Anders Mjos wrote:

Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump

 After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.

Aurelia Laxdal wrote:

Anders Mjos wrote: Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump  After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.

 Raised the TGHT at 620A. The TBHT was already set at 230A. The temperature is at 1902 deg C. As per John's instructions the target will condition at these setpoints over the week-end.

Aurelia Laxdal wrote:

Aurelia Laxdal wrote: Anders Mjos wrote: Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump  After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.  Raised the TGHT at 620A. The TBHT was already set at 230A. The temperature is at 1902 deg C. As per John's instructions the target will condition at these setpoints over the week-end.

Today, lowered the TGHT from 620A (at 1894 deg C) to 300A.  TBHT is still at 230A.

Aurelia Laxdal wrote:

Aurelia Laxdal wrote: Aurelia Laxdal wrote: Anders Mjos wrote: Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump  After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.  Raised the TGHT at 620A. The TBHT was already set at 230A. The temperature is at 1902 deg C. As per John's instructions the target will condition at these setpoints over the week-end. Today, lowered the TGHT from 620A (at 1894 deg C) to 300A.  TBHT is still at 230A.

 Cooling down the target.

Aurelia Laxdal wrote:

Aurelia Laxdal wrote: Aurelia Laxdal wrote: Aurelia Laxdal wrote: Anders Mjos wrote: Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump  After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.  Raised the TGHT at 620A. The TBHT was already set at 230A. The temperature is at 1902 deg C. As per John's instructions the target will condition at these setpoints over the week-end. Today, lowered the TGHT from 620A (at 1894 deg C) to 300A.  TBHT is still at 230A.  Cooling down the target.

Thursday, March 24, 2016, 11:29 

Target was removed from the Evaporator.  

The thermocouples broke off.  

Need to insert Re foil prior to installing

John Wong wrote:

Aurelia Laxdal wrote: Aurelia Laxdal wrote: Aurelia Laxdal wrote: Aurelia Laxdal wrote: Anders Mjos wrote: Laura Lambert wrote: Aurelia Laxdal wrote: Started Ta#47 heating at Evap2 using the autoramp program. The TGHT current is setup to go to 300A (for now) and the TBHT to 230A (final value).  Monday, March 14, 2016, 09:20 One thermocouple was not welded on correctly and is not working.  Cooling evap2 back down, to remove target and re-weld thermocouple. Once thermocouple replaced, will ramp back up and continue with tests/ conditioning of target.    Monday, March 14, 2016, 13:12: Stopped turbo pump  After EVAP2 was vented the thermocouple problem was fixed: it was the wire at on connector inside the box not making proper contact. The lid of the heat shield was also replaced since the one initially mounted had no holes, so one couldn't see the center block. Restarted pumping down at 4:30pm. Just started again the autoramp program: TGHT set to 300A (for the time being) and TBHT to 230A. Temperature measurements will resume tomorrow morning.  Raised the TGHT at 620A. The TBHT was already set at 230A. The temperature is at 1902 deg C. As per John's instructions the target will condition at these setpoints over the week-end. Today, lowered the TGHT from 620A (at 1894 deg C) to 300A.  TBHT is still at 230A.  Cooling down the target.   Thursday, March 24, 2016, 11:29  Target was removed from the Evaporator.   The thermocouples broke off.   Need to insert Re foil prior to installing

 Tuesday, April 19, 2016, 09:28: Uploaded thermoucouple data.

 Tuesday, July 26, 2016, 16:50

loaded into evap2

pumped down, HS water valves opened, no leaks detected.

tapped up manually to 35A

vacuum stable = 3.8e-6 Torr

Initiating auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.

Final setpoints at 230A for the TBHT and 600A for the TGHT.

Final desired temperature = 1800C

 Wednesday, July 27, 2016, 09:20

IGP1 = 6.3e-7 Torr, vacuum stable.

TGHT = 232A, 2.7V

TBHT = 131A, 1.76V

Increasing ramping rate to 1.0A/min and 0.5A/min for the TGHT and TBHT respectively.

 Wednesday, July 27, 2016, 15:46

TGHT = 600A, 8.87V

TBHT = 230A, 3.7V

IGP1 = 1.37e-6 Torr

OMEGA = 1640C

Increased max TGHT voltage to 12V

Tapped up manually to OMEGA = 1810C

TGHT = 675A, 10.21V

IGP1 = 2.2e-6 Torr

Will remain at max setpoints for the rest of the week and cool down over weekend.

 Thursday, July 28, 2016, 08:34

TGHT = 675A, 10.41V

OMEGA = 1833C

Tapped down to 660A, 10.09V

OMEGA = 1805C

 Friday, July 29, 2016, 13:57

OMEGA = 1814C

TGHT = 660A, 10.16V

TBHT = 230A, 3.72V

IGP1 = 3.43e-7 Torr

evap2 has remained at max setpoints for ~42hrs

conditioning complete.

Initiating auto-cool at 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.

 Tuesday, August 02, 2016, 13:39

vented in air and removed from evap2 this morning.

target looks good!

Friday, October 07, 2016, 16:40

Target consists of 470 discs.

Total packed length 3.4cm [exactly 7.8cm space on both sides]

Total mass 47.6889g [Incl foils + Ta wire on 6 packs]

Note: Target consists of 350 single discs and 6x20 packs of Ta discs

3x Ta Heat shields.

No endcaps inserted, no Rh foil inserted.

Chamber currently pumping down.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 300A at 2.0A/min.

Final desired temperature = 1900C

 Wednesday, October 12, 2016, 16:15

Tapped up to 1900C? [see attached link for data concerning temperature readings]

TGHT = 450A, 7.16V

TBHT = 230A, 4.1V

OMEGA = 1748C

IGP1 = 6.1e-7 Torr

Laura Lambert wrote:

Friday, October 07, 2016, 16:40 Target consists of 470 discs. Total packed length 3.4cm [exactly 7.8cm space on both sides] Total mass g [Incl foils + Ta wire on 6 packs] Note: Target consists of 350 single discs and 6x20 packs of Ta discs 3x Ta Heat shields. No endcaps inserted, no Rh foil inserted. Chamber currently pumping down. TBHT will be ramped up to 230A at 1.0A/min. TGHT will be ramped up to 300A at 2.0A/min. Final desired temperature = 1900C  Tuesday, October 11, 2016, 10:02   HS water valves opened, no leaks detected   Tapped up manually to 35A   Vacuum stable, IGP1 = 2e-7 Torr   Initiating auto-ramp.   OMEGA slope = 0.98  Wednesday, October 12, 2016, 16:15 Tapped up to 1900C? [see attached link for data concerning temperature readings] TGHT = 450A, 7.16V TBHT = 230A, 4.1V OMEGA = 1748C IGP1 = 6.1e-7 Torr

 Wednesday, October 12, 2016, 21:14

Current status before cooling down:

TGHT at 450A/7.32V; TBHT at 230A/4.10V; OMEGA at 1747C

Vacuum at 4.05 e-7 Torr.

Initiate auto-rampping at 2A/min for TGHT and 1A/min for TBHT

John Wong wrote:

Laura Lambert wrote: Friday, October 07, 2016, 16:40 Target consists of 470 discs. Total packed length 3.4cm [exactly 7.8cm space on both sides] Total mass g [Incl foils + Ta wire on 6 packs] Note: Target consists of 350 single discs and 6x20 packs of Ta discs 3x Ta Heat shields. No endcaps inserted, no Rh foil inserted. Chamber currently pumping down. TBHT will be ramped up to 230A at 1.0A/min. TGHT will be ramped up to 300A at 2.0A/min. Final desired temperature = 1900C  Tuesday, October 11, 2016, 10:02   HS water valves opened, no leaks detected   Tapped up manually to 35A   Vacuum stable, IGP1 = 2e-7 Torr   Initiating auto-ramp.   OMEGA slope = 0.98  Wednesday, October 12, 2016, 16:15 Tapped up to 1900C? [see attached link for data concerning temperature readings] TGHT = 450A, 7.16V TBHT = 230A, 4.1V OMEGA = 1748C IGP1 = 6.1e-7 Torr    Wednesday, October 12, 2016, 21:14 Current status before cooling down: TGHT at 450A/7.32V; TBHT at 230A/4.10V; OMEGA at 1747C Vacuum at 4.05 e-7 Torr. Initiate auto-rampping at 2A/min for TGHT and 1A/min for TBHT

 Thursday, October 13, 2016, 17:32

vented in air and opened up this morning.

target looks good.

Thursday, October 13, 2016, 18:04

Target loaded into evap2

No heat shields.

Both endcaps inserted and expanded.

Rh foil inserted [when inserting, the Ta rod used to expand the Rh foil inside the ionizer tube snapped off inside the container - this piece was able to be shaken out and is no longer inside]

Chamber pumped down.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 300A at 2.0A/min.

Final desired temperature = 1900C

Friday, October 14, 2016, 13:28

TGHT and TBHT had reached 300A/ 230A respectively.

Power bump ~10min ago caused evap2 to trip off.

Tapped back up manually to 35A.

Re-initiating auto ramp now.

Laura Lambert wrote:

Thursday, October 13, 2016, 18:04 Target loaded into evap2 No heat shields. Both endcaps inserted and expanded. Rh foil inserted [when inserting, the Ta rod used to expand the Rh foil inside the ionizer tube snapped off inside the container - this piece was able to be shaken out and is no longer inside] Chamber pumped down. HS water valves opened, no leaks detected   Tapped up manually to 35A   Vacuum stable, IGP1 = 5e-7 Torr   Initiating auto-ramp.   OMEGA slope = 0.98 TBHT will be ramped up to 230A at 1.0A/min. TGHT will be ramped up to 300A at 2.0A/min. Final desired temperature = 1900C Friday, October 14, 2016, 13:28 TGHT and TBHT had reached 300A/ 230A respectively. Power bump ~10min ago caused evap2 to trip off. Tapped back up manually to 35A. Re-initiating auto ramp now.

Friday October 14: the target was ramp up to 300A/230A after Laura started it. Then, I cooled down at 6pm before leaving TRIUMF. <br>

Saturday October 15: restated the auto-ramp for Ta#50 in EVAP2. It's currently set to go to 300A/230A.

Aurelia Laxdal wrote:

Laura Lambert wrote: Thursday, October 13, 2016, 18:04 Target loaded into evap2 No heat shields. Both endcaps inserted and expanded. Rh foil inserted [when inserting, the Ta rod used to expand the Rh foil inside the ionizer tube snapped off inside the container - this piece was able to be shaken out and is no longer inside] Chamber pumped down. HS water valves opened, no leaks detected   Tapped up manually to 35A   Vacuum stable, IGP1 = 5e-7 Torr   Initiating auto-ramp.   OMEGA slope = 0.98 TBHT will be ramped up to 230A at 1.0A/min. TGHT will be ramped up to 300A at 2.0A/min. Final desired temperature = 1900C Friday, October 14, 2016, 13:28 TGHT and TBHT had reached 300A/ 230A respectively. Power bump ~10min ago caused evap2 to trip off. Tapped back up manually to 35A. Re-initiating auto ramp now.   Friday October 14: the target was ramp up to 300A/230A after Laura started it. Then, I cooled down at 6pm before leaving TRIUMF. <br> Saturday October 15: restated the auto-ramp for Ta#50 in EVAP2. It's currently set to go to 300A/230A.

 Sunday October 16: the target temperature measurements up to 620A/230A were performed today not on October 15 (yesterday, it was cooled down before reaching 300A/230A). Currently the target is cooling down, to be ready tomorrow morning for the Test Stand. 

Aurelia Laxdal wrote:

Aurelia Laxdal wrote: Laura Lambert wrote: Thursday, October 13, 2016, 18:04 Target loaded into evap2 No heat shields. Both endcaps inserted and expanded. Rh foil inserted [when inserting, the Ta rod used to expand the Rh foil inside the ionizer tube snapped off inside the container - this piece was able to be shaken out and is no longer inside] Chamber pumped down. HS water valves opened, no leaks detected   Tapped up manually to 35A   Vacuum stable, IGP1 = 5e-7 Torr   Initiating auto-ramp.   OMEGA slope = 0.98 TBHT will be ramped up to 230A at 1.0A/min. TGHT will be ramped up to 300A at 2.0A/min. Final desired temperature = 1900C Friday, October 14, 2016, 13:28 TGHT and TBHT had reached 300A/ 230A respectively. Power bump ~10min ago caused evap2 to trip off. Tapped back up manually to 35A. Re-initiating auto ramp now.   Friday October 14: the target was ramp up to 300A/230A after Laura started it. Then, I cooled down at 6pm before leaving TRIUMF. <br> Saturday October 15: restated the auto-ramp for Ta#50 in EVAP2. It's currently set to go to 300A/230A.  Sunday October 16: the target temperature measurements up to 620A/230A were performed today not on October 15 (yesterday, it was cooled down before reaching 300A/230A). Currently the target is cooling down, to be ready tomorrow morning for the Test Stand.

 Monday, October 17, 2016, 09:21

Vented in air and taken out this morning.

Target looks good!

 Friday, December 16, 2016, 14:08

Target consists of 470 discs.

Total packed length 3.4cm [exactly 7.8cm space on both sides]

Total mass 45.9091g [Incl foils + Ta wire on 6 packs]

Target consists of 350 single discs and 6x20 packs of Ta discs

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

3x Ta Heat shields.

LP-FEBIAD container with large center block.

No endcaps inserted, no Rh foil inserted.

Chamber currently pumping down.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 350A at 2.0A/min.

Final desired temperature = 1900C

 Friday, December 16, 2016, 14:32

 Monday, December 19, 2016, 11:52

Tapped up manually to ~1900C [see attached excel for details on data collected - interesting temperature fluctuations]

 Will remain at max setpoints for min 4hrs then auto-cool

 Monday, December 19, 2016, 15:20

Target has remained at max setpoints for just over 4hrs

TGHT = 520A, 8.67V

OMEGA = 1820C

IGP1 = 5.2e-7 Torr

Initiating auto-cool at 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.

 Tuesday, December 20, 2016, 11:52

Vented in air and opened up this morning.

Looks like the windows was coated in evap2, unsure if this was missed and coated before conditioning target or if this is from materials coming out during conditioning process...

Target looks good.

Endcaps inserted but not expanded.

Target container wrapped in 3x heat shield foils and installed by JW

 Monday, March 13, 2017, 15:33: Opened water for HS. Vacuum stable at IG1 1E-6 T 

Monday, March 13, 2017, 15:48: TGHT / TBHT to 30 / 15 A.

Monday, March 13, 2017, 15:54: Started auto-ramping to TGHT / TBHT 150 / 75 A at 1 / 0.5 A/min. Good/bad vacuum 3 / 4 E-5 Torr

Tuesday, March 14, 2017, 08:23: Continue auto-ramping to TGHT / TBHT 300 / 150 A. Vacuum stable at IG1 2.3E-7 T 

Tuesday, March 14, 2017, 11:18: Continue auto-ramping to TGHT / TBHT 350 / 200 A. Vacuum stable at IG1 3.8E-7 T 

Wednesday, March 15, 2017, 08:31: Continue auto-ramping to TGHT 375. Vacuum stable at IG1 2.5E-7 T. Omega at 1500 C

Wednesday, March 15, 2017, 16:34: Continue auto-ramping to TGHT 500. Vacuum increased to IG1 5.5E-7 T. Omega at 1887 C

Thursday, March 16, 2017, 08:34: Continue auto-ramping to TGHT 520. Vacuum increased to IG1 3.3E-7 T. Omega at 1888 C

Thursday, March 16, 2017, 08:48: TGHT at 521 A 8.99 V. Omega at 1899 C

Friday, March 17, 2017, 08:25: TGHT at 521 A 8.88 V. Omega at 1886 C. Vacuum IG1 2.5E-7 Torr

Ramping down

Wednesday, March 22, 2017, 08:42: Turbo pump stopped

 Tuesday, May 30, 2017, 14:36

Target consists of 400 discs.

Total packed length 2.9cm [exactly 8.05cm space on both sides]

Total mass 42.8228g [Incl foils + Ta wire on 4 packs]

Target consists of 320 single discs and 4x20 packs of Ta discs

Discs in target are arranged as follows: 80singles / 1pack / 80singles / 2packs / 80singles / 1pack / 80singles

3x Ta Heat shields.

No endcaps inserted, no Rh foil inserted.

Chamber currently pumping down.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 350A at 2.0A/min.

Final desired temperature = 1900C

OMEGA slope = 0.98

Windows cleaned.

Vacuum limit stop at 3.0e-5 Torr, backing off at 4.0e-5 Torr.

 Wednesday, May 31, 2017, 09:47

HS water valves opened, no leaks detected.

Tapped up manually to 35A.

Vacuum stable.

IGP1 = 4.58e-7 Torr

IGP2 = 3.68e-7 Torr

Initiating auto ramp.

 Wednesday, May 31, 2017, 14:07

IGP1 = 1.11e-6 Torr

IGP2 = 1.13e-6 Torr

TGHT = 354A, 5.45V

TBHT =233A, 4.01V

OMEGA = 1565C

Increasing max setpoint to 400A at same ramping rate.

 Wednesday, May 31, 2017, 14:41

IGP1 = 1.19e-6 Torr

IGP2 = 1.24e-6 Torr

TGHT = 401A, 6.37V

OMEGA = 1708C

Increasing max setpoint to 425A at same ramping rate.

Wednesday, May 31, 2017, 15:51

Tapped up to ~1900C

TGHT = 480A, 7.85V

TBHT = 230A, 4.06V

OMEGA = 1912C

IGP1 = 1.85e-6 Torr

IGP2 = 2.06e-6 Torr

Will remain at max setpoints for a couple days before cooling

 Friday, June 02, 2017, 13:19

Remained at max setpoint for 2days

TGHT = 480A, 7.85V

TBHT = 230A, 4.06V

OMEGA = 1885C

IGP1 = 2.15e-7 Torr

IGP2 = 2.07e-7 Torr

Initiating auto-cool at 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.

 Monday, June 05, 2017, 15:18

Vented in air and taken out this morning.

Target looks good 

 Wednesday, June 07, 2017, 15:41

Endcaps inserted.

Ta heat shield removed.

Rh foil inserted.

Handed off to assembly.

 Tuesday, June 20, 2017, 15:58

Target consists of 470 discs.

Total packed length 3.4cm [exactly 7.8cm space on both sides]

Total mass 50.3105g [Incl foils + Ta wire on 6 packs]

Target consists of 350 single discs and 6x20 packs of Ta discs

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

1 long Ta Heat shield.

No endcaps inserted, no Rh foil inserted.

Chamber currently pumping down.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 600A at 2.0A/min.

Final desired temperature = 1900C

OMEGA slope = 0.98

Vacuum limit stop at 3.0e-5 Torr, backing off at 4.0e-5 Torr.

*Note: container accidentally engraved with WO#412218-6 when it should be WO#42218-6

Wednesday, June 21, 2017, 10:05 

HS water valves opened, no leaks detected.

Tapped up manually to 40A, vacuum stable.

IGP1 = 5.53e-7 Torr

IGP2 = 4.35e-7 Torr

Initiating auto-ramp.

 Wednesday, June 21, 2017, 14:48

TGHT stopped at 575A due to voltage limit sitting at 9V

Increased max setpoint of voltage to 14V.

Re-started auto-ramp starting at 575A.

Wednesday, June 21, 2017, 15:23  

TGHT = 600A, 8.95V

TBHT = 230A, 3.72V

IGP1 = 1.55e-6 Torr

IGP2 = 1.62e-6 Torr

OMEGA = 1538C

Increasing max setpoint of TGHT to 700A

 Wednesday, June 21, 2017, 16:21

TGHT = 700A, 10.57V

TBHT = 230A, 3.75V

IGP1 = 2.2e-6 Torr

IGP2 = 2.4e-6 Torr

OMEGA = 1730C

Increasing max setpoint of TGHT to 750A

 Friday, June 23, 2017, 15:41

TGHT = 780A, 11.77V

TBHT = 230A, 3.77V

IGP1 = 4.8e-7 Torr

IGP2 = 4.8e-7 Torr

OMEGA = 1890C

Conditioning process complete.

Initiating auto-cool at 2.0A/min for the TGHT and 1.0A/min for the TBHT.

 Monday, June 26, 2017, 10:51

Target vented in air and removed from evap2 today.

Endcaps inserted.

Target looks good!

 Friday, September 15, 2017, 09:44

Target consists of 470 discs.

Total packed length 3.4cm [exactly 7.8cm space on both sides]

Total mass g [Incl foils + Ta wire on 6 packs]

Target consists of 350 single discs and 6x20 packs of Ta discs

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

1 long Ta Heat shield on each side, not incl center block.

No endcaps inserted, no Rh foil inserted.

Loaded into evap2 yesterday.

Chamber pumped down overnight.

TBHT will be ramped up to 230A at 1.0A/min.

TGHT will be ramped up to 650A at 2.0A/min.

Final desired temperature = 1900C

OMEGA slope = 0.98

HS water valves were already open.

Tapped up manually to 40A, vacuum stable.

IGP1 = 1.1e-6 Torr

IGP2 = 7.8e-7 Torr

Initiating auto-ramp.

Vacuum limit stop at 3.0e-5 Torr, backing off at 4.0e-5 Torr.

 Monday, September 18, 2017, 08:38

TGHT = 647A, 10.04V

TBHT = 233A, 3.51V

IGP1 = 4.65e-7 Torr

IGP2 = 3.78e-7 Torr

OMEGA = 1700C

Increasing max setpoint of TGHT to 750A

 Monday, September 18, 2017, 14:49

TGHT = 760A, 11.96V

TBHT = 233A, 3.54V

IGP1 = 8.9e-7 Torr

IGP2 = 8.6e-7 Torr

OMEGA = 1905C

Conditioning process complete.

Initiating auto-cool at 2.0A/min for the TGHT and 1.0A/min for the TBHT.

 Tuesday, September 19, 2017, 10:38

Target was cooled down in sections so Yasser could take some temperature measurements with his thermocouples.

Vented in air and removed from evap2 this morning.

Target looks good.

Endcaps inserted and expanded.

Inserting Rh foil this afternoon.

 Tuesday, September 26, 2017, 10:53

Tapped up manually to 230A over the course of ~35min.

TBHT striptool = 228A, 0.33V

TBHT direct readout = 230.4A, 0.33V

Vacuum good/ stable.

Minor spike to IGP1 = 1.5e-5 Torr ~5min after reached max setpoint of 230A.

IGP1 striptool = 3e-6 Torr

IGP1 direct readout = 3.79e-6 mBar

Initiating auto-cool at 2.0A/min.

 Tuesday, April 17, 2018, 10:20

Target consists of 470 discs.

Total packed length 3.4cm [exactly 7.8cm space on both sides]

Total mass g [Incl foils + Ta wire on 6 packs]

Target consists of 350 single discs and 6x20 packs of Ta discs

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

No Heat shields.

No endcaps inserted, no Rh foil inserted.

Chamber pumped down over night.

TGHT will be ramped up to 300A at 1.0A/min.

Aurelia will take over for temp measurements.

Final desired temperature = 1900C

Vacuum limit stop at 3.0e-5 Torr, backing off at 8.0e-5 Torr.

 Thursday, April 19, 2018, 08:39

First round of temperature measurements complete.

Reached a max current of 600A, ~1700C

Cooled down overnight.

Will remove from evap2, insert endcaps, and load back in for more measurements.

 Thursday, April 19, 2018, 12:35

Vented in air and removed from evap2.

See next elog for follow up temperature measurements.