Tuesday, November 10, 2015, 14:20

Container previously sintered with TaC coating and temperature measurements taken [see elog ID# 256, 257, 258]

3x Ta heat shields

2 packs of 5 SiC discs ~2inches from the end of the right side wrt ionizer tube into page.

Loaded into evap2 and currently pumping down.

see photos attached.

 Monday, November 16, 2015, 11:24

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

Tapped up manually to 35A.

Vacuum stable.

IGP1 = 3.4e-7 Torr.

Initiating auto-ramp at 1.0A/min and 0.5A/min for the TGHT and TBHT respectively.

Final setpoints: 250A for the TGHT and 230A for the TBHT

Monday, November 16, 2015, 13:29

Vacuum too high.

IGP1 = 2.9e-5 Torr.

Decreasing ramping rate down to 0.5A/min and 0.2A/min for the TGHT and TBHT respectively.

 Tuesday, November 17, 2015, 09:12

IGP1 = 1.45e-7 Torr.

TGHT = 250A, 3.28V

TBHT = 230A, 3.33V

OMEGA = 1194C

Tapping up manually to 1900C

 Tuesday, November 17, 2015, 11:22

Tapped up manually to 1800C, realized SiC should only be tapped up to 1700C, backed off immediately down to 415A from 460A/ 1800C.

See attachment for photo of striptool/ time spent above 1700C [~20min].

 Tuesday, November 17, 2015, 15:46

TGHT remained at 1700C for ~4hrs.

TGHT = 420A, 6.44V.

IGP1 = 2.3e-7 Torr.

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

See attachment for raw data of temperature measurements.

 Wednesday, November 18, 2015, 13:32

Vented in air and took out this morning.

Looks good, no visual changes with the container.

 Data from thermocouple attached. Raw data and Excel sheet with plot.

Monday, January 11, 2016, 15:25

Small center block LP-SIS container previously sintered with TaC coating

3x Ta heat shields

Container is loaded with 260 discs of SiC with a total length of 8.5cm

Loaded into evap2 and pumped down this morning

HS water valves opened up, no leaks detected

Tapped up manually to 30A

Vacuum stable

IGP1 = 1e-6 Torr

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

Final setpoints: 400A for the TGHT and 230A for the TBHT

Final desired temperature: 1700C

 Tuesday, January 12, 2016, 12:55

TGHT = 138A, TBHT = 80A

IGP1 =  7.7e-6 Torr.

Vacuum stable and coming down.

Increasing ramping rate to 0.5A/min and 0.2A/min for the TGHT and TBHT respectively.

 Wednesday, January 13, 2016, 09:32

TGHT reached 400A ~11.5hrs ago

TBHT reached 230A ~8hrs ago

OMEGA = 1400C

IGP1 = 1.75e-7 Torr

Tapping up manually to 1700C...

 Wednesday, January 13, 2016, 10:14

Previous temperature measurement of OMEGA = 1400C is wrong due to window port being coated with SiC [see attached photos]

Will remain at TGHT = 420A for 4hrs then cool down this afternoon

Wednesday, January 13, 2016, 14:29

Remained at max setpoints for 4.5hrs.

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

 Thursday, January 14, 2016, 09:47

Vented in air and opened up this morning

Target looks good

Will insert and expand endcaps this afternoon

 Friday, February 12, 2016, 11:01

Container coated with TaC with new method - ends tapped off,  liquid poured/swirled around container, then poured back out - 'flushing technique'.

Container wrapped with 3 x Ta heat shields, incl center block - new method of each layer being one long single Ta foil covering entire container incl center block

IGP1 = 6.3e-7Torr

HS water valves opened, no leaks detected.

Tapped up manually to 35A.

Waited ~20min.

Vacuum stable, IGP1 = 1.3e-6 Torr.

Initiated auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively with final setpoints of 400A and 230A.

 Monday, February 15, 2016, 08:56

IGP1 = 3.9e-7 Torr.

TBHT = 230A, 4.0V

TGHT = 400A, 6.58V

OMEGA = 1766C

Tapping up manually to 1900C...

 Monday, February 15, 2016, 10:18

IGP1 = 5e-7 Torr

TGHT = 450A, 7.55V

OMEGA = 1913C

 Monday, February 15, 2016, 14:30

IGP1 = 4.9e-7 Torr.

TGHT = 450A, 7.55V.

Material remained at ~1910C for ~4hrs.

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

 Tuesday, February 16, 2016, 14:17

vented in air and opened up this morning.

target container sintered nicely.

Thursday, February 25, 2016, 18:04 Wednesday, February 24, 2016, 17:29

Heat treatment of 2 bullet-shaped Nb samples in a LP-SIS container; it is just that we don't have a target boat. 

Container is wrapped with 12" in total length.  A strip of Nb foil is used as an underlayer for the samples to sit on top. 

Chamber has been pumped down and current vacuum at 1e-6 Torr. 

HS water check - good.

Target temperature 1400C

Ramping up to 250A; this should get to ~1300C.  Will let it heat for over night and step up to 1400C tomorrow. 

 Wednesday, February 24, 2016, 17:59

I'm stopping the heating process because the camera is not working.  I can't monitor the temperature.  Tried to fit the camera; don't now why it fails to connect to the server. 

Will look in to it tomorrow...

 Thursday, February 25, 2016, 08:17

Initiated auto ramping TGHT at 2A/min.

Thursday, February 25, 2016, 17:33  

Finally the camera is fixed.  

Current temperature is at 1126C, TGHT at 250A.  Will step up to reach 1400C. 

Thursday, February 25, 2016, 18:04  

TGHT stepped up to 335A to reach 1400C.  (see attachment) 

Will heat this for few hours and cool it at around 11pm tonight.

 Thursday, February 25, 2016, 22:19

Samples have been heated over 4.5 hours. 

Initiated cool down at 1A/min.

 Friday, February 26, 2016, 15:43

done! all good.

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).

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.

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

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.

 Monday, June 27, 2016, 11:07

Container coated with TaC using 'flushing technique'.

Wrapped with 3 x Ta heat shields, incl center block - new method of each layer being one long single Ta foil covering entire container incl center block

Currently pumping down in evap2

 Monday, June 27, 2016, 13:23

HS water valves opened

Tapped up manually to 35A

Waited ~1hr, vacuum stable

IGP1 = 1.8e-6 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 400A

Initiating auto ramp for TBHT @ 0.1A/min to a max setpoint of 230A

Once max setpoints achieved, will tap up manually to final desired temperature of 1900C

 Wednesday, June 29, 2016, 11:33

IGP1 = 1.9e-7

TGHT = 400A, 6.0V

TBHT = 223A, 3.9V

OMEGA = 1885C

Remained at these settings for ~13hrs

Increased TBHT max voltage to 4.3V to achieve 230A

TBHT = 230A, 4.1V

OMEGA = 1890C

Tapped up to TGHT = 405A, 6.17V to achieve 1900C...OMEGA reached 1915C

Lowered TGHT to = 403A, 6.12V

OMEGA = 1905C

Measured ~1870C with the mikron, same window the OMEGA measurements are taken out of.

IGP1 = 2.1e-7

 Thursday, June 30, 2016, 08:44

TGHT = 403A, 6.07V

OMEGA = 1886C

Tapped back up to 1900C

TGHT = 410A, 6.22V

OMEGA = 1911C

Thursday, June 30, 2016, 16:01

OMEGA = 1911C

Container has remained at ~1900C for ~1.5 days

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

 Monday, July 04, 2016, 09:59

Vented in air and opened up this morning.

Container looks good.

Confirmed coating fully sintered with J.Wong.

Photos attached.

 Wednesday, September 28, 2016, 17:08

Container coated with TaC using 'flushing technique' today, cleaned ionizer tube with acetone, no coating inside ionizer tube

Dried by blowing air into tube

Wrapped with 3 x Ta heat shields, incl center block - new method of each layer being one long single Ta foil covering entire container incl center block

Currently pumping down in evap2

 Thursday, September 29, 2016, 11:11

HS water valves opened

Tapped up to 35A

Waited ~45min, vacuum stable

IGP1 = 1.4e-6 Torr

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

Max setpoints for TGHT = 350A and TBHT  = 230A

Once max setpoints achieved, will tap up manually to final desired temperature of 1900C

 Friday, September 30, 2016, 10:51

IGP1 = 7.8e-7 Torr

TGHT = 315A, 4.57V

TBHT = 174A, 2.8V

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

 Friday, September 30, 2016, 11:44

Changed OMEGA slope to 0.98

IGP1 = 1e-6 Torr

TGHT = 350A, 5.2V

TBHT = 201A, 3.4V

Increasing ramping rate of TBHT to 1.0A/min

OMEGA = 1625C / MIKRON = 1625C

 Friday, September 30, 2016, 15:45

IGP1 = 1.1e-6 Torr

TGHT = 430A, 6.79V

TBHT = 230A, 4.07V

OMEGA = 1903C

Will remain at max setpoints over weekend.

See attached link for raw data of manual tap up.

Also see attached photos of screenshots showing oval - not circular - tube of target container at two different temperatures...

 Monday, October 03, 2016, 13:28

IGP1 = 1.79e-7 Torr

TGHT = 430A, 6.87V

TBHT = 230A, 4.06V

OMEGA = 1892C

MIKRON = 1847C

Attached is a picture taken through the MIKRON, the slight oval shape appears to be a minor bend in the target container:

With the ionizer tube facing into the page, the bend appears to be in the center with both ends of the container bent slightly towards the page

This possible bend in the container gives the appearance of the oval shape through the camera while it is being heated, due to the angle of the camera

Remained at max setpoints over weekend.

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

 Tuesday, October 04, 2016, 13:40

Vented in air and opened up this morning.

Container done, TaC coating looks good.

Waiting further inspection...

 Tuesday, October 04, 2016, 14:48

Container placed on jig and inspected.

Approved to go ahead for use online by Anders and Friedhelm.

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.