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.

Wednesday, September 25, 2019, 18:06

Target boat with a layer of niobium foil on the bottom is used to heat up Nb samples to 1400 C for 4 hrs.

The niobium samples are wrapped in a Nb foil.

Boat is wrapped with 2 layers of Ta foil, careful to avoid touching samples.

Thursday, September 26, 2019, 18:10 

The target assembly was exchange to a clean one e-log 459 and the Nb arrangement was loaded into evap2.

Friday, September 27, 2019, 18:13

HS water valves opened, no leaks detected.

Tapped up manually to 40 A.

IGP1 = 9.54e-7 Torr

Setting auto-ramp rate at 0.2 A/min to max setpoint of 100 A.

Vacuum stable.

Setting auto-ramp at 1 A/min to 300 A lead to ~1200 C.

Autoramping at 1 A/min to 400 A will stop at 1400 C.

Temperature reading is 1400 C at:

TGHT = 5.61 V, 345.656 A

The temperature reading went to 1408 C on Omega and 1417 C on Micron so the current was dropped to 342.537 A and 5.56 V

The temperature went to 1418 C on Omega and the current was dropped to 339.281 A

After 4 hours at 1400 C, the Nb was cooled down

The final pressure was 3.07e-7 Torr 

The EVAP2 was vented with air and the Nb was removed. 

Friday, October 04, 2019, 11:37

Each endcap is separated with a disc of graphite foil and rolled into packs of 5 within a foil envelope in a target boat.

There are also 3 coated springs, one in between endcaps and two on either end

The boat is wrapped with 2-layers of Ta heatshields.

Chamber pumping down

OMEGA slope = 0.99

Will Tap TGHT up manually to 40 A then autoramp to 400A at 1A/min.

Final desired temperature on OMEGA (tap)= 1800C

Monday, October 07, 2019, 09:08

Sunday night heating started at 1A/ min on TGHT to 54 A

heating paused for 1 hour to allow IGP1 to equillibrate.  Then restarted at 1A/min to 400A as planned. 

This morning IGP1 = 1.3e-06 Torr

TGHT = 401A, 4.2V

OMEGA = 1550 C

Monday, October 07, 2019, 09:36

manually tapping to 1800 C

Monday, October 07, 2019, 14:09

Temperature @ ~1800 for 3.5 hours

TGHT= 495.4, 9.2 V

IGP1= 1.1e-06 Torr Pressure Steady there begin cooling

Cooling @ -2A/min

Tuesday, October 08, 2019, 14:14: Remove Flex line HS. 

HS: 42752-1

Waterlines not open yet.

Tuesday, October 08, 2019, 14:15: roughing.

Tuesday, October 08, 2019, 14:24: Turbo pump on. 

Tuesday, October 08, 2019, 14:32: TP @ speed. 

Wednesday, October 09, 2019, 13:24 

The initial pressure was 3.25e-7 Torr

The current was manually increased to 25 A on both TBHT and TGHT  at a rate of 1 A each 30 s for both heaters.

Wednesday, October 09, 2019, 13:33

At 1 pm an additional ram was made to TGHT 350 A and TBHT 200 at same rate.

 HS 42752-5 - Setup for Temperature mapping.

Friday, November 15, 2019, 13:26: Roughing. 

Friday, November 15, 2019, 13:36: Turbo pump on. 

Monday, November 18, 2019, 07:46: Waterlines opened. Vacuum ok @ 3.56e-07T.

Monday, November 18, 2019, 07:48: PS on.

Monday, November 18, 2019, 09:21: PS off. Vacuum slowly spiked to 1.23e-06T. Indicative of a small water leak. 

Monday, November 18, 2019, 09:24: HS waterlines purged. vacuum dropped to 5.54e-07T. 

Monday, November 18, 2019, 09:27: Valves closed. TP off. BP off.

Monday, November 18, 2019, 10:27: Venting.

Monday, November 18, 2019, 11:06: Gaskets checked / replaced. Roughing. 

Monday, November 18, 2019, 11:14: turbo pump on. 

Monday, November 18, 2019, 14:19: Waterlines opened. 

Monday, November 18, 2019, 14:23: Response on vacuum. Leak is still present & a higher rate (Has an immediate response). Turbos off. 

Monday, November 18, 2019, 14:28: Venting. 

Monday, November 18, 2019, 14:49: turbo pump on. 

Tuesday, November 19, 2019, 07:07: Waterlines opened. Leak is present.  Turbo pump off. 

Tuesday, November 19, 2019, 11:24: After venting, changed 1 gasket. Setup LD & completed a leak check with the lines pressurized to 75 PSI of He. 

Tuesday, November 19, 2019, 11:25: Roughing. 

Tuesday, November 19, 2019, 11:33: Turbo pump on. 

Wednesday, November 20, 2019, 08:59: Waterlines opened. Leak is present.  Turbo pump off.  

Wednesday, November 20, 2019, 11:26: FEBIAD Removed. U-Line installed to check Evap 2 Connection. FEBIAD examined outside. 

Wednesday, November 20, 2019, 11:34: Turbo pump on. 

Wednesday, November 20, 2019, 13:05: HPA off (Was running through HS line still. Vac @ 5.54e-06T).  

Wednesday, November 20, 2019, 13:07: Open waterline. Vacuum @ 3.88e-06T & dropping steadily.  

Wednesday, November 20, 2019, 13:12: Vacuum @ 3.69e-06T & dropping. No leak detected via Vac. 

Wednesday, November 20, 2019, 13:14: Waterline Closed / purged. Turbo pumps off. 

Wednesday, November 20, 2019, 13:58: Turbo pump on. 

Wednesday, November 20, 2019, 13:50: Cleaned seal / FEBIAD re-installed. Roughing.

Thursday, November 21, 2019, 08:06: Waterlines opened. Vacuum ok @ 4.10e-07T. 

Notes:

1) The FEBIAD left cooling line was the culprit for the leaks. A fine copper build up was noted on the gasket /  sealing face. Images included. 

2) Evap 2 was leak checked separately as well & is OK.

 Thursday, November 21, 2019, 08:09: PS on. Leak issue resolved (Evap 2 Elog 466). Vacuum @ 4.10e-07T.

Thursday, November 21, 2019, 08:15: Auto-ramping TGHT / TBHT @ 2 A per min to 300 / 150 A. 

 Friday, November 22, 2019, 18:18:

Friday, November 22, 2019, 18:18: Roughing

Friday, November 22, 2019, 18:23: Turbo on .

Friday, November 22, 2019, 18:32: Turbo at speed 

 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.

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.  

 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. 

 BP1 swapped with RP2 (TS beamline)

U-line installed.

Wednesday, August 05, 2020, 13:37: Roughing. 

Wednesday, August 05, 2020, 13:39: Open RV1 to EVAP 2 chamber.

Wednesday, August 05, 2020, 14:08: Turbo pump on. 

Wednesday, August 05, 2020, 14:17: Turbo pump on (green) / Shut - off. 

Wednesday, August 05, 2020, 14:18: BP1 off. Runs ok. 

Flex line HS installed. New SS gaskets. 

Wednesday, August 12, 2020, 08:56: Roughing (Check).

Wednesday, August 12, 2020, 09:17: Ready for turbo pump.

Wednesday, August 12, 2020, 09:20: BP1 Off. Venting. 

Saturday, September 05, 2020, 12:56

A Ta tube was wrapped with 3 tantalum foils,

a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed.

The tube was set in the EVAP2 

IGP1 = 3.6e-7 Torr 

Saturday, September 05, 2020, 12:57

Autoram set to 10A/30 s to 200 A

 Saturday, September 05, 2020, 13:11

TGHT = 2.7 V, 198.9 A

IGP1 =3e-6 Torr

Autoramp set to to 300 A at 5A/30s 

 Saturday, September 05, 2020, 14:45

IGP1 = 5.1e-7 torr

TGHT = 4.5 V, 303 A

Oemga = 1259 C, 

AP = 1233.5 C

Autoramp set to 450A at 5 A/30s 

 Saturday, September 05, 2020, 15:05

TGHT = 7.3 V, 457.7 A

IGP1 = 2.8e-6 Torr

Omega = 1722 °C

AP = 1572.2 °C

Saturday, September 05, 2020, 15:16 

TGHT = 9.2 V, 552.5 A

IGP1 = 7.5e-6 Torr

Omega = 2016 °C 

AP= 1735.9 °C

Saturday, September 05, 2020, 21:33 

IGP1 = 1.1e-6 Torr

TGHT = 11.2 V, 651.9 A

Omega = 2300 °C

Sample loaded into a vertical target boat. Flex line HS removed, SS waterline HS installed -AS.

Thursday, September 24, 2020, 13:22: Roughing.

Thursday, September 24, 2020, 13:54: Turbo pump on. 

Friday, September 25, 2020, 10:30 

Target boat with a layer of niobium foil on the bottom is used to heat up Nb samples to 1400 C for 4 hrs.

OMEGA slope = 0.99

The niobium samples are wrapped in two layers of  Nb foil.

Boat is wrapped with 2 layers of Ta foil, careful to avoid touching samples.

Friday, September 25, 2020, 20:00 

autoramp to 345 A

 Friday, September 25, 2020, 20:39

TGHT = 345 A, 5.4 V

OMEGA = 1296 C

IPG1= 8.1 e-07 Torr

Ramp manually to 1400 C

 Friday, September 25, 2020, 20:51

reached 1400 C on OMEGA at TGHT = 476 A

Friday, September 25, 2020, 20:59

OMEGA increased to 1410, lowered TGHT to 468 A to get back to 1400 C on OMEGA 

Friday, September 25, 2020, 21:40

Lowered TGHT to 463 A,  5.79 V to bring OMEGA to 1400 C from 1404 C

 Saturday, September 26, 2020, 00:51

Sample has been at 1400 C for 4 hours.

IGP1= 7.2 e-07 Torr

Cooling at- 2A/min

Darwin Ortiz Rosales wrote:

Friday, September 25, 2020, 10:30  Target boat with a layer of niobium foil on the bottom is used to heat up Nb samples to 1400 C for 4 hrs. OMEGA slope = 0.99 The niobium samples are wrapped in two layers of  Nb foil. Boat is wrapped with 2 layers of Ta foil, careful to avoid touching samples.  Friday, September 25, 2020, 10:35 Manually ramped TGHT to 40 A and kept at that current for approximately 15 minutes.   Then started autoramp at  1A/min up to 100 A  Friday, September 25, 2020, 16:58 IPG1= 4.7e-07 Torr TGHT =100.0 A, 1.3 V Start autoramp to TGHT to 300 A  @ 2A/min  @ 300A temperature = 1179 C   Friday, September 25, 2020, 20:00  autoramp to 345 A  Friday, September 25, 2020, 20:39 TGHT = 345 A, 5.4 V OMEGA = 1296 C IPG1= 8.1 e-07 Torr Ramp manually to 1400 C  Friday, September 25, 2020, 20:51 reached 1400 C on OMEGA at TGHT = 476 A Friday, September 25, 2020, 20:59 OMEGA increased to 1410, lowered TGHT to 468 A to get back to 1400 C on OMEGA  Friday, September 25, 2020, 21:40 Lowered TGHT to 463 A,  5.79 V to bring OMEGA to 1400 C from 1404 C  Saturday, September 26, 2020, 00:51 Sample has been at 1400 C for 4 hours. IGP1= 7.2 e-07 Torr Cooling at- 2A/min

 Monday, September 28, 2020, 09:36

Vented chamber - for Darwin.

Monday, September 28, 2020, 11:49

6 discs of np-SiC were loaded to the target boat wrapped with 3 layers of heat shields.

Desired temperature at 1500 C, (As per e-log 414/416, TGHT = 450A/7.31V, 3.28kW) 

Omega slope set at 1.05 (for carbide)

Good vac = 3.0e-5 Torr,

Bad vac = 5.0e-5 Torr.

Pumping down in progress

 Monday, September 28, 2020, 21:44

Pressure at 1e-6 Torr.  Initiated autoramping at 0.2A/min to reach 300 A.  Monitor temp.

 Wednesday, September 30, 2020, 11:39

TGHT reached to 300 A/ 4.5V, temp at 1130 C.  No coating on windows.

Continue to ramp up 330A.  Monitor temp.

 Wednesday, September 30, 2020, 16:38

TGHT reached 330 A / 5.04 V, temp at 1190 C. 

Ramp up to 400 A. Current pressure at 9.8 e-7 Torr.

Thursday, October 01, 2020, 10:28

TGHT reached 400 A/ 6.3V, temp at 1320 C.  Continue to ramp up to 450 A.

 Thursday, October 01, 2020, 16:44

TGHT reached to 450 A/ 7.4 V.  TEmp at 1500 C. 

Pressure at 1.35 e-6 Torr and coming down.   Continue to hold TGHT at 1500 C for at least 24 hr.

 Sunday, October 04, 2020, 16:49

TGHT has been holding at 450 A/ 7.3 V for nearly 3 days; temp has gone up and stabilized at 1554 C; pressure at 2.13 e -7 Torr.

Initiated cooling down at -2A/min.

 Monday, October 05, 2020, 10:02

Chamber vented.

 Wednesday, October 07, 2020

TP1 was not spinning up past 4krpm. Stalling & tripping out. Examined with Vacuum group, appears to be starting to seize. Exchange turbo pump.

Serial# 500937

Wednesday, October 07, 2020, 12:25: TP1 Exchanged. 

Wednesday, October 07, 2020, 12:38: Roughing. 

Wednesday, October 07, 2020, 13:55: Soft start initiated. Steps up krpm every 5 min. 10 steps.

Wednesday, October 07, 2020, 13:22 @ 24 krpm.  

Wednesday, October 07, 2020, 13:42: TP1 at speed. 38 krpm. 

Wednesday, October 07, 2020, 13:45: TP1 off. Soft start function off. Remote start configuration initiated. TP1 on. OK.