramped up manually to 1400C
IGP1 =3.9 e-06 Torr
TGHT = 340A, 5.5V
OMEGA = 1400 C
Tuesday, February 15, 2022, 14:21
Temperature on OMEGA up to 1413 C
Lowering current to 332A , OMEGA = 1400 +/- 5C
Wednesday, February 16, 2022, 11:43
On Tuesday February15, 2020 @18:04 started ramp down @-3A/min
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