Wednesday, March 29, 2017, 15:15: DAC power supply appears to have failed. Pop sound and electrical smoke/smell noticed.

Tuesday, April 04, 2017, 14:15: Kepco BOP 500M power supply replaced with back up Kepco BOP 500M.

Tuesday, April 04, 2017, 14:32: No response from new power supply. All connections in OK. Further inquiry required.

Thursday, April 06, 2017, 12:06: Roughing.

Thursday, April 06, 2017, 13:07: Turbo pumps on.

Thursday, April 06, 2017, 13:18: Ion gauge on.

Thursday, April 06, 2017, 13:25: RGA filament error FL5. RESET RGA.

Thursday, April 06, 2017, 13:34: RGA on.

Friday, April 07, 2017, 08:35: Waterlines opened. No response on RGA. Vacuum @ 3.24e-07T

Monday, April 10, 2017, 11:51: Vacuum unstable. Venting to investigate.

Monday, April 10, 2017, 11:52: Turbos stopped.

Monday, April 10, 2017, 14:57: Roughing.

Monday, April 10, 2017, 15:18: Turbos started.

Monday, April 10, 2017, 15:23: TP1 at speed. Opened gases.

Monday, April 10, 2017, 15:26: Turbos at speed. Vacuum at 2.0E-5 T

Tuesday, April 11, 2017, 16:55  : Stopped turbos.

Tuesday, April 11, 2017, 17:01: Venting through turbos to replace seals on HS

Tuesday, April 11, 2017, 17:48: Turbos started

Thursday, April 20, 2017, 09:10: Assembly removed from test stand.

The vacuum behaved erratic over night with excursion up into the mid 10^-6 Torr range. To investigate the chamber was vented. With the doors open, the o-rings and sealing surfaces were cleaned. When pumping down again a vacuum leak could be heard at the front door by the lock. The chamber was vented again twice, finally the two o-rings were swapped. This removed the large leak. The door is prevented from contacting the box at the lock, which is likely the source of the leak.

A water to vacuum leak has been found on FS#3. The leak is not detected on the leak detector, but can be seen as an increase in vacuum and on partial water pressure on the RGA

Wednesday, April 12, 2017, 17:11: The leak is on circuit EG (Coil +). Confirmed with water pressure

Wednesday, April 12, 2017, 17:21: RGA off. Turbos stopped.

Wednesday, April 19, 2017, 13:00: Leak detector hooked up to TS. (Check Turbo)

Wednesday, April 19, 2017, 14:00: He to FS#3.

Wednesday, April 19, 2017, 14:31: Minimal response on leak detector. No response on RGA.

Wednesday, April 19, 2017, 14:36: Manual valve closed. Leak detector off. RGA off.

Wednesday, April 19, 2017, 14:37: FS#3 purged.

Wednesday, April 19, 2017, 14:39: Ion gauge off. Turbos off.

Wednesday, April 19, 2017, 14:44: Leak detector disconnected.

Thursday, April 20, 2017, 07:35: Venting

Thursday, April 20, 2017, 09:10: TRI-COIL CTL-FEBIAD removed.

Thursday, April 20, 2017, 09:23: Water lines (E) (G) removed w/ block. 

Thursday, April 20, 2017, 09:30: Roughing.

Thursday, April 20, 2017, 10:04: Turbos on.

Thursday, April 20, 2017, 13:15: Leak detector attached & turned on.

Thursday, April 20, 2017, 13:25: Water lines FS#5 opened to create loop. Pressurized @ 30 PSI.

Thursday, April 20, 2017, 13:45: RGA on.

Thursday, April 20, 2017, 13:58: All lines opened, purged, and re-pressurized @ 30 PSI with He.

Thursday, April 20, 2017, 14:15: Minimal response on Leak detector. No response on RGA.

Friday, April 21, 2017, 07:26: Vacuum @ 4.87E-07T. No He response on RGA. Lines still pressurized @ 30 PSI of Helium.

Friday, April 21, 2017, 10:19: Vacuum level close, but not optimal after 24 hrs. 2e-07T range is optimal.

Friday, April 21, 2017, 10:22: Adjustment of Turbo (TSG:TP1B) flanges. Stud Flange to Chamber (loose nuts found). brief vacuum spike noted.

Friday, April 21, 2017, 10:27: Turbo pump flange to Stud Flange tightened. No change on vacuum.

Friday, April 21, 2017, 10:41: Test Stand Exhaust cleaned. Clog noticed. Monitor Vacuum

Monday, April 24, 2017, 10:24: Three leaks found on FS#3. Two on the soldered ends of the VCRS (Mid-line) and one on the block. Requires repair/replacement.

Tuesday, May 02, 2017, 08:32 : RGA off.

Tuesday, May 02, 2017, 08:33: Ion gauge & Turbos off.

Tuesday, May 02, 2017, 12:55: Venting

Tuesday, April 18, 2017, 07:30: TSG : TP1B Tripped on Saturday.

Tuesday, April 18, 2017, 07:40: TSG : BV1B opened. TSG : TP1B restarted.

Tuesday, April 18, 2017, 07:48: TSG : TP1B failed to restart.Turn off.

Tuesday, April 18, 2017, 07:59: TSG : BV1B opened. TSG : TP1B restart attempt. No audible response detected.

Tuesday, April 18, 2017, 08:01: The turbo pump is off and BV1B closed. Fault report entered #9815.

Tuesday, April 18, 2017, 09:40: Ion gauge, remaining turbo pump off.

Tuesday, April 18, 2017, 13:00: Vacuum Group arrival to change TSG : TP1B.

Once the turbo pump cooling line was loosened slightly, a slight water leak occurred. Line snapped. Water leak. Valves to all turbo pump cooling closed.

***NOTE*** - From Thursday, November 24, 2016, 08:05: TMS:TP2

Friday, November 25, 2016, 14:45: Turbos at speed. Vacuum at 1.9E-5 T

*** Note *** : One of the copper cooling lines was leaking. The line was fixed. Monitor. <---- Due to this recurring issue, the decision was made to air cool the turbo pumps.

Tuesday, April 18, 2017, 14:10: Air cooling to replace water cooling. TSG : TP1A already has air cooling. Replace the cooling on the other 3 of 4 turbo pumps.

Tuesday, April 18, 2017, 15:27: All turbo pump cooling replaced with air cooling. TSG : TP1B successfully replaced.

Wednesday, April 19, 2017, 07:57: Roughing.

Wednesday, April 19, 2017, 09:01: Turbo pumps on. Bypass made on water flow (Still air cooled overall)

Wednesday, April 19, 2017, 09:15: TSG :TP1A accidentally tripped. Restarted.

Wednesday, April 19, 2017, 09:42: Both turbo pumps off. Unable to achieve proper vacuum.

Wednesday, April 19, 2017, 11:04: Roughing.

Wednesday, April 19, 2017, 11:44: TSG :TP1A on.

Wednesday, April 19, 2017, 11:51: TSG :TP1B on.

Check to fit lines FS#3

Tuesday, May 02, 2017, 14:00: Rouging. 

Wednesday, May 03, 2017, 07:07: Venting.

Check final fit. Mark up FS#3.

Wednesday, May 03, 2017, 08:11: Roughing.

Wednesday, May 03, 2017, 12:42: Venting.

Thursday, May 04, 2017, 13:35: FS#3 re-installed.

Thursday, May 04, 2017, 13:47: Roughing  w/ UC#20 IG-LIS heat shield.

Thursday, May 04, 2017, 13:48: Roughing.

Thursday, May 04, 2017, 14:09: Turbos on.

Friday, May 05, 2017, 07:35: RGA on. Vacuum @ 1.56e-06T

Friday, May 05, 2017, 07:37: Waterlines opened gradually. Vacuum increased to 1.64e-06T. Response noted on RGA.

Friday, May 05, 2017, 07:45: Vacuum Increase into e-05T range. All waterlines turned off & purged.

Friday, May 05, 2017, 08:00: Vacuum decreased to 1.85e-06T.

Friday, May 05, 2017, 08:22: Open lines one by one & monitor. Vacuum @ 1.76e-06T.

Friday, May 05, 2017, 08:26: FS#4 TBHT cooling: Ok, No response.

Friday, May 05, 2017, 08:27: FS#2 TGHT cooling: Ok, No response.

Friday, May 05, 2017, 08:28: FS#5 HS cooling: Ok, No response.

Friday, May 05, 2017, 08:30: FS#3 EE cooling: Ok, No response.

Friday, May 05, 2017, 08:35: No immediate response.

Friday, May 05, 2017, 08:37: Vacuum spike into e-05T range.

Open lines one by one @ 10 minute intervals & monitor. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 09:30: FS#4 TBHT cooling: Ok @ 10 minutes. No RGA Response. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 09:40: FS#2 TGHT cooling: Ok @ 10 minutes. No RGA Response. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 09:50: FS#5 HS cooling: Ok @ 10 minutes. No RGA Response. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 10:00: FS#3 EE cooling

Friday, May 05, 2017, 10:01: No response @ 1 minute. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 10:02: No response @ 2 minutes. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 10:05: No response @ 5 minutes. Vacuum @ 1.56e-06T. Ok @ 6 min. ok @ 7 min.

Friday, May 05, 2017, 10:10: No response @ 5 minutes. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 10:11:39: Vacuum Increasing.

Friday, May 05, 2017, 10:12: Supply/Return closed. All lines purged.

Friday, May 05, 2017, 10:13: Vacuum @ 3.82e-06T and increasing.

Friday, May 05, 2017, 10:20: Vacuum @ 1.25e-05T. Line FS#3 closed.

Friday, May 05, 2017, 11:04: RGA off. Vacuum @ 1.56e-06T.

Friday, May 05, 2017, 11:05: Ion gauge. Turbos off.

Friday, May 05, 2017, 12:03: He lined into cooling. Venting.

New O-rings installed on FS#3.

Friday, May 05, 2017, 14:24: Roughing.

Friday, May 05, 2017, 14:34: Waterlines reconnected to air lines. He likely still in lines. May show in RGA if there's an issue prior to opening the waterlines.

Friday, May 05, 2017, 14:47: Turbos started.

Friday, May 05, 2017, 17:59: Water leak still present on FS#3

Monday, May 08, 2017, 08:54: Line re-route on FS#3. Return line on (F) re-routed to Return line on (K). (EE)

Monday, May 08, 2017, 09:00: Open water into line FS#3 wait 10 minutes. Vacuum @ 4.52e-07T.

Monday, May 08, 2017, 09:12: Vacuum @ 4.52e-07T. Lines purged. No response on Vacuum or RGA.

Monday, May 08, 2017, 09:20: Line re-route on FS#3 through (K) supply to (G) & return on (E)

Monday, May 08, 2017, 09:28: Vacuum increased to 6.41e-07T. Response noticed on RGA. FS#3 purged & closed.

Monday, May 08, 2017, 09:30: Slow Vacuum increase to 6.67e-07T & climbing.

Monday, May 08, 2017, 10:13: Vacuum has decreased.

Monday, May 08, 2017, 10:26: Line re-route on FS#3 through (K) supply to (H) & return on (F).

Monday, May 08, 2017, 10:20: Open water into line FS#3 wait 10 minutes. Vacuum @ 4.69e-07T.

Monday, May 08, 2017, 10:30: Vacuum @ 4.60e-07T. Lines purged. No response on Vacuum or RGA.

Monday, May 08, 2017, 10:39: Spike on RGA while tightening (G)

Monday, May 08, 2017, 12:02: RGA off. Ion gauge & turbos off

Monday, May 08, 2017, 14:14: Vented. Lines adapted to leak detector on line (G) of FS#3. Line (E) blanked off. Check for leaks.

Monday, May 08, 2017, 14:49: Roughing.

Further purging of the lines required. Leak detector unable to achieve vacuum in the lines. Adapters removed. Line re-route on FS#3 through (K) supply to (G) & return on (E) for purge.

Tuesday, May 09, 2017, 07:30: Venting & Purging. Purge for a minimum of 20 mins.

Attach adapters. Hook up leak detector

Tuesday, May 09, 2017, 09:24: Leak found @ (G) line block

The (G) block line was disconnected and 'Blanked' off. The (G) line, block to feed through, was re-tested. No leak was found on blank off.

O-ring area cleaned. O-ring replaced. Blank removed. Block to Coil end reconnected. Leak highest when He sprayed directly on block.

Masking tape and/or 'putty' added block to block & confirm solder joint ok.

(E)(G) line removed. Block to block leak/sealing issue confirmed. (G) block leaks on the seat. (E) block ok. Tested externally. Achieves 1.0e-09 leak rate.

Wednesday, May 10, 2017, 09:22: Test stand (G) line from block to feed through has a separate leak. Cannot achieve below e-04 leak rate. Does not fully seal.

Removed heat shield to condition in evaporator 2.

FS#3 lines blanked off.

Wednesday, May 10, 2017, 14:40: Roughing

Wednesday, May 10, 2017, 15:05: Turbos on.

Wednesday, May 10, 2017, 15:10: Ion gauge on.

Disconnect Leak detector. Connect He to FS#3 (G) line.

Thursday, May 11, 2017, 07:44: RGA on.

Thursday, May 11, 2017, 08:23: Vacuum @ 1.85e-06T. He line pressurized to 50 PSI. Monitor RGA.

Thursday, May 11, 2017, 09:07: No response on RGA. Vacuum @ 1.85e-06T. Purge Helium.

Hook up dry system leak detector to leak check valve behind turbo.

Leak rate: 0.0e-09 atm-cc/sec on detector. T.P: 0.0e-04T.

Thursday, May 11, 2017, 09:18: Open check valve. Vacuum ok @ 1.76e-06T

Base leak rate: 2.5e-09 atm-cc/sec.

Thursday, May 11, 2017, 09:25: Open He & Pressurize to 50 PSI.

Thursday, May 11, 2017, 09:30: Base leak rate dropping slowly: 2.0e-09 atm-cc/sec. No leak detected. No response on RGA.

Thursday, May 11, 2017, 09:35: Base leak rate dropping slowly: 1.7e-09 atm-cc/sec. No leak detected. No response on RGA.

Thursday, May 11, 2017, 09:45: Base leak rate Ok: 1.7e-09 atm-cc/sec. No leak detected. No response on RGA. Close check valve. Purge line. Vent detector.

Leak detector on. Leak rate: 0.0e-09 atm-cc/sec on detector. T.P: 0.0e-04T.

Thursday, May 11, 2017, 13:24: Open check valve. Vacuum @ 1.41e-06T

Base leak rate: @.2.0e-09 atm-cc/sec.

Thursday, May 11, 2017, 13:30: Open He & Pressurize to 50 PSI.

Thursday, May 11, 2017, 13:37: Base leak rate dropping slowly: 1.0e-09 atm-cc/sec. No leak detected. No response on RGA.

Thursday, May 11, 2017, 13:40: Base leak rate Ok: 0.1e-09 atm-cc/sec. No leak detected. No response on RGA. Vent He.

Connect spray nozzle to He. Vacuum issue noticed on RGA: N & O. Check for leak on Chamber

Tuesday, May 16, 2017, 08:45: RGA off. Ion gauge off. Turbos off

Tuesday, May 16, 2017, 09:50: Venting

Coil loose (Remove lid, Tighten and place lid again)

Tuesday, May 16, 2017, 14:24: Roughing.

Tuesday, May 16, 2017, 14:45: Turbo pumps on.

Wednesday, May 17, 2017, 06:53: RGA on. Vacuum @ 7.40e-07T

Wednesday, May 17, 2017, 08:04: Open waterline FS#5. OK. Vacuum @ 6.93e-07T

Wednesday, May 17, 2017, 08:05: Open waterline FS#4. OK.

Wednesday, May 17, 2017, 08:06: Open waterline FS#2. OK.

Wednesday, May 17, 2017, 08:07: Open waterline FS#3. OK.

Wednesday, May 17, 2017, 08:10: Vacuum @ 6.93e-07T. No response on RGA

Wednesday, May 17, 2017, 08:26: RGA Error out. Restart RGA.

Wednesday, May 17, 2017, 08:35: Vacuum ok @ 6.87e-07T. RGA ok.

Sparking issues

Wednesday, May 17, 2017, 13:00:

BIAS / EZL / EE @ 35 / 13 / 1.5 kV .

Coil @ 50 A . Anode @ 200 V

RGA Fatal errors. unable to restart. Reboot in morning.

Wednesday, May 17, 2017, 14:25: Auto ramping TGHT / TBHT to 300 / 150 A @ 2/1 A per min.

Wednesday, May 17, 2017, 15:05: BIAS / EZL / EE @ 30 / 13 / 1.5 kV .

Thursday, May 18, 2017, 08:27: Auto ramping TGHT / TBHT to 400 / 200 A @ 2/1 A per min.

Thursday, May 18, 2017, 08:33: RGA on.

Thursday, May 18, 2017, 08:37: IV4 opened

Thursday, May 18, 2017, 08:42: Optics on/set

Monday, May 22, 2017, 07:55: RGA, Power/Sources off.

Monday, May 22, 2017, 07:59: Turbo pumps, Ion gauge off.

Monday, May 22, 2017, 09:03: Venting

Monday, May 22, 2017, 09:40: 6 block screws tightened.

Wednesday, May 17, 2017, 10:17: Sparking around 20 kV. Will need to vent to increase gap between water lines.

Turbos stopped.

Wednesday, May 17, 2017, 10:50: Reset IV4.

Wednesday, May 17, 2017, 10:59: Venting.

Wednesday, May 17, 2017, 11:42: Increased clearance to GND electrode.

Wednesday, May 17, 2017, 11:42: Roughing

Wednesday, May 17, 2017, 12:01: Turbos started

Monday, May 22, 2017, 09:41: Roughing.

Monday, May 22, 2017, 10:00: Turbo pumps started.

Tuesday, May 23, 2017, 07:45: Power/sources on.

Tuesday, May 23, 2017, 07:58: BIAS / EZL / EE @ 35 / 13 / 1.5 kV .

Tuesday, May 23, 2017, 08:19: Coil @ 50 A . Anode @ 200 V

Tuesday, May 23, 2017, 08:20: Auto ramping TGHT / TBHT to 580 / 270 A @ 2 A per min.

Tuesday, May 23, 2017, 10:22: IV4 opened.

Tuesday, May 23, 2017, 10:57: Increased ramping rate for TGHT to 4 A/min - AM

Tuesday, May 23, 2017, 19:05: Cooling down target for change to Anode bias tomorrow. - AM

Tuesday, May 23, 2017, 21:04: BIAS/EZL/EE off

Wednesday, May 24, 2017, 07:16: IV4 Closed.

Wednesday, May 24, 2017, 07:18: Power/Sources off.

Changed to Anode Bias.

Wednesday, May 24, 2017, 11:00: Coil @ 50 A . Anode @ 200 V

Wednesday, May 24, 2017, 11:02: Auto ramping TGHT / TBHT to 580 / 270 A @ 4 / 2 A per min.

Wednesday, May 24, 2017, 11:09: BIAS / EZL / EE @ 35 / 13 / 1.5 kV .

Tuesday, May 30, 2017, 07:02: Auto Cooling @ 2A/min

Thursday, June 01, 2017, 14:08: IV4 Closed. RGA off.

Thursday, June 01, 2017, 14:10: Ion gauge off. Turbos off.

Thursday, June 01, 2017, 16:51: Venting

Thursday, June 01, 2017, 21:16: Roughing.

 The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.

Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

Anders Mjos wrote:

The Test Stand has been configured for Anode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4523D REV 6.   Wednesday, May 24, 2017, 17:37: Anode current reduce to 285 A. Anode drain current limited  to a maximum of 300 A. This will be left overnight to see if there is an increase in anode drain current. as was seen today.

 The Test Stand has been  configured for Cathode bias. John Chow changed the power supply and the electrical connections have been wired according to ISK4563 REV 5.

Tuesday, June 06, 2017, 09:21: roughing.

Friday, June 09, 2017, 08:50: Ion gauge off. Turbo pumps off.

Friday, June 09, 2017, 10:46: Venting.

 Gas bottles for FEBIAD testing were exchanged yesterday around 1:30. One Neon & one Argon bottle were removed.

Two Neon bottles were added.

Friday, June 16, 2017, 11:22: roughing.

Friday, June 16, 2017, 14:28: Turbo pumps on

Friday, June 30, 2017, 10:37: Ion gauge, turbos off.

Friday, June 30, 2017, 13:01: Venting.

Attached is a recent list of Ta targets with their extracted ions peaks.

 Thursday, August 03, 2017, 17:00: Restarted TPs

 The Xantrex 10V 600 A power supply for the TBHT has been moved to ITE to replace the failed TGHT power supply