Friday, June 03, 2022, 06:24

A loaded graphite cartridge was set in a tantalum boated and wrapped with 3 tantalum sheets (previous day)

IGP1 = 1.4 e-6 Torr

Good vacuum = 5e-2 Torr

Bad vacuum = 5e-1 Torr

Current ramp is 1A per 10s from 0A  to 80A at 1A/10s.  Then at 1A/min to 120 A, allow degas and then autoramp 1A/10s from 120A to (450-550A)

Friday, June 03, 2022, 06:52

starting autoramp at 1A/min to 120A

Friday, June 03, 2022, 07:30

note*: At approximately 108A the pressure did not rise again but was stable.

Friday, June 03, 2022, 07:46

started autoramp at 1A/10s to 450A 

Friday, June 03, 2022, 09:29

start autoramp to 500A at 1A/min

Friday, June 03, 2022, 09:40

pressure keeps stable as ramping continues. 

increased ramp rate to 2A/min

Friday, June 03, 2022, 09:56

Drop in pressure observed as current increased at 2A/min.

Final current is 490A.  Will keep at this current for 4 hours. 

Friday, June 03, 2022, 14:05

Start auroramp to 400A at -2A/30s

will keep at 400A for 8 hours

Friday, June 03, 2022, 22:06

Start autoramp down at -2A/min to 0A

IGP1= 1.6e-06 Torr

TGHT= 400A, 3.6 V

Tuesday, June 07, 2022, 07:05

A loaded graphite cartridge was set in a tantalum boated and wrapped with 3 tantalum sheets (previous day)

IGP1 = 1.2 e-6 Torr

Good vacuum = 5e-2 Torr

Bad vacuum = 5e-1 Torr

Current ramp is 1A per 10s from 0A to 80A at 1A/10s.  Then at 1A/min to 120 A and allow degas and then autoramp 1A/10s from 120A to (450-550A)

Tuesday, June 07, 2022, 08:28

IGP1=9.8e-5 Torr

TGHT = 120A, 0.85V

Start autoramp at 1A/10s to 420A

Tuesday, June 07, 2022, 08:45

Increased ramp rate to 3A/10 s as per SOP to 450 A then will slow down the ramp to observe pressure behavior.

Tuesday, June 07, 2022, 09:04

slowed autoramp to 2A/min to observe (1A/30s)

some erratic pressure oscillations observed then stabilized. 

Tuesday, June 07, 2022, 09:32

At TGHT = 495A pressure started dropping even while current ramping up.  Stopped ramp.  Will keep for 4 hours.

TGHT = 495.6A, 4.7V

Tuesday, June 07, 2022, 13:30

TGHT = 495.6 A, 4.7V

IGP1= 8.5 e-6 Torr

Start rampdown to 400A at 2A/30s and leave for 8 hour treatment

Friday, October 07, 2022, 07:55

Cartridge-220928UCx was installed in the EVAP1 and pumped down yesterday.

Material will be reduced in LP-SIS wrapped with 3 Ta foils.

IGP1 = 2.1e-6 Torr

a cap was installed to collect material coming out from the ionizer tube

The initial weight of the cap 1 + small bag was recorded to be: 2.82 g   Final weight of cap1 + small bag = 2.84g (see attached picture)

Good vacuum = 5e-4 Torr

Bad vacuum = 5e-2 Torr

Power desired 1900W as approximate power used online. 

Will autoramp @2A/min to 30A, then slow down ramp to 1A/min to 120A.

After first pressure bump cleared, will ramp up to 400 A @ 2A/20s to 425A on TGHT.  TBHT will be topped off at 230A. 

from 425A, TGHT will be ramped at 1A/min and monitored for pressure behaeviour. 

sytem will be left at reduction current for 4 hours.  Then, the current will be dropped to 1900W and allow to run for 8 hours.

The cup will be collected and the system will be run again in increments of two hours. 

*slight change from test plan to save time*

Friday, October 07, 2022, 21:55

A true pressure max was not observed.  A max while current still rising.  stopped at 560A on TGHT and 5.3V

will leave at the above conditions for 4 hours.

Suspect that the thinner Ta shields make a difference.  Suggest to add a fourth shield and process the previous cartridge in a tube rather than a boat.  Treat for four hours (pressure max) and then test increasing the current to see if there is a pressure bump.  If no pressure bump then lower current to deposit 1900W for 8 additional hours. 

After 4 hours at max current, the current was dropped to 450A (TGHT) and left for 8 hours.

Saturday, October 08, 2022, 09:26

start autoramp down @-2A/min for TGHT and -1A/min for TBHT

Cap+ bag = 2.82 g

final cap +bag = 2.84 g

Tuesday, October 11, 2022, 10:15

Today will switch end-cup.  Will weigh new end-cup and place inside the evap1 glovebox.  Then will remove used end-cap and install new end-cap.  Used end-cup will be weighed on same balance as before.  All mass measurements will be done with the same balance. Note, that a makeshift balance air isolation container was built to allow balance to not be affected by air currents.

 Cap 2+bag initial weight = 2.80 g +/- 0.01 g

Cap 2+bag final weight = 2.81g +/- 0.01 g

No visible deposition on cap

Wednesday, October 12, 2022, 07:51

Start ramp up at 2A/min.  TGHT to 450A, TBHT to 230A

IGP1= 6.7e-07Torr

Wednesday, October 12, 2022, 09:47

Ramping up @ 4A/min to same final settings: TGHT = 450A and TBHT = 230A

Wednesday, October 12, 2022, 11:15

@10:45am 450A, 4.15V were reached on TGHT

Will leave for 2 hours at 450A then ramp down, then switch cap. 

Monday, October 17, 2022, 09:40

The second cap was taken out over the weekend  (attachment number 2).

The final weight of this cap with bag = 2.81 +/- 0.01 g

Installed a nex cap (3) with initial weigh of cap +bag = 2.74 g

Allowed vacuum to settle over Sunday and will start ramping today

Will ramp to 470 A and hold for 2 hours.  Ramp rate  2A /30s

IGP1= 4.6e-07 Torr

 Monday, October 17, 2022, 11:39

ramping with no issues.  will finish ramp around 12:03 pm and will start rampdown @ around 2:05 pm.

Monday, October 17, 2022, 12:03

TGHT= 470A, 4.5V

TBHT= 228A, 2.9V

IGP1= 5.6e-06 Torr

Monday, October 17, 2022, 14:05

Start rampdown at 2A/min TGHT and 1A/min TBHT to zero amp

current IGP1= 2.6e-06 Torr

TGHT = 470A, 4.5V

TBHT= 228.3A, 2.9V

Tuesday, October 18, 2022, 09:39

IGP1=4.4e-7 Torr

ready to dismount

Tuesday, October 18, 2022, 13:50

Cap 3 + bag initial weight = 2.74 g

Final weight of cap+bag = 2.74 g (no change)

no visible deposition on cap either

Wednesday, October 19, 2022, 10:27

Cartridge-220510Cx was installed in the EVAP1 and pumped down yesterday.

Material will be further conditioned at 450A for 4 hours.

The material will be conditioned inside a container tube with both ends open at the ends.  Two springs are inserted at the ends of the graphite cartridge to contain the material as graphite caps not inserted.

IGP1 = 7.8e-07 Torr

Good vacuum = 5e-4 Torr

Bad vacuum = 5e-2 Torr

Will autoramp @2A/30s (4A/min) to 40 A and then to 120A.  Fast ramp rate because material had previously been conditioned

Wednesday, October 19, 2022, 12:23

TGHT 450A, 5.2 V

Will leave for 4 hours and then begin ramp-down.

Wednesday, October 19, 2022, 16:21

IGP1= 3.1e-06Torr

450A, 5.2V

Start rampdown @- 2A/min

Thursday, October 20, 2022, 09:23

IGP1= 4.6e-7 Torr

Monday, November 28, 2022, 05:58

Left weekend to pump down

current IGPI= 7.23e-7 Torr

Material will be reduced in LP-SIS wrapped with 3 Ta foils.

a cap was installed to collect material coming out from the ionizer tube

Initial weight of target material plus cartridge was recorded

All relevant data and findings will be reported and added to docushare as document :

Good vacuum = 5e-4 Torr

Bad vacuum = 5e-2 Torr

Power desired 1900W as approximate power used online. 

Will autoramp @2A/min to 30A, then slow down ramp to 1A/min to 120A.

After first pressure bump cleared, will ramp up to 400 A @ 2A/20s to 425A on TGHT.  TBHT will be topped off at 230A. 

from 425A, TGHT will be ramped at 1A/min and monitored for pressure behaeviour. 

sytem will be left at reduction current for 4 hours.  Then, the current will be dropped to 425 A and allow to run for 8 hours.

The cup will be collected and the system will be run again for two hours. at the same current until no material visible on cap.  Then it will be run at 450A for increments of two hours until no significant mass change of target material.

Monday, November 28, 2022, 06:05

started initial heating to 30A at 2A/min on both TGHT and TBHT.

Monday, November 28, 2022, 08:46

was ramping at 6A/min (2A/20s) on both tGHT and TBHT but aborted due to pressure spike.  will allow pressure to stabilize.

TGHT = 162A, 1.35V

TBH 162A, 1.9V

Monday, November 28, 2022, 08:51

Restarting the heating at 6A/min (2A/20s)

Monday, November 28, 2022, 09:21

Pausing heating @ TGHT= 323 A 3.0V

Allow pressure to stabilize to better spot reduction current

Monday, November 28, 2022, 09:49

Started heating TGHT at 2A/min so reduction current can be better resolved

Monday, November 28, 2022, 10:12

heating aborted to allow pressure to stabilize

IGP1> 5.0e-4 Torr

Monday, November 28, 2022, 11:31

IGP1= 1.5e-4 Torr start autoramp TGHT @1A/min

Monday, November 28, 2022, 11:51

paused heating.  Second peak has been passed.  Will let pressure drop before starting heating again to try and better observe reduction peak.

Monday, November 28, 2022, 12:46

start autoramp at 2A/min from 389A on TGHT

IGP1- 6.4e-6 Torr

Monday, November 28, 2022, 14:21

Pressure starts to drop at around 535A, but large bump observed around 386A. 

Will leave four hours. 

TGHT= 539A, 4.98V

TBHT= 229A, 2.9V

Monday, November 28, 2022, 18:19

Ramping down at 4A/min to 425A

Currently IGP1= 6.2e-6 Torr

TGHT = 539A, 4.98 V

TBHT= 230A, 2.98V

Monday, November 28, 2022, 22:23

425 A on TGHT reached at 6:50 pm.  Will ramp down at 2:50 am .  -2A/min TGHT and -1A/min TBHT

Tuesday, November 29, 2022, 09:34

Final IGP1 when TGHT and TBHT = 0A  is 5.0e-7 Torr

Tuesday, November 29, 2022, 14:08

Weighed materials and reloaded

Currently at 1.1 e-05 Torr

Will initiate heat ramp at 2A/min to 425 A

@241A increase ramp rate to 4A/min on TGHT

Wednesday, November 30, 2022, 12:44

heating B finished and cartridge loading for heating C

Current pressure = 2.09 E-05 Torr.  Will ramp up to 450A at 4A/min and regulate as needed.

Will heat at 450A TGHT for 2 hours, TBHT max= 230A

Wednesday, November 30, 2022, 16:30

Starting rampdown @-2A/min TGHT and -1A/min TBHT

Final heating was @ 450A, 4.0V TGHT and 230A, 2.7V TBHT

Friday, December 02, 2022, 09:00

IGP1= 7.2 e-07 Torr

Starting ramp at 2A/min to 450A on TGHT and 230A on TBHT

Friday, December 02, 2022, 10:02

pressure stated dropping.  Will increase ramp to 4A/min (2A/30s)

Friday, December 02, 2022, 15:35

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

IGP1= 2.6 e-06 Torr

TGHT 450A   4.2V

TBHT  230A  2.9V

Monday, December 19, 2022, 10:38

Cartridge with 175 discs (including 5 analysis discs) loaded into a graphite cartridge. 

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields

Will keep at reducing current for 4 hours and then 10 hours @ 425A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure was 6.36 e-07 Torr

Autoramped to 56A @ 1A/30s

Outgassing bump observed starting at 50A and at 56A the maximum pressure was ~1.9e-05 Torr

Monday, December 19, 2022, 10:47

started autoramping at 1A/30s to 90A

Monday, December 19, 2022, 10:50

observed that pressure not increasing radically, therefore ramping up faster.  2A/30s

Monday, December 19, 2022, 10:58

Second pressure bump observed at 90A, 1.0V

leaving at this current until pressure drops

Monday, December 19, 2022, 17:15

ramped to 280A and left at 280 until pressure started dropping

ramping again to 500A @ 2A/30s

Monday, December 19, 2022, 17:26

Stopped at 330A due to pressure hike.  Will allow pressure to drop then continue ramp.

Monday, December 19, 2022, 18:00

restarting ramp @ 2A/30s

Monday, December 19, 2022, 18:11

Pressure started dropping around 350A corresponding to additive gas-off.  Will rampt to 500A @ 2A/30 seconds and then at 1A/30s to 530A

Final current was 548A, 6.7 V.  Will test increasing current after 4 hours (11 pm)

Monday, December 19, 2022, 23:10

ramping down @ 2A/min to 425A .  should be done by 12:00 am and cooling at9:00 am (includes 1 hour ramp down to 425).

Ramping down to zero @ -2A/min

Wednesday, December 21, 2022, 10:47

Final IGP1= 3.7e-07 Torr

Thursday, January 19, 2023, 09:57

Cartridge #8 loaded with 198 discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 10 hours @ 425A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 1.41e-06 Torr

Thursday, January 19, 2023, 10:02 Auto ramping to 120A @ 1A/min

Thursday, January 19, 2023, 18:58

Autoramping to  300A @ 4/min (2A/30s)

IGP1=3.34e-06 Torr

Friday, January 20, 2023, 07:37

left at 300 A for 8 hours and pressure dropped.  Restarted autoramp at 2A/30s and pressure was increasing until 425A where it peaked.  Reduced autoramp to 1A/min and observed slow but definite pressure drop.  Will go to 450A and leave there for 4 hours. 

Currently 440A, 5.3V on TGHT and 1.28e-05 Torr on IGP1

Friday, January 20, 2023, 12:06

After 4 hours at 450A IGP1= 3.49e-06 Torr

TGHT = 450A 5.4V

Will drop to 425A and leave for 10 hours

Friday, January 20, 2023, 21:53

TGHT 425A, 5.2V

IGP1= 1.81e-06 Torr

autoramping to 0 A @ -2A/min

Wednesday, March 22, 2023, 22:29

Cartridge #9 loaded with 213 plus 3 analysi discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 3.71e-06 Torr

Wednesday, March 22, 2023, 22:33

Autoramping to 400A @ 1A/min

Thursday, March 23, 2023, 06:57

Starting heating at 2A/min

Currently at 400A and 4.5V

IGP1= 9.6e-06 Torr

At around 500A, the reduction was observed.  Current manually increased to 508 A and left there for remainder of four hours.  4 hours will be done at 1210 pm, then will ramp down to 450 and 8 hours

Thursday, March 23, 2023, 12:01

IGP1= 7.6 e-06 Torr

508 A, 6.0 V TGHT

Start rampdown to 450 @ -2A/min

Thursday, March 23, 2023, 20:27

IGP1= 2.36e-06 Torr

TGHT = 452A, 5.3A

Starting ramp down @-2A/min

Wednesday, October 11, 2023, 9:36

Cartridge #10 loaded with 213 plus 3 analysi discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 2.4 e-06 Torr

 Wednesday, October 11, 2023, 10:56

Starting heat ramp at 2A/min to 60A

First pressure bump observed at 60A

Allowing pressure to restabilize

Wednesday, October 11, 2023, 13:12

IGP1=2.6 e-5 Torr

continuing to heat at 2A/min

Wednesday, October 11, 2023, 13:35

another pressure bump observed around 90A (should go slowly in these current range).  Aborted ramp, waiting for pressure to stabilize.

pressure rose to around 2.5e-02 Torr (close to our bad pressure)

Wednesday, October 11, 2023, 13:52

IGP1=5.4e-04 Torr Start ramp at 2A/min

Wednesday, October 11, 2023, 17:53

Pressure has started to drop so increased ramp to 4A/min

 Wednesday, October 11, 2023, 18:18

 Second small pressure bump observed at 482A and 5.0 V.  Pressure falling.  Will leave at 500A for 4 hours . 

 Wednesday, October 11, 2023, 22:00

IGP1= 8.0 e-06 Torr

TGHT=500A, 5.2V

Initiate rampdown to 450A and will leave there for 8 hours

Thursday, October 12, 2023, 07:02

Initiate rampdown to zero.  IGP1=3.21e-06 Torr

TGHT= 450A, 4.6V

 Tuesday, April 09, 2024, 14:42

Cartridge #16 loaded with 213 plus 3 analysi discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 2.4 e-06 Torr

Tuesday, April 09, 2024, 14:42

Start ramp @2A/min to 120A then wait for pressure drop to continue.

Tuesday, April 09, 2024, 16:51

Set ramp to 2A/30s to 480A

Wednesday, April 10, 2024, 00:02

Ramping down to 450 A

Thursday, April 11, 2024, 09:56

Cool down Wednesday morning

Will be left under vacuum in EVAP1 due to hotlab closure.

Thursday, September 12, 2024, 06:19

Cartridge #19 loaded with 232 discs including 5 analysis discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 3.12 e-06 Torr

Thursday, September 12, 2024, 06:20

Starting step one in ramping

Thursday, September 12, 2024, 09:12  

Pressure lowered after passing outgas peak. 

IGP1= 2.5e-05 Torr

will continue with step 2 of ramping

 Thursday, September 12, 2024, 14:46

At 115A outgas peak observed and current ramped down from 120A t 115A.  Allowing pressure to drop before continuing ramp.

Roughing pump issue.  Cooling, turning pumps off until vacuum group can take a look.

Friday, September 13, 2024, 14:39

Roughing pump seems ok.  Restarting ramp at 1A/min to 115A

Friday, September 13, 2024, 17:38

Starting ramp up at 2A/min to 520A (will monitor pump and outgassing)

Saturday, September 14, 2024, 07:44

inflection point at aroung 450A

Saturday, September 14, 2024, 07:48

pressure started dropping at 466A, but some sporadic peaks observed.  Will heat to 488A and leave for 4 hours

Saturday, September 14, 2024, 20:23  

 ramping down after 8 hour conditioning

IGP1= 2.45e-06 Torr

Tuesday, September 17, 2024, 06:45

Cartridge #20 loaded with 224 discs plus 3 analysis discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 1.5 e-06 Torr

Tuesday, September 17, 2024, 06:47

Starting initial ramp @ 2A/min to 60A

Tuesday, September 17, 2024, 10:05

Started ramp at 1A/min to 90A

Wednesday, September 18, 2024, 07:05

Reduction at 480A held for 4 hours then 8 hours at 450A

Tested by increasing 10A and significant increase in pressure observed (no real peak). 

Started rampdown at -2Amin

Thursday, September 19, 2024, 22:44

Cartridge #21 loaded with 211 discs including 3 analysis discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 1.6 e-06 Torr

Friday, September 20, 2024, 08:47

ramped to 300 A and allowed pressure to drop. Pressure stable around 5.0 e-5 Torr.  Will continue ramp at 2A/min

Friday, September 20, 2024, 12:30

At 500A the pressure stops rising.  Will leave for 4 hours. 

Tuesday, September 24, 2024, 15:46

reduced for 4 hours then ramped down to 450A at -2A/min

After 8 hours ramped down to zero A at -2A/min

Tuesday, January 14, 2025, 16:26

Cartridge #22 loaded with 211 discs including 3 analysis discs

To be reduced inside a Ta container tube.  Tube wrapped in 3 Ta foil heatshields.

Reduction for 4 hours and then 8 hours @ 450A (see docushare 177267)

Good Vacuum: 5.0e-04 Torr

Bad Vacuum: 5.0e-02 Torr

Initial pressure is 1.6 e-06 Torr

Tuesday, January 14, 2025, 16:27

Left system to pump down earlier in the day. 

Wednesday, January 15, 2025, 10:23

Earlier started initial ramp to 60A at 2A/min

Initial pressure IGP1 was 2.65e-06 Torr

Pressure stable now at 2.40e-5 Torr

Starting ramp to 90 A at 1A/min

Tuesday, August 30, 2011, 09:29: Target Boat wrapped with 3 Ta heat shields. 6 D-End Caps and 6 End Caps coated with TaC. Pumping down - vac at 3.6e-5 torr.

Tuesday, August 30, 2011, 10:35: Stepped heater up to 100 A. Vacuum tripped heater. Stepped back up to 80 A then 70 A. Vac at 4.5e-5 torr.

Tuesday, August 30, 2011, 14:30: Manually increased heater to 580 A. Vac is 2.5e-5 torr. Local reading is 561 A for 570 A and 570 A for 580 A set points.

Tuesday, August 30, 2011, 15:57: Manually decreased heater in 12 min to 0 A from 460 A  vac starting at 6.3e-6 torr.

2011-09-01:

• Glove box was leaking (air/argon) between base and box. Light was shining through.
• Removed old neoprene seal at base.
• Resealed glove box between base and box with DAP Butylflex. No light shining through after repair.
• Replaced rubber disks at 4 feed-throughs.
• Maico Dalla Valle replaced the inner ring on the glove ports. See dwg ITA2954 and ECO-2418.
• After the repair, the glove box has a significantly reduced leak, estimated to a few liters per minute at an air pressure of  0.5" H₂O.

Evaporator drawings can be found on ITA2900D

Work Permit: 2011-09-01-2 

Work covered under work permit 2013-11-01-3 and performed by Anders and Rick with the help of Danno (RPG).

No significant contamination was found during the work. The old window could be disposed as normal waste.

The right connector for the TGHT had rotated. It has now been repositioned and both connectors have been tightened to reduce the chance for further rotation.

The conductivity of the TGHT circuit will be measured with a copper bar shunt.

Monday, December 02, 2013, 16:00: Pumping down. 

Tuesday, December 03, 2013, 09:40: Stepped current up to 600A. Impedance of system ~0.7 mOhm. See attached graph for P(I).

Tuesday, December 03, 2013, 12:06: Stopped turbo. Vacuum at 1.3E-5 Torr

Wednesday, December 04, 2013, 09:20: Copper bar removed from vacuum chamber.

Test finished.

Saturday, August 29, 2015, 16:10: Roughing

Saturday, August 29, 2015, 16:10: Starting turbo

Saturday, August 29, 2015, 16:12: Turbo running. IG1 at 2.4E-4 T