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.

John Wong wrote:

Nikita Bernier wrote: Wednesday, June 20, 2012, 17:23 New Target boat, with no coating, wrapped with a 0.002 inches thick Ta foil, contains NiO D-shape discs : Sample,   # Disks,    Mass (g),    Thickness (mm) 1    12,  1.9396,  1.938 2    13,  0.9592,  0.847 3    25,  2.6675,  3.06 See John's Ipad for their recipes. Evaporator #2 is now auto-ramping overnight at 0.5 A/min, up to 580 A, with the maximum voltage limited at 14 V, between 3.00e-05 (Good vacuum) and 4.00e-05 Torr (Bad vacuum).   Wednesday, June 20, 2012, 22:28 TGHT tripped off at 78A due to high out-gassing pressure.  The current was tapped down to 75A before it was turned back on.  Changed ramping rate from 0.5A/min to 0.2A/min.   Initiate auto-ramping...   Thursday, June 21, 2012, 08:35 Vacuum has come down to 7e-7 as TGHT is being ramped up at 0.2A/min. (see attachment#1). Increase TGHT rate to 2A/min. The temperature should be measured when the heater gets up to around 500A.

 Thursday, June 21, 2012, 17:37

The NiO discs were heated up to 1500C at 560A.  The target heater was lowered in steps and the temperature was measured.  At 320A, the target container was ~1110C.  (see attachment #1) 

There was a sign of resistant on the target container as the p/s voltage started to go up at a higher rate.  (see attachment#2, 3, 4 for the archived striptool).

Unfortunately, the target container was broken; it was most likely reacted with the Ni.  (see attachment#5)

So.... the possible solution?!  TRY coating the container with Ta2O5.  Will discuss more in the Friday Jun 22 meeting. 

Wednesday, June 20, 2012, 17:23

New Target boat, with no coating, wrapped with a 0.002 inches thick Ta foil, contains 3 NiO pellets :

Sample,   # Disks,    Mass (g),    Thickness (mm)

1    12,  1.9396,  1.938

2    13,  0.9592,  0.847

3    25,  2.6675,  3.06

See John's Ipad for their recipes.

Evaporator #2 is now auto-ramping overnight at 0.5 A/min, up to 580 A, with the maximum voltage limited at 14 V, between 3.00e-05 (Good vacuum) and 4.00e-05 Torr (Bad vacuum).

Thursday, June 21, 2012, 18:14  

See attachment #1, 2 for the density measurements and the graph for the disc thickness  -JW 

Nikita Bernier wrote:

Wednesday, June 20, 2012, 17:23 New Target boat, with no coating, wrapped with a 0.002 inches thick Ta foil, contains NiO D-shape discs : Sample,   # Disks,    Mass (g),    Thickness (mm) 1    12,  1.9396,  1.938 2    13,  0.9592,  0.847 3    25,  2.6675,  3.06 See John's Ipad for their recipes. Evaporator #2 is now auto-ramping overnight at 0.5 A/min, up to 580 A, with the maximum voltage limited at 14 V, between 3.00e-05 (Good vacuum) and 4.00e-05 Torr (Bad vacuum).

Wednesday, June 20, 2012, 22:28

TGHT tripped off at 78A due to high out-gassing pressure.  The current was tapped down to 75A before it was turned back on. 

Changed ramping rate from 0.5A/min to 0.2A/min.  

Initiate auto-ramping... 

 Thursday, June 21, 2012, 08:35

Vacuum has come down to 7e-7 as TGHT is being ramped up at 0.2A/min. (see attachment#1).

Increase TGHT rate to 2A/min.

The temperature should be measured when the heater gets up to around 500A.

 Thursday, February 09, 2017, 11:47

A new heatshield with flexible water lines has been put into evap2 last Friday Feb3rd

 Dan made a set of new cooling lines for the Source Tray Heat Shield cooling yesterday. No joints on the lines. Use same VCR fitting 3/8 -> 1/4" as for the Heat Shield. The old lines had worn threads on the male VCR nut.

 Thursday, May 11, 2017, 11:25

IGP2 has been having problems where sometimes it turns off and requires simply unplugging and plugging back in.

Ion gauge has been replaced.

At first the vacuum box appeared red on epics and when attempting to reset everything nothing would work and the backing pump would try and turn on then timeout.

Apparently this new ion gauge draws slightly more than the old one and this blew a fuse in the PLC.

Old fuse was 2A, so a new 3A fuse has been replaced - seems to be working fine now. 

Old HS sprang a leak in the copper tubing.  

HS#44378-15

Tuesday, April 12, 2022, 13:35: Roughing. 

Tuesday, April 12, 2022, 13:49: TP1 switched on. 

Tuesday, April 12, 2022, 13:57: TP1 stable (green).

Tuesday, April 12, 2022, 14:10: Vacuum @ 3.71e-05T & dropping.

Tuesday, April 12, 2022, 14:11: HS waterline opened. 

Tuesday, April 12, 2022, 14:12: Vacuum @ 3.32e-05T.

Tuesday, April 12, 2022, 14:22: Vacuum @ 2.19e-05T (Stable).

 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

Tuesday, September 17, 2013, 11:14

Target boat contains 5 Nb discs.  3 discs are wraps with 0.001" thin of Nb foil (99.8% pure), and 2 are wraps with 0.001" Ta foil (see attachment#1)

Chamber has been pumped down over night.  Pressure is currently at 9.8e-7 Torr. 

Heating instructions:

Samples will be heated up to 800C.  TGHT will be ramped up accordingly. (Two thermocouples are wielded on the target container.)

Once at the desired temperature; the samples will be heat for 4 hours before cooling down.

 Tuesday, September 17, 2013, 14:37

Target temperature has reached to 800C at around 13:00 (see attachment#2)

TGHT @ 230A/3.07V (local 233A/3.25V). 

IG @ 1.06e-6 Torr. 

The heater will be ramped down at ~17:00 at 2A/min.

 Tuesday, September 17, 2013, 17:36

Target temp: T1 = 805C, T2=797.6C

IG @ 9.4e-7 Torr.

Cooling down initiated. 

 Wednesday, September 18, 2013, 11:34

TGHT at 0A.  Temp at 22C. 

IG @ 5.8e-7 Torr.

Venting chamber.

John Wong wrote:

Tuesday, September 17, 2013, 11:14 Target boat contains 5 Nb discs.  3 discs are wraps with 0.001" thin of Nb foil (99.8% pure), and 2 are wraps with 0.001" Ta foil (see attachment#1) Chamber has been pumped down over night.  Pressure is currently at 9.8e-7 Torr.  Heating instructions: Samples will be heated up to 800C.  TGHT will be ramped up accordingly. (Two thermocouples are wielded on the target container.) Once at the desired temperature; the samples will be heat for 4 hours before cooling down.  Tuesday, September 17, 2013, 14:37 Target temperature has reached to 800C at around 13:00 (see attachment#2) TGHT @ 230A/3.07V (local 233A/3.25V).  IG @ 1.06e-6 Torr.  The heater will be ramped down at ~17:00 at 2A/min.  Tuesday, September 17, 2013, 17:36 Target temp: T1 = 805C, T2=797.6C IG @ 9.4e-7 Torr. Cooling down initiated.   Wednesday, September 18, 2013, 11:34 TGHT at 0A.  Temp at 22C.  IG @ 5.8e-7 Torr. Venting chamber.

 Thursday, September 19, 2013, 11:41

Target boat contains batch#2 Nb samples (see attachment #1)

Chamber has been pumped down over night.  

IG @ 5.5e-07 Torr. 

CG1B @ 0.033 T

CG1A @ 0.127 T

There is a leak in the backing line.  BV1 was bypassed in order to turn on the turbo pump. (Will investigate the leaks after the processes are done)  

*See attached picture to view samples

Laura Lambert wrote:

John Wong wrote: Tuesday, September 17, 2013, 11:14 Target boat contains 5 Nb discs.  3 discs are wraps with 0.001" thin of Nb foil (99.8% pure), and 2 are wraps with 0.001" Ta foil (see attachment#1) Chamber has been pumped down over night.  Pressure is currently at 9.8e-7 Torr.  Heating instructions: Samples will be heated up to 800C.  TGHT will be ramped up accordingly. (Two thermocouples are wielded on the target container.) Once at the desired temperature; the samples will be heat for 4 hours before cooling down.  Tuesday, September 17, 2013, 14:37 Target temperature has reached to 800C at around 13:00 (see attachment#2) TGHT @ 230A/3.07V (local 233A/3.25V).  IG @ 1.06e-6 Torr.  The heater will be ramped down at ~17:00 at 2A/min.  Tuesday, September 17, 2013, 17:36 Target temp: T1 = 805C, T2=797.6C IG @ 9.4e-7 Torr. Cooling down initiated.   Wednesday, September 18, 2013, 11:34 TGHT at 0A.  Temp at 22C.  IG @ 5.8e-7 Torr. Venting chamber.    Thursday, September 19, 2013, 11:41 Target boat contains batch#2 Nb samples (see attachment #1) Chamber has been pumped down over night.   IG @ 5.5e-07 Torr.  CG1B @ 0.033 T CG1A @ 0.127 T There is a leak in the backing line.  BV1 was bypassed in order to turn on the turbo pump. (Will investigate the leaks after the processes are done)   *See attached picture to view samples

Thursday, September 19, 2013, 17:01  

TGHT reached to 800A.  Temp at 795.9C for 4 hours.  Vac at 5.8e-7 Torr.

Cooling down initiated.  ramping rate at 2A/min. 

John Wong wrote:

Tuesday, September 17, 2013, 11:14 Target boat contains 5 Nb discs.  3 discs are wraps with 0.001" thin of Nb foil (99.8% pure), and 2 are wraps with 0.001" Ta foil (see attachment#1) Chamber has been pumped down over night.  Pressure is currently at 9.8e-7 Torr.  Heating instructions: Samples will be heated up to 800C.  TGHT will be ramped up accordingly. (Two thermocouples are wielded on the target container.) Once at the desired temperature; the samples will be heat for 4 hours before cooling down.  Tuesday, September 17, 2013, 14:37 Target temperature has reached to 800C at around 13:00 (see attachment#2) TGHT @ 230A/3.07V (local 233A/3.25V).  IG @ 1.06e-6 Torr.  The heater will be ramped down at ~17:00 at 2A/min.  Tuesday, September 17, 2013, 17:36 Target temp: T1 = 805C, T2=797.6C IG @ 9.4e-7 Torr. Cooling down initiated.   Wednesday, September 18, 2013, 11:34 TGHT at 0A.  Temp at 22C.  IG @ 5.8e-7 Torr. Venting chamber.

 Friday, September 20, 2013, 14:56

Target contains batch#3 sample wrapped with Nb foil. 

Chamber has been pumped down to 1.03e-6 Torr. 

Samples will be heated up to 1200C for 4 hours.  

 Friday, September 20, 2013, 16:54

TGHT at 450A, temp stabilizes at 1238C.

Will cool down at 20:30 tonight.

Friday, September 20, 2013, 20:40  

Samples has been heated for 4 hours at 1235C.  

Cooling down initiated. 

 Monday, September 23, 2013, 14:40

Chamber was vented.

Batch#3 process completed.