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  Evaporator_2, Page 14 of 34  Not logged in ELOG logo
ID Date Author Target Material Target Oven W.O# Sourcedown Status Subject
  332   Saturday, October 15, 2016, 12:42 Aurelia LaxdalTa41790-5LP-SISIn progressTemperature measurements for Ta#50

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.

  333   Sunday, October 16, 2016, 17:55 Aurelia LaxdalTa41790-5LP-SISIn progressTemperature measurements for Ta#50

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. 

  334   Tuesday, October 18, 2016, 09:23 Laura LambertTa41790-5LP-SISDoneTemperature measurements for Ta#50

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!


 

  340   Thursday, December 01, 2016, 16:08 Laura LambertEmpty42218-12LP-SISDonesintering TaC coating on UCx#19 container

 Thursday, December 01, 2016, 16:06

Container coated with TaC using 'flushing technique' and let dry overnight.

Cleaned ionizer tube with acetone, no coating inside ionizer tube

Wrapped with 3 x Ta heat shields, incl center block

Currently pumping down in evap2

OMEGA slope = 0.98


 Friday, December 02, 2016, 11:24

Opened up HS water valves, no leaks detected.

Tapped up manually to 35A.

Waited ~25min, vacuum stable.

IGP1 = 1.65e-6 Torr

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

Max setpoints set for 350A and 230A for the TGHT and TBHT respectively.

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


 Monday, December 05, 2016, 09:38

TGHT = 350A, 5.38V

TBHT = 230A, 4.03V

OMEGA = 1550C

IGP1 = 3.2e-7 Torr

Tapping up to 1900C...


 Monday, December 05, 2016, 14:11

OMEGA = 1905C

TGHT = 475A, 7.63V

TBHT = 230A, 4.07V

IGP1 = 8.5e-7 Torr


 Tuesday, December 06, 2016, 08:41

TGHT = 475A, 7.76V

TBHT = 230A, 4.07V

IGP1 = 3.9e-7 Torr

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


Wednesday, December 07, 2016, 08:46 

Evap2 was vented in air and opened up yesterday afternoon.

Container looks good, coating fully sintered.


 

  352   Monday, March 13, 2017, 15:34 Anders MjosTa41790-4LP-SISDoneConditioning Ta#51

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

  372   Tuesday, May 30, 2017, 14:40 Laura LambertTa42218-14LP-SISDoneConditioning Ta#52

 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.


 

  373   Monday, June 05, 2017, 15:20 Laura LambertEmpty42218-15LP-SISDoneSintering TaC coating on UCx#21 container

 Monday, June 05, 2017, 15:20

Container coated with TaC using 'flushing technique' and let dry over weekend.

Cleaned ionizer tube with acetone, no coating inside ionizer tube.

Wrapped with 3 x Ta heat shields, incl center block

Currently pumping down in evap2

OMEGA slope = 0.98

Good vac at 3.0e-5, bad vac at 4.0e-5 Torr.


 Tuesday, June 06, 2017, 10:00

First time not turning water off and flushing lines after last use.

HS water valves have remained open since the last time evap2 was used [conditioning Ta#52]

No leak check done.

Tapped up manually to 35A.

Waited ~25min

Vacuum stable.

IGP1 = 2.9e-6 Torr

IGP2 = 4.8e-6 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 350A

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 07, 2017, 09:26

TGHT = 304A, 4.46V

TBHT = 169A, 2.769V

IGP1 = 6.1e-7 Torr

IGP2 = 7.3e-7 Torr

Vacuum stable.

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


 Wednesday, June 07, 2017, 10:40

TGHT = 350A, 5.28V

TBHT = 203A, 3.39V

IGP1 = 1e-6 Torr

Increasing ramping rate for TBHT to 1.0A/min


Wednesday, June 07, 2017, 12:10 

TGHT = 350A, 5.26V

TBHT = 230A, 3.99V

IGP1 = 7.0e-7 Torr

IGP2 = 8.3e-7 Torr

OMEGA = 1600C

Vacuum stable.

Increasing max setpoint of TGHT to 400A

Re-initiating ramping rate of TGHT at 1.0A/min


 Wednesday, June 07, 2017, 15:42

Tapped up to reach final desired temperature.

TGHT = 450A, 7.28V

TBHT = 230A, 4.02V

IGP1 = 9.0e-7 Torr

IGP2 = 1.07e-6 Torr

OMEGA = 1910C

Will remain at max setpoints overnight.


 Thursday, June 08, 2017, 08:51

Remained at max setpoints for 17hrs.

TGHT = 450A, 7.28V

TBHT = 230A, 4.02V

IGP1 = 2.6e-7 Torr

IGP2 = 2.9e-7 Torr

OMEGA = 1899C

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


 Thursday, June 08, 2017, 16:28

 Vented in air and taken out this afternoon.

Container looks good!

Transferred into glove box.


 

  402   Wednesday, February 28, 2018, 15:18 Laura LambertEmpty42218-13LP-SISDoneSintering TaC coating on UCx#22 container

 Wednesday, February 28, 2018, 15:16

Container coated with TaC using 'flushing technique' and let dry.

Q-tip to plug ionizer became stuck in ionizer, removed manually with small drill bit.

Inspected ionizer with microscope, ionizer still good.

Cleaned ionizer tube with acetone.

Wrapped with 3 x Ta heat shields, incl center block

Currently pumping down in evap2

OMEGA slope = 0.98

Good vac at 3.0e-5, bad vac at 8.0e-5 Torr.


 Thursday, March 01, 2018, 10:06

HW water valves opened yesterday, no leaks detected.

IGP1 = 2.8e-7 Torr

Tapped up manually to 40A.

Waited ~3hrs

Vacuum stable.

IGP1 = 5.3e-7 Torr

IGP2 = 5.4e-7 Torr

Initiating auto ramp for TGHT @ 1.0A/min to a max setpoint of 350A

Initiating auto ramp for TBHT @ 0.5A/min to a max setpoint of 230A

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


 Thursday, March 01, 2018, 14:39

Vacuum started to climb very fast - auto-ramp was stopped.

Vacuum climbed up to IGP1 = 1.3e-4 Torr

Tapped TGHT back down to 80A from 90A, TBHT down to 50A from 60A.

Waited ~40min.

Vacuum stable, IGP1 = 2.6e-6 Torr

Restarting auto-ramp.


 Thursday, March 01, 2018, 14:54

IGP1 = 2.1e-5 Torr

Vacuum climbing quite rapidly again, stopped auto-ramp and vacuum started to drop right away.

TGHT = 100A

TBHT = 56A

Waited ~10min

IGP1 = 6.0e-6 Torr

IGP2 = 5.2e-6 Torr

Decreasing ramping rate to 0.5A/min and 0.2A/min for the TGHT and TBHT respectively, and re-initiating auto-ramp.


 Friday, March 02, 2018, 10:18

TGHT = 350A, 5.61V

TBHT = 230A, 4.04V

IGP1 = 4.3e-7 Torr

IGP2 = 3.8e-7 Torr

OMEGA = 1624C

Vacuum stable.

Increasing max setpoint of TGHT to 400A

Re-initiating auto-ramp of TGHT.


 Friday, March 02, 2018, 11:04

TGHT = 372A, 6.05V

IGP1 = 5.0e-7 Torr

Increasing ramping rate for TGHT to 1.0A/min


 Friday, March 02, 2018, 11:44

TGHT = 400A, 6.60V

IGP1 = 6.9e-7 Torr

OMEGA = 1780C

Vacuum stable.

Increasing max setpoint of TGHT to 430A

Re-initiating auto-ramp of TGHT.


 Friday, March 02, 2018, 12:17

TGHT = 430A, 7.22V

OMEGA = 1866C

IGP1 = 9.5e-7 Torr

Tapped up manually to OMEGA = 1910C

TGHT = 445A, 7.57V

TBHT = 230A, 4.07V

IGP1 = 1.1e-6 Torr

IGP2 = 9.9e-7 Torr


 Monday, March 05, 2018, 08:41

Remained at max setpoints over the weekend.

TGHT = 445A, 7.47V

TBHT = 230A, 4.06V

IGP1 = 1.87e-7 Torr

IGP2 = 1.47e-7 Torr

OMEGA = 1894C

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


 Tuesday, March 20, 2018, 14:53

Vented in air.

Container was transferred to glove box for loading ~1 week ago

Container looks good.


 

  404   Tuesday, April 17, 2018, 10:24 Laura LambertTa41177-3LP-SISDoneConditioning Ta#56 back-up target/ Temp measurements for Aurelia

 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.

HS water valves opened, no leaks detected
 
Tapped up manually to 35A
 
Vacuum stable, IGP1 = 6.5e-7 Torr
 
Initiating auto-ramp.
 
OMEGA slope = 0.98

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.


 

  405   Thursday, April 19, 2018, 12:38 Laura LambertTa41177-3LP-SISDoneRound 2. Temp measurements for Aurelia target Ta#56

 Thursday, April 19, 2018, 12:37

See elog i.d. 404 for target description and first round of heating.

Endcaps inserted and expanded.

No Rh foil inserted.

Loaded into evap2 and chamber currently pumping down.


Thursday, April 19, 2018, 14:00: water cooling lines opened. No response. Vacuum @ 1.8e-06T - AS

Thursday, April 19, 2018, 14:07: Power supplies swtiched on. - AS

  414   Tuesday, July 10, 2018, 16:43 John WongEmpty LP-SISDoneFor nano-SiC#1

Tuesday, July 10, 2018, 16:40

Container was flashed with TaC solution and let dry in air. 

No Ta heat shield is used. 

Desired temperature 1900C, ramp up TGHT accordingly. (Take note at 1500 and 1600 C).  

OMEGA slope setting = 0.98

TBHT set at 250A (as usual)

Chamber is currently being pump down.


 Wednesday, July 11, 2018, 10:54

Pressure at 4.5 e-7 Torr. 

Autoramping TGHT at 0.1A/min to reach 300A and TBHT at 0.1A/min to reach 230A. 

Once TGHT setting is reached, it will be further increased according to the temp measurement. 


 Friday, July 13, 2018, 10:57

TGHT at 300A/4.02V but temp is still too low to be detected. 

Increase TGHT to 400A, ramping at 1A/min.  TBHT is already at 230A/4.0V.

Current pressure at 4.4e-7 Torr.


 Friday, July 13, 2018, 13:09

TGHT reached 400A/5.85V, temp reading 1112C.

Ramping up to 500A


 TGHT reached 500A/7.9V.  temp reading 1250 C.

Ramping up to 600A


 Friday, July 13, 2018, 17:13

TGHT reached 600A/10.74V, temp reading 1742 C.

Ramping up to 650A


 Wednesday, July 18, 2018, 11:54

TGHT has remained at 650A/12.05V since Friday July 13.

Temperature check:

pyrometer: 1650 (250 correction) = 1900 C

OMEGA:  1-color (e= 0.32 for spectral hemispherical) = 1910 C

OMEGA: 2-color (slope @ 0.99) = 1905 C

Measurements are in agreement

Cooling TGHT at 2A/min, TBHT at 1A/min. Current pressure 3.7e-7 Torr.


 Wednesday, July 18, 2018, 13:47

TGHT at 500A, 8.4V, temp at 1600 C (4.2 kW)

TGHT at 475/7.84V, temp at 1550 C (3.72 kW - Max operating target heating power)

TGHT at 450/7.31V, temp at 1500 C (3.28 kW)

With TBHT set for 230A, usual operation setting, the temperature on the transfer tube is to exceed 2000 C.  Keeping TBHT at that setting may affect the overall temperature.

Note:  To condition the nanoSiC, it is better to keep TBHT at 0A and ramp up TGHT to 475A while monitoring the vacuum.  Then step up TBHT; any increase in vacuum would indicate a local evaporation of nanoSiC close to the ionizer. 

Temp measurement is complete, cooling down TGHT/TBHT to zero.


 Thursday, July 19, 2018, 12:23

TGHT has been at 0A for over 18 hours.  Vacuum pressure at 7e-8 Torr.

Venting chamber.


 

  415   Wednesday, July 25, 2018, 17:33 John WongEmpty43044-2LP-SISDoneTaC coating/sintering for UCx#24

Wednesday, July 25, 2018, 17:32

Container is coated with TaC and wrapped with 3 layers of Ta heat-shields.

Desired sintering temperature ~1900 C, TGHT is estimated to be ~ 445A (3.3 kW), TBHT set to 230A (as usual).

OMEGA slope set to 0.99

Good vac = 3.0 e-5 Torr, Bad vac = 5.0 e-5 Torr.

Chamber is currently being pumped down.


 Friday, July 27, 2018, 10:32

Vacuum at 9.9 e-7 Torr. 

Autoramp TGHT at 1A/min to 300A and TBHT at 1A/min to 230A. Will monitor temp and adjust TGHT to reach the desire temp.


 Friday, July 27, 2018, 16:31

TGHT reached to 1500 C, and TBHT at 230A, Temp at 1480 C, pressure at 2.e-6 Torr.

Autoramp TGHt at 1A/min to 400A.  Continue monitoring temp.


 Saturday, July 28, 2018, 12:41

TGHT at 400A/6.2V. Temp at 1730 C.  Pressure 7.4 e-7 Torr.

Tapped up TGHT to 450A/7.2V, temp at 1891 C. Holding at this current... Pressure coming down from 1.2e-6 Torr.


 Monday, July 30, 2018, 22:40

Target temp has been held at 1880 C, TGHT at 450A/7.57V, TBHT 230/4.18V, vaccum at 3.8 e-7 Torr. 

Cooling TGHT and TBHT at 2A/min and 1A/min, respectively. 


 Tuesday, July 31, 2018, 10:23

TGHT/TBHT at 0A.  Pressure at 1.5e-7 Torr. 

Process completed. 

Venting chamber.

Target containers looks good.  Transferred to Ar glovebox.


 

  416   Monday, August 20, 2018, 18:10 John Wongnp-SiC43044-1LP-SISDonenano-SiC final conditioning

Monday, August 20, 2018, 17:58

14.9 g of np-SiC fibrous target discs are loaded into the container (previously coated with TaC and sintered, see elog ID 414).

Total loaded length 9.5 cm. 

A 1.5" width graphite sheet is used as under layer to prevent TaC diffused to the discs; this was observed during the heat treatment, (see dropbox SEM images).

Both end caps are in.  With ionizer pointing out, right cap is expended BUT NOT left cap - will need to expend this after the conditioning.

No Ta heat-shield is used.

Final conditioning temperature:  1500 C (As per e-log 414, TGHT = 450A/7.31V, 3.28kW) 

Keeping TBHT at 0A for now - will ramp up after TGHT reach to the desired temperature. 

OMEGA slope set at 0.99

Good vac = 3.0e-5 Torr,

Bad vac = 5.0e-5 Torr.


 Tuesday, August 21, 2018, 10:24

Pressure at 1.2e-6 Torr. 

Initiated autoramping at 2A/min for TGHT to reach 400A - monitoring temp and vacuum.

TBHT set at 10A. 


 Tuesday, August 21, 2018, 15:13

Temp reached to 1350C. TGHT at 400A/6.7V. Pressure at 1.9e-6 Torr after holding at the temp for 100 min.


 Tuesday, August 21, 2018, 15:28

Tapped up TGHT to 450A/7.8V (3.5kW).  Temp measured at 1465 +/- 5 C.  Pressure coming down from 3.5 e-6 Torr.


 Tuesday, August 21, 2018, 15:32

Tapping up TBHT to 230A


 Tuesday, August 21, 2018, 16:25

TBHT at 230A/4.33V.  Pressure started to increase from 150A, and reached to 3.3e-6 Torr after TGHT reached to the setting.

Temperature measured at 1475 C +/- 5C.  Holding at this temperature until vacuum comes to stabilization (est.2-3 hours)


 Tuesday, August 21, 2018, 16:45

Checked with Mikron (slope set at 0.99); temp on left end-cap measured at 1490 +/- 20C (that's close enough).  Temp on ionizer tube about 1900C


 Tuesday, August 21, 2018, 22:12

Pressure at 1.7e-6 Torr.  Temp holding at 1480C, TGHT at 450/7.7V, TBHT 230A/4.27V.

Cooling down at 2A/min for TGHT and 1A/min for TBHT


 

  417   Tuesday, September 04, 2018, 17:04 John WongEmpty LP-SISProblemsTaC coating/sintering for UC target container

Tuesday, September 04, 2018, 16:58

Container is coated with TaC and wrapped with Ta heat-shield ( 3 layers)

Desired temp = 1900 C (expected TGHT ~445A/7.5V), TBHT will be set fixed at 230A (max).

Good vac at 3.00-5 Torr

Bad vac at 5.0e-5 Torr.

Chamber is currently being pumped down


 Wednesday, September 05, 2018, 10:53

Pressure at 9.5-7 Torr. 

Auto ramping TGHT at 1A/min to reach 400A, and TBHT at 1A/min to reach 230A.


 Wednesday, September 05, 2018, 17:52

Problem with TGHT readback vs setpoint.  TGHT ramped up to 400A, temp measured at 1830C.  However, the setup remained at 228A (see attachment).  The autoramping program only sees the readback; in this case, the TGHT would continue to keep ramping up until the target breaks.  The autoramping program has stopped just in time. 

TGHT stepped down to 400A (setpoint), readback at 206A/6.59V.  TGHT at 230A/4.16V.  Temperature holding at 1783C. 

Control has been informed.


 Thursday, September 06, 2018, 10:54

Target temp holding at 1773C.  Pressure at 8.5e-7 Torr. 

Ramping down TGHT and TBHT, and inspect the container later. 

Problem with the TGHT readback/setpoint will need to be investigated.


 Friday, September 07, 2018, 16:03

Target container is nicely sintered.

Awaiting for Control group to investigate with the problem on TGHT readback/setpoint. 


 

Attachment 1: TGHT-Current_error.JPG
TGHT-Current_error.JPG
  420   Thursday, October 25, 2018, 15:37 Marla CervantesTaC43044-7LP-SISDoneTaC coating/sintering for graphite insert test

 Thursday, October 25, 2018, 10:36

Container is coated with TaC and wrapped with Ta heat-shield (3 layers)

Desired temp = 1900 C (expected TGHT ~445A/7.5V), TBHT will be set fixed at 230A (max).

Chamber is currently being pumped down


 Friday, October 26, 2018, 08:40

Pressure at IGP1 1.06e-6 Torr. 

Tapped up TGHT and TBHT manually to 40 A

Waited 1 hr for vacuum to stabilize.

IGP1 = 8.9e-6 Torr

Good vac at 3.00-5 Torr

Bad vac at 5.0e-5 Torr.

Initiating auto ramp for TGHT @ 1 A/min to a max setpoint of 350 A

Initiating auto ramp for TBHT @ 0.5 A/min to a max setpoint of 230 A

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


 Friday, October 26, 2018, 10:46

At 62 A, the vacuum overpassed the "Bad vacuum " limit and the current reduced to 54 A.

when the pressure returned to the "Good vac" limit the ramping started automatically.


Friday, October 26, 2018, 16:59

TGHT= 450 A, Temperature = 1878 C

Ramping rate increased to 1A/min for the TBHT.

Tapped manually to 454 A, Temperature 1880 C.


Saturday, October 27 2018, 10:00 

Ramping down to 0 A @ 2 A/min.


Monday, October 29, 2018, 12:39

 Venting EVAP2, TaC coat sintering completed.

Attachment 1: 181027-TaContainer-sintering.jpg
181027-TaContainer-sintering.jpg
  427   Friday, January 18, 2019, 15:11 Darwin Ortiz RosalesEmpty43044-5LP-SISDoneTaC coating/sintering (training/online use)

Friday, January 18, 2019, 15:00

Container was coated with TaC and wrapped with 3 Ta heat shields.

Desired temp = 1900 C, Omega slope set = 0.990, Auto ramping TGHT at 1A/min to reach 400A, TGHT will be tapped up accordingly to reach desired Temp.

TBHT will be set fixed at 230A (max). TBHT at 1A/min to reach 230A.

Good vac at 3.00-5 Torr

Bad vac at 5.0e-5 Torr.

Chamber is currently being pumped down.  Sintering will proceed next week.


 Monday, January 21, 2019, 10:17

Current pressure at IGP1 = 1.31e-7 Torr

Manual tapping to 50A on TBHT and TGHT

TBHT 38.75A, 0.41V

TGHT 37.5A, 0.07V

waiting for pressure to stabilize.

pressure  IGP1 8.0 e-7 Torr

Auto ramping TGHT at 1A/min to reach 400A, and TBHT at 1A/min to reach 230A.


 Tuesday, January 22, 2019, 09:34

TGHT reached 400A , 1800 C, however temperature dropped to 1785 C.

TGHT increased to 444A manually.  Temperature stabilized at 1880 C.  

After 10 hours, TGHT was ramped down @ 2A/min and TBHT @1A/min

Tuesday, January 22, 2019, 14:36: Evap 2 PS off. Turbo off (Around 14:10) Vented Evap 2 and removed the target container with Darwin. - AS.  

 

 

  434   Monday, March 18, 2019, 15:58 Darwin Ortiz RosalesZrC43044-5LP-SISDoneSintering ZrC

Monday, March 18, 2019, 15:51

Total number of foils: 555

Total mass of material including graphite foils: 478 grams

Total length packed 14.2 cm

container has 3 Ta heat shields.

No endcaps inserted to facilitate outgassing

Two TaC coated Ta wire springs inserted at either end to allow for ZrC expansion.

5 extra foils tucked beneath each spring for QC; total mass (10 discs) =1.0160 g

Desired temp = 1900 C, Auto ramping TGHT at  0.1 A/min to reach 280A A (Omega slope set = 0.990, approx 1400 C, Elog#427),  TGHT will be tapped up accordingly to reach desired temperature. 

TBHT will be set fixed at 230A (max). TBHT at 0.1 A/min to reach 230A.

Good vac at 3.00-5 Torr

Bad vac at 5.0e-5 Torr.

Currently being pumped down.


 Tuesday, March 19, 2019, 08:57

Current pressure IGP1 = 5.24e-07 Torr

Manually tapping to 40A on TBHT and TGHT

At 20 A IGP1 pressure trending up.  Will leave at 20A until trending down.

Pressure @ 20 A set, peaked ~1.8e-06 Torr after 1 hour


Tuesday, March 19, 2019, 10:32

Tapping manually to 50 A on TBHT and TGHT while monitoring IGP1 pressure

Tapped to 25 A and IGP1 pressure trending up.  Will allow to stabilize.

Tuesday, March 19, 2019, 11:34

Pressure stabilized at ~3.25e-06 Torr

Tapped up to 30 A on both TGHT and TBHT

Pressure stabilized at ~6.6e-06

Tapped up to 34A on both TGHT and TBHT

Pressure stabilized at ~1.2e-05 Will allow to drop before proceeding


 Tuesday, March 19, 2019, 13:43

Tapped up to 40A waiting for pressure to stabilize

Pressure shot up ~8.5e-05, therefore tapped down TGHT to 35A (At 35A TGHT current value fluctuates, probably better to ramp up to 36A)

Will let pressure drop before proceeding with TGHT heating

Ramped TGHT to 36A, IGP1 pressure still trending down and current measurements stable.

 Starting autoramp at 0.3A/min for both TGHT and TBHT until 280A and 230A respectively

Initial TGHT Current: 33.6A, 0.05V

Initial TBHT Current: 38.6A, 0.48V

IGP1 = 4.9e-05 Torr


Wednesday, March 20, 2019, 09:41

 TGHT has only ramped to 45.7 A, 0.085V

TBHT has only ramped to 50.2A, 0.62V

IGPI pressure ~4.0 e-5 Torr

Stopping ramp and monitoring pressure to see if it drops appropriate levels.

 


Wednesday, March 20, 2019, 14:10  

IGP1 pressure = 7.6e-06 Torr

TGHT 47.7Z, 0.16V

TBHT 50.1A, 0.63V

Autoramp at 0.1A/min both TGHT and TBHT to 280A and 230A respectively.


 Thursday, March 21, 2019, 08:12

IGP1 = 3.1e-05 Torr

TGHT = 51.4 A, 0.18V

TBHT=61.9A, 0.87V

Stopped autoramp

Manually ramping TGHT and TBHT while monitoring pressure

 Rampted up TGHT to 54A (reading 65 A), 0.5V and TBHT to 68A, 0.9V

Allowing pressure to stabilize


Manually tapped TGHT to 80A, .81V

Manually tapped TBHT to 90A, 1.3V

IGP1 = .0002 Torr

Will leave over night to allow pressure to drop


Friday, March 22, 2019, 08:17

IGP1 = 6.6e-06

TGHT = 88.8A, 0.81V

TBHT = 90.1A, 1.3V

Will manually tap ~100A on both TBHT and TGHT

Friday, March 22, 2019, 12:18

IGP1 = 1.28e-05 Torr

TGHT = 100.9A, 1.0V

TBHT = 101.2A, 1.5V

will allow pressure to drop slightly the autoramp at 0.1A/min for both TGHT and TBHT until 280A and 230A respectively


Friday, March 22, 2019, 14:51

IGP1= 7.4 e-06 Torr

TGHT = 100.8A, 1.0V

TBHT= 101.5A, 1.5V

Started autoramp at 0.1A/min for both TGHT and TBHT until 280A and 230A respectively


Tuesday, March 26, 2019, 08:18

IGP1 oscillated around ramping trip point 3.0e-05 while current slowly ramped to 280A (reached sometime during the night).

IGP1= 7.8e-06 Torr

TGHT= 283.4A, 4.2V

TBHT= 233.1A, 4.1V

Will continue ramp TGHT @0.2A/min up to 400A  (Omega slope set = 0.990, approx 1800 C, Elog#427)


Wednesday, March 27, 2019, 09:39

Target has been at 400A, OMEGA ~1400C since ~7pm of previous evening

TGHT = 400.2A, 6.45V

TBHT= 233.1A, 4.16V

IGP1= 3.1e-07 Torr

Autoramp TGHT to440A @0.2A/min

 Stopped autoramp at TGHT = 427.4 A and 7.00V, OMEGA= 1492 C

Wednesday, March 27, 2019, 14:14

Restarted TGHT autoramp @.2A/min up to 440A


Friday, March 29, 2019, 12:06

Changed OMEGA slope to 1.09 after checking with the analog pyrometer

IGP1 = 1.65e-07 Torr

TGHT = 441.3A, 7.5V

TBHT= 233.0A, 4.2V

Tapping TGHT to 450A @ ~1A/min while monitoring pressure

TGHT remained at 451A, 7.8 V  and  TBHT at 233.2A, 4.2 V,  for 10.5 hours while OMEGA Temperature ~1810 C.

Ramp-down was initiated with IGP1 = 1.7e-07 Torr

Ramp rate = 2A/min for TGHT and 1/min for TBHT


 Monday, April 01, 2019, 08:53

TGHT = 0A, 0.05V

TBHT= 0.01A, 0V

IGP1= 4.05e-08 Torr

Unloading Target


Target Final weight = 473 g

% Mass of ZrC+C+organics lost = 14.20 % compared to 13.95% theoretical organics content.

Final weight of 10 discs = 0.9250 g

% mass lost on this discs = 13.66%

The tube was slightly bent along the short axis

The discs expanded but more towards one side (possibly due to discrepancy in spring strength).

 One protective graphite disc added to each end

One end cap on each end

Attachment 1: IMG_3070.JPG
IMG_3070.JPG
Attachment 2: IMG_3066.JPG
IMG_3066.JPG
  440   Tuesday, April 23, 2019, 13:55 Aaron SchmidtTa43044-4LP-SISIn progressConditioning Ta#58

Ta#58 LP-SIS target description:

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.025mm

Target density =  14.16 g/cm3

Target length = 3.4 cm

Total Mass =  48.138 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  464 g

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

End caps installed (not yet expanded). No Ta heat shield added.


Tuesday, April 23, 2019, 13:54: Roughing. 

Tuesday, April 23, 2019, 14:01: Turbo pump started. 

Tuesday, April 23, 2019, 14:09: Turbo pump at speed. 


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.

Wednesday, April 24, 2019, 08:38: Power / sources on. 

Wednesday, April 24, 2019, 08:43: TGHT manually to 40A. Vacuum @ 1.87e-07T.

Wednesday, April 24, 2019, 08:45: Auto-ramping TGHT / TBHT @ 2 / 1 A per min to 350 / 180 A. 

Slope found / set. Slope = 0.98. Laser on target, OK.

Wednesday, April 24, 2019, 11:58: Vacuum @ 4.45e-07T. Temp @ 1120 deg C. TGHT / TBHT @ 350 / 180 A.

Wednesday, April 24, 2019, 12:02: Auto-ramping TGHT / TBHT @ 2 / 1 A per min to 650 / 230 A.   

Wednesday, April 24, 2019, 14:27: Halted auto ramping briefly. Set auto-ramping TGHT @ 2 A per min to 630 A .

Wednesday, April 24, 2019, 14:32:  TGHT / TBHT @ 630 (627.9) / 230 (233.3) A.

Vacuum @ 1.15e-06T. Temp @ 1840 deg C. Hold.


Thursday, April 25, 2019, 06:59: Vacuum @ 2.74e-07T. Temp @ 1860 deg C. Hold. 

Thursday, April 25, 2019, 08:05: Auto-ramping TGHT @ 2 A per min to 640 A.

Thursday, April 25, 2019, 08:13: TGHT / TBHT @ 640 (636.9) / 230 (233.16) A.

Vacuum @ 9.96e-07T. Temp @ 1878 deg C.

Thursday, April 25, 2019, 08:15: Auto-ramping TGHT @ 2 A per min to 645 A.  

Thursday, April 25, 2019, 08:20: Auto-ramping TGHT @ 2 A per min to 650 A.   

Thursday, April 25, 2019, 08:24: Vacuum @ 9.96e-07T. TGHT / TBHT 653 (650.3) / 230 (233.16) A. TGHT Voltage= 12.760V. Omega: 1902-1903 deg C. Desired temperature = 1900C reached. 

Thursday, April 25, 2019, 14:00: Begin auto-cooling TGHT / TBHT @ -2 / -1 A per min.


Friday, April 26, 2019, 10:29: Power/heaters off. Turbo pumps off. 

Friday, April 26, 2019, 10:42: Venting. 

Attachment 1: Ta#58_Loading_data.pdf
Ta#58_Loading_data.pdf
Attachment 2: Ta#58_Evap_2_Conditioning..docx
  441   Tuesday, April 30, 2019, 09:35 Darwin Ortiz RosalesEmpty43044-6LP-SISDoneTaC coating/sintering

Tuesday, April 30, 2019, 09:33

Container was coated with TaC and wrapped with 2 Ta heat shields.

Desired temp = 1900 C, Omega slope set = 0.990, Auto ramping TGHT at 1A/min to reach 400A, TGHT will be tapped up accordingly to reach desired Temp.

TBHT will be set fixed at 230A (max). TBHT at 1A/min to reach 230A.

Good vac at 3.0e-5 Torr

Bad vac at 5.0e-5 Torr.

Chamber is currently being pumped down (since yesterday evening).


Tuesday, April 30, 2019, 10:25 

Current pressure at IGP1 = 5.17e-7 Torr

Manual tapping to 40A on TBHT and TGHT

TBHT 38.59A, 0.43V

TGHT43.69, 0.23V

waiting for pressure to stabilize.


 Tuesday, April 30, 2019, 15:15

Current pressure IGP1= 5.29e-07 Torr

Auto ramping TGHT at 1A/min to reach 400A, and TBHT at 1A/min to reach 230A.


Wednesday, May 01, 2019, 08:41

Target current of 400A reached around 00:19 am

Will tap up to 444A on TGHT as projected from plot of temperature vs current (attachment 1)

Current IGP1=5.91e-07 Torr


Wednesday, May 01, 2019, 09:54

At 444A 1900C not reached.  Continue tapping to 1900C (attachment 2)

1900 C reached at 459 A on THGT.

will leave at 1900C for 4 hours.


 Wednesday, May 01, 2019, 14:21

IGP1= 6.7e-7 Torr

After 4.5  hours, TGHT was ramped down @ 2A/min and TBHT @1A/min overnight


Thursday, May 02, 2019, 10:46

 Vented Evap 2 and removed the target container.

Attachment 1: 43044_6a.png
43044_6a.png
Attachment 2: 43044_6b.png
43044_6b.png
  449   Monday, June 17, 2019, 17:09 Marla Cervantes 49044-9LP-SISDoneTarget container calibration/conditioning

Monday, June 17, 2019, 17:04

A LP-SIS target container  was wrapped with 3 heat shielding layers,

and an empty graphite insert of 17.4 g was introduce in it.

The system was loaded in the EVAP2 and the chamber is currently being evacuated.

The container will be heated to 2000 C in order to correlate the temperature, current and voltage,

as well as to condition the container.


 Tuesday, June 18, 2019, 07:28

The TGHT and TBHT current will be tapped to 40 A manually

Autoramp will be set to TGHT 1A/min to 500 A

and TBHT 0.5A/min to 230 A.


Tuesday, June 18, 2019, 20:51

After 2 hours at ~1800 C the container was cooled,

IGP1 = 1.2e-6 Torr

TGHT = 7.16 V, 447.094 A

TBHT = 4.19 V, 233.43 A

Temperature 1793 C

 Auto ramp TGHT = -2 A/min, TBHT = -1A/min 

ELOG V2.9.2-2455