ID |
Date |
Author |
Target Material |
Target Oven W.O# |
Source |
Status |
Subject |
85
|
Thursday, January 23, 2014, 16:29 |
Laura Lambert | Empty | 40282-1 | TARGET BOAT | In progress | Sintering Ta target boat with TaC coating | Thursday, January 23, 2014, 16:26
A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos].
The target boat was wrapped with 3-layers of Ta-heat shield.
The boat was installed in Evap#1, chamber is currently being pumped down overnight.
|
86
|
Friday, January 24, 2014, 14:45 |
Laura Lambert | Empty | 40282-1 | TARGET BOAT | In progress | Sintering Ta target boat with TaC coating |
Laura Lambert wrote: |
Thursday, January 23, 2014, 16:26
A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos].
The target boat was wrapped with 3-layers of Ta-heat shield.
The boat was installed in Evap#1, chamber is currently being pumped down overnight.
|
Friday, January 24, 2014, 14:42
Chamber was pumped down to 5.9e-6 Torr overnight.
TGHT was stepped up to 35A.
Waited 20min, vacuum consistently stable, auto-ramp initiated at 0.2A/min and max setpoint to 580A.
Good vacuum: 5e-5 Torr. Bad vacuum: 6e-5 Torr.
|
87
|
Monday, January 27, 2014, 11:03 |
Laura Lambert | Empty | 40282-1 | TARGET BOAT | Done | Sintering Ta target boat with TaC coating |
Laura Lambert wrote: |
Laura Lambert wrote: |
Thursday, January 23, 2014, 16:26
A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos].
The target boat was wrapped with 3-layers of Ta-heat shield.
The boat was installed in Evap#1, chamber is currently being pumped down overnight.
|
Friday, January 24, 2014, 14:42
Chamber was pumped down to 5.9e-6 Torr overnight.
TGHT was stepped up to 35A.
Waited 20min, vacuum consistently stable, auto-ramp initiated at 0.2A/min and max setpoint to 580A.
Good vacuum: 5e-5 Torr. Bad vacuum: 6e-5 Torr.
|
Monday, January 27, 2014, 11:01
TGHT reached 580A over the weekend.
TGHT auto-cooldown initiated at 2.0A/min.
Tuesday, January 28, 2014, 15:51
Chamber cooled down overnight, vented and opened up this morning.
Target boat looks good! [See attached photos]
|
88
|
Wednesday, February 05, 2014, 14:29 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_01 | Wednesday, February 05, 2014, 14:13
1st attempt:
UO2/C green was prepared on Feb 4, 2014 [tues]. The slurry was cast on a piece of glass coated with WD40.
The cast was let dry until Feb 5, 2014 [wed] - the cast was cracked and too much WD40 was used because there were oil patches [see attached photo: cast1]; however, the cast peeled off the glass very nicely.
2nd attempt:
Due to cracked and oil patches, decided to re-mill and try again.
Scrapped off cast, added the additional compositions:
1g PEG400, 1g Glycerol, 14g 5% PVA, 2mL n-butanol, 2mL methanol, 20mL DI H2O
Re-milled for 3 hours and cast onto glass coated with slightly less WD40.
Before even allowing cast to dry, can see the slurry is far too thick. The slurry would not spread at all.
Will let dry overnight and attempt to scrape off and re-mill with more DI H2O tomorrow.
Thursday, February 06, 2014, 10:57
Second cast was a lot thicker, but peeled off the glass nicely, will not re-cast. [see attached photo: cast2]
Some material was stuck to the WC jar wall and the balls, same as previously.
Initial UO2 powder used = 50.24g (Inventory R-00855A UO2 + bottle = 695.52g before use)
Graphite powder used = 10.05g
1st attempt = did not measure
2nd attempt dried UO2/C + organic mass = 46.56g (expecting to lose more uranium from re-casting a second time/ sticking to jar + balls)
The green was rolled up and wrapped in a piece of graphite sheet. [see attached photo: target boat]
The Ta-target boat was wrapped with 3-layers of heat shield and installed in EVAP1.
Chamber us currently being pumped down.
Target will be ramped up to 520A at the rate of 0.1A/min.
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Friday, February 07, 2014, 10:15
Chamber has pumped down overnight. IG1 currently @ 2.4e-6 Torr.
Stepped up TGHT to 35A/0.187V.
Friday, February 07, 2014, 12:02
TGHT sat at 35A for 2hrs. Pressure took a while to fully stabilize, currently sitting at 1.9e-5 Torr [see attached photo: pre auto-ramp]
Initiating auto-ramping.
Monday, February 24, 2014, 13:37
TGHT reached max setpoint of 520A on friday night.
Power = 5.45V
IGP1 = 3.2e-6 Torr.
Carbonization process is complete.
Initiating auto-cooling at 2.0A/min.
Thursday, October 09, 2014, 13:41
update rename: batch #09 - 02062014 to UC2Flk_01
|
89
|
Tuesday, March 04, 2014, 15:48 |
John Wong | | | TARGET BOAT | In progress | Re-sinterring end caps | Tuesday, March 04, 2014, 15:43
Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)
The endcaps are inserted in a target boat wrapped with 3 heat-shields.
Chamber is currently being pumped down.
TGHT will be rampped up to 580A and heat for >4hrs.
|
90
|
Wednesday, March 05, 2014, 10:30 |
Laura Lambert | | | TARGET BOAT | In progress | Re-sinterring end caps |
John Wong wrote: |
Tuesday, March 04, 2014, 15:43
Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)
The endcaps are inserted in a target boat wrapped with 3 heat-shields.
Chamber is currently being pumped down.
TGHT will be rampped up to 580A and heat for >4hrs.
|
Wednesday, March 05, 2014, 10:20
IGP1 = 9.2e-7 Torr.
TGHT was stepped up to 35A and stabilized after half an hour.
Auto-ramp initiated at 2.0A/min, max setpoint = 580A.
Vacuum started to climb too fast, auto-ramp aborted.
Will step up manually...
Wednesday, March 05, 2014, 12:18
Slowly stepped up to 100A manually.
Vacuum stable.
Initiating auto-ramp at 1.0A/min
Wednesday, March 05, 2014, 13:17
IGP1 = 9.8e-6 Torr.
Current = 200A
Vacuum stable.
Stepping ramping rate up to 2.0A/min.
Wednesday, March 05, 2014, 16:12
IGP1 = 4.6e-5 Torr, TGHT = 548A
Stopped auto-ramp to allow vacuum to settle back down.
Waited ~10min
IGP1 = 3.6e-5 Torr
Re-initiating auto-ramp at 2.0/min
|
91
|
Wednesday, March 05, 2014, 23:05 |
John Wong | | | TARGET BOAT | Done | Re-sinterring end caps |
Laura Lambert wrote: |
John Wong wrote: |
Tuesday, March 04, 2014, 15:43
Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)
The endcaps are inserted in a target boat wrapped with 3 heat-shields.
Chamber is currently being pumped down.
TGHT will be rampped up to 580A and heat for >4hrs.
|
Wednesday, March 05, 2014, 10:20
IGP1 = 9.2e-7 Torr.
TGHT was stepped up to 35A and stabilized after half an hour.
Auto-ramp initiated at 2.0A/min, max setpoint = 580A.
Vacuum started to climb too fast, auto-ramp aborted.
Will step up manually...
Wednesday, March 05, 2014, 12:18
Slowly stepped up to 100A manually.
Vacuum stable.
Initiating auto-ramp at 1.0A/min
Wednesday, March 05, 2014, 13:17
IGP1 = 9.8e-6 Torr.
Current = 200A
Vacuum stable.
Stepping ramping rate up to 2.0A/min.
Wednesday, March 05, 2014, 16:12
IGP1 = 4.6e-5 Torr, TGHT = 548A
Stopped auto-ramp to allow vacuum to settle back down.
Waited ~10min
IGP1 = 3.6e-5 Torr
Re-initiating auto-ramp at 2.0/min
|
Wednesday, March 05, 2014, 23:02
End caps have been heated for 6.5 hours at 580A. Vac @ 7.4e-6 Torr.
Auto-cooilng initiated at 2A/min.
Thursday, March 06, 2014, 14:48
The TaC on the endcaps is fully sinterred. (see attachment#1).
|
92
|
Monday, March 24, 2014, 17:53 |
John Wong | UO2/C | | TARGET BOAT | Done | Processing UC2Flk_02 | Monday, March 24, 2014, 17:50
UO2/C cast was prepared on March 21 and let dry over the weekend. The cast looks pretty good, and it was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat was wrapped with 3-layers of heat shield and installed in EVAP1.
Chamber is currently being pumped down.
Target will be ramped up to 520A at the rate of 0.1A/min.
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Tuesday, March 25, 2014, 15:55
Chamber has been pumped down to 6.8e-6 Torr. BP 47mTorr.
Stepping up TGHT 35A/0.264V. Vac stabilizing at 6.0e-5 Torr.
Tuesday, March 25, 2014, 17:43
Auto-ramping initiated.
Friday, April 11, 2014, 11:49
TGHT reached to max 520A.
Carbonization process is complete (see attachment)
IG at 9.3e-6 Torr.
Cooling down TGHT at 2A/min
Will vent the chamber with Ar on Monday
Monday, April 14, 2014, 16:41
UC2 flakes was removed from the chamber and transferred in to the Ar glovebox.
Evap off.
|
94
|
Wednesday, May 21, 2014, 11:41 |
John Wong | UC2 | | TARGET BOAT | In progress | Tests: Sintering carbon Mesh coated with UC2 | Tuesday, May 20, 2014, 16:01
Target boat contains one pellet of carbon mesh coated with UC2. The sample was prepared in the Ar-glove box and the container is wrapped with 2 layer of Ta foil (it wasn't easy to do the wrapping).
Chamber is currently being pumped down.
TGHT will be heated up to 600A.
Wednesday, May 21, 2014, 11:40
Chamber has been pumped down overnight, vac @ 6.7e-6 Torr.
Tuesday, May 27, 2014, 10:51
TGHT was heated up to 600A and stayed for 12hrs before cooled down (see attachment).
EDX/SEM/XRD will be done soon...
More information about this sample structure can be found here: https://www.dropbox.com/sh/hirm808pgjwzg71/AAB1-kP399IbIa8AGdI-OMGua
Friday, June 13, 2014, 14:57
Chamber was vented and cleaned for UCx target production.
Will re-visit this later...
|
96
|
Friday, July 04, 2014, 10:23 |
John Wong | ThO2 | 40282-2 | TARGET BOAT | Done | Test: Sintering ThO2 with Nb backing foils | Friday, July 04, 2014, 10:13
Target boat contains 4 set of samples. Each sample consists of 5pack ThO2/Nb. (see photos).
The container is wrapped with 3 layers of heat shield.
TGHT will be ramped up to 520A at 0.1A/min.
Chamber has been pumped over night, pressure at 4.20e-6 Torr.
The purpose of this test:
1. Will the Ta- target boat survive at that current?
2. How will ThO2 sintered? Shrinkage? Grain-growth? mass loss? density? SEM will be done later.
3. How will the pressure behave at the max operating temperature (or current)?
Friday, July 04, 2014, 12:29
Stepped up TGHT to 40A, Vac went to max at 3.5e-5 Torr and is coming down.
Auto-ramping initiated.
Tuesday, August 19, 2014, 10:20
Sample was successfully sinterred to 520A.
SEM on raw, treated powder, and sintered samples were perform. Pressure vs current plot can also be found. (see attachments)
More information can be found here:
https://www.dropbox.com/sh/fj78m7tyy7mj99p/AABfm-fQMeoaWhf6HjT8Vzn1a
|
97
|
Wednesday, July 09, 2014, 13:57 |
Laura Lambert | ThO2 | 40282-2 | TARGET BOAT | Done | Test: Sintering ThO2 with Nb backing foils |
John Wong wrote: |
Friday, July 04, 2014, 10:13
Target boat contains 4 set of samples. Each sample consists of 5pack ThO2/Nb. (see photos).
The container is wrapped with 3 layers of heat shield.
TGHT will be ramped up to 520A at 0.1A/min.
Chamber has been pumped over night, pressure at 4.20e-6 Torr.
The purpose of this test:
1. Will the Ta- target boat survive at that current?
2. How will ThO2 sintered? Shrinkage? Grain-growth? mass loss? density? SEM will be done later.
3. How will the pressure behave at the max operating temperature (or current)?
Friday, July 04, 2014, 12:29
Stepped up TGHT to 40A, Vac went to max at 3.5e-5 Torr and is coming down.
Auto-ramping initiated.
|
Wednesday, July 09, 2014, 13:55
TGHT reached 520A tuesday morning. [see attached archive screenshot]
Initiated auto-cool at 1.0A/min tuesday afternoon.
Vented in air and took samples out of EVAP1 wednesday morning. [see attached sample photo]
|
99
|
Tuesday, August 26, 2014, 15:27 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_03 | Tuesday, August 26, 2014, 11:54
UO2/C green was prepared Aug 20, 2014. The slurry was cast on a piece of glass coated with WD40 on Aug 21, 2014.
The cast peeled off the glass nicely Aug 22, 2014 and let dry until Aug 25, 2014.
Some materials were stuck on the WC jar wall and balls as always noted.
Initial UO2 powder used = 50.75g (Inventory R-00835A UO2 + bottle = 595.37g before use)
Graphite powder used = 10.78g
Green cast dried UO2/C + organic mass = 62.86g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-Ta layers of heat shield and installed in Evap1.
Chamber is currently being pumped down.
Target will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr
Wednesday, August 27, 2014, 11:18
Chamber has pumped down overnight. IG1 = 6.4e-6 Torr
Stepped TGHT up to 35A.
Wednesday, August 27, 2014, 14:41
Waited 1.5hrs for vacuum to fully stabilize, currently sitting at 2.2e-5 Torr.
Initiating auto-ramp.
Friday, September 12, 2014, 14:09
TGHT reached max 520A/5.6V last night.
Carbonization process complete (see attachment: carbonization)
IG1 = 7.6e-6 Torr
Initiating auto-cool at 2A/min
Will vent the chamber with Ar on Monday.
Monday, September 22, 2014, 14:52
complete, UO2/C in glove box
Thursday, October 09, 2014, 13:45
update rename: batch #11 - 08262014 to UC2Flk_03 |
100
|
Tuesday, September 23, 2014, 15:00 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | In progress | Processing UC2Flk_04 | Tuesday, September 23, 2014, 14:54
UO2/C green was prepared Sept 18, 2014. The slurry was cast on a piece of glass coated with WD40 on Sept 19, 2014.
The cast was let dry over the weekend and peeled off the glass nicely Sept 22, 2014.
Some materials were stuck on the WC jar wall and balls as always noted.
Initial UO2 powder used = 50.04g (Inventory R-00835A UO2 + bottle = 544.51g before use)
Graphite powder used = 9.98g
Green cast dried UO2/C + organic mass = 59.35g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.
Chamber is currently being pumped down.
Target will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Wednesday, September 24, 2014, 11:27
Chamber pumped down overnight.
IGP1 = 2.3e-6 Torr
Manually stepping TGHT up to 30A
Wednesday, September 24, 2014, 14:00
Vacuum stable.
IGP1 = 1.3e-5 Torr.
Initiating auto-ramp.
|
101
|
Friday, October 10, 2014, 14:00 |
John Wong | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_04 |
Laura Lambert wrote: |
Tuesday, September 23, 2014, 14:54
UO2/C green was prepared Sept 18, 2014. The slurry was cast on a piece of glass coated with WD40 on Sept 19, 2014.
The cast was let dry over the weekend and peeled off the glass nicely Sept 22, 2014.
Some materials were stuck on the WC jar wall and balls as always noted.
Initial UO2 powder used = 50.04g (Inventory R-00835A UO2 + bottle = 544.51g before use)
Graphite powder used = 9.98g
Green cast dried UO2/C + organic mass = 59.35g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.
Chamber is currently being pumped down.
Target will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Wednesday, September 24, 2014, 11:27
Chamber pumped down overnight.
IGP1 = 2.3e-6 Torr
Manually stepping TGHT up to 30A
Wednesday, September 24, 2014, 14:00
Vacuum stable.
IGP1 = 1.3e-5 Torr.
Initiating auto-ramp.
|
Friday, October 10, 2014, 13:51
TGHT has reached to 520A for over 20hrs; Carbonization process is complete (see attachment).
Ramping down at 2A/min.
As much as I like to come to work, Monday is a holiday. So, the chamber will be kept under vacuum.
On Tuesday, the chamber will be vent in Ar.
Friday, October 17, 2014, 11:47
Vented and taken out on tuesday.
|
107
|
Monday, January 26, 2015, 11:28 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_05 | Monday, January 26, 2015, 11:19
UO2/C green was prepared Jan 20, 2015. The slurry was cast on a piece of glass coated with WD40 on Jan 21, 2015.
The cast was let dry over the weekend and peeled off the glass nicely Jan 26, 2014. [see attached picture]
Some materials were stuck on the WC jar wall and balls, consistent with every time.
Initial UO2 powder used = 50.32g (Inventory R-00835A, UO2 + bottle = 494.52g before use)
Graphite powder used = 10.02g
Green cast dried UO2/C + organic mass = 60.33g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.
Chamber is currently being pumped down.
Target boat will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Wednesday, January 28, 2015, 11:33
change of plan.
there will be several interruptions over the course of the next month including a planned power outage and water shut off.
therefore UO2/C cannot be carbonized as these interruptions will trip off the system when UO2/C would be at max temperature.
EVAP1 is now turned off and the flakes will be stored in the fume hood until further notice.
Thursday, April 09, 2015, 16:03
EVAP1 has been cleaned.
Target boat has been reloaded into evap1 and currently pumping down.
Will initiate ramp up tomorrow.
Friday, April 10, 2015, 08:05
IGP1 = 1.7e-6 Torr
Tapped up manually to 35A.
Waited ~2hrs, vacuum stable.
IGP1 = 9.7e-6 Torr.
Initiating auto-ramp.
Monday, April 20, 2015, 11:20
TGHT reahed 520A, 5.78V on the weekend.
The boat has been sitting at max setpoint for 4.5hours.
Carbonization process is complete [See attachment].
IGP1 = 3.4e-6 Torr.
Initiating auto-cool at 2A/min.
Tuesday, April 21, 2015, 16:20
Vented in Ar and opened up today.
Now in glove box.
Monday, May 11, 2015, 11:58
UC2 flakes produced = 46.477g |
108
|
Monday, March 09, 2015, 16:58 |
Laura Lambert | Empty | | TARGET BOAT | Maintenance | Testing new software | Monday, March 09, 2015, 16:55
After upgrading IOC for CXML program, experienced some issues; therefore, switched to same software as EVAP2.
Testing new software.
Chamber currently pumping down.
Tuesday, March 10, 2015, 10:46
Chamber pumped down.
Initiated auto-ramp - not working, compilation errors...
Tuesday, March 17, 2015, 11:47
Keiko fixed software update and rebooted IOC.
Everything seems to be working now.
|
111
|
Monday, May 11, 2015, 11:49 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_06 | Monday, May 11, 2015, 11:45
UO2/C green was prepared May 6, 2015. The slurry was cast on a piece of glass coated with WD40 on May 7, 2015.
The cast peeled off the glass nicely May 8, 2014 and finished drying over the weekend. [see attached picture]
Some materials were stuck on the WC jar wall and balls, consistent with every time.
Initial UO2 powder used = 50.44g (Inventory R-00835A, UO2 + bottle = 444.23g before use)
Graphite powder used = 10.05g
Green cast dried UO2/C + organic mass = 61.23g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.
Chamber is currently being pumped down.
Target boat will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Tuesday, May 12, 2015, 08:40
IG1 = 3e-6 Torr
Tapping up manually to 35A...
Tuesday, May 12, 2015, 12:18
Waited ~2.5hrs.
Vacuum stable.
IG1 = 1.3e-5 Torr.
Initiating auto-ramp.
Monday, May 25, 2015, 09:29
TGHT reached max setpoints on the 22nd.
IGP1 = 2.2e-6 Torr.
TGHT = 520A, 5.28V
Carbonization process is complete [see attachment].
Initiating auto-cool at 2.0A/min.
Wednesday, May 27, 2015, 08:47
Vented in argon and opened up yesterday afternoon.
Uranium flakes in glove box.
Wednesday, May 27, 2015, 16:09
UC2 flakes produced = 47.647g
|
116
|
Thursday, July 30, 2015, 17:19 |
John Wong | UO2/C | 40282-1 | TARGET BOAT | In progress | Processing UC2_flk_07 | Thursday, July 30, 2015, 17:10
The mixture of UO2/C was prepared on July 13, 2015. See screen shot for more info.
The material is loaded into a target boat and wrapped with 3 layers of Ta-heat shield.
Chamber is currently being pumped down
Target boat will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Friday, July 31, 2015, 14:33
Chamber has been pumped down overnight, currently at 3.3e-6 Torr.
Manually stepping up to 35A.
Set auto ramping TGHT to 200A at 0.1A/min for over the long weekend. This current should be safe to just burn off the organic binder but not to start the carbonization process.
Wednesday, August 05, 2015, 11:05
TGHT reached 200A about 5 hours ago. Organic burn out is complete.
Begin carbonization: Increase TGHT to 520A at 0.1A/min rate.
|
117
|
Tuesday, August 11, 2015, 10:23 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2_flk_07 |
John Wong wrote: |
Thursday, July 30, 2015, 17:10
The mixture of UO2/C was prepared on July 13, 2015. See screen shot for more info.
The material is loaded into a target boat and wrapped with 3 layers of Ta-heat shield.
Chamber is currently being pumped down
Target boat will be ramped up to 520A at the rate of 0.1A/min
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Friday, July 31, 2015, 14:33
Chamber has been pumped down overnight, currently at 3.3e-6 Torr.
Manually stepping up to 35A.
Set auto ramping TGHT to 200A at 0.1A/min for over the long weekend. This current should be safe to just burn off the organic binder but not to start the carbonization process.
Wednesday, August 05, 2015, 11:05
TGHT reached 200A about 5 hours ago. Organic burn out is complete.
Begin carbonization: Increase TGHT to 520A at 0.1A/min rate.
|
Tuesday, August 11, 2015, 08:38
IGP1 = 6.8e-6 Torr
TGHT = 520A, 5.5V
TGHT sat at max setpoint for ~15hours
Initiating auto-cool at 2.0A/min.
Wednesday, August 12, 2015, 16:02
Vented in Argon and opened up this afternoon.
Transferred into glove box.
|
118
|
Wednesday, August 19, 2015, 11:44 |
Laura Lambert | UO2/C | 40282-1 | TARGET BOAT | Done | Processing UC2Flk_08 | Wednesday, August 19, 2015, 11:02
UO2/C green was prepared Aug 11, 2015. The slurry was cast on a piece of glass coated with WD40 on Aug 12, 2015.
The cast peeled off the glass nicely Aug 14, 2014 and finished drying over the weekend. [see attached picture]
Some materials were stuck on the WC jar wall and balls, consistent with every time.
Initial UO2 powder used = 50.34g (Inventory R-00835A, UO2 + bottle = 343.60g before use)
Graphite powder used = 10.14g
Green cast dried UO2/C + organic mass = 61.42g
The green was rolled up and wrapped in a piece of graphite sheet.
The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.
Chamber has been pumped down overnight, currently at IG1 = 2.5e-6 Torr.
Manually stepping up to 35A.
Target boat will be ramped up to 520A at the rate of 0.1A/min.
Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.
Wednesday, August 19, 2015, 14:05
Waited ~2.5hrs, vacuum stable.
IG1 = 1.2e-5 Torr.
Initiating auto-ramp.
Monday, August 31, 2015, 09:38
EVAP 1 tripped off saturday 29th, due to a power outage with TGHT = ~450A at time of trip-off.
EVAP1 lost vacuum for ~4.5hrs [see archived photo]
Visual check performed of EVAP1 - OK.
IGP1 = 6.4e-7 Torr.
Re-initiating carbonization process.
Monday, August 31, 2015, 10:05
Tapped up manually to 30A.
Vacuum stable.
Initiating auto-ramp at 2.0A/min to a final setpoint of 200A.
Monday, August 31, 2015, 11:33
Increased max setpoint to 250A at 2.0A/min.
According to the archive, step 1 of the carbonization process was complete and vacuum dropped at ~TGHT = 250A
Vacuum still stable IGP1 = 2.7e-6 Torr.
Once 250A achieved, changed auto ramp to 0.2A/min with a final setpoint of 300A over lunch.
Will tap up manually after lunch.
Monday, August 31, 2015, 13:07
IGP1 = 1.66e-6 Torr.
TGHT = 262A, 2.3V
Turning off auto-ramp, taking over manually...
Monday, August 31, 2015, 16:15
Tapped up manually to TGHT = 355A, 3.5V
IGP1 = 5.8e-6 Torr.
Re-initiating auto-ramp at 0.1A/min with a final setpoint of 520A
Wednesday, September 02, 2015, 09:04
IG1 = 7.5e-6 Torr
TGHT = 520A, 5.53V
TGHT remained at max setpoints ~12.5hours.
Carbonization process is complete.
Initiating auto-cool at 2.0A/min.
Thursday, September 03, 2015, 11:55
UCx vented in Ar, removed from evap1 and currently in glove box this morning.
Will measure quantity obtained this afternoon.
Thursday, September 03, 2015, 13:27
Attached are a few notable striptool screenshots from the entire carbonization process.
UCxflk_08 = 46.926g
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