Monday, June 22, 2015, 13:00

Containers is coated with TaC. Wrapped with 3 layers of Ta heat-shield.  Air blown to for quick dry.

Installed, and pumped down, vac currently at 6.7e-6 Torr. 

HS water valve open, no leaks detected. 

Stepping up TGHT/TBTH:  50A.

 Monday, June 22, 2015, 14:22

Pressure is coming down, currently at 1.75e-5 Torr.

auto-ramping initiated: TGHT = 820A; TBHT = 230A, rate at 2A/min.

 Tuesday, June 23, 2015, 00:50

Target container has reached to 1860C and has been heated for almost 4 hours, with TGHT at 800A/12.60V, DV = 6.28. TBHT at 230A/3.8V.  

Vac at 3e-6 Torr.  

Cooling down at 2A/min.  

Chamber can be vented tomorrow and SiC can be loaded in for the sintering process. 

John Wong wrote:

Monday, June 22, 2015, 13:00 Containers is coated with TaC. Wrapped with 3 layers of Ta heat-shield.  Air blown to for quick dry. Installed, and pumped down, vac currently at 6.7e-6 Torr.  HS water valve open, no leaks detected.  Stepping up TGHT/TBTH:  50A.  Monday, June 22, 2015, 14:22 Pressure is coming down, currently at 1.75e-5 Torr. auto-ramping initiated: TGHT = 820A; TBHT = 230A, rate at 2A/min.  Tuesday, June 23, 2015, 00:50 Target container has reached to 1860C and has been heated for almost 4 hours, with TGHT at 800A/12.60V, DV = 6.28. TBHT at 230A/3.8V.   Vac at 3e-6 Torr.   Cooling down at 2A/min.   Chamber can be vented tomorrow and SiC can be loaded in for the sintering process.

 Tuesday, June 23, 2015, 10:17

vented in air and opened up this morning.

coating looks good.

loading container now...

Tuesday, June 23, 2015, 12:21

Target container is loaded with 485 discs of SiC with packed length of 17.4cm. 

Container is wrapped with 3 Ta-heat shields and previously coated/sintered with TaC.

Chamber is currently being pumped down

TGHT will be ramped up to 800A, ~1800C, and TBHT is limited to 230A max.

 Tuesday, June 23, 2015, 15:53

HS valves are open, no leaks detected.

TGHT stepped up to 70A, pressure is currently at 4.17e-5 torr and coming up. 

Initiated auto-ramping at 0.5A/min for both TGHT and TBHT: good vac at 3.0e-5, bad vac at 4.0e-5 Torr.

 Wednesday, June 24, 2015, 00:03

Stopped auto-ramping about 2 hours ago.  

Manual stepped up TGHT to 73A.  Vac is stabilizing at 5e-8 Torr.  Will keep it at that current over night.

 Wednesday, June 24, 2015, 07:41

Vac has come down to 3.6e-6 Torr.

Continue to step up TGHT...

 Wednesday, June 24, 2015, 23:52

It has been a super long day operating the evaporator and finally the target is up to 1800C.  Vac is coming down from 2.e-5 Torr. 

TGHT is at 790A/12.61V, DV at 6.60V, TBHT at 230A/3.57V.  Omega temp reader is at 1680C - that's due to the window being coated with SiC, as expected. 

Target will continue heated at that current for over night, and will start the cooling process next AM. 

Thursday, June 25, 2015, 06:18  

Target is holding pretty well over night.  Vac is coming down to 1.6e-6 Torr. 

Initiated cooling down at 2A/min. 

John Wong wrote:

Tuesday, June 23, 2015, 12:21 Target container is loaded with 485 discs of SiC with packed length of 17.4cm.  Container is wrapped with 3 Ta-heat shields and previously coated/sintered with TaC. Chamber is currently being pumped down TGHT will be ramped up to 800A, ~1800C, and TBHT is limited to 230A max.  Tuesday, June 23, 2015, 15:53 HS valves are open, no leaks detected. TGHT stepped up to 70A, pressure is currently at 4.17e-5 torr and coming up.  Initiated auto-ramping at 0.5A/min for both TGHT and TBHT: good vac at 3.0e-5, bad vac at 4.0e-5 Torr.  Wednesday, June 24, 2015, 00:03 Stopped auto-ramping about 2 hours ago.   Manual stepped up TGHT to 73A.  Vac is stabilizing at 5e-8 Torr.  Will keep it at that current over night.  Wednesday, June 24, 2015, 07:41 Vac has come down to 3.6e-6 Torr. Continue to step up TGHT...  Wednesday, June 24, 2015, 23:52 It has been a super long day operating the evaporator and finally the target is up to 1800C.  Vac is coming down from 2.e-5 Torr.  TGHT is at 790A/12.61V, DV at 6.60V, TBHT at 230A/3.57V.  Omega temp reader is at 1680C - that's due to the window being coated with SiC, as expected.  Target will continue heated at that current for over night, and will start the cooling process next AM.  Thursday, June 25, 2015, 06:18   Target is holding pretty well over night.  Vac is coming down to 1.6e-6 Torr.  Initiated cooling down at 2A/min.

 Thursday, June 25, 2015, 16:09

Vented in air and took out this afternoon.

Target looks good [see photos]

Window for OMEGA fully coated from outgassing of target materials

 BP1 swapped with RP2 (TS beamline)

U-line installed.

Wednesday, August 05, 2020, 13:37: Roughing. 

Wednesday, August 05, 2020, 13:39: Open RV1 to EVAP 2 chamber.

Wednesday, August 05, 2020, 14:08: Turbo pump on. 

Wednesday, August 05, 2020, 14:17: Turbo pump on (green) / Shut - off. 

Wednesday, August 05, 2020, 14:18: BP1 off. Runs ok. 

Tuesday, December 20, 2016, 15:05

confirmed ~full tank of Ar for glove box --> ~1600psi 

 Wednesday, January 14, 2015, 13:46: Roughing

Wednesday, January 14, 2015, 14:57: Starting turbo

Monday, January 19, 2015, 13

Water opened up to one circuit at at time. No response on the vacuum could be seen.

IGP1 at 1.7E-7 T

IGP2 at 3E-8 T

Tuesday, January 20, 2015, 13:11: Stopped turbo and roughing pump.

Wednesday, January 21, 2015, 15:46: Venting

Rick and Anders found CG1A to be reading too high a value. A borrowed gauge from the vacuum group confirmed this. A new gauge will be installed

Thursday, January 22, 2015, 14:06: Roughing

Thursday, January 22, 2015, 14:18: Venting

The reading is consistent between CG1A and CG1B, which simplifies pump down.

 Darwin reported that he was unable to achieve vacuum of 150mTorr. The flex-line HS had been removed last week for modifications. SS gaskets received today. Replaced HS gaskets (Cu). 

Monday, July 13, 2020, 11:00: Roughing. 

Monday, July 13, 2020, 11:44: Vacuum to 200mTorr. Venting.

Monday, July 13, 2020, 11:55: Roughing. HS waterlines were opened. No visible leak detected.

Monday, July 13, 2020, 12:32: Venting. Vacuum to 175mTorr.

Monday, July 13, 2020, 12:34: Roughing.  

Monday, July 13, 2020, 15:21: Turn off the roughing pump. Vent in the am & plan to remove the HS to leak check the HS & EVAP 2. 

Tuesday, July 14, 2020, 07:42: Venting. 

Tuesday, July 14, 2020, 08:23: Flexible line HS removed. U-Line installed. Roughing. 

Tuesday, July 14, 2020, 08:54: Turbo pump on. 

Tuesday, July 14, 2020, 11:15: Vacuum @ 3.14e-06T. Turbo & Roughing pump off. 

Tuesday, July 14, 2020, 11:25:

HS leak checks:

0.0e-08 atm-cc/sec 

0.0e-07 atm-cc/sec @ 75 PSI He w/ sniffer.

0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer. (Note HS is very dirty inside)

Tuesday, July 14, 2020, 11:35: Venting EVAP 2. He bottle connected on "Air-In" on the HS water supply line. 

Tuesday, July 14, 2020, 13:50:

Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.

Tuesday, July 14, 2020, 13:53: Roughing.

Tuesday, July 14, 2020, 17:33: Turbo pump on. 

Wednesday, July 15, 2020, 10:31: Turbo pump off. 

Wednesday, July 15, 2020, 12:02: HS Leak checked in the cold lab: 0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer.

Wednesday, July 15, 2020, 12:34: Venting. 

Wednesday, July 15, 2020, 13:37: Installed flex-line HS. Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.

Wednesday, July 15, 2020, 13:42: Roughing. 

Wednesday, July 15, 2020, 14:16: Turbo pump on. 

Wednesday, July 15, 2020, 15:59: Vacuum @ 3.85e-06T 

Wednesday, July 15, 2020, 16:00: Waterline opened. No immediate response on Vacuum. 

Wednesday, July 15, 2020, 16:03: Vacuum @ 3.69e-06T and continuing to drop. 

 Short oven loaded with additional hardware are spacers into the flex-line HS.

A Ta short tube was wrapped with 3 tantalum foils,

a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed.

The tube was set in the EVAP2 

Wednesday, August 12, 2020, 11:48: Electrical check in EVAP 2:

Target to HS @ 563V 

Leg to leg above bracket

TGHT A @ 10A: 1.332 mOhm

TGHT B @ 10A: 1.300 mOhm

Leg to leg w/ bracket

TGHT A @ 10A: 1.490 mOhm

TGHT B @ 10A: 1.491 mOhm

Wednesday, August 12, 2020, 12:08: Roughing.

Wednesday, August 12, 2020, 2:08: Turbo.

Thursday, August 13, 2020, 09:14

 IGP1 = 7.9e-7 Torr

A leak check was performed, no leak detected.

 TGHT power supply on.

Thursday, August 13, 2020, 10:03

IGP1 = 7.7e-7 Torr.

The current was tapped to 50 A 

Autoramp set to 1 A each 10 s to 200 A

Good vaccum 3e-5 Torr

Bad vacuum 5e-5 torr

Thursday, August 13, 2020, 10:47

Autoramp reached 200 A

TGHT =  200.25 A, 2.38 V

IGP1 = 1.58e-6 Torr

 Thursday, August 13, 2020, 11:07

TGHT =  200.25 A, 2.38 V

IGP1 = 9.66e-7 Torr

Target is shinning dimly

Omega reads 1033 +-50 degC

ARIEL pyrometer is installed in the back of the EVA2 to measured the body temperature of the oven

Thursday, August 13, 2020, 15:30

The connection of the pyrometer with the software was not possible to establish and delay the ramp up of the oven

Friday, August 14, 2020, 10:47

Restarting experiment, 

IGP1 =  4.24e-7 Torr

TGHT = 0 A, ) V, (TGHT was ramped down)

Autoramp set to 1 A each 10 s to 200 A

Good vaccum 3e-5 Torr

Bad vacuum 5e-5 torr

Friday, August 14, 2020, 11:48

Target is shinning dimly

Omega reads 1033 +-50 degC

Autoramp set to 1 A each 10 s to 250 A

Autoramp set to 5 A each 60 s to 450 A

Friday, August 14, 2020, 13:51

TGHT = 6.46 V, 450.13 A

IGP1 = 2.32e-6 Torr

Omega = 1931 °C (slope 0.99)

ARIEL pyrometer = 1504.5 °C (slope 0.929)

Friday, August 14, 2020, 14:06

Autoramp = 5A each 2 min until 500 

Autoranp stopped at 475 A (EPICS TGHT = 6.87V, 476.663A)

Omega = 2013 °C

ARIEL pyrometer = 1547 °C

Friday, August 14, 2020, 17:34

Autoramp is set to  5A each 2 min until 500 

TGHT = 7.403 V, 500.006 A, 

omega = 2104 C

AP= 1586 C

Friday, August 14, 2020, 17:49

Autoramp  is set to  5A each 2 min until 550 

Autoramp stopped by itself at 545 A instead of 550 A

TGHT = 8.11V, 547.65A, 

omega = 2214C

AP= 1656.8 C

IGP1=6.8e-6 Torr

Friday, August 14, 2020, 18:13

 Autoramp  is set to  10A each 2 min until 600

Friday, August 14, 2020, 21:42

TGHT = 9.213 V, 597.8 A,

IGP1 3.27e-6 Torr

Omega =  2380 °C

Ramping down at 5 A per min to 475 A

Monday, August 17, 2020, 09:02

TGHT =  6.741 V, 471.6 A,

IGP1 = 3.46e-7 Torr

Omega = 2052 6°C 

Proceeded to ramp down at  5 A per min to 0 A 

Saturday, September 05, 2020, 12:56

A Ta tube was wrapped with 3 tantalum foils,

a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed.

The tube was set in the EVAP2 

IGP1 = 3.6e-7 Torr 

Saturday, September 05, 2020, 12:57

Autoram set to 10A/30 s to 200 A

 Saturday, September 05, 2020, 13:11

TGHT = 2.7 V, 198.9 A

IGP1 =3e-6 Torr

Autoramp set to to 300 A at 5A/30s 

 Saturday, September 05, 2020, 14:45

IGP1 = 5.1e-7 torr

TGHT = 4.5 V, 303 A

Oemga = 1259 C, 

AP = 1233.5 C

Autoramp set to 450A at 5 A/30s 

 Saturday, September 05, 2020, 15:05

TGHT = 7.3 V, 457.7 A

IGP1 = 2.8e-6 Torr

Omega = 1722 °C

AP = 1572.2 °C

Saturday, September 05, 2020, 15:16 

TGHT = 9.2 V, 552.5 A

IGP1 = 7.5e-6 Torr

Omega = 2016 °C 

AP= 1735.9 °C

Saturday, September 05, 2020, 21:33 

IGP1 = 1.1e-6 Torr

TGHT = 11.2 V, 651.9 A

Omega = 2300 °C

 Tests were performed with external power supply. No target boat or container.

Small power on heating small heating elements on parasitic target attached on isac heatshield with water cooling on. 

 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.

 2020-11-04 17:31: target installed with boat containing graphite container for outgassing. Roughing pump on.

 2020-11-04 17:49 turbo on, leaving it pumping over night.

 2020-11-05 11:32 leak check ok. Ramping up target to 200A 2A/10s.

 2020-11-05 11:53 IGP1:1.1e-6T . Ramping up target to 300A 1A/10s.

 2020-11-05 11:53 IGP1:1.2e-6T . Pyrometer:1320degC. Ramping up target to 400A 1A/10s.

 2020-11-05 11:53 IGP1:1.8e-6T . Pyrometer:1650degC. Ramping up target to 500A 1A/10s.

 2020-11-05 12:57 IGP1:3.4e-6T . Pyrometer:1910degC. Ramping up target to 525A 1A/10s.

 2020-11-05 13:02 IGP1:3.6e-6T . Pyrometer:1990degC. Leaving it hot for 1h.

 2020-11-05 14:00 IGP1:2e-6T stable . Pyrometer:1990degC. cooling down 2A/10s.

 2020-08-05 7.13pm Roughing pump on

2020-08-06 10:48am Turbo was turned on by Marla in the morning. Vacuum IGP1 4e-6Torr. Water leak check performed, everything good to start heating up target. Waiting for Anders confirmation to start.

2020-08-06 4:38pm after changing setup to metallic connections only. Roughing on. After some minutes abnormal behavior in vacuum.

Turning water off to see if it is a small water leak.

Water purged, no change in vacuum.

IEVAP2:RV1 was closed. After opening, normal vacuum behavior recovered. The valve is automatically closing when reaching 100Torr. Wasn't doing that before. Turbo on now.

2020-08-07 9:24am pumping over night, vacuum at 8e-7torr. Everything ready for test. Ramping up target heater.Up to 50A 1A/20s

2020-08-07 9:48am all good at 50A, ramping to 250 1A/10s

2020-08-07 10:27am all good at 250A, ramping to 400 1A/10s

2020-08-07 10:57am all good at 400A, ramping to 500 1A/10s

2020-08-07 11:17am Tc type C might have been deatached at 500A, ramping to 600 1A/10s

2020-08-07 11:37am All good, ramping to 700 1A/10s

2020-08-07 11:58am 1950degC on pyrometer, 1200degC on type C TC (probably not well attached anymore), TCs on heatshield [30-40]degC. Pressure 9e-6Torr

2020-08-07 12:44pm All values stable after 45min, starting to ramp up parasitic target heating elements.

2020-08-07 1:15pm Open circuit, would seem that one of the heating elements cracked. Cooling down the target.

 Tuesday, July 18, 2017, 15:26

Problems occured with TGHT water supply paddle wheel stopped and therefore tripped off evap2 last week.

All paddle wheels were replaced today for evap2 [other than the chiller].

A build up of dirt was found on all wheels replaced.

Evap2 good to go.

Will test flow meters before heating up to higher setpoints to confirm everything is working.

 The TGHT PS was found to be defective.

It was uninstalled w/ Joel S: I2020-02-28-2. 

It was replaced with the conditioning station PS & connected. The chiller is not required and has been unplugged. 

Wednesday, March 04, 2020, 14:00. Controls Involved (PS still locked out via main breaker)

Wednesday, March 04, 2020, 14:31: Water supplies opened. All ok except Chiller (Disconnected from PS, but not the supply/return, do not open Chiller lines) 

Controls work ongoing.

Thursday, March 05, 2020 (Darwin)

Gelo finished installation of the other power supply S:_____________________.

It was tested and proved to be operational and epics controlled.  Tested up to 60A

Chiller interlock was removed as it is no longer needed.

Will wait for Aaron to swap FEBIAD assembly in EVAP 2.

 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. 

 Wednesday, November 26, 2014, 13:47

OMEGA-IR laser had a dark patch on it [see picture]

Cleaned window, still dark patch

When tested by itself, through air, not through window, patch still visible - cleaned lens of OMEGA-IR, still no change.

Conclusion: assuming laser used to be able to focus the OMEGA-IR to a specific area - so visual only, but the measurements itself will not be affected.

Wednesday, November 26, 2014, 13:53 

Backing pump trips off every time roughing valve turned on through epics.

Requested further investigation...

Friday, November 28, 2014, 12:09

Backing Pump has been replaced, waiting on a reply from OMEGA re: dark patch on laser

Pancake monitor was also acting funny. Background was reading 100cpm and jumping up to as high as 400cpm by simply moving the probe piece.

The wire connecting the probe to the monitor was replaced and works fine now.

 Tuesday, December 09, 2014, 15:55

Finally got a reply from the OMEGA people:

"That [ dark patch] would happen because of sharp bends in the fiber, or simply defective fiber cable.

As manufacturer we allow 2% of broken fibers, out of 870 in the bundle.

As far as measurements is concerned, if IR2 is used in dual colour mode, 

the field of view can be obstructed as much as 50%, 

without changing the readings accuracy. This laser issure should not affect readings."

-Quote from Brian Newport from OMEGA

Tuesday, November 01, 2022, 17:24

2 samples of np-TiO2/C fibres were produced using the e-spinner.  Each sample was wrapped with a piece of graphite sheet, and then loaded into a target container. 

Sample will be heated to 1700 C.

TGHT will be autoramped to 450 A; this should be close to 1600 C. (see elog#596)

Good vacuum: 3e-5 Torr

Bad vacuum: 5e-5 Torr

Omega slope: 0.99

Initiate autoramp: 1 A/min

Chamber has been pumped down below 4.2e-6 Torr.

 Tuesday, November 01, 2022, 22:46

 Pressure currently at 6.4e-7 Torr.

Initiated auto-ramping

 Wednesday, November 02, 2022, 09:37

TGHT was ramped up to 448A (readback 445-452A / 8.05V - 8.11V).  The voltage is much higher than the last process, see elog #596.

Temperature is much higher at this current, reading at 1870 - 1872 C. 

Will keep at this setting for now and continue to monitor.

See attachment#1 for the TGHT-Pressure plot.

 Wednesday, November 02, 2022, 21:35

Samples have been heated for over 16 hours; temp has been stabilized at 1875 C, vacuum at 7.3 e-7 Torr. 

Initiated cooling at 1A/min.

Chamber will be vented tomorrow morning.