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

Friday, August 30, 2024, 11:31

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 1A/min on  TGHT  100A and TBHT

Then at 1A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

note: Left TBHT hole is off from center by a good margin

Sunday, September 01, 2024, 07:32

Starting initial ramp at 1A/min to 50A

Sunday, September 01, 2024, 15:20

have ramped ;up at 1A/min on both TGHT and TBHT but had two issues.

1) Set current and readback current have discrepancies but the TBHT discrepancy is significant (TBHT Set at 188 while RD is 231.9 A @ 1.9V)

   TGHT also has odd behavior with set point 405 giving 392A RD and 0.067V.  Will hold until 430pm before starting ramp down

Sunday, September 01, 2024, 16:30

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

Note: OMEGA not able to give any reasonable readings

Tuesday, September 03, 2024, 13:51

After troubleshooting EVAP2 it was found that a copper line was touching the metal encasement grid most likely resulting in a short.  A short was seeing and it disappeared after moving the copper line away from the grid.  

Upon restarting on epics the PS went to maximum current and it was shut off after 30seconds to a minute.  The system was checked again by Arthur and TGHT was manually increased to 5A and then set to Zero again.  Arthur thinks that the PS probably requires this step after switching from local controls to remote.  Will start the sintering again as the container is coated but not sintered.

Tuesday, September 03, 2024, 14:03

ramping at 1A/min on both TGHT and TBHT to 90A. 

Tuesday, September 03, 2024, 22:25  

Started rampdown at -2A/min TGHT and -1A/min TBHT.  HIgh temperature from OMEGA was 1825 C at 430A readback on TGHT.