Wednesday, May 01, 2024, 11:53

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =8.1 e-06 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~500A (adjustable)

Heating autoramp starged at 3A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Wednesday, May 01, 2024, 22:19

1830C reached at 670A. 10.0V TGHT

Start cooling after 4 hours. 

 Monday, April 29, 2024, 19:50

Started coating with coating stand.

The coated container was wrapped in 3 Ta foil heatshields.

Vacuum IGP1 initial =9.1 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~700A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =700 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Monday, April 29, 2024, 20:25

Reached 1810 @700A

Will leave until 1230am

Thursday, April 04, 2024, 12:06

Ta container tube, wrapped in 4 Ta foil heat-shields, and loaded with _________ D shaped discs in a 12mm graphite cartridge with usable 11mm

conditioning tube WO = 44692-13 (4th conditioning with this tube)

End-caps on the graphite cartridge have holes for outgassing.  One spring each end in the Ta container

initial heating @ 2A/min to 85 A then 2A/min to 120A TGHT

OMEGA slope = 0.99

Vacuum limits up to 400A: 5.0e-04 Torr -- 1.0e-02 Torr

Mas current~400A (1900 C)

Friday, April 05, 2024, 09:04  

Ramping to 85A done and pressure trending down.  Will continue ramp to 120A

Friday, April 05, 2024, 16:01

Starting rampdown at -2A/min

IGP1= 3.2e-06 Torr

Wednesday, April 03, 2024, 06:46

Ta container tube, wrapped in 4 Ta foil heat-shields, and loaded with _________ D shaped discs in a 12mm graphite cartridge with usable 11mm

conditioning tube WO = 44692-13

End-caps on the graphite cartridge have holes for outgassing.  One spring each end in the Ta container

initial heating @ 2A/min to 85 A then 2A/min to 120A TGHT

OMEGA slope = 0.99

Vacuum limits up to 400A: 5.0e-04 Torr -- 1.0e-02 Torr

Wednesday, April 03, 2024, 06:49

initial IGP1= 1.28e-06 Torr

Wednesday, April 03, 2024, 09:26

IGP1= 2.3e-05 Torr

TGHT = 78 A, 1.3V

Will continue ramp as planned.

Wednesday, April 03, 2024, 11:37

Ramping at 2A./min to 400A

Wednesday, April 03, 2024, 14:01

expected 1900C at 401A

leaving at 402A for 4 hours.  Rampdown start at 4:10 pm at -2A/min

Thursday, February 29, 2024, 07:40

Ta container tube, wrapped in 4 Ta foil heat-shields, and loaded with _________ D shaped discs in a 12mm graphite cartridge with usable 11mm

conditioning tube WO = 44692-13

End-caps on the graphite cartridge have holes for outgassing.  One spring each end in the Ta container

initial heating @ 2A/min to 85 A then 2A/min to 120A TGHT

OMEGA slope = 0.99

Vacuum limits up to 400A: 5.0e-04 Torr -- 1.0e-02 Torr

Thursday, February 29, 2024, 07:43

Initial IGP1=  9.31e-7 Torr

Thursday, February 29, 2024, 17:43

Temperature profile suggests 1900 C at 400A.  Now at 400A.  Will keep at this current for 4 hours.

manually ramped the last few amps.

TGHT= 400A, 7.3 V OMEGA = 1901C

Thursday, February 29, 2024, 22:20

IGP1=2.1e-6 Torr

started ramping down at -2A/min

Wednesday, February 21, 2024, 06:22

Ta container tube, wrapped in 4 Ta foil heat-shields, and loaded with 201 D shaped discs in a 12mm graphite cartridge with usable 11mm

conditioning tube WO = 44692-13

End-caps on the graphite cartridge have holes for outgassing.  One spring each end in the Ta container

initial heating @ 2A/min to 90 A then 1A/min to 120A TGHT

OMEGA slope = 0.99

Vacuum limits up to 400A: 5.0e-04 Torr -- 1.0e-02 Torr

Wednesday, February 21, 2024, 09:12

IGP1 initial = 9e-07 Torr

Starte at 3A/min to 90A

Wednesday, February 21, 2024, 09:21

increased autoramp to 4 A/min until pressure starts rising, then will slow down or pause

Wednesday, February 21, 2024, 09:32

At 74A, paused.  Will continue at 2A/min TGHT

Wednesday, February 21, 2024, 09:40

Pausing at 87A. 

Wednesday, February 21, 2024, 10:34

pressure dropping.  restarting ramp up to 120A at 2A/min

Wednesday, February 21, 2024, 10:37

From previous TiC 220206, will heat up fast until 250A and then at 1A/min until 300A to better resolve out-gassing profile

Wednesday, February 21, 2024, 12:05

Changed ramp to 1A/min to 300A

Wednesday, February 21, 2024, 13:10

Manually ramped up for a while

increased ramp speed to 2A/min

regression line started to match previous one after 1300C

Wednesday, February 21, 2024, 13:16

increased ramp rate to 4A/min to 420A

Wednesday, February 21, 2024, 13:37

Note: the temperature became unrealistic.  suspect window condensate.  Will use regression and to to 441A

Wednesday, February 21, 2024, 13:54

reached 441A, 7.6V

leaving for 3.5 hours or when pressure drops to 2-3 e-06 Torr

Wednesday, February 21, 2024, 18:56

IGP1=2.9e-06 Torr

starting rampdown at -2A/min

Wednesday, February 07, 2024, 22:36

Ta container tube TaC coated, wrapped in 4 Ta foil heat-shields, and loaded with 320 D shaped discs in a 12mm graphite cartridge with usable 11mm

Endcaps on the graphite cartridge have holes for outgassing

initial heating @ 2A/min to 90 A then 1A/min to 120A TGHT

OMEGA slope = 0.99

Vacuum limits up to 400A: 5.0e-04 Torr -- 1.0e-02 Torr

Thursday, February 08, 2024, 06:18

Starting heat ramp tght

initial pressure = 8.1e-07 Torr IGP1

Thursday, February 08, 2024, 06:54

start of gasoff observed. paused ramp and will continue at 1A/min

Thursday, February 08, 2024, 07:24

lowered TGHT current to 75 A as pressure increasing too rapidly.  will leave at this current until pressure drops

Thursday, February 08, 2024, 09:11

continuing ramp to 120A on TGHT

Thursday, February 08, 2024, 09:24

Increasing ramp to 2A/min to 250A on TGHT

Thursday, February 08, 2024, 10:52

Increased ramp to 3A/min to 250A on TGHT

Thursday, February 08, 2024, 11:10

Everything looks good will continue to 300 A at 3A/min TGHT

Thursday, February 08, 2024, 11:33

Pausing heating at 285A, 4.8V TGHT

OMEGA reads 1430C

Will let pressure drop and then proceed ramping slowly @ 0.2A/min

Thursday, February 08, 2024, 13:53

IGP1= 2.4e-06 Torr

OMEGA = 1432 C

ramp at 0.2A/min towards 1550C

Thursday, February 08, 2024, 14:07

pressure very stable.  will increase to 0.4 A/min

Thursday, February 08, 2024, 15:24

increasing ramp rate to 1A/min

IGP1 = 2.5e-06 Torr

Thursday, February 08, 2024, 18:05

1900 C on OMEGA

will leave 3-4 hours depending on pressure

Thursday, February 08, 2024, 21:10

No additional pressure peaks observed and pressure on IGP1=  1.9e-06 Torr

TGHT= 460 A, 8.1V

OMEGA= 1860 C

ramp down at -2A/min

Monday, January 29, 2024, 16:36

LP FEBIAD

wrapped in 4 Ta heatshields.

Will heat at 2A/min to 95A on TGHT and TBHT

Then will heat at 3A/min to 1800 C ~400A on TGHT and 230A on TBHT

Monday, January 29, 2024, 16:45

Initial IGP1= 5e-05 Torr

Monday, January 29, 2024, 20:35

1800C was at TGHT 410A, 6.9V  RD and set current 418A

TBHT= 233 RD A, 3.2V

Friday, January 26, 2024, 07:05

The coated container was wrapped in 4 Ta foil heatshield and left in evap2 over night to attain vacuum.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~700A (adjustable)

Heating autoramp starged at 1A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 5.7e-05 Torr

Friday, January 26, 2024, 09:20

Pressure starts increasing at 125 A on TGHT and TBHT.  Leaving it to equilibrate then will start ramping at 3A/min (1.5A/30s) to 700A on TGHT and 230A on TBHT

Friday, January 26, 2024, 13:18

leave sintering at 1838C .  Will start rampdown at 5 pm.

IGP1= 6.10e-06 Torr

TGHT=680A, 10.14V

TBHT = 230A, 3.13V

Friday, January 26, 2024, 16:52

IGP1 = 3.0e10-6 Torr

OMEGA=1821 C

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

Thursday, December 14, 2023, 09:53

Target left pumping down in Evap2 overnight. 

Initial weight including protective jig = 1474.3 g

Total number of target foils:388 

 10 analysis discs: 5x 220727-2 labelled as A and 5x 231123-2 labelled as B on the right side (front) of container.  Order of discs ABABABABAB.

Total length packed 15.5 cm

container has 3 Ta heat shields including the inner made of three pieces as to cover the center block.

No endcaps inserted to facilitate out-gassing

Ta coated spring at  both ends

ramp to 500A @ 1A/min TGHT and to 230A on TBHT

max approx 700A 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 5.00 e -4 Torr

Bad vac at 5.00 e-2 Torr

 IGP1= 9.3e-07 Torr at start of initial ramp.

Thursday, December 14, 2023, 09:56

Started initial ramp up 1A/min on both heaters

Thursday, December 14, 2023, 11:03

Pressure dropping.  Will increase ramp speed to 2A/min on both heaters (1A/30s)

Thursday, December 14, 2023, 11:17

pressure dropping.  Increase ramp to 4A/min (2A/30s)

Will stop and ramping for temperature measurements

Thursday, December 14, 2023, 13:28

Increased ramp to 5A/min (2.5A/30s)

 Will heat to 703A on TGHT and leave for 4 hours

Wednesday, December 06, 2023, 09:47

Target number of foils:370

Analysis discs 16 A and 16B interspersed on the end further from the laser

A are discs produced using new method and B are discs produced using milling.

Total length packed 16 cm (excluding the analysis discs)

container has 3 Ta heat shields (one inner around fins and center block, new type of 1st shield made up of three pieces)

No endcaps inserted to facilitate out-gassing

Ta coated spring at  front end

ramp to 120A @ 1A/min TGHT and to 120A on TBHT hold there until pressure drop, then ramp to 500A on TGHT and 230A TBHT.

max approx 700A 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 5.00 e -4 Torr

Bad vac at 5.00 e-2 Torr

 IGP1= 1e-06 Torr at start of initial ramp.

Wednesday, December 06, 2023, 09:56

System left to drop pressure over previous night and now at 120A.  waiting for pressure drop.

Wednesday, December 06, 2023, 11:18

increased ramp rate to 2A/min

Wednesday, December 06, 2023, 14:41

increased ramp to 3A/min on TGHT and stopping to allow pressure to stabilize before taking temperature readings

Top temperature 1800C at 710 A but started dropping.  Increased current to 750A and left there for 4 hours.

Cool down at -2A/min TGHT and -1A/min TBHT

Monday, November 06, 2023, 09:59

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =3.1 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

 Monday, November 06, 2023, 14:07

OMEGA =1852 C

IGP1= 3.14e-06 Torr

TGHT= 399A, 6.6V

TBHT= 233A, 4.1V

Tuesday, November 07, 2023, 12:28

Cooled down previous evening and took out today.

rampdown was @-2A/min for TGHT and -1A/min TBHT

Friday, October 20, 2023, 07:20

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial = 9.9 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 4A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Friday, October 20, 2023, 07:24

Starting initial ramp

Vacuum IGP1 initial = 9.9 e-07 Torr

Friday, October 20, 2023, 08:55

After initial pressure bump continued heating at 1A/min to 120A to observe any other possible pressure bump.

Friday, October 20, 2023, 09:05

increased ramp to 4A/min to 400 TGHT and 230 TBHT

Friday, October 20, 2023, 09:35

OMEGA=1280 C

TGHT= 221.5 A, 3.24V 

TBHT=228.9, 3.9V

Friday, October 20, 2023, 10:22

OMEGA 1852 C at TGHT = 390A, 6.5 V ; TBHT = 232 A, 4.0 V

Will leave for 4 hours

Friday, October 20, 2023, 14:16

About to start rampdown

TGHT @ -2A/min

TBHT@ -1A/min

Final OMEGA = 1840 C

IGP1 = 1.83e-06 Torr

Ta#67 LP-SIS target description: 

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.033mm (0.0013") avg Measured. 

Target material batch: Ta 2023-1  Mt'l PO# TR-2022-03028

Target density = 12.515 g/cm3

Target length = 4.97 cm

Total Mass = 62.202 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven =  461g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

Thursday, October 05, 2023, 12:44: Roughing. 

Thursday, October 05, 2023, 13:10; TP1 on.  

Thursday, October 05, 2023, 13:11: TGHT / TBHT test. Tap up to 5 / 5 A & back to 0 A. Ok.

Thursday, October 05, 2023, 13:13: Slope Set @ 0.98 

Friday, October 06, 2023, 05:54: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min. 

Friday, October 06, 2023, 11:50: TGHT / TBHT @ 580 / 230 A (568 / 233 A). Auto-ramping TGHT to 630 A @ 2 A per min (640 A w/ offset). Temperature @ 1716 C. Vacuum @ 2.76e-06T.

Friday, October 06, 2023, 12:20: TGHT / TBHT @ 630 / 230 A (618 / 233 A). Auto-ramping TGHT to 650 A @ 2 A per min (640 A w/ offset). Temperature @ 1809 C. Vacuum @ 3.77e-06T.

Friday, October 06, 2023, 12:37: TGHT / TBHT @ 650 / 230 A (638 / 233 A). Auto-ramping TGHT to 665 A @ 2 A per min (650 A w/ offset). Temperature @ 1844 C. 

Friday, October 06, 2023, 12:53: Tapped up to TGHT / TBHT @ 670/ 230 A (657 / 233 A). Temperature @ 1880 C. Vacuum @ 4.94e-06T. 

Friday, October 06, 2023, 12:57: Tapped TGHT to 675.  TGHT / TBHT @ 675 / 230 A (662 / 233 A). Temperature @ 1889 C. Vacuum @ 5.03e-06T. 

Friday, October 06, 2023, 13:00: Tapped TGHT to 682.  TGHT / TBHT @ 682 / 230 A (669 / 233 A). Temperature @ 1901 C. Vacuum @ 5.46e-06T. Desired Temperature reached.

Friday, October 06, 2023, 13:01: Auto-cooling @ 2 A per min.

Tuesday, October 10, 2023, 08:37: PS & TP off. 

 Ta#66 LP-SIS target description: 

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.033mm (0.0013") avg Measured. 

Target material batch: Ta 2023-1  Mt'l PO# TR-2022-03028

Target density = 12.446 g/cm3

Target length = 5.0 cm

Total Mass = 62.230 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

Desired temperature 1900C

Wednesday, September 20, 2023, 14:18: Roughing. 

Wednesday, September 20, 2023, 14:35: TP Started. 

Wednesday, September 20, 2023, 14:43: TP on. 

Wednesday, September 20, 2023, 14:45: TGHT / TBHT raised to 5 / 5 A & lowered. Quick check ok. 

Thursday, September 21, 2023, 07:47: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min. Vacuum @ 8.30e-07T.

Thursday, September 21, 2023, 09:54: Slope set to 0.98 

Thursday, September 21, 2023, 13:42: TGHT / TBHT @ 580 / 230 A (568 / 233 A). Auto-ramping TGHT to 630 A @ 2 A per min (640 A w/ offset). Temperature @ 1748 C. Vacuum @ 2.47e-06T.

Thursday, September 21, 2023, 14:10: TGHT / TBHT @ 630 / 230 A (618 / 233 A). Auto-ramping TGHT to 650 A @ 2 A per min (640 A w/ offset). Temperature @ 1843 C. Vacuum @ 3.30e-06T.

Thursday, September 21, 2023, 14:23: TGHT / TBHT @ 650 / 230 A (638 / 233 A). Auto-ramping TGHT to 660 A @ 2 A per min (648 A w/ offset). Temperature @ 1879 C. Vacuum @ 3.77e-06T.

Thursday, September 21, 2023, 14:29: Tapped TGHT to 662.  TGHT / TBHT @ 662 / 230 A (649 / 233 A). Temperature @ 1903 C. Vacuum @ 4.08e-06T. Desired Temperature reached.

Thursday, September 21, 2023, 14:33: Auto-cooling started @ 1 A per min.

Monday, September 25, 2023, 08:09: Turbo pump off. 

Tuesday, September 12, 2023, 09:51

The coated container was wrapped in 3 Ta foil heatshield and left in evap2 over night to attain vacuum.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~700A (adjustable)

Heating autoramp starged at 1A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 2.7e-06 Torr

Tuesday, September 12, 2023, 7:00

Started autoramp @1A/min to 120A on both TGHT and TBHT

Tuesday, September 12, 2023, 09:53

Heating ramp set to 230A for both TGHT and TBHT.  Rate at 2A/min for both heaters.

Tuesday, September 12, 2023, 11:21

Continued ramp on TGHT at 2A/min to 335A and now setting to 3A/min (1.5A/30s)

Tuesday, September 12, 2023, 11:47

Continue ramping @3A/min on TGHT

 Tuesday, September 12, 2023, 13:33

Reached 1840 C at TGHT =677A and 10.5V

Will keep for 4 hours

Thursday, August 31, 2023, 07:07

The coated container was wrapped in 3 Ta foil heatshields.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~500A (adjustable)

Heating autoramp starged at 1A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 7.7e-07 Torr

Thursday, August 31, 2023, 12:29

OMEGA=1238 C

IGP1=1.4e-06 Torr

Continue ramp

 ramp @ 4A/min (2A/30s)

Thursday, August 31, 2023, 12:50

IGP1= 2.23e-06 Torr

OMEGA=1392 C

Thursday, August 31, 2023, 13:04

IGP1=2.7e-06 Torr

OMEGA=1443 C

Thursday, August 31, 2023, 13:18

IGP1= 3.8e-06 Torr

OMEGA=1537 C

Thursday, August 31, 2023, 14:38

OMEGA=1852C

Tuesday, August 29, 2023, 12:46

The coated container was wrapped in 4 Ta foil heatshields.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 4A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Tuesday, August 29, 2023, 12:49

Initial heating start

IGP1= 6.0 e-06 Torr

Tuesday, August 29, 2023, 14:31

Paused ramping to take reading

IGP1= 5.98e-06 Torr

OMEGA = 1500 C

Tuesday, August 29, 2023, 15:24

OMEGA 1866 C

IGP1= 6.6e-6 Torr

Saturday, August 26, 2023, 09:39

The coated container was wrapped in 4 Ta foil heatshields.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 4A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 8.7e-07 Torr

Saturday, August 26, 2023, 10:54

IGP1= 1.2e-06 Torr

Start ramp up at 4A/min on both heaters (2A/30s) until TGHT = 400A and TBHT=230A

Saturday, August 26, 2023, 11:32

Paused ramp to allow temperature to stabilize and record data

OMEGA= 1396 C

IGP1= 2.47e-06 Torr

Saturday, August 26, 2023, 11:52

Paused ramp to record data

OMEGA = 1544 C

IGP1=3.4e-06 Torr

Saturday, August 26, 2023, 12:09

Paused ramp to record data

OMEGA = 1653

IGP1 = 4.5e-06 Torr

Saturday, August 26, 2023, 12:33

Omega went up to 1878C.  Lowered the current on TGHT to reach OMEGA = 1857 C

Will keep until 430 pm

IGP1- 3.4e-06 Torr

Saturday, August 26, 2023, 16:10

ramping down at -2A/min tght 1A/min tbht

1837 C OMEGA

 Nb#11 LP-IG-LIS target description:

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.025mm (0.001")

Target density =  7.13 g/cm3

Target length = 3.53 cm

Total Mass = 25.165 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  434 g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

Final desired temperature = 1900C.

Replacement for Nb#10

Thursday, August 24, 2023, 14:16: Roughing.

OMEGA slope = 0.98.

Thursday, August 24, 2023, 14:31: Turbo pump started. 

Thursday, August 24, 2023, 14:41: TGHT / TBHT PS on. Manually test @ 5 / 5 A. ok. Tap back to 0 A. 

Thursday, August 24, 2023, 18:26: Vacuum @ 4.35e-06T. Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per minute. 

Thursday, August 24, 2023, 22:00: TGHT / TBHT @ 414 / 230 A (406 / 233 A - Offset). Auto-ramping TGHT to 580 A @ 2 A per min continued. Temperature @ 1353 C. Vacuum @ 4.03e-06T. 

Thursday, August 24, 2023, 23:29: TGHT / TBHT @ 580 / 230 A (569 / 233 A). Auto-ramping TGHT to 610 A @ 2 A per min (approx 600 A w/ offset). Temperature @ 1708 C. Vacuum @ 6.61e-06T. 

Thursday, August 24, 2023, 23:49: TGHT / TBHT @ 610 / 230 A (598 / 233 A). Auto-ramping TGHT to 630 A @ 2 A per min (620 A w/ offset). Temperature @ 1765 C. Vacuum @ 7.22e-06T. 

Friday, August 25, 2023, 00:04: TGHT / TBHT @ 630 / 230 A (618 / 233 A). Auto-ramping TGHT to 650 A @ 2 A per min (640 A w/ offset). Temperature @ 1808 C. Vacuum @ 7.54e-06T. 

Friday, August 25, 2023, 00:16: TGHT / TBHT @ 650 / 230 A (638 / 233 A). Auto-ramping TGHT to 670 A @ 2 A per min (660 A w/ offset). Temperature @ 1845 C. Vacuum @ 7.72e-06T. 

Friday, August 25, 2023, 00:27: TGHT / TBHT @ 670 / 230 A (657 / 233 A). Auto-ramping TGHT to 680 A @ 2 A per min (668 A w/ offset). Temperature @ 1880 C. Vacuum @ 8.46e-06T. 

Manually tap up to temperature.

Friday, August 25, 2023, 00:34: TGHT / TBHT @ 682 / 230 A (669 / 233 A). Temperature @ 1900-1901 C. Vacuum @ 8.59e-06T. Desired Temperature Reached.

Friday, August 25, 2023, 00:37: Auto-cooling @ 2 A per min. 

Friday, August 25, 2023, 06:15: 

Friday, August 25, 2023, 07:40: PS & TP off.