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

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

 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. 

Ta#(Spare) 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

Was labelled Ta#67 until the Thin foil target 45447-14 became so.

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. 

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

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

 Ta#67 Thin foil LP-SIS target description: 

Total Ta foils = 470 loaded into 2 packs of 235 foils each.

Foil Thickness = 0.010mm (0.0004") avg Measured. 

Target material batch:  https://elog.triumf.ca/TIS/Target+Production/143

Target density = 4.498 g/cm3

Target length = 3.7465 cm

Total Mass = 16.8509 g [Incl foils + Ta wire on 2 packs]

Total mass w/ Target oven =  415g (No end caps)

Discs in target are arranged as follows: 2packs

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

No Ta foil heat shield added

Monday, July 22, 2024, 14:53: Roughing. 

Halt roughing. Install heat plates.

Monday, July 22, 2024, 15:06: Roughing.

Monday, July 22, 2024, 15:26: TP On.

Monday, July 22, 2024, 15:34: TP Timeout. Restart. 

Monday, July 22, 2024, 15:35: TP at speed (Green) 

Monday, July 22, 2024, 15:36: PS On. TGHT / TBHT to 5/5 A manually. OK. Tap down. 

Tuesday, July 23, 2024, 07:03: Auto-ramping TGHT / TBHT to 120 / 60 A @ 2 A per min. Desired temperature 1900 C.

Tuesday, July 23, 2024, 08:02: OMEGA IR2C Laser off. Slope set to 0.98. 

Tuesday, July 23, 2024, 08:06: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min. 

Tuesday, July 23, 2024, 09:57: Auto-ramping TGHT / TBHT to 500 / 200 A @ 2 A per min. Temperature @ 1022 C. 

Tuesday, July 23, 2024, 11:59: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min. Temperature @ 1538 C.

Tuesday, July 23, 2024, 12:46: TGHT / TBHT @ 580 / 230 A (569 / 233 A). Temperature @ 1710 C. Vacuum @ 7.44e-06T. 

Tuesday, July 23, 2024, 14:23: TGHT / TBHT @ 580 / 230 A (568 / 233 A). Auto-ramping TGHT to 620 A @ 2 A per min. Temperature @ 1721 C. Vacuum @ 5.06e-06T. 

Tuesday, July 23, 2024, 14:48: TGHT / TBHT @ 620 / 230 A 609 / 233 A). Auto-ramping TGHT to 630 A @ 2 A per min. Temperature @ 1799 C. Vacuum @ 6.76e-06T.  

Tuesday, July 23, 2024, 14:56:  TGHT / TBHT @ 630 / 230 A 618 / 233 A). Temperature @ 1816 C. Vacuum @ 7.14e-06T. Tapping up manually TGHT to get to 1900degC 

Tuesday, July 23, 2024, 15:23:  TGHT / TBHT @ 670 / 230 A 657 / 233 A).  Temperature @ 1890 C. Vacuum @ 9.94e-06T.  Stopping and waiting for 5min.

Tuesday, July 23, 2024, 15:39: Target ramp down 2A/min to 0 both TGHT and TBHT. 

Wednesday, July 24, 2024, 08:50: TP off.

Wednesday, July 24, 2024, 09:18: Venting.

Wednesday, July 24, 2024, 10:28: Target removed. EVAP2 clear. 

Saturday, September 07, 2024, 09:54

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =8.1 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 ramp manually to 50A on TGHT 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

Saturday, September 07, 2024, 17:38

At 400 A set point on TGHT, read back is 392A and OMEGA reads 1840C.   TBHT set to 230A reads 233A.

It will be kept at this current for four hours before rampdown.

Monday, September 09, 2024, 19:06

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =2.6 e-06 Torr

Target temperature on OMEGA= 1800-1900 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   and TBHT until outgassin peak passed

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

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Monday, September 09, 2024, 19:08

Peak passed around 70A will continue ramp up at 1A/min to 400A on TGHT and 230A TBHT

Tuesday, September 10, 2024, 13:13

Was ramped down at -2 A/min TGHT and -1 A/min TBHT

Wednesday, March 19, 2025, 13:08

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =

Target temperature on OMEGA= 1800-1850 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Thursday, March 20, 2025, 06:10 

IGP1 initial = 6.1e-7 Torr

 start ramp at 2A/min

Thursday, March 20, 2025, 07:04

paused ramp to prevent pressure spike

Thursday, March 20, 2025, 10:16

OMEGA 1800 C @ TGHT = 402A, 6.8V

Will leave for 4 hours.

Thursday, March 20, 2025, 13:53

Starting rampdown at 2A/min TGHT and 1A/min TBHT

Tuesday, March 25, 2025, 15:25

The coated container as wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =e-07 Torr

Target temperature on OMEGA= 1800-1850 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Will be left overnight to pump down

Wednesday, March 26, 2025, 09:07

starting ramp up at 2A/min to 230A for both TGHT and TBHT

Wednesday, March 26, 2025, 12:48

1800 C at 400A TGHT, 6.9V TGHT

Leaving for 4 hours

Friday, March 28, 2025, 06:49

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =8.0e-07 Torr

Target temperature on OMEGA= 1800-1850 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~400A (adjustable)

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Starting ramp at 2A/min

Friday, March 28, 2025, 09:41

At 412A readback on TGHT OMEGA reads 1702 C.  Maybe re-use of Ta heatshields resulted in loss of efficiency.  Will ramp to 420 A and leave for 4 hours.

Friday, March 28, 2025, 14:25

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

Thursday, September 26, 2013, 13:04

The LP-IG-LIS target container is coated with TaC. 

Container is wrapped with 3 layers of Ta heat shield and about to go through the sintering process.

A thermocouple is inserted to measure the temperature inside the tube (1st attempt ever). 

Click on the link for detailed pictures:

https://www.dropbox.com/sh/6dc5arajg87mws9/6cU5OxjkZg

TGHT will be ramped up to 580A at 0.2A/min

TBHT will be ramped up to 230A at 0.2A/min.

Chamber has been pumped down.  HS cooling H2O valves are opened, and no leaks are detected. 

Currently IGP1 @ 5.9e-6 Torr.

 Thursday, September 26, 2013, 15:44

TGHT stepped up to 30A.  TBHT currently @ 0A. 

Temp @ 35C, Vac @ 1.4e-5 Torr.

 Monday, September 30, 2013, 14:54

The container was heated up to 580A TGHT/ 230A TBHT for a day (see attachment #1 for vac vs cur plot).

The temperature was measure at ~1780C. (see link for details: https://www.dropbox.com/sh/d8d9j2t60qlm3jk/nkMh7dx_R8 )

The target was cooled down and vented. 

Proceed complete.

 Thursday, June 04, 2015, 9:07

Container was sprayed with TaC and let dry.

Container has 3x Ta heat shields including center block.

Container was loaded into EVAP2 yesterday and pumped down overnight.

HS water valves were opened up this morning, no leaks detected.

IGP1 = 4.6e-7 Torr.

Tapped up manually to 40A.

Waited ~25min, Vacuum stable.

IGP1 = 5.0e-7 Torr.

Initiating auto-ramp.

TGHT will be ramped to reach 2000C

 Friday, June 05, 2015, 10:01

IGP1 = 4.5e-7 Torr.

TGHT = 313A, 4.47V

OMEGA = 1444C

Increasing ramping rate to 1.0A/min

 Friday, June 05, 2015, 11:31

IGP1 = 1.2e-6 Torr.

Increasing ramping rate to 2.0A/min

Laura Lambert wrote:

Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min

 Friday, June 05, 2015, 12:01

TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down

Cooling down process can be initiated after 4 hours. 

John Wong wrote:

Laura Lambert wrote:  Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min    Friday, June 05, 2015, 12:01 TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down Cooling down process can be initiated after 4 hours.

 Friday, June 05, 2015, 13:21

OMEGA = 1995C

Increasing TGHT to 470A to achieve desired max temperature of 2000C

Friday, June 05, 2015, 15:59

TGHT sat at max desired temperature of 2000C for ~4hrs.

TGHT = 470A, 7.7V

Initiating auto-cool at 1.0A/min.

 Monday, June 08, 2015, 11:31

Vented in air and opened up this morning.

Target container mostly sintered, two tiny patches near both ends not fully sintered.

Will re-install and re-sinter next week as another container with priority needs to be sintered first.

 Tuesday, June 09, 2015, 10:45

See attachements for 'not-fully-sintered' photos

Laura Lambert wrote:

John Wong wrote: Laura Lambert wrote:  Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min    Friday, June 05, 2015, 12:01 TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down Cooling down process can be initiated after 4 hours.     Friday, June 05, 2015, 13:21 OMEGA = 1995C Increasing TGHT to 470A to achieve desired max temperature of 2000C Friday, June 05, 2015, 15:59 TGHT sat at max desired temperature of 2000C for ~4hrs. TGHT = 470A, 7.7V Initiating auto-cool at 1.0A/min.  Monday, June 08, 2015, 11:31 Vented in air and opened up this morning. Target container mostly sintered, two tiny patches near both ends not fully sintered. Will re-install and re-sinter next week as another container with priority needs to be sintered first.  Tuesday, June 09, 2015, 10:45 See attachements for 'not-fully-sintered' photos

 Wednesday, June 10, 2015, 12:06

After inspecting the target container,  the inner tube surface has "dark" patches, which may not be evenly coated or the coating layer was too think.  

See link for photos:  https://www.dropbox.com/sh/m94mjuuodwhz5jb/AADEBv_Kha_p_1An40eftWNHa?dl=0 

Attempt to re-spray the container and re-sinter.  

John Wong wrote:

Laura Lambert wrote: John Wong wrote: Laura Lambert wrote:  Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min    Friday, June 05, 2015, 12:01 TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down Cooling down process can be initiated after 4 hours.     Friday, June 05, 2015, 13:21 OMEGA = 1995C Increasing TGHT to 470A to achieve desired max temperature of 2000C Friday, June 05, 2015, 15:59 TGHT sat at max desired temperature of 2000C for ~4hrs. TGHT = 470A, 7.7V Initiating auto-cool at 1.0A/min.  Monday, June 08, 2015, 11:31 Vented in air and opened up this morning. Target container mostly sintered, two tiny patches near both ends not fully sintered. Will re-install and re-sinter next week as another container with priority needs to be sintered first.  Tuesday, June 09, 2015, 10:45 See attachements for 'not-fully-sintered' photos    Wednesday, June 10, 2015, 12:06 After inspecting the target container,  the inner tube surface has "dark" patches, which may not be evenly coated or the coating layer was too think.   See link for photos:  https://www.dropbox.com/sh/m94mjuuodwhz5jb/AADEBv_Kha_p_1An40eftWNHa?dl=0  Attempt to re-spray the container and re-sinter.

 Friday, June 12, 2015, 14:58

re-sprayed with second layer of TaC spray this morning.

re-loaded into evap2.

HS water valves opened, no leaks detected.

will ramp-up over weekend.

Laura Lambert wrote:

John Wong wrote: Laura Lambert wrote: John Wong wrote: Laura Lambert wrote:  Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min    Friday, June 05, 2015, 12:01 TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down Cooling down process can be initiated after 4 hours.     Friday, June 05, 2015, 13:21 OMEGA = 1995C Increasing TGHT to 470A to achieve desired max temperature of 2000C Friday, June 05, 2015, 15:59 TGHT sat at max desired temperature of 2000C for ~4hrs. TGHT = 470A, 7.7V Initiating auto-cool at 1.0A/min.  Monday, June 08, 2015, 11:31 Vented in air and opened up this morning. Target container mostly sintered, two tiny patches near both ends not fully sintered. Will re-install and re-sinter next week as another container with priority needs to be sintered first.  Tuesday, June 09, 2015, 10:45 See attachements for 'not-fully-sintered' photos    Wednesday, June 10, 2015, 12:06 After inspecting the target container,  the inner tube surface has "dark" patches, which may not be evenly coated or the coating layer was too think.   See link for photos:  https://www.dropbox.com/sh/m94mjuuodwhz5jb/AADEBv_Kha_p_1An40eftWNHa?dl=0  Attempt to re-spray the container and re-sinter.        Friday, June 12, 2015, 14:58 re-sprayed with second layer of TaC spray this morning. re-loaded into evap2. HS water valves opened, no leaks detected. will ramp-up over weekend.

 Friday, June 12, 2015, 16:07

Vacuum comes down to 6.1e-6 Torr.

Initiated auto-ramping at 0.2A/min for 300A first.