|
ID |
Date |
Author |
Target Material |
Target Oven W.O# |
Source |
Status |
Subject |
|
422
|
Friday, November 02, 2018, 17:36 |
Marla Cervantes | Empty | 39530-1 | LP-FEBIAD | Done | Graphite insert test #1 | Friday, November 02, 2018, 17:33
A new LP-FEBIAD was coated and syntered (e-log 421 Evaporator_2)
The container was loaded with an empty graphite insert.
Graphite insert mass = 24.1724 g
A current of 440 A TGHT and 230 A TBHT will be inputed to the container
EVAP2 currently pumping down
Saturday, November 03, 2018, 08:04
IGP1 = 5.66e-7 Torr
Tapping manually to 40 A on TGHT and TBHT
Then auto/ramp wiill be set to 2 A/min on TGHT and 1 A/min on TBHT
Maximum temperature achieve 1802 C
Tuesday, November 06, 2018, 14:49
Container has reduced and increased its temperature from ~1760 to 1802 C.
IGP1 3.44e-7 Torr
TGHT 441.7 A and 7.7 V
TBHT 233.2 A and 3.2 V
Wednesday, November 07, 2018, 08:32
Temperature 1785 C
IGP1 2.90e-7 Torr
TGHT 441.38 A and 7.7 V
TBHT 233.2 A and 3.2 V
Friday, November 09, 2018, 17:26
Temperature 1787 C
IGP1 2.12 -7 Torr
TGHT 442.03 A and 7.7 V
TBHT 233.06 A and 3.19 V
Tuesday, November 13, 2018, 14:13: Turbos, power supplies off. Prepare for venting. |
|
97
|
Wednesday, January 15, 2014, 17:45 |
John Wong | Empty | 39165-9 | LP-SIS | In progress | Sintering TaC coating container | Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
|
98
|
Thursday, January 16, 2014, 13:06 |
Laura Lambert | Empty | 39165-9 | LP-SIS | In progress | Sintering TaC coating container |
John Wong wrote: |
Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
Thursday, January 16, 2014, 11:35
Chamber was pumped down overnight to 10-7 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 35A. Waited ~30min, current stabilized and vacuum starting to drop.
Initiating auto-ramping: Good Vac = 2.0e-5 Torr, Bad Vac = 3.0e-5 Torr.
|
|
99
|
Friday, January 17, 2014, 09:34 |
John Wong | Empty | 39165-9 | LP-SIS | In progress | Sintering TaC coating container |
Laura Lambert wrote: |
John Wong wrote: |
Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
Thursday, January 16, 2014, 11:35
Chamber was pumped down overnight to 10-7 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 35A. Waited ~30min, current stabilized and vacuum starting to drop.
Initiating auto-ramping: Good Vac = 2.0e-5 Torr, Bad Vac = 3.0e-5 Torr.
|
Friday, January 17, 2014, 09:28
TGHT/TBHT @ 300/200A. TBHT voltage is limited at 3A.
TGHT ramping rate increased to 2A/min. Pressure @ 4.5e-7 Torr.
|
|
100
|
Friday, January 17, 2014, 10:18 |
Laura Lambert | Empty | 39165-9 | LP-SIS | In progress | Sintering TaC coating container |
John Wong wrote: |
Laura Lambert wrote: |
John Wong wrote: |
Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
Thursday, January 16, 2014, 11:35
Chamber was pumped down overnight to 10-7 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 35A. Waited ~30min, current stabilized and vacuum starting to drop.
Initiating auto-ramping: Good Vac = 2.0e-5 Torr, Bad Vac = 3.0e-5 Torr.
|
Friday, January 17, 2014, 09:28
TGHT/TBHT @ 300/200A. TBHT voltage is limited at 3A.
TGHT ramping rate increased to 2A/min. Pressure @ 4.5e-7 Torr.
|
Friday, January 17, 2014, 10:14
TBHT stopped at 200A with voltage limit sitting at 3V.
Aborted auto-ramp, changed the voltage limit to 5V and increased ramping rate to 2A/min. Re-started auto-ramp.
IGP1 @ 5.0e-7 Torr
|
|
101
|
Friday, January 17, 2014, 12:52 |
John Wong | Empty | 39165-9 | LP-SIS | In progress | Sintering TaC coating container |
Laura Lambert wrote: |
John Wong wrote: |
Laura Lambert wrote: |
John Wong wrote: |
Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
Thursday, January 16, 2014, 11:35
Chamber was pumped down overnight to 10-7 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 35A. Waited ~30min, current stabilized and vacuum starting to drop.
Initiating auto-ramping: Good Vac = 2.0e-5 Torr, Bad Vac = 3.0e-5 Torr.
|
Friday, January 17, 2014, 09:28
TGHT/TBHT @ 300/200A. TBHT voltage is limited at 3A.
TGHT ramping rate increased to 2A/min. Pressure @ 4.5e-7 Torr.
|
Friday, January 17, 2014, 10:14
TBHT stopped at 200A with voltage limit sitting at 3V.
Aborted auto-ramp, changed the voltage limit to 5V and increased ramping rate to 2A/min. Re-started auto-ramp.
IGP1 @ 5.0e-7 Torr
|
Friday, January 17, 2014, 12:45
TGHT voltage limiting at 9.9V, and current stayed at 560A. Increased the TGHT voltage to 10.5V and continued ramping the heater up.
TGHT/TBHT stabilized at 580A (~10V) and 230A(3.6V).
Pressure at 1.03e-6 Torr and coming down...
Target will be heated until 5pm (4hrs) before cooling down at the ramping rate of 2A/min.
Chamber will be vented in air, next week.
Friday, January 17, 2014, 16:51
Auto-cooling initiated at 2A/min.
Vac @ 5.3e-7 Torr.
|
|
102
|
Monday, January 20, 2014, 16:30 |
Laura Lambert | Empty | 39165-9 | LP-SIS | Done | Sintering TaC coating container |
John Wong wrote: |
Laura Lambert wrote: |
John Wong wrote: |
Laura Lambert wrote: |
John Wong wrote: |
Wednesday, January 15, 2014, 17:30
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped. Tomorrow, the HS water valve can be opened to test for leaks.
Notes:
If everything is fine, TGHT/TBHT can be stepped up to 30A-50A. Watch for the vacuum; once it's stable the auto ramping program can be initiated.
Once TGHT/TBHT reached above 200A, the ramping rate for TGHT can be increased up to 2A/min. (This step is to speed up the process; however it's not mandatory)
|
Thursday, January 16, 2014, 11:35
Chamber was pumped down overnight to 10-7 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 35A. Waited ~30min, current stabilized and vacuum starting to drop.
Initiating auto-ramping: Good Vac = 2.0e-5 Torr, Bad Vac = 3.0e-5 Torr.
|
Friday, January 17, 2014, 09:28
TGHT/TBHT @ 300/200A. TBHT voltage is limited at 3A.
TGHT ramping rate increased to 2A/min. Pressure @ 4.5e-7 Torr.
|
Friday, January 17, 2014, 10:14
TBHT stopped at 200A with voltage limit sitting at 3V.
Aborted auto-ramp, changed the voltage limit to 5V and increased ramping rate to 2A/min. Re-started auto-ramp.
IGP1 @ 5.0e-7 Torr
|
Friday, January 17, 2014, 12:45
TGHT voltage limiting at 9.9V, and current stayed at 560A. Increased the TGHT voltage to 10.5V and continued ramping the heater up.
TGHT/TBHT stabilized at 850A (~10V) and 230A(3.6V).
Pressure at 1.03e-6 Torr and coming down...
Target will be heated until 5pm (4hrs) before cooling down at the ramping rate of 2A/min.
Chamber will be vented in air, next week.
Friday, January 17, 2014, 16:51
Auto-cooling initiated at 2A/min.
Vac @ 5.3e-7 Torr.
|
|
|
66
|
Thursday, April 11, 2013, 14:20 |
John Wong | Empty | 39165-6 | LP-SIS | Done | Coating target oven /w TaC & sintering for UCx#6 | Monday, April 08, 2013, 17:39
Target container is coated with TaC; the container will be used for the UCx#6 target.
No Ta-heat shields are used.
For the sintering process:
TGHT will be ramped up to 580A at 0.2A/min
TBHT will be ramped up to 230A at 0.2A/min
Chamber has been pumped down. HS cooling H2O valve opened; no leaks have detected.
Thursday, April 11, 2013, 14:35
Target and tube heaters have reached to optimum.
Auto-cooling initiated...
Friday, April 12, 2013, 11:17
P/S off. Chamber vented.
Done!
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|
45
|
Wednesday, August 22, 2012, 17:36 |
John Wong | Empty | 39165-5 | LP-SIS | Done | Coating target oven /w TaC & sintering for UCx#5 | Wednesday, August 22, 2012, 17:25
Note: LP-FEBIAD target container ( W.O#37918-3) was coated with TaC and sintered on July 19 for UCx#5 target. Then, a last minute request from the Sci Dev. to run the UCx#5 in LP-SIS.
The target container was coated with TaC (Using IR heat lamp to speed the drying time)
It's wrapped with 3 layers of Ta as the heat-shield, including the backblock.
TGHT will be ramped up to 580A at 0.5A/min.
TBHT will be ramped up to 230A at 0.5A/min.
Chamber is currently being pumped down.
Wednesday, August 22, 2012, 18:27
Chamber was pumped down to 5.4e-6 Torr; the HS cooling water valve was opened and no leaks were detected.
Stepped up TGHT/TBHT to 20A.
Initiated auto-ramping...
Friday, August 24, 2012, 00:21
TGHT/TBHT have reached to 580A/230A, respectively, and have remained at the currents for ~10hrs.
Current, IG1 is at 9.3e-7 torr. The sintering process is done.
Initiating auto-cool down at 2A/min.
Friday, August 24, 2012, 13:31
TGHT & TBHT power supplies are off.
The chamber is vented.
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|
51
|
Wednesday, October 10, 2012, 16:37 |
John Wong | Empty | 39165-4 | LP-SIS | Done | Coating target oven /w TaC & sintering for TiC#3 | Wednesday, October 10, 2012, 16:35
Target container is coated with TaC. No Ta-heat shields are used.
TGHT will be ramped up to 580A at 0.2A/min.
TBHT will be ramped up to 230A at 0.2A/min.
Chamber is currently being pumped down
Wednesday, October 10, 2012, 17:31
Chamber was pumped down to mid 10-6 Torr. HS water valve was opened and no leak in vacuum was observed.
TGHT and TBHT were stepped up to 30A. Everything seems fine...
Initiated auto-ramping: Good vac = 2.0e-5 torr, Bad Vac = 3.0e-5 Torr.
Thursday, October 11, 2012, 10:35
TBHT has reached to 230A, 3.52V.
TGHT has reached to 232A. Vacuum is stabilizing at 8.0e-7 Torr, BP at 19 mTorr.
Increased TGHT ramping rate to 2.0A/min.
Thursday, October 11, 2012, 14:55
TGHT reached to 580A/9.95V, local 575A/10.03V.
TGHT at 230A/3.62V
Local target container temperature measured at ~1430C, central block at ~1220C
IGP1 currently at 1.68e-6 Torr.
Heaters will be remained on for another 2 hours or so before auto-cooling is initiated.
Thursday, October 11, 2012, 17:49
Target container has been heated for over 4 hrs.
IGP1 @ 1.10e-6 Torr, BP @ 18mTorr
Auto-cooling initiated, rate @ 2A/min.
Friday, October 12, 2012, 10:02
TBHT/TGHT have reached to zero current.
P/S off.
Venting chamber..
see attachment#1: striptool archiver
Tuesday, October 16, 2012, 10:35
Container looks good. It will be used for TiC#3
|
Attachment 1: striptool_archiver_container_TaC_coating.PNG
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52
|
Tuesday, October 16, 2012, 14:18 |
John Wong | TiC | 39165-4 | LP-SIS | Done | Sintering TiC#3 | Tuesday, October 16, 2012, 14:12
Target is filled with 360 discs of TiC (with 1 mole of graphite) backed on C-grv foil.
No Ta heat-shields wrapped around the container.
One regular end-cap is inserted and expanded. The other end is inserted with a D-cap for out-gassing.
Re ionizer foil is inserted.
TGHT will be ramped up to 580A, TBHT to 230A; ramping rate at 0.2A/min.
Chamber is currently being pumped down...
Tuesday, October 16, 2012, 16:11
HS water valve is opened. No leaks is detected.
Vacuum is coming down steadily. IGP1 currently at 1.7e-5 Torr.
Wednesday, October 17, 2012, 11:41
The chamber was pumped down overnight. IGP1 reads at 5.8e-7 Torr.
Both TGHT & TBHT were stepped up to 30A. P/S OK!
Initiated auto-ramping...
Monday, October 22, 2012, 10:58
TGHT and TBHT have reached to 580A & 230A, respectively (see attachment#1).
IGP1 currently at 6.27e-6 Torr. BP@20mTorr.
Currents will remain at max for another 3 hours.
Local temperature measured at 1500C (container surface), 1300C (center block)
Monday, October 22, 2012, 17:27
Auto cooling initiated.
Tuesday, October 23, 2012, 17:54
TGHT & TBHT are at 0A. P/S & pumps off.
The chamber will be vented, and the target will be taken out for inspections.
|
Attachment 1: TiC#3_maxcurrent.PNG
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116
|
Friday, January 31, 2014, 12:10 |
Laura Lambert | Empty | 39165-10 | LP-SIS | Done | Sintering TaC coating container for Ta? | Friday, January 31, 2014, 11:28
Target container is coated with TaC.
The container is wrapped with 3 x Ta heat-shield.
Chamber was pumped down to 1.9e-7 Torr.
HS water valves were opened, no leak detected.
TGHT and TBHT were stepped up to 35A. Waited ~20min, current stabilized and vacuum starting to drop.
TGHT will be ramped up to 580A at 0.2A/min, max voltage = 11.05V.
TBHT will be ramped up to 230A at 0.2A/min, max volatge = 5V.
Initiating auto-ramping: Good Vac = 3.0e-5 Torr, Bad Vac = 4.0e-5 Torr.
Monday, February 03, 2014, 10:21
TGHT reached 580A pver the weekend.
TBHT sitting at 1.4A, checked archive: never went over 1.6A. Aborted auto-ramp, re-starting auto ramp process for TBHT.
IGP1 = 1.6e-7 Torr.
Monday, February 03, 2014, 15:23
TBHT running smoothly, must have been and electrical problem.
TBHT currently at 85A, vacuum has not changed, increasing TBHT auto-ramp to 2.0A/min
Tuesday, February 04, 2014, 10:10
TBHT reached 230A yesterday pm. Measured temp this morning at 1800C.
Initiated TGHT/TBHT auto-cooling at 2.0A/min.
Wednesday, February 05, 2014, 11:33
Chamber cooled down overnight, vented and opened up this morning.
Smooth run! Container fully sintered.
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|
152
|
Wednesday, August 06, 2014, 16:10 |
John Wong | Ta | 38817-9 | HP-SIS | In progress | Conditioning Ta target | Wednesday, August 06, 2014, 15:59
Target consists of 400 Ta discs.
Total packed length 4.5cm
Total mass 47.490g.
Re foil inserted.
Wednesday, August 06, 2014, 16:07
Chamber is currently being pumped down.
No Ta heat-shield wrapped (Want to check the temperature without it)
One end-cap inserted on left (wrt ionizer into the page).
TGHT and TBHT will be ramped up to 820A/230A at 2A/min.
Wednesday, August 06, 2014, 18:07
Vacuum at 2.3e-6 Torr. HS water valve opened. No leaks.
Initiated auto-ramping.
Thursday, August 07, 2014, 11:39
Target has been heated for 11hrs at TGHT/TBHT = 820A/230A.
Temperature measured with pyrometer:
Target leg = 1600C + (250 correction for e=0.25) = 1850C
Inside target material = dark, temp can't be measured.
Cooling down at 2A/min for TGHT and 1A/min TBHT.
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|
154
|
Friday, August 08, 2014, 15:16 |
Laura Lambert | Ta | 38817-9 | HP-SIS | Done | Conditioning Ta target |
John Wong wrote: |
Wednesday, August 06, 2014, 15:59
Target consists of 400 Ta discs.
Total packed length 4.5cm
Total mass 47.490g.
Re foil inserted.
Wednesday, August 06, 2014, 16:07
Chamber is currently being pumped down.
No Ta heat-shield wrapped (Want to check the temperature without it)
One end-cap inserted on left (wrt ionizer into the page).
TGHT and TBHT will be ramped up to 820A/230A at 2A/min.
Wednesday, August 06, 2014, 18:07
Vacuum at 2.3e-6 Torr. HS water valve opened. No leaks.
Initiated auto-ramping.
Thursday, August 07, 2014, 11:39
Target has been heated for 11hrs at TGHT/TBHT = 820A/230A.
Temperature measured with pyrometer:
Target leg = 1600C + (250 correction for e=0.25) = 1850C
Inside target material = dark, temp can't be measured.
Cooling down at 2A/min for TGHT and 1A/min TBHT.
|
Friday, August 08, 2014, 15:14
Vented in air and opened up up this morning.
Endcaps inserted and expanded.
Rh foil and salts added.
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117
|
Tuesday, February 11, 2014, 13:49 |
Laura Lambert | Empty | 38817-8 | HP-SIS | Done | Sintering TaC coating container for TiC | Tuesday, February 11, 2014, 13:43
Target container is coated with TaC and wrapped with 3-Ta heat shields.
TGHT and TBHT will be ramped up to 820A and 300A, respectively.
Ramping rate set to 0.2A/min.
Good vac = 3e-5 Torr, Bad vac = 4e-5 Torr.
Chamber currently being pumped down...
Tuesday, February 11, 2014, 16:33
Chamber pumped down to 2e-6 Torr.
HS cooling water valves opened; no leaks detected.
Will step up in the a.m.
Wednesday, February 12, 2014, 11:41
IGP1 = 1.5e-7 Torr
TGHT max voltage = 17.05V, TBHT max voltage = 5V
Stepped TGHT and TBHT up to 35A
Waited 1hr15 before vacuum stabilized/ started to drop.
Initiating auto-ramping.
Thursday, February 13, 2014, 10:19
TBHT and TGHT have both reached 300A
IGP1 = 2.4e-7 Torr.
Increasing TGHT auto-ramp to 2.0A/min
Friday, February 14, 2014, 08:58
TGHT reached 820A yesterday afternoon. Measured internal temp this morning at 1300C.
Initiated TGHT auto-cooling at 2.0A/min and TBHT at 1.0A/min.
IGP1 = 3.2e-7 Torr.
Monday, February 17, 2014, 12:02
Cooled down friday. Vented this morning.
Container fully sintered, smooth run!
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125
|
Friday, March 21, 2014, 16:18 |
John Wong | TiC | 38817-8 | HP-SIS | In progress | Sintering TiC | Friday, March 21, 2014, 16:09
Target container is loaded with 360 Discs of TiC.
Target length = 11.7cm.
Total green mass = 40.945g
Container is wrapped with 3 Ta-heat shields, and have been pumped down in the chamber.
For the sintering process:
TGHT ramp up to 820A, and TGHT to 300A at 0.1A/min.
Friday, March 21, 2014, 16:15
TGHT/TBHT were manually stepped up to 40A.
Vac stabilizes at 1.7e-6 Torr.
Initiate auto-ramping...
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126
|
Wednesday, March 26, 2014, 11:07 |
Laura Lambert | TiC | 38817-8 | HP-SIS | In progress | Sintering TiC |
John Wong wrote: |
Friday, March 21, 2014, 16:09
Target container is loaded with 360 Discs of TiC.
Target length = 11.7cm.
Total green mass = 40.945g
Container is wrapped with 3 Ta-heat shields, and have been pumped down in the chamber.
For the sintering process:
TGHT ramp up to 820A, and TGHT to 300A at 0.1A/min.
Friday, March 21, 2014, 16:15
TGHT/TBHT were manually stepped up to 40A.
Vac stabilizes at 1.7e-6 Torr.
Initiate auto-ramping...
|
Wednesday, March 26, 2014, 11:05
TBHT reached max desired current of 300A
IGP1 = 1.4e-6 Torr
TGHT = 543A
Increasing TGHT auto-ramp to 2.0A/min
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127
|
Wednesday, March 26, 2014, 18:23 |
John Wong | TiC | 38817-8 | HP-SIS | Done | Sintering TiC#4 |
Laura Lambert wrote: |
John Wong wrote: |
Friday, March 21, 2014, 16:09
Target container is loaded with 360 Discs of TiC.
Target length = 11.7cm.
Total green mass = 40.945g
Container is wrapped with 3 Ta-heat shields, and have been pumped down in the chamber.
For the sintering process:
TGHT ramp up to 820A, and TGHT to 300A at 0.1A/min.
Friday, March 21, 2014, 16:15
TGHT/TBHT were manually stepped up to 40A.
Vac stabilizes at 1.7e-6 Torr.
Initiate auto-ramping...
|
Wednesday, March 26, 2014, 11:05
TBHT reached max desired current of 300A
IGP1 = 1.4e-6 Torr
TGHT = 543A
Increasing TGHT auto-ramp to 2.0A/min
|
Wednesday, March 26, 2014, 18:18
TGHT has reached to 820A\13.4V and target has been heated at that current for 4.5 hours.
Vac is coming down to 1.1e-6 Torr.
See link for RGA results: https://www.dropbox.com/sh/08dcxskux21aqap/1SF_dTJB4l
Cooling down in process at 2A/min for TGHT and 1A/min for TBHT.
Thursday, March 27, 2014, 11:14
Target is cooled down. TGHT/TBHT have reached to 0A.
All pumps off; chamber will be vented soon.
Friday, March 28, 2014, 15:00
Target has been assembled. Heat shield WO#39956-10
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185
|
Thursday, April 09, 2015, 09:38 |
Laura Lambert | Empty | 38817-7 | HP-SIS | Done | Sintering TaC coating container for SiC#32 | Thursday, April 09, 2015, 09:33
Target container is coated with TaC and wrapped with 3-Ta heat shields, not incl center block.
TGHT and TBHT will be ramped up to 820A and 230A, respectively.
Chamber pumped down overnight.
IGP1 = 5.2e-7 Torr.
HS cooling water valves opened; no leaks detected.
TGHT max voltage = 18V, TBHT max voltage = 5V
Stepping TGHT and TBHT up to 35A...
Thursday, April 09, 2015, 10:07
Waited ~20min, vacuum stable.
IGP1 = 5.3e-7 Torr.
Good vac = 3e-5 Torr. Bad vac = 4e-5 Torr.
Auto-ramp initiated at 0.2A/min.
Monday, April 13, 2015, 09:06
Reached max setpoints sunday morning [see attached photo for striptool].
Internal temperature measured with OMEGA = 1965C
IGP1 = 4.4e-7 Torr,
Initiating auto cool for TGHT and TBHT at 2.0A/min and 1.0A/min respectively.
Tuesday, April 14, 2015, 14:12
Vented in air and opened up this morning.
Fully sintered.
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Attachment 1: sintering_TaC_coating_for_container.JPG
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186
|
Friday, April 17, 2015, 16:14 |
Laura Lambert | SiC | 38817-7 | HP-SIS | In progress | Sintering SiC#31 | Friday, April 17, 2015, 16:01
Total number of foils: 520 discs
Total mass of materials [incl graphite foils]: 60.2441g
Total length packed: 17.0cm
Container is wrapped with 3x Ta-heat shields.
No endcaps inserted to allow outgasing.
Currently being pumped down.
Monday, April 20, 2015, 11:08
Target container is coated with TaC and wrapped with 3-Ta heat shields, not incl center block.
TGHT and TBHT will be ramped up to 820A and 230A, respectively.
Chamber pumped down over the weekend.
IGP1 = 2.1e-7 Torr.
HS cooling water valves opened; no leaks detected.
TGHT max voltage = 18V, TBHT max voltage = 5V
....
attempted to start stepping up manually.
power supply not responding to epics controls for TBHT only...looking into problems now...
Monday, April 20, 2015, 16:06
Epics is working.
Power supply connections unplugged/plugged back in.
Everything working again.
Tapped up manually to 40A.
Waited ~1hr30 for vacuum to stabilize.
IGP1 = 1.8e-6 Torr.
Good vac = 3e-5 Torr. Bad vac = 4e-5 Torr.
TGHT and TBHT will be ramped up to 820A and 230A, respectively.
Initiating auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.
Wednesday, April 22, 2015, 15:23
TGHT = 200A, 2.26V; TBHT = 117A, 1.58V
IGP1 = 9.8e-6 Torr.
Increasing auto-ramp to 0.4A/min and 0.2A/min for the TGHT and TBHT respectively.
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