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.

 Wednesday, June 14, 2017, 15:49

Pellets previously made by Marla and weighed.

Pellets are placed inside a small graphite sample tube.

Graphite sample tube loaded with pellets is loaded into a previously TaC coated boat.

Boat is wrapped with 3x Ta heat shields.

Loaded into evap2.

Chamber currently pumping down.

 Thursday, June 15, 2017, 11:24

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

Tapped up manually to 50A, 0.44V

Vacuum currently rising starting to settle.

IGP1 = 1.51e-6 Torr.

One vacuum stabilizes will initiate auto ramp at a rate of 1.0 A/min up to a final set point of 150 A.

Final desired temperature of 1800C.

Marla Cervantes wrote:

Laura Lambert wrote:  Wednesday, June 14, 2017, 15:49 Pellets previously made by Marla and weighed. Pellets are placed inside a small graphite sample tube. Graphite sample tube loaded with pellets is loaded into a previously TaC coated boat. Boat is wrapped with 3x Ta heat shields. Loaded into evap2. Chamber currently pumping down.  Thursday, June 15, 2017, 11:24 HS water valves were opened this morning, no leaks detected. Tapped up manually to 50A, 0.44V Vacuum currently rising starting to settle. IGP1 = 1.51e-6 Torr. One vacuum stabilizes will initiate auto ramp at a rate of 1.0 A/min up to a final set point of 150 A. Final desired temperature of 1800C.    Friday, June 16, 2017, 10:37 IGP1 = 7.91e-7 torr. TGHT = 167 A, 2.3 V. Tapped up manually to 350A yesterday, remained there overnight. IGP1 = 4.55e-7 torr TGHT=350 A, 5.6 V, Changed slope to 0.98 Checked temperature readings with mikron to confirm slope Mikron LS = 1260C, RS=1290C OMEGA= 1295C Initiating auto ramp at 1.0A/min to a final set point of 450A. Final desired temperature of 1600C (no longer need to go to 1800C). *note: graphite sample tube has graphite endcaps inserted

 Friday, June 16, 2017, 15:10

Tapped up manually to 420A and auto ramp at 1.0A/min to 450A.

IGP1= 7.15e-7 torr

TGHT=450 A, 7.85 V

OMEGA = 1605C

Process completed, initiating auto cool at 1.0A/min

Elog entry by Pauline

 Monday, June 19, 2017, 16:18

Vented in air and removed from evap2 this a.m.

Weirdly TGHT had tripped off at 10pm on friday June 16th

TGHT = 58A when it tripped off.

Nothing else tripped.

Power supply was still on.

Water was still running

But, in the epics water control box it showed green boxes for TGHT, HS and CHILLER...but all said trip in yellow next to the boxes...odd...

Also noted, before removing from evap2, noticed both legs were bent and touching heat shield, will look further into this...

 Tuesday, June 20, 2017, 15:58

Target consists of 470 discs.

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

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

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

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

1 long Ta Heat shield.

No endcaps inserted, no Rh foil inserted.

Chamber currently pumping down.

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

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

Final desired temperature = 1900C

OMEGA slope = 0.98

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

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

Wednesday, June 21, 2017, 10:05 

HS water valves opened, no leaks detected.

Tapped up manually to 40A, vacuum stable.

IGP1 = 5.53e-7 Torr

IGP2 = 4.35e-7 Torr

Initiating auto-ramp.

 Wednesday, June 21, 2017, 14:48

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

Increased max setpoint of voltage to 14V.

Re-started auto-ramp starting at 575A.

Wednesday, June 21, 2017, 15:23  

TGHT = 600A, 8.95V

TBHT = 230A, 3.72V

IGP1 = 1.55e-6 Torr

IGP2 = 1.62e-6 Torr

OMEGA = 1538C

Increasing max setpoint of TGHT to 700A

 Wednesday, June 21, 2017, 16:21

TGHT = 700A, 10.57V

TBHT = 230A, 3.75V

IGP1 = 2.2e-6 Torr

IGP2 = 2.4e-6 Torr

OMEGA = 1730C

Increasing max setpoint of TGHT to 750A

 Friday, June 23, 2017, 15:41

TGHT = 780A, 11.77V

TBHT = 230A, 3.77V

IGP1 = 4.8e-7 Torr

IGP2 = 4.8e-7 Torr

OMEGA = 1890C

Conditioning process complete.

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

 Monday, June 26, 2017, 10:51

Target vented in air and removed from evap2 today.

Endcaps inserted.

Target looks good!

 Tuesday, July 18, 2017, 15:26

Problems occured with TGHT water supply paddle wheel stopped and therefore tripped off evap2 last week.

All paddle wheels were replaced today for evap2 [other than the chiller].

A build up of dirt was found on all wheels replaced.

Evap2 good to go.

Will test flow meters before heating up to higher setpoints to confirm everything is working.

Monday, July 31, 2017, 15:24

Turned on BV and TP this afternoon.

Started ramping down, ~1min after turned on both tripped off.

Vacuum box turned red.

IGP1 appears yellow but still registering a vacuum.

TP interlocks: requires IEVAP2:IGP1 < 500mTorr but IGP1 = 6mTorr when tripped off.

Should have been satisfied and therefore not tripped but IGP1 not communicating?

Nothing wrong with ion gauge in person, vacuum good on direct read out.

When attempting 'Global Reset', nothing would reset - vacuum box remained red etc.

See screenshot attached of errors.

 Tuesday, August 01, 2017, 15:31

Had kept BP, PV and RV overnight.

This morning vacuum fine, everything had reset except "IEVAP2:TP on" under device notes for IEVAP2:TP remained red.

Turned on BV and TP, once turbo pump registered on, red wording went away.

Currently pumping down - everything looks fine now.

Still unsure of reason for these errors...

 Friday, August 04, 2017, 10:55

Happened again last night at ~5:45 while evaps at ~420A - see elog i.d. 383 for photos and details.

Marla Cervantes wrote:

Monday, July 31, 2017,   Pellets previously pressed by Marla and Pauline.  Pellets are placed inside a small graphite container. Graphite container loaded with 5 pellets was loaded into Ta-boat previously coated with TaC. Ta-boat is wrapped with 3 Ta heat shields. Loaded in evaporator 2.  Tuesday, August 01, 2017, Chamber pumping down.  Wednesday, August 02, 2017, 16:03 HS water valves were opened, no leaks were detected. Current was tapped manually to 40 A. After the stabilization of the vacuum auto ramping was set up to 0.5 A/min. Up to a final set up point of 300 A. Final desired temperature ~1700 C.

 Friday, August 04, 2017, 10:20

evap2 tripped twice yesterday.

1st trip) there was a power bump which caused a trip at ~4:20pm, this can be seen in the striptool image attached.

-TGHT spiked to zero, but immediately went back to the ~420A it was sitting at at the time.

-This did not initiate a full trip of everything, but a visual spike in the system can be seen

-Oddly this was not picked up in archives - happened so fast and must have been in the small time frame it was not picking up information

-Did TGHT actually drop to zero followed by then applying an immediate 420A?

-Or did it simple not register a reading due to power bump?

2nd trip) IGP1 stopped communicating at ~5:45pm, this can be seen in both the archives, striptool and evap2 control screenshot images attached

-IGP1 was fine, vacuum was good

-Registering good vacuum in epics - can see in screen shot vacuum was still good but IGP1 turned yellow as if turned off

-This resulted in TP followed by BV tripping off due to no longer getting a vacuum reading making the TP think there was a bad vacuum.

-Possible miscommunication with PLC?

-This is the same scenario that happened on mon - see elog i.d. 381

Will follow up when more information acquired...

Laura Lambert wrote:

Marla Cervantes wrote:  Monday, July 31, 2017,   Pellets previously pressed by Marla and Pauline.  Pellets are placed inside a small graphite container. Graphite container loaded with 5 pellets was loaded into Ta-boat previously coated with TaC. Ta-boat is wrapped with 3 Ta heat shields. Loaded in evaporator 2.  Tuesday, August 01, 2017, Chamber pumping down.  Wednesday, August 02, 2017, 16:03 HS water valves were opened, no leaks were detected. Current was tapped manually to 40 A. After the stabilization of the vacuum auto ramping was set up to 0.5 A/min. Up to a final set up point of 300 A. Final desired temperature ~1700 C.    Friday, August 04, 2017, 10:20 evap2 tripped twice yesterday. 1st trip) there was a power bump which caused a trip at ~4:20pm, this can be seen in the striptool image attached. -TGHT spiked to zero, but immediately went back to the ~420A it was sitting at at the time. -This did not initiate a full trip of everything, but a visual spike in the system can be seen -Oddly this was not picked up in archives - happened so fast and must have been in the small time frame it was not picking up information -Did TGHT actually drop to zero followed by then applying an immediate 420A? -Or did it simple not register a reading due to power bump? 2nd trip) IGP1 stopped communicating at ~5:45pm, this can be seen in both the archives, striptool and evap2 control screenshot images attached -IGP1 was fine, vacuum was good -Registering good vacuum in epics - can see in screen shot vacuum was still good but IGP1 turned yellow as if turned off -This resulted in TP followed by BV tripping off due to no longer getting a vacuum reading making the TP think there was a bad vacuum. -Possible miscommunication with PLC? -This is the same scenario that happened on mon - see elog i.d. 381 Will follow up when more information acquired...

 Friday, August 04, 2017, 14:05

Vented in air and transferred to glove box today.

Container did not break.

Some wires in PLC were not creating a good contact - could be problem re: IGP1 tripping off.

Wires replaced by Gelo.

Put back under vacuum with nothing loaded over weekend to see how things run...

 Tuesday, August 08, 2017, 14:57

See elog i.d's #384 and #381

Investigated wiring in PLC.

Some wires in PLC were not creating a good contact - could be problem re: IGP1 tripping off.

Wires replaced by Gelo.

Pumped down and turned on power supplies over weekend.

Everything remained on - IGP1 did not trip system off.

May proceed with regular use.

 Friday, September 15, 2017, 09:44

Target consists of 470 discs.

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

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

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

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

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

No endcaps inserted, no Rh foil inserted.

Loaded into evap2 yesterday.

Chamber pumped down overnight.

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

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

Final desired temperature = 1900C

OMEGA slope = 0.98

HS water valves were already open.

Tapped up manually to 40A, vacuum stable.

IGP1 = 1.1e-6 Torr

IGP2 = 7.8e-7 Torr

Initiating auto-ramp.

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

 Monday, September 18, 2017, 08:38

TGHT = 647A, 10.04V

TBHT = 233A, 3.51V

IGP1 = 4.65e-7 Torr

IGP2 = 3.78e-7 Torr

OMEGA = 1700C

Increasing max setpoint of TGHT to 750A

 Monday, September 18, 2017, 14:49

TGHT = 760A, 11.96V

TBHT = 233A, 3.54V

IGP1 = 8.9e-7 Torr

IGP2 = 8.6e-7 Torr

OMEGA = 1905C

Conditioning process complete.

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

 Tuesday, September 19, 2017, 10:38

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

Vented in air and removed from evap2 this morning.

Target looks good.

Endcaps inserted and expanded.

Inserting Rh foil this afternoon.

 Tuesday, September 26, 2017, 10:53

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

TBHT striptool = 228A, 0.33V

TBHT direct readout = 230.4A, 0.33V

Vacuum good/ stable.

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

IGP1 striptool = 3e-6 Torr

IGP1 direct readout = 3.79e-6 mBar

Initiating auto-cool at 2.0A/min.

 Tuesday, November 21, 2017, 12:01

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

Wrapped with 1 long Ta heat shield 3x

Loaded into evap2 just before lunch

IGP1 = 7.1e-6 Torr

OMEGA slope = 0.98

Good vac at 3.0e-4, bad vac at 8.0e-4 Torr.

HS water valves have remained open since the last time evap2 was used.

No leak check done.

Tapped up manually to 35A.

Waited ~25min

Vacuum stable.

IGP1 = 1.15e-5 Torr

IGP2 = 1.17e-5 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 300A

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

 Wednesday, November 22, 2017, 09:32

TGHT = 270A, 4.15V

OMEGA = 1285C

IGP1 = 1.23e-6 Torr

IGP2 = 1.13e-6 Torr

Vacuum stable.

Increasing ramping rate to 1.0A/min and final setpoint to 350A

 Wednesday, November 22, 2017, 10:25

TGHT = 325A, 5.15V

OMEGA = 1500C

IGP1 = 2.80e-6 Torr

IGP2 = 2.93e-6 Torr

Vacuum stable.

Increasing ramping rate to 1.5A/min and final setpoint to 400A

 Wednesday, November 22, 2017, 10:49

TGHT = 350A, 5.60V

OMEGA = 1580C

IGP1 = 4.5e-6 Torr

IGP2 = 4.9e-6 Torr

Vacuum stable.

Increasing ramping rate to 2.0A/min

 Wednesday, November 22, 2017, 11:18

TGHT = 400A, 6.64V

OMEGA = 1734C

IGP1 = 5.8e-6 Torr

IGP2 = 6.2e-6 Torr

Vacuum stable.

Increasing final setpoint to 450A.

 Wednesday, November 22, 2017, 15:59

TGHT = 460A, 8.07V

OMEGA = 1898C

IGP1 = 1.34e-6 Torr

IGP2 = 1.27e-6 Torr

Sintering process complete.

Remained at max setpoints for just over 4hrs.

Initiating auto-cool at 2.0A/min.

 Thursday, November 23, 2017, 13:09

Removed from evap2 this morning.

Coating looks good.

 Thursday, November 23, 2017, 14:54

Graphite insert loaded into previously TaC coated target boat.

One endcap removed to allow for outgassing: left side out, right side in.

Weight of graphite tube + single endcap = 10.2012g

Same Ta heats shields remain on container from sintering TaC coating.

Currently pumping down in evap2.

Friday, November 24, 2017, 11:31

IGP1 = 4.52e-7 Torr

IGP2 = 3.43e-7 Torr

OMEGA slope = 0.98

Good vac at 3.0e-4, bad vac at 8.0e-4 Torr.

HS water valves have remained open since the last time evap2 was used.

No leak check done.

Tapped up manually to 50A.

Vacuum stable.

IGP1 = 5.34e-7 Torr

IGP2 = 5.54e-7 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 300A

Once max setpoints achieved, will tap up manually to final desired temperature of 2000C

Uranium targets go to a max temperature of 1950C online, so graphite insert should be tested to 2000C

 Monday, November 27, 2017, 10:15

IGP1 = 2.5e-7 Torr

IGP2 = 1.9e-7 Torr

Reached 300A, 4.61V

OMEGA = 1298C

Tapped up manually to 485A, 8.46V

OMEGA = 1808C

Remained at this setpoint for a day

Tuesday, November 28, 2017, 15:41 

IGP1 = 3.88e-7 Torr

IGP2 = 3.58e-7 Torr

Tapping up to 2000C...

Tuesday, November 28, 2017, 16:10 

TGHT = 570A, 10.20V

OMEGA = 2005C

IGP1 = 9.64e-7 Torr

IGP2 = 1.05e-6 Torr

There was a minor drop in voltage at 540A, 9.58V - dropped to ~9.4V then slowly went back up to 9.58V [see photo]

Will remain at this setpoint overnight and cool down in the a.m.

 Wednesday, November 29, 2017, 08:48

Voltage increased slowly while sitting at max setpoint of 570A [see photo]

TGHT = 570A, 11.20V --> voltage increased by 1.0V over ~16.5hrs

OMEGA = 2114C

IGP1 = 6.6e-7 Torr

IGP2 = 6.5e-7 Torr

Initiating auto-cool at 2.0A/min

 Wednesday, November 29, 2017, 16:15

Vented in air and removed today.

Will update tomorrow with results and photos.

 Wednesday, November 29, 2017, 16:17

LP-FEBIAD loaded into evap2 today and currently pumping down.

Temperature measurements of the ionizer will be done by Fernando for ARIEL development.

Ta foil covering side holes on heat shield so no temp measurements can be done using OMEGA on side ports of evaporator as per request of Fernando

No Ta heat shields on container.

Final desired temperature of ionizer = 2000C

 Thursday, November 30, 2017, 09:51

HS water valves opened, no leaks detected.

IGP1 = 2.1e-7 Torr

IGP2 = 1.7e-7 Torr

Tapped up to TGHT = 350A, 5.83V; TBHT = 230A, 3.31V

IGP1 = 6.3e-7 Torr

IGP2 = 3.7e-7 Torr

Will check temp measurements in lab after lunch before proceeding...

 Friday, December 01, 2017, 11:04

Temperature measurements done.

Initiated auto-cool this morning.

TGHT cooling at 2.0A/min and TBHT at 1.0A/min.

Monday, December 04, 2017, 11:04

Removed from evap2 this morning.

 Thursday, December 07, 2017, 09:57

Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat.

There are also 4 coated springs, 2 on each side of the stack of endcaps.

The boat is wrapped with 3-layers of Ta heatshields.

Chamber pumped down overnight.

OMEGA slope = 0.98

HS water valves opened, no leaks detected.

IGP1 = 5.9e-7 Torr

IGP2 = 4.0e-7 Torr

Tapping up manually.

Final desired temperature = 1800C

Laura Lambert wrote:

Thursday, December 07, 2017, 09:57 Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat. There are also 4 coated springs, 2 on each side of the stack of endcaps. The boat is wrapped with 3-layers of Ta heatshields. Chamber pumped down overnight. OMEGA slope = 0.98 HS water valves opened, no leaks detected. IGP1 = 5.9e-7 Torr IGP2 = 4.0e-7 Torr Tapping up manually. Final desired temperature = 1800C

 Thursday, December 07, 2017, 11:51

TGHT tripped off.

Turns out the vacuum limits have not been fully updated when they should have been and the old ones still apply.

IGP1 reached 8e-5 Torr which tripped off the system.

TGHT = 80A, 1.05V when the system tripped.

Laura Lambert wrote:

Laura Lambert wrote:  Thursday, December 07, 2017, 09:57 Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat. There are also 4 coated springs, 2 on each side of the stack of endcaps. The boat is wrapped with 3-layers of Ta heatshields. Chamber pumped down overnight. OMEGA slope = 0.98 HS water valves opened, no leaks detected. IGP1 = 5.9e-7 Torr IGP2 = 4.0e-7 Torr Tapping up manually. Final desired temperature = 1800C    Thursday, December 07, 2017, 11:51 TGHT tripped off. Turns out the vacuum limits have not been fully updated when they should have been and the old ones still apply. IGP1 reached 8e-5 Torr which tripped off the system. TGHT = 80A, 1.05V when the system tripped.

 Friday, December 08, 2017, 15:29

Interlocks have been updated.

TGHT should now run up to 500mTorr before tripping off.

Laura Lambert wrote:

Laura Lambert wrote: Laura Lambert wrote:  Thursday, December 07, 2017, 09:57 Each endcap is wrapped in a separate piece of graphite foil and placed in a target boat. There are also 4 coated springs, 2 on each side of the stack of endcaps. The boat is wrapped with 3-layers of Ta heatshields. Chamber pumped down overnight. OMEGA slope = 0.98 HS water valves opened, no leaks detected. IGP1 = 5.9e-7 Torr IGP2 = 4.0e-7 Torr Tapping up manually. Final desired temperature = 1800C    Thursday, December 07, 2017, 11:51 TGHT tripped off. Turns out the vacuum limits have not been fully updated when they should have been and the old ones still apply. IGP1 reached 8e-5 Torr which tripped off the system. TGHT = 80A, 1.05V when the system tripped.    Friday, December 08, 2017, 15:29 Interlocks have been updated. TGHT should now run up to 500mTorr before tripping off.

Friday, December 08, 2017, 15:41

IGP1 = 2.8e-7 Torr

IGP2 = 1.9e-7 Torr

Tapped up manually to 50A

Initiated auto-ramp at a rate of 0.2A/min up to 300A.

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

 Monday, December 11, 2017, 09:37

IGP1 = 2.4e-7

TGHT = 300A, 4.80V

OMEGA = 1175C

Tapping up manually...

 Monday, December 11, 2017, 14:19

Tapped up manually to 1800C

IGP1 = 2.1e-6 Torr

IGP2 = 2.1e-6 Torr

TGHT = 545A, 9.90V

OMEGA = 1810C

Will remain at max setpoints overnight and cool down in the a.m.

 Tuesday, December 12, 2017, 09:01

TGHT = 545A, 9.96V

OMEGA = 1833C

Remained at max setpoints for ~18hrs

IGP1 = 4.2e-7 Torr

IGP2 = 3.9e-7 Torr

Initiating auto-cool at 2.0A/min

 Wednesday, December 13, 2017, 11:05

Vented in air and removed from evap2 this morning.

 Monday, December 11, 2017, 14:21

Dave updated evap2 interlock limits to 500mTorr for TGHT and TBHT on friday

 Wednesday, December 13, 2017, 10:36

LP-FEBIAD loaded into evap2 this morning and pumped down.

Temperature measurements of the ionizer will be done by Fernando for ARIEL development.

Ta foil covering side holes on heat shield so no temp measurements can be done using OMEGA on side ports of evaporator as per request of Fernando

No Ta heat shields on container.

HS water valves opened, no leaks detected.

IGP1 = 2.3e-6 Torr

IGP2 = 1.7e-6 Torr

Tapped up to TGHT = 50A, 0.30V; TBHT = 50A, 0.59V

IGP1 = 1.8e-6 Torr

IGP2 = 1.4e-6 Torr

Initiating auto ramp for TGHT at 2.0A/min up to 350A and TBHT at 1.0A/min up to 210A

 Wednesday, December 13, 2017, 14:53

IGP1 = 7.6e-7 Torr

IGP2 = 6.4e-7 Torr

TGHT = 350A, 5.85V

TBHT = 210A, 3.02V

TGHT and TBHT will be adjusted accordingly for temperature measurements...

Thursday, December 14, 2017, 09:16 

IGP1 = 2.1e-7 Torr

IGP2 = 1.7e-7 Torr

TGHT = 385A, 6.80V

TBHT = 210A, 3.01V

Tapped up to TGHT = 400A, 7.11V

Stopped for temperature measurements.

Tapped up to TGHT = 450A, 8.20V

 Friday, December 15, 2017, 09:50

IGP1 = 1.2e-7 Torr

IGP2 = 9.6e-8 Torr

TGHT = 350A, 5.82V

TBHT = 210A, 2.94V

Initiating auto-ramp to TGHT = 650A

Monday, December 18, 2017, 10:43

Temperature measurements done.

Initiated auto-cool.

TGHT cooling at 2.0A/min and TBHT at 1.0A/min.

 Tuesday, December 19, 2017, 11:40

Vented in air and removed from evap2 today.

Monday, February 19, 2018, 13:39

LP-FEBIAD loaded into evap2 this morning and pumped down.

Temperature measurements of the ionizer will be done by Fernando for ARIEL development.

Ta foil covering side holes on heat shield so no temp measurements can be done using OMEGA on side ports of evaporator as per request of Fernando

No Ta heat shields on container.

HS water valves opened, no leaks detected.

IGP1 = 2.75e-6 Torr

IGP2 = 1.42e-6 Torr

Tapped up to TGHT = 50A, 0.53V; TBHT = 50A, 0.56V

IGP1 = 2.64e-6 Torr

IGP2 = 1.35e-6 Torr

Initiating auto ramp for TGHT at 2.0A/min up to 350A and TBHT at 1.0A/min up to 210A

 Tuesday, February 20, 2018, 09:15

IGP1 = 6.9e-7 Torr

IGP2 = 3.8e-7 Torr

TGHT = 350A, 5.98V

TBHT = 210A, 3.02V

TGHT and TBHT will be adjusted accordingly for temperature measurements...

 Tuesday, February 27, 2018, 14:55

Temperature measurements done.

Initiated auto-cool.

TGHT cooling at 2.0A/min and TBHT at 1.0A/min.

 Wednesday, February 28, 2018, 10:39

Tuesday, December 19, 2017, 11:40

Vented in air and removed from evap2 today.