The Helicoil had mostly pulled out of the old one.

Thursday, November 25, 2021, 13:58: Insulator replaced. EVAP 2 is ready for use with ISAC targets.

Old HS sprang a leak in the copper tubing.  

HS#44378-15

Tuesday, April 12, 2022, 13:35: Roughing. 

Tuesday, April 12, 2022, 13:49: TP1 switched on. 

Tuesday, April 12, 2022, 13:57: TP1 stable (green).

Tuesday, April 12, 2022, 14:10: Vacuum @ 3.71e-05T & dropping.

Tuesday, April 12, 2022, 14:11: HS waterline opened. 

Tuesday, April 12, 2022, 14:12: Vacuum @ 3.32e-05T.

Tuesday, April 12, 2022, 14:22: Vacuum @ 2.19e-05T (Stable).

 Tuesday, May 10, 2022, 14:42: TV551 Varian. SN: 202311 (Slightly active from BL1A - will not cross contaminate. Field only - Tagged) was removed as it was meant to be a temporary fix. Replacement (Refurbished) pump is to be installed. (Tomorrow - Use slow start function as per vacuum group) 

Thursday, May 12, 2022, 13:30: Agilent TP & hardware installed.

SN: IT21381010 

Thursday, May 12, 2022, 13:41: Roughing.

Thursday, May 12, 2022, 13:46: Halt. 

Friday, May 13, 2022, 07:05: Roughing. 

Friday, May 13, 2022, 07:18: TP1 on.

Friday, May 13, 2022, 07:23: Up to 14 KRPM. Pause/Halted startup (Whining?). Slow start w/ vacuum group.

Process to perform a TP slow start:

- Hold both top buttons on the controller for about 3 seconds

- Right Yes/No left to continue. 

- Advance to soft start - 20 min. 

- Back to remote start & go.

Friday, May 13, 2022, 08:26: TP1 on w/ slow start.

Friday, May 13, 2022, 08:39: 13 KRPM & climbing.

Friday, May 13, 2022, 09:10: TP at full speed. 38 KRPM. 0.5A 9w. This pump whines, but is operating fine. Likely will switch again when another is available. (It appears to have been dropped, Noted by Edi. Likely when shipped) 

Friday, May 13, 2022, 09:14: TP off. Slow start function off. Back to normal function. 

Thursday, June 09, 2022, 11:25

Total number of foils: 14 electrospun fiber pellets 

Total weight = 208.3 g

container has 3 Ta heat shields.

Desired temperature at 1800 C

Omega slope set at 0.990 

Good vac = 3.0e-5 Torr,

Bad vac = 5.0e-5 Torr.

Pumping down in progress

 Thursday, June 09, 2022, 11:25

chamber pumped down below 5e-5

initiate auto ramping, 1A/min ----> 100 A

 (see eLog 581)

Flora Wu wrote:

Thursday, June 09, 2022, 11:25 Total number of foils: 14 electrospun fiber pellets  Total weight = 208.3 g container has 3 Ta heat shields. Desired temperature at 1800 C Omega slope set at 0.990  Good vac = 3.0e-5 Torr, Bad vac = 5.0e-5 Torr. Pumping down in progress  Thursday, June 09, 2022, 11:25 chamber pumped down below 5e-5 initiate auto ramping, 1A/min ----> 100 A

 Thursday, June 09, 2022, 19:16

Pressure came down below 10e-5 Torr as TGHT ramped up to 100A.

Continue auto ramping to reach 250A at 1A/min.

 Thursday, June 09, 2022, 22:52

TGHT is hovering around 127A/1.68 V due to erractic pressure, see attachment #1..  Notice the backing line is at atm pressure - I don't recall this happened in the past. 

Temp is still low to be detected on Omega.  Will leave this overnight.

 Friday, June 10, 2022, 09:07

TGHT has been holding at 250A/3.76V since 2:45am.  Pressure comes down as THGT above 200 A.  Backing line is back down normal.

Temp reading at 1040 C. 

see attachment #2.

Continue to ramp up to 300A, monitoring temp/pressure.

 Friday, June 10, 2022, 10:31

TGHT reached to 300A/4.63V, temp at 1145C.  Pressure at 1.8e-6 and coming down. 

Continue to ramp up to 350A.

 Friday, June 10, 2022, 11:59

TGHT at 350A/5.66V, temp at 1300 C, Pressure at 8.1e-7 Torr, and coming down.

Continue to ramp up to 400A.

Friday, June 10, 2022, 13:19

TGHT reached to 400A/6.73V.  Pressure coming down from 1.04e-6 Torr. 

Temp at 1690.  Will set up manually to reach 1800 C. 

 Friday, June 10, 2022, 13:50

TGHT stepped up to 432A/7.42V.  Pressure coming down from 1.3 e-6 Torr. 

Temp at 1800 C.  See attachment#3 and #4 for the screenshot and temp-current plot.

Dumped striptool data to /usr1/evpr/carbonize_pan10_elog581_a and b.

Will keep at this setting over the weekend, and cooling down will take place on Sunday evening. 

 Sunday, June 12, 2022, 22:30

TGHT has been holding at 432A/7.40V since Friday.  Temperature has gone up slightly to 1825. 

See attachment#5 for the overall process. 

Initiated cooling down at -2A/min.

Chamber will be vented on Monday morning.

Monday, June 20, 2022, 14:50

A new Turbo pump was installed this morning and it was soft started.  It has operated correctly and it is ready for use.  Derek O.  installed it.

Previous pump had issues at start-up and was diagnosed as finished by Edi/

 Previous TP would only spin up to 4KRPM. New TP installed.

Monday, June 05, 2023, 14:50: Roughing. 

Monday, June 05, 2023, 15:10: Controller reset. TP on. 

Wednesday, August 07, 2024, 15:36: Roughing. Had initially been roughed & TP started w/ Marla CS, however it timed out. Restarting.

Wednesday, August 07, 2024, 15:37: TP on.

Wednesday, August 07, 2024, 15:46: Tripped at 4 KRPM. Restarted. Up to 5 KRPM.

Failed to start.

Thursday, August 08, 2024, 10:00: TP started. 

Thursday, August 08, 2024, 10:12: TP Tripped but nearly spun up. Reset & Restarted. TP Green / on.