Friday, May 10, 2019, 16:54

A tantalum tube was coated with TaC,and wrapped with three tantalum sheets,

the tube was set in the EVAP2 to sinter the TaC coating.

EVAP2 is currently pumping down. 

 Sunday, May 12, 2019, 18:40

IGP1 = 3.01e-7 Torr

Manually tapped current TGHT to 40 A

IGP1 = 4.89e-Torr

at the IGP1 = 1.961e-6 Torr the autoramp was set to 1 A/min to 380 A

IGP1 = 6.91e-7 Torr

TGHT = 6.133 V, 386.8 A, temperature 1682  C

IGP1 = 7.77e-7

TGHT=6.36V, 399A 1730 C

After 4 hours at 1895 C TGHT = 7.435 V and 445.781 A

TGHT was set -2 A/min to 0 A

The EVAP2 was vented with air and the tube was removed

 Tuesday, May 14, 2019, 13:56: Removed old HS w/ flexible lines & swapped in the FEBIAD. (HS waterlines are still purged.) Roughing.

Tuesday, May 14, 2019, 14:06: Turbo pump on. 

Tuesday, May 14, 2019, 14:22: Waterlines opened. Vacuum ok @ 5.34e-05T & dropping. 

Wednesday, May 15, 2019, 06:21

IGP1 = 5.99e-7 Torr,

manually tapping to 40 A.

Autoramp set to 2A/min to TGHT=580 A and TBHT=290 A

Tuesday, May 21, 2019, 08:13

IGP1= 1.43e-7 Torr

TGHT = 580.875 A, 11.22 V

TBHT =  4.45 V, 309.219 A

Temperature 1004 C measured at Ta foil

Ramp-down was initiated with IGP1 = 1.423e-07 Torr

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

EVAP2 was vented with air

 Tuesday, May 21, 2019, 14:20 Test FEBIAD removed - AS.

 Tuesday, May 21, 2019, 14:33: Install flexible line evap 2 HS.

 Tuesday, May 21, 2019, 17:57

A tantalum tube previously coated with TaC and sintered was loaded with graphite foils.

The mass of the foils was 20.04 g.

The system will be heated to 2000 C to find out the corresponding current.

After that the tantalum tube will be trasferred to the EVAP1

and it will be heated there for 5 days. 

EVAP2 currently pumping down

 Thursday, May 23, 2019, 05:48

IGP1 = 2.516e-7 Torr

Manually tap to 50 A

Autoramp set to 1 A/min to 400 A

Thursday, May 23, 2019, 13:09 

IGP1 = 3.78e-6 Torr

TGHT = 6.4 V, 401.3 A

Temperature reading = 1629

Thursday, May 23, 2019, 13:09

Autoramp was set to 550 A at 1 A/min 

Stopped at 530 A

Thursday, May 23, 2019, 21:27

IGP1 = 6.77e-7 Torr

TGHT = 9.2175 V, 507.375 A

After 6 hours at ~2000 C the autoramp was set to -2 A/min to 0 A 

Friday, May 24, 2019, 8:46

EVAP2 was vented with air and the tantalum tube was removed, examined and transferred to EVAP1

Friday, May 24, 2019, 15:26

 A graphite insert with tantalum wires in its caps

was loaded in a tantalum tube, the system will be heated to 2000 C

and after 6 hrs at that temperature, it will be cooled and heated to 2000 C again.

The temperature will be hold at 2000 C for a 6 days.

Currently the chamber is being evacuated.

 Saturday, May 25, 2019, 06:01

IGP1 = 2.2e-7 Torr

Manually tapping to 50 A

Autoramp set to 1 A/min to 400 A

Saturday, May 25, 2019, 13:37

The autoramp was set to 450 A

Then it was manually tappe to 475 A 

Thursday, June 6, 2019, 16:43

A graphite insert with tantalum wires in its caps was loaded in a tantalum tube.

The system will be heated to 2000 C again (see elog 446)

Currently the chamber is being evacuated.

Friday, June 7, 2019, 16:40

Autoramp was set to 450 A at 1A/min to reach 2000 C

The temperature will be hold at 2000 C for a 4 days.

Tuesday, June 11, 2019, 16:46 

Autoramp is set to -2 A/min to 0 A

Wednesday, June 12, 2019, 17:01 

The tube present sever crystallization but is not broken and has some resistance against pressure.

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 

Wednesday, August 28, 2019, 06:00

A graphite insert (with conical caps) was loaded in tantalum tube 

the Ta tube was wrapped with 3 tantalum foils,

a tantalum cap was inserted in one side of the Ta tube and sealed.

The tube was set in the EVAP2 and the furnace was pumped down.

IGP1 = 1.23e-6 Torr.

The current was tapped to 50 A

Autoramp was set to 1 A/min to 400 A.

 Wednesday, August 28, 2019, 12:02

Autoramp reached 400 A

TGHT = 6.57 V, 404.4 A, IGP1=4.7e-6 Torr

Autoramp was set to 450 A at 1A/min

 Wednesday, August 28, 2019, 12:48

Autoramp reached 450 A

TGHT =7.526 V, 450.188 A, IGP1=5.88e-6 Torr

Autoramp was set to 500 A at 1A/min

Wednesday, August 28, 2019, 13:40

Autoramp reached 500 A, temperature 1880 C

TGHT =8.79 V, 501.094A, IGP1=7.48-6 Torr

Autoramp was set to 540 A at 1A/min 

Wednesday, August 28, 2019, 14:03

The autoramp was stopped at 520 A, because according to previous tests that current is enough to have 2000 C,

the temperature read was 1930 C

TGHT =9.23 V, 520.7 A, IGP1=7.8-6 Torr

Wednesday, August 28, 2019, 15:20

The autoramp was set to 540 A at 1A/min

When the ramp stopped the conditions were:

TGHT=9.59 V, 539.5 A, IGP1= 6.08e-6 Torr

Temperature= 1988 C

Manually tapped to 545 A the temperature reached 2000 C

Wednesday, August 28, 2019, 17:08 

To keep the temperature at 2000 or less the current was decreased,

TGHT= 8.91 V, 445.125 A, IGP1=9.93e-7 Torr

Max temperature read: 2001 C

Min temperature read: 1996 C

Tuesday, September 03, 2019, 11:15

The tube was stable at 1950-1960 C during the weekend but today at around 6 am it had a drop in the current indicating mechanical failure 

The autoramp was set to -2A/min to 0 A. 

The tube will be examined and in case that it is not broken it will be set in the EVAP1 to continue heating it.

Monday, September 09, 2019, 16:35  

The tube became brittle and broke.

Friday, September 06, 2019, 11:20

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

Desired temp=1900 C, Omega slope set =0.990

Chamber pumped down over night and will be initially tapped manually to 40A for both TGHT and TBHT.

Subsequently, current will be automatically ramped up in increments of 1A/min to reach 400A for TGHT and 230A for TBHT.

Then TGHT will be manually tapped to target temperature and allow to stabilize for a minimum of 3 hours.

Good vac at 3.0e-5 Torr

Bad vac at 5.0e-5 Torr

Friday, September 06, 2019, 11:32

IEVAP2:IGP1=9.6e-7 Torr

Tapping to 40A (TGHT and TBHT).

Friday, September 06, 2019, 12:54

Start autoramp

1A/min TGHT and TBHT

IGP1=4.0e-06 Torr

Friday, September 06, 2019, 13:29

TGHT = 70A, TBHT=70A, pressure started to spike rapidly so aborted autoramp and lowered the current to 66A for both TGHT and TBHT.

pressure continued to rise so tapped current to 60A.  A drop observed.  Will allow to stabilize.

Friday, September 06, 2019, 14:06

IGP1=5.3e-06 Torr.  Restart previous ramping. 

At 66A paused ramping.  IPG1= 1.0e-5 Torr

Friday, September 06, 2019, 15:44

IGP1=6.0e-6 Torr

Start modified autoramping: 0.4A/min for TGHT and TBHT.  Will manually tap up in the morning, over ham and eggs. 

Saturday, September 07, 2019, 10:52

 Will tap up to 423 A on TGHT as per attachment #1 regression

IGP1= 1.13e-6 Torr

OMEGA = 1802 C

TGHT= 401.0 A, 6.84V

TBHT=233.6A, 4.1V

Saturday, September 07, 2019, 11:06

Tapped up TGHT to 438A

OMEGA= 1903C

Will monitor and adjust if necessary.

Saturday, September 07, 2019, 15:06

IGP1 =  1.17e-6 Torr

TGHT = 7.46 V, 439.3 A

TBHT = 4.13 V, 233.4 A

Autoramps

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

Monday, September 09, 2019, 16:34

The EVAP2 was vented and the target container was removed. 

 Wednesday, September 11, 2019, 15:12

A target container coated with TaC elog 455 was loaded with an empty graphite cartridge and set it in the EVAP2

The system is currently pumping down.

The target container was wrapped with 3 new Ta heat shields.

The target container will be heated to 2000 C and the temperature will be held for 4 hours.

 The autoramp was set to:

TGHT 1 A/min, 450 A

TBHT 0.5 A/min, to 230 A

At 500 A on the TGHT, 20 additional amps were programmed to increased at 1 A/min, however, the autoramp increased the current to 520 A without stepping (see figure A). 

The final conditions were:

TGHT: 9.95 V, 565.59 A

TBHT: 4.18 V, 233.43 A

IGP1: 2.2 e-6 Torr

Friday, September 13, 2019, 11:16

After 4 hours the EVAP2 was cooled down

at a rate of TGHT 1 A/min and TBHT 0.5 A/min

The EVAP2 was vented with air.

Swapped out VCRs on HS to tray connection. (Right one felt slightly off)

Tuesday, September 17, 2019, 13:23: roughing.

Tuesday, September 17, 2019, 13:32: Turbo pump on. 

Tuesday, September 17, 2019, 13:44: waterlines re-opened. No vacuum response. Ok. @ 7.90e-05T & dropping. 

Wednesday, September 18, 2019, 08:05: Vacuum ok @ 6.87e-07T. Turbo pump off. 

Wednesday, September 18, 2019, 08:21: Venting. 

Pumped down again easy for Ta#59. Issue resolved.

 Leak noted on previous TaC sintering on HP FEBIAD # 42464-3.

Swapped out gaskets on HS flex line a re-tightened.

Monday, November 25, 2019, 11:31: Roughing.

Monday, November 25, 2019, 11:42: Turbo pump on. 

Monday, November 25, 2019, 13:38: Vacuum @ 7.29e-06T. 

Monday, November 25, 2019, 13:42: Waterlines opened. Vacuum slowly climbed to 7.57e-06T. Waterlines closed / purged. 

Monday, November 25, 2019, 13:47: Vacuum @ 6.83e-06T.

Monday, November 25, 2019, 13:50: Waterlines opened. Vacuum gradually climbed again. Waterlines closed / purged.

Monday, November 25, 2019, 13:51: Turbo pump off. 

Monday, November 25, 2019, 14:41: Vent. Check seals (All on HS line).

Monday, November 25, 2019, 14:48: Roughing. 

Monday, November 25, 2019, 15:06: Vacuum @ 1.22e-04T. Waterlines opened. Vacuum continued to pump down steadily to 8.86e-05T and dropping.

Monday, November 25, 2019, 15:07: Turbo pump off. 

Tuesday, December 03, 2019, 08:15: Waterlines opened. Vacuum ok @ 4.06e-07T

Tuesday, December 03, 2019, 08:23: Unable to start due to flow trip? PS off. 

Tuesday, December 03, 2019, 08:25: Turbo & Vac off. 

Tuesday, December 03, 2019, 08:51: Vented. Investigate. Install outer shields. Loose wire found on exterior paddle. Trip gone. Roughing. 

Tuesday, December 03, 2019, 09:03: Turbo pump on. 

Tuesday, December 03, 2019, 09:12: PS on. Vacuum @ 4.46e-05T and dropping. 

Wednesday, December 04, 2019, 10:21: Manually tapped up the TGHT / TBHT to 35 / 10 A.

Wednesday, December 04, 2019, 10:22: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min. 

FM

Wednesday, December 04, 2019, 13:48:  Auto-ramping TGHT / TBHT to 350 / 175 A @ 2 A per min. 

Wednesday, December 04, 2019, 14:20: Auto-ramping TGHT / TBHT to 400/ 190 A @ 2 A per min.  

Thursday, December 05, 2019, 10:58: Checking the striptool, approximately 30 minutes ago there was an oscillatory behaviour on the TGHT power. It went down to 0 in a very short time.

Temperature measurements were recorded and indicate a 70C difference from before the event.

 Thursday, December 05, 2019, 15:08: Auto-ramping TGHT / TBHT to 450/ 230A @ 2 A per min.  

Thursday, December 05, 2019, 19:05: Checking the striptool, at around 6 pm the TGHT power supply trip and didn't come back.

Thursday, December 05, 2019, 19:06: Drop in temperature indicates the target stop glowing.

Thursday, December 05, 2019, 19:07> Turning off power supply on EPICS and setting the slider to 0A.

I will ramp up TGHT in the morning while in the lab. 

Friday, December 06, 2019, 14:55: Ramping down TBHT to 0A @ 2A/min 

Tuesday, December 10, 2019, 09:11: Manually tapped up the TGHT / TBHT to 35 / 10 A 

Tuesday, December 10, 2019, 09:12:  Auto-ramping TGHT / TBHT to 400/ 230A @ 2 A per min.  

Aborted

 The TGHT PS was found to be defective.

It was uninstalled w/ Joel S: I2020-02-28-2. 

It was replaced with the conditioning station PS & connected. The chiller is not required and has been unplugged. 

Wednesday, March 04, 2020, 14:00. Controls Involved (PS still locked out via main breaker)

Wednesday, March 04, 2020, 14:31: Water supplies opened. All ok except Chiller (Disconnected from PS, but not the supply/return, do not open Chiller lines) 

Controls work ongoing.

Thursday, March 05, 2020 (Darwin)

Gelo finished installation of the other power supply S:_____________________.

It was tested and proved to be operational and epics controlled.  Tested up to 60A

Chiller interlock was removed as it is no longer needed.

Will wait for Aaron to swap FEBIAD assembly in EVAP 2.

 Monday, March 16, 2020, 13:47

Target material characteristics: Graphite cast of 0.965g/cm3, 287 D-shaped discs, disc area 0.969cm2, total mass of 9.972g, length 10.657cm.

The target material is loaded in a graphite cartridge.

The graphite cartridge is placed in a tantalum boat previously coated with TaC,

the Ta boat was wrapped with two used Ta heat shields.

The system is currently pumping down.

 Tuesday, March 17, 2020, 08:11

IGP1 = 3.18e-7 Torr

Current will be increased manually to 10 A, and then it will be autoramp to 500 A

During the input of the 10 A there was no anomaly with the pressure and the autoramp was set to:

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

 Tuesday, March 17, 2020, 09:03

After 30 min:

TGHT: 98.1 A, 1.48 V (the voltage is increasing)

IGP1 = 3e-4 Torr

The autoramp is set to 2 A each 10 s to 500 A

Tuesday, March 17, 2020, 09:52

At 500 A the temperature was ~1243 C

So, the autoramp was re started  2 A each 10 s to 520 A

TGHT= 510 A, 9.18 V

IGP1= 8.2e-5 Torr

Pressure decreasing.

Temperature register in iR2C: 1272 C

The temperature stayed at 1270 C, 

The autoramp is re started: 2 A each 10 s to 600 A

Tuesday, March 17, 2020, 10:24

TGHT: 10.693 V, 588.5 A

IGP1 max 7.4e-5 Torr

Temperature after 3 min at 588.5 A: 1368 C

Tuesday, March 17, 2020, 10:34 

The autoramp is re started: 2 A each 10 s to 650 A

Tuesday, March 17, 2020, 10:46

TGHT=11.99 V, 637.6 A

IGP1=5.5e-5 Torr (8e-5 Torr max)

Temperature 1459 C

The current and voltage drop 10 A and 0.3 V respectively when the autoramp is stopped

Tuesday, March 17, 2020, 10:53

The autoramp is re started: 2 A each 10 s to 700A 

Tuesday, March 17, 2020, 11:04

TGHT: 13 V, 686.59 A

IGP1: 6.2e-5 Torr (Max 8.7e-5Torr) 

Temperature: 1507 C

Tuesday, March 17, 2020, 11:05

 The autoramp is re started: 2 A each 10 s to 800A 

Tuesday, March 17, 2020, 11:16

TGHT=14.29 V, 759 A

IGP1: 8.6e-5 Torr (Max 1e-4 Torr)

Temperature 1527 C

There is a current discrepancy in EPICs (see current discrepancy picture),

the autoramp stopped at 761 A because EPICS? reads 800 A

Increasing current manually. 

Increasing the current manually did not work, because set current is at fake maximum 

 Tuesday, March 17, 2020, 13:43

The temperature stabilized to 1567 C. The current however was not stable ( look at the CarbonTarget - Max current)

an autoramp is set to -2 A  each 10 s to 0A

The set current is going down but not the epics reading current neither the temperature. I assume the current will star going down when the set and the reading current from epics are the same.

Tuesday, March 17, 2020, 13:50

Autoramp was stopped, and current was reduced manually, at around 652 A (set current) the reading current started going down (639.5 A) 

Autoramp is set to -2 A each 10s to 0 A

The tantalum boat deformed and the graphite cartridge rim broke 

Friday, March 20, 2020, 19:39

The target material is loaded in a graphite cartridge.

The graphite cartridge is placed in a new tantalum boat previously without TaC,

the Ta boat was wrapped with three new Ta heat shields.

The system is currently pumping down. 

Monday, March 23, 2020, 07:49

IGP1 = 2.2e-7 Torr

Good vacuum= 3.00 e-5 Torr

Bad vacuum = 5.00 e-5 Torr

Ramping TGHT to 40A at 0.5A/min 

Monday, March 23, 2020, 10:35

Due to the COVID-19, non-essential activities are wrapped up,

the conditioning of the carbon target will be postponed until further notice 

Gradually open waterlines under vacuum after period of no use.

Wednesday, May 20, 2020, 07:17: Vacuum @ 1.13e-06T

Wednesday, May 20, 2020, 07:19: Hot lab cooling water return opened. Vacuum @ 1.13e-06T.

Wednesday, May 20, 2020, 07:22: Hot lab cooling water supply opened. Vacuum @ 1.11e-06T.

Wednesday, May 20, 2020, 07:29: Vacuum remains stable @ 1.11e-06T.  

Marla Cervantes wrote:

Friday, March 20, 2020, 19:39 The target material is loaded in a graphite cartridge. The graphite cartridge is placed in a new tantalum boat previously without TaC, the Ta boat was wrapped with three new Ta heat shields. The system is currently pumping down.  Monday, March 23, 2020, 07:49 IGP1 = 2.2e-7 Torr Good vacuum= 3.00 e-5 Torr Bad vacuum = 5.00 e-5 Torr Ramping TGHT to 40A at 0.5A/min  Monday, March 23, 2020, 10:35 Due to the COVID-19, non-essential activities are wrapped up, the conditioning of the carbon target will be postponed until further notice

 Wednesday, May 20, 2020, 12:50

On May 19 the pumps of EVAP2 were turned on to purge the system

Today Aaron made a leak check, for details, visit elog-481

Currently IGP1 = 8.17e-7 Torr

 Thursday, May 21, 2020, 09:41

IGP1 = 4.5e-7 Torr

TGHT = 0.03 V, 0.028 A

Current will be increased manually to 10 A, and then it will be autoramp to 500 A

Whit this power supply the current increments are register since the beging 

TGHT = 0.145 V, 10.35 A

During the input of the 10 A there was no anomaly with the pressure and the autoramp was set to 50A:

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Thursday, May 21, 2020, 10:39

The autoramp reached the 50 A set

TGHT = 0.65 V, 49.05 A

Power supply = 0.64 V, 50 A

IGP1 = 4.7e-7 Torr

Everything looks good, autoramp is set to 80 A same conditions

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

 Wednesday, May 27, 2020, 10:22

IGP1 = 3.2e-7 Torr

TGHT = 0.186 V, 0.028 A

The autoramp is set to 50A:

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Wednesday, May 27, 2020, 10:40

 TGHT = 1.17 V, 50.9 A

PS = 1.21 V, 50 A

IGP1 = 8e-4 Torr and going down

Autoramp is set to 80 A same conditions

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr

Wednesday, May 27, 2020, 12:29

TGHT = 1.59 V, 80.04 A

PS = 1.58 V, 80 A

IGP1 =  2e-4 Torr and going down

Autoramp is set to 100 A,conditions:

1 A each 20 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Wednesday, May 27, 2020, 12:38

TGHT = 1.97 V, 100.35 A

IGP1 = 4e-4 Torr

Autoramp is set to 120 A,conditions:

1 A each 20 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

 Wednesday, May 27, 2020, 12:48

TGHT = 2.27 V, 119.1 A

IGP1 = 4e-4 Torr

Autoramp is set to 190 A,conditions:

1 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Wednesday, May 27, 2020, 13:03

TGHT = 3.4 V, 191.25 A

IGP1 = 3e-4 Torr

Autoramp is set to 190 A,conditions:

2 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Wednesday, May 27, 2020, 13:36 

TGHT = 7.8 V, 423 A

IGP1 = 3e-4 Torr

Autoramp is set to 450 A,conditions:

2 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr 

Wednesday, May 27, 2020, 13:43

TGHT = 8.5 V, 451.6 A

IGP1 = 2e-4 Torr

Autoramp is set to 520 A,conditions:

2 A each 10 s with a good vacuum of 3e-2 Torr and a bad vacuum 5e-2 Torr  

Wednesday, May 27, 2020, 14:02 

TGHT = 10.3 V, 508.16 A

Power supply = 10.39 V, 506 A

Omega = 2000 degC

AP = 2046.4 degC

After 3 hours at 2000 degC, the autoramp was set to 0 A,

conditions: -2 A each 10 s.

Note: There was a voltage drop of 0.6 V (fig. elog-484-fig2)

 Darwin reported that he was unable to achieve vacuum of 150mTorr. The flex-line HS had been removed last week for modifications. SS gaskets received today. Replaced HS gaskets (Cu). 

Monday, July 13, 2020, 11:00: Roughing. 

Monday, July 13, 2020, 11:44: Vacuum to 200mTorr. Venting.

Monday, July 13, 2020, 11:55: Roughing. HS waterlines were opened. No visible leak detected.

Monday, July 13, 2020, 12:32: Venting. Vacuum to 175mTorr.

Monday, July 13, 2020, 12:34: Roughing.  

Monday, July 13, 2020, 15:21: Turn off the roughing pump. Vent in the am & plan to remove the HS to leak check the HS & EVAP 2. 

Tuesday, July 14, 2020, 07:42: Venting. 

Tuesday, July 14, 2020, 08:23: Flexible line HS removed. U-Line installed. Roughing. 

Tuesday, July 14, 2020, 08:54: Turbo pump on. 

Tuesday, July 14, 2020, 11:15: Vacuum @ 3.14e-06T. Turbo & Roughing pump off. 

Tuesday, July 14, 2020, 11:25:

HS leak checks:

0.0e-08 atm-cc/sec 

0.0e-07 atm-cc/sec @ 75 PSI He w/ sniffer.

0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer. (Note HS is very dirty inside)

Tuesday, July 14, 2020, 11:35: Venting EVAP 2. He bottle connected on "Air-In" on the HS water supply line. 

Tuesday, July 14, 2020, 13:50:

Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.

Tuesday, July 14, 2020, 13:53: Roughing.

Tuesday, July 14, 2020, 17:33: Turbo pump on. 

Wednesday, July 15, 2020, 10:31: Turbo pump off. 

Wednesday, July 15, 2020, 12:02: HS Leak checked in the cold lab: 0.0e-07 atm-cc/sec @ 120 PSI He w/ sniffer.

Wednesday, July 15, 2020, 12:34: Venting. 

Wednesday, July 15, 2020, 13:37: Installed flex-line HS. Pressurized the HS lines on EVAP 2 w/ 30 PSI He for 10 minutes. Remained @ 0.0e-07 atm-cc/sec.

Wednesday, July 15, 2020, 13:42: Roughing. 

Wednesday, July 15, 2020, 14:16: Turbo pump on. 

Wednesday, July 15, 2020, 15:59: Vacuum @ 3.85e-06T 

Wednesday, July 15, 2020, 16:00: Waterline opened. No immediate response on Vacuum. 

Wednesday, July 15, 2020, 16:03: Vacuum @ 3.69e-06T and continuing to drop.