Tuesday, April 04, 2023, 12:48

Ta HP-FEBIAD was coated with TaC and wrapped with Ta heat-shields (3 layers + 1 inner layer around fins including center fins)

Desired temperature = 1850 C , TBHT will be set fixed at 230A (max).

Evap 2 will be pumped down over previous night

OMEGA slope= 0.990

Good vacuum = 5.00 e-4 Torr

Bad vacuum = 5.00 e-2 Torr

OMEGA target temp = 1850 C

Wednesday, April 05, 2023, 07:37

IGP1= 4.3e-07 Torr

starting autoramp @ 1A/min to 230A on both TGHT and TBHT

Wednesday, April 05, 2023, 10:56

Starting Autoramp at 4A/min to 400 A on TGHT

Wednesday, April 05, 2023, 14:14

OMEGA Reached 1877C  @ 743A, 11.3V TGHT

rampdown  @ 6:00 pm

Wednesday, April 05, 2023, 14:38

Decreased TGHT current to 736A because temperature was creeping up

rampdown was started at 6:05 pm

Final pressure at 0 V - 1.7e-07 Torr

Wednesday, April 12, 2023, 09:53

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= N/A

Final TGHT current= ~400A (adjustable)

Heating autoramp starged at 4A/min on  TGHT  40A

Then at 2A/min  to 90 A.

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

 IGP1 initial = 4.7e-07 Torr

Wednesday, April 12, 2023, 10:46

heating at 2A/min to 90A

Wednesday, April 12, 2023, 11:18

Autoramping at 2A/min to 230A

Wednesday, April 12, 2023, 11:53

Autoramping at 4A/min to 230 A

Wednesday, April 12, 2023, 13:57

Autoramping to 380A

Wednesday, April 12, 2023, 14:07

manually adjusted TGHT to 384A. 6.6 V

OMEGA reads 1859 C.   Leaving for 4 hours. 

Wednesday, April 12, 2023, 18:36

Started rampdown at -2A/min

Sunday, April 16, 2023, 14:08

The coated container was wrapped in four Ta foil heatshields.

Target temperature on OMEGA= 1860-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Ramped at 2A/min to 230 A on both TGHT and TBHT.

Then ramped @4A/min to 385 A on TGHT.  Then ramped manually to 1850 C

Sunday, April 16, 2023, 18:31

At 428A reached 1830C on OMEGA

Sunday, April 16, 2023, 22:24

Start ramp down @ -2A/min TGHT and -1A/min TBHT

Tuesday, April 18, 2023, 06:46

The coated container was wrapped in four Ta foil heatshields.

Target temperature on OMEGA= 1830-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02Torr

Tuesday, April 18, 2023, 06:47

IGP1 initial = 3.80e-07 Torr

Start ramp up at 2A min to 230 on both TBHT and TGHT

Tuesday, April 18, 2023, 09:43

Autoramping TGHT to 380 A @4/min (2/A 30s)

Tuesday, April 18, 2023, 10:36

manually ramped to 416A, 6.8 V on TGHT

TBHT = 230 A, 4.0V

Holding here for 4 hours.

OMEGA = 1863 c

Tuesday, April 18, 2023, 11:26

increased current on TGHT to 418 because temperature had slipped below 1850 C

Tuesday, April 18, 2023, 14:52

ramping down @-2A/min TGHT and -1A/min TBHT

Thursday, April 20, 2023, 06:59

The coated container was wrapped in 3 Ta foil heatshields.

Target temperature on OMEGA= 1830-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Thursday, April 20, 2023, 07:02

Started TBHT and TBHT ramp at 1A/min to 230A

Thursday, April 20, 2023, 09:55

From 170 A started ramping at 2A/min to 230 A on both TGHT and TBHT

Thursday, April 20, 2023, 10:27

Starting ramp on TGHT to 300A, TBHT kept at 230A, 3.0 V

Thursday, April 20, 2023, 11:19

ramping at 4A/min (2A/30s) to 340 A on TGHT

Thursday, April 20, 2023, 11:40

After plot, ramping @ 2A/min to 460A on TGHT expected to reeach at 1245.  4 hours at 4:45 pm

Thursday, April 20, 2023, 13:44

Note that top temperature was 1835C @  480 A, 7.9V

Thursday, April 20, 2023, 17:00

Start rampdown at -2A/min TGHT and -1A/min TBHT

Monday, April 24, 2023, 13:35

The coating is not as good as expected.  Maybe too much time between coating and sintering.  Will not use for TiC target.

Sunday, April 23, 2023, 07:23

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= 230A

Final TGHT current= ~450A (adjustable)

Good vacuum = 5.0 e-04Torr

Bad vacuum = 5.0E-02 Torr

Interlock tripped (HS water flow, SP6, GE, CHIL <--supposed to be bypassed)

 Monday, April 24, 2023, 13:24

In the morning Carla found some loose wires behind EVAP 2. Wires connecting the flow-meter.  The interlock problem was fixed as it was noted there was normal HS water flow.

Started ramp up at 1A/min to 230 A.  The first outgassing bump observed and wil start autoramp @ 2A/min on both TGHT and TBHT (target is 400A on TGHT and 230A on TBHT).

Monday, April 24, 2023, 16:24

Reached 480A on TGHT at 4 pm.  Manually tapped to 500 A on TGHT , OMEGA=1853C.  Will keep until 8 pm.

Monday, April 24, 2023, 19:56

OMEGA= 1853 C

IGP1= 1.5e-06 Torr

TGHT = 500A, 8.5V

TBHT= 230A, 3.1V

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

Friday, April 28, 2023, 11:29

loaded 14 TaC coated end caps and 2 TaC coated springs.

OMEGA Slope 0.99

Will heat to 1850-1900 C and hold for 4 hours

Good Vac = 5.0e-4 Torr

Bad Vac= 5.0 e-02 Torr

 2 end caps had slight damage and were disposed of.  12 good caps and 2 good springs.

Thursday, June 08, 2023, 09:28

Using smaller particle size TaC no ball mill procedure.

Loaded 2 TaC coated end caps and 1 TaC coated springs.

OMEGA Slope 0.99

Will heat to 1850-1900 C and hold for 4 hours

Good Vac = 5.0e-4 Torr

Bad Vac= 5.0 e-02 Torr

 Initial IGP1= 4.07E-06 Torr

Thursday, June 08, 2023, 10:36

ramped @ 2A/min to 100A.  Then after pressure stabilized starting ramp at 4A/min (2A/30s) to 400A

Thursday, June 08, 2023, 12:24

reached 1850 C with Set current = 480 and RD current = 470.6A, V = 7.7

Will leave for 4 hours.

Thursday, June 08, 2023, 15:31

ramping down at -2A/min (-1A/30s)

Tuesday, August 15, 2023, 10:48

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= N/A

Final TGHT current= ~400A (adjustable)

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

Then at 4A/min  to 100 A.

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

 IGP1 initial =8.9e-06 Torr

 Tuesday, August 15, 2023, 13:00

Tuesday, August 15, 2023, 13:00

Pressure stabilizing @8.8e-06 Torr

starting 2A/30s ramp to 400 A

Tuesday, August 15, 2023, 14:02

TGHT RD CURRENT = 331.4A, 5.8V, SET CURRENT=338 A. 

OMEGA = 1855

IGP1= 1.5e-05 Torr

Leave for 4 hours

Tuesday, August 15, 2023, 15:05

Temperature dropped slightly to 1820C so increased current set point to 345A, and RD was at 338A, 5.9V

OMEGA increased to 1842C

Tuesday, August 15, 2023, 17:59

OMEGA = 1823C

TGHT= RD 338A, 5.9V   SET= 345A

IGP1= 4.0e-06 Torr

Start rampdown at -2A/min

Tuesday, August 22, 2023, 09:29

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 = 2 hours

Final Current TBHT= N/A

Final TGHT current= ~400A (adjustable)

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

Then at 4A/min  to =400 A.

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

 IGP1 initial =2.2e-06 Torr

 Tuesday, August 22, 2023, 10:25

IGP1= 2.31e-06 Torr

TGHT 98.0 A (RD), 1.35 V

Start ramping at 2A/min to 400A

Tuesday, August 22, 2023, 11:54

Reached 1860 @ TGHT = 353A, 6.16V (RD)  Will leave for 2 hours

Tuesday, August 22, 2023, 14:07

1853C OMEGA

TGHT = 353 A, 6.2 V (RD)

IGP1= 2.88E-06 Torr

Starting ramp-down at -2A/min

Saturday, August 26, 2023, 09:37

Note: the coating looks really good .  The second sintering on the second coating was 2 hours.  Will test the coating during graphite material conditioning.

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

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

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, 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

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

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

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

 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

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. 

Tuesday, May 07, 2024, 06:16

TP was swapped on previous day (May 6th)

protective screen installed.

Loaded 9 TaC coated end caps (groups of 4 and 5) and 2 TaC coated springs.

OMEGA Slope 0.99

Will heat to 1850-1900 C and hold for 4 hours

Good Vac = 5.0e-4 Torr

Bad Vac= 5.0 e-02 Torr

 Initial IGP1=6.7E-07 Torr