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.

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

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

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

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

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

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

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

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, 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

Wednesday, June 01, 2022, 08:39

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

IGP1 = 1.6 e-6 Torr

Good vacuum = 5e-2 Torr

Bad vacuum = 5e-1 Torr

Current ramp is 1A per 10s from 0A to 40A then continue 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)

Wednesday, June 01, 2022, 09:51

IGP1= 3.0e-4 Torr

TGHT = 120A, 1.0V

Start autoramp at 1A/10s to 420A

Wednesday, June 01, 2022, 10:02

Increased ramp rate to 3A/10 s as per SOP to 440 A then will slow down the ramp to observe pressure behavior.

Wednesday, June 01, 2022, 10:19

At 430 A, autoramp set to 1A/10s to 500A as pressure was increasing. 

Will observe behavior of pressure curve then leave for 4 hours

Wednesday, June 01, 2022, 11:04

Pressure started dropping at 520A.  Stopped ramping and will leave for 4 hours.

Wednesday, June 01, 2022, 14:48

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

Wednesday, June 01, 2022, 23:00

IGP1= 2.1e-6 Torr

TGHT= 400A

Ramping down @-2A/min to 0A

Thursday, June 02, 2022, 10:09

IGP1= 6.7e-7 Torr

Ready to dismount

 Wednesday, May 04, 2022, 09:42

Yesterday, a second graphite cartridge was installed in EVAP1, it consists of the old, 3-body cartridge design, and was sanded on the outside to be able to fit a P2N container. 

First I tried ramping manually, but the heating tripped because pressure was too high.

Then the parameters were set as previously, but it tripped again

IGP1= 2e-5 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/10s to 500A

Autoramped up to 700A @ 1A/10s. 

Wednesday, May 04, 2022, 11:40

Another ramping trial, with different heating rate:

IGP1= 3e-5 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/20s to 700A

Autoramped up to 700A @ 1A/20s.  

Wednesday, May 04, 2022, 15:50

IGP1= 3e-2 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/20s to 730A

Autoramped up to 720A @ 1A/20s.  

Pressure dropping while current is increasing at autoramp rate.

Wednesday, May 04, 2022, 16:10

From 730A, once the pressure went down to ~1E-3T, the current was suddenly raised to 750A and 770A to see if significant pressure increase was noticed, but small bumps reaching 1.5E-3T were not considered a sign of further reduction.

The rampdown started from a pressure ~1E-3T, from 770A to zero with rate 2A/10s 

Wednesday, April 13, 2022, 10:50

P2NC-220323

Preparing the P2N-UCx for online operation on June 2022

Two cartridges were filled with annular UO2/C foils last week.

48 cartridges total

Today, Darwin and I are placing one of the two cartridges in the EVAP1. The cartridge is P2NC-220323.

Thursday, April 14, 2022, 09:34

Carbothermal reduction heating process started with a ramp rate of 3 A/min

Pressure 1.8E-6T

Thursday, April 14, 2022, 10:31

Paused autoramp because pressure increasing too rapidly. Will continue ramp up once pressure stabilizes.

Thursday, April 14, 2022, 11:20

autoramp restarted @3A/min

IGP1=2.7E-4 Torr

Thursday, April 14, 2022, 13:24

After first major outgass finished and pressure trending down, increased autoramp to 5A/min to 600A

Thursday, April 14, 2022, 13:27

IGP1 = 3.3E-4A

TGHT = 600A, 2.5V

decrease ramp rate to 3A/min to 650A

Thursday, April 14, 2022, 13:45

Set autoramp to 670A

Thursday, April 14, 2022, 13:52

paused autoramp at 668A because pressure increase too steep. 

Changed ramp rate to 0.5A/min and restarted ramp up to 700A

Thursday, April 14, 2022, 15:20

Continued increase in current towards 700A while pressure decrease indicated completeness of reduction.

Started rampdown to 650A.

Pressure was 1.7E-4 Torr on IGP1

Friday, April 15, 2022, 06:28  

The current was reduced to 500A @ 3:50 PM yestesterday.

Currently, TGHT = 500A, 2.0V

started aurtoramp down @ -2A/min

IGP1= 2.4E-6 Torr

Monday, May 02, 2022, 12:32

Cartridge reloaded onto EVAP 1. Will heat back up to check carbothermal reduction. 

Tuesday, May 03, 2022, 08:40

IGP1= 1.32e-6 Torr

Good vacuum 1e-1 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/10s to 500A

Autoramped up to 750A @ 1A/10s.  Only slight pressure increases observed areound 150A and 650A to 700 A.  Parameter curves will be evaluated.

Tuesday, May 03, 2022, 11:11

Started rampdown at -1A/10s. 

IGP1 was 3.0e-5 Torr and trending down when rampdown started

Wednesday, November 24, 2021, 10:38

A first, short "FullTa1" target was loaded into the evap1. It consists of a short container (10 cm) with lateral thickness of ~0.2mm. The ends of the target connect with the TGHT terminals through two copper adapters.

After pumpdown down to ~4E-5 T, the TGHT was ramped gradually to 200 A in the next ~5 mins, leaving the target at 200 A for about 10 mins. Then, the current was increased fastly to 450 A in about 30 seconds, and was left at 450 A for a minute. 

Note: the one minute at 450 A started when the TGHT voltage drop across stabilized, considered a sign of temperature homogeneity across the target container

Wednesday, November 24, 2021, 14:34

The second short container "FullTa2" target has been loaded and heated, following the same procedure as above. In this case, the initial pumpdown went to a lower pressure (1.5E-5 T instead of ~4E-5 T) resulting in lower pressure throughout the whole procedure

 Friday, November 05, 2021, 13:23

Full target loaded with ~500 non-active foils plus 4 active foils.  

Initial pressure when heating: 1.6E-5 T 

Manually went to:

TGHT=125 A 

TBHT=50 A

with increments of 5 A each. Pressure has little spikes but mostly unchanged (going down, actually).

Stayed at those values for 2 min 

Friday, November 05, 2021, 13:37 

Manually went to

TGHT=180 A 

TBHT=80 A

maximum pressure 6.6e-5 Torr

Friday, November 05, 2021, 13:43

IGP1 =  2.45e-5 Torr

We are aiming at going to TGHT=580 A and TBHT=230 A in increments of 50 A each and leave it there for a total of 5 minutes after nominal parameters are reached 

Friday, November 05, 2021, 13:55

IGP1 =  1.7e-5 Torr

Heating done, we stayed at 530A for a bit long (~15 sec) during the heating so the total heat time at 580A was interrupted at 4 mins 50 seconds instead of 5 mins. All good, max pressure during the heating was 0.013 T.

 Friday, September 24, 2021, 15:38

Full target loaded with ~500 non-active foils plus 4 active foils.  

Initial pressure when heating: 6.6E-5 T 

Manually went to:

TGHT=125 A 

TBHT=50 A

with increments of 5 A each. Pressure has little spikes but mostly unchanged (going down, actually).

Friday, September 24, 2021, 15:42

Manually went to

TGHT=180 A 

TBHT=80 A

Pressure going up steadily, max pressure <2E-4

Friday, September 24, 2021, 16:48

From TGHT=180 A, TBHT=80 A we are aiming at going to TGHT=580 A and TBHT=230 A in increments of 50 A each and leave it there for a total of 5 minutes after nominal parameters are reached. Initial pressure 1.3E-5 T.

Friday, September 24, 2021, 17:01

Fast rampup done, we were up there in 30 seconds.

TGHT VOL = 6.6 V

TBHT VOL = 3 V

Max pressure 2E-3 T. Both TGHT and TBHT were shut off abruptly on purpose. 

 Thursday, September 23, 2021, 06:55

A loaded graphite cartridge was set in a tantalum boated and wrapped with 3 tantalum sheets (Wednesday September 22)

IGP1 = 3.6 e-5 Torr

Good vacuum = 5e-2 Torr

Bad vacuum = 5e-1 Torr

Current ramp is 2A per min from 0A to 120A and 1A/10s from 120A to (450-550A)

Thursday, September 23, 2021, 07:09 

IGP1 = 1.84 e-06 Torr

Start Autoramp to 120A @ 2A/min 

Thursday, September 23, 2021, 10:25

Start Autoramp to 550A @ 1A/10s

 IGP1= 1.05e-05 Torr

TGHT= 120 A, 1.06 V

Thursday, September 23, 2021, 11:57 

Pressure drop observed at 530A.  Start 4 hour count.  

Thursday, September 23, 2021, 15:57 

IGP1= 9.1e-06 Torr

After 4 hour reduction started rampdown to 400A at 2A/30s.

8 hour conditioning to start at 16:15 pm

Friday, September 24, 2021, 00:16

TGHT= 399.8 A, 3.5V

IGP1= 2.4 e-06 Torr 

Start ramp down at 2A/min

Wednesday, September 14, 2021, 21:14

Boat is wrapped with 2 layers of Ta-heat shield

The samples consists of 15 discs of UCx of 14mm diameter

The chamber is currently pumping down.

TGHT will be ramped up to 450 A

Wednesday, September 15, 2021, 07:17

IGP1 = 6.75e-6 Torr

Tapped up manually to 40A.

TGHT = 60 A, 2.39 V

Vacuum stable IG1 = 7.25e-6 Torr

Initiating auto-ramp for TGHT at a rate of 0.2A/min to 445 A

Parameter setup: 5.0e-5 good vac, 8.0e-5 bad vac.

 Wednesday, September 15, 2021, 11:57

IGP1=2.24e-5 Torr

TGHT= 102.016 A, 1.275 V

Autoramp changed to 1A/min to 450 A

Wednesday, September 15, 2021, 12:53

IGP1 = 3.3e-5 torr

TGHT= 150 A,  V

Autoramp changed to 2A/30s to 450 A

 1e-1 good vac, 5e-1 bad vac

Wednesday, September 15, 2021, 12:59

Friday, September 17, 2021, 07:54

IGP1 = 3.81e-6 Torr

TGHT = 449.6 A, 4.31 V

Autoramp set to -2A/min to 0 A 

 Wednesday, July 07, 2021, 14:39

Target Provisional ID = 200929 was installed in the EVAP1 and pumped down (Tuesday July 7, 2021).

Target is going to be thermally reduced for 8 hours and then conditioned for an additional 8 hours

IGP1 = 2.0 e-6 Torr

Good vacuum = 1e-1 Torr

Bad vacuum = 5e-1 Torr

Power desired 1.6kW.

10 extra discs included for analysis

Wednesday, July 07, 2021, 14:49 

Ramping up TGHT at 6A/min [wait interval = 10 s at increments of 1A]

Wednesday, July 07, 2021, 15:58

IGP1= 5.7 e-5 Torr and trending down.  Will start ramp up to 450A at  18A/min [wait interval 10s at 3A increments]

Wednesday, July 07, 2021, 16:20 

IGP1= 2.2e-3 Torr

Will continue ramping TGHT to 500A and watch pressure

Wednesday, July 07, 2021, 16:26

Continue ramping to 550 at 3A/10s

 Wednesday, July 07, 2021, 16:29

holding at 550A, 5.1V for 8 hours 

Wednesday, July 07, 2021, 23:41 

TGHT = 550A, 5.7 V

begin ramp down at -2A/min to 450A and leave for 8 hours

Thursday, July 08, 2021, 08:20

 IGP1= 2.7 e-06 Torr

TGHT = 450A, 4.5V

Will start ramp down at -2A/min to 0A 

Target #34 was installed in the EVAP1 and pumped down (Tuesday June 29, 2021).

Target #34 is going to be conditioned on a Ta boat wrapped with 3 Ta foils.

IGP1 = 1.85e-6 Torr

Good vacuum = 1e-1 Torr

Bad vacuum = 5e-1 Torr

Power desired 1.6kW. This is the second target conditioned this way. 

Subsequent targets should be conditioned following thermal reduction.

 Thursday, July 01, 2021, 06:05

IGP1= 1.35e-06 Torr

Start autoramp @2A/30s to 400A

Thursday, July 01, 2021, 07:59

Pressure increase was observed near 400A 

will ramp to 450A and  keep for 8 hours

IGP1= 1.4 e-05 Torr

450A and 4.0V reached at 8:14 am on Thursday July 01, 2021

Rampdown @-2A/min was started at 4.14 pm on Thursday July 01, 2021 IGP1 stable at 2.7e-06Torr

Cannot transfer into glovebox yet because moisture is a bit high after regeneration.  Moisture is dropping. Will wait until moisture is sufficiently low.

Monday, July 05, 2021, 20:43

Cartridge was removed and placed in bag inside glovebox

Removed 10 discs for analysis but might place them back inside depending on final decision.  We had previously removed 10 discs after thermal reduction.