Broken LP-FEBIAD used to out gas.

Monday, July 13, 2020, 14:52: Roughing.

Monday, July 13, 2020, 15:29: Turbo pumps on. 

Monday, July 13, 2020, 15:34: Ion gauge on.

Tuesday, July 14, 2020, 06:44: Waterlines opened.

Tuesday, July 14, 2020, 06:47: Power / sources on.

Tuesday, July 14, 2020, 06:49: Auto-ramping TGHT to 580 A @ 2 A per min.

Tuesday, July 14, 2020, 14:15: Vacuum @ 2.59e-06T 

Friday, July 17, 2020, 10:54: Auto-cooling @ 1 A per min. 

Monday, July 20, 2020, 06:51: Power /  sources off.

Monday, July 20, 2020, 06:52: Ion gauge / Turbo pumps off.

Monday, July 20, 2020, 06:53: Re-attached N bottle / regulator for purging.

Monday, July 20, 2020, 06:57: Waterlines Purged. N bottle @ 1300 PSI.

PN: X3815-64000

SN: MY2005SA02

Description: IDP15 Scroll pump, Std.

Removed old Tri-Scroll, Check voltage setting. set to 115V.

Tuesday, August 18, 2020, 09:57: Installed & check. Roughing line to PV1

Tuesday, August 18, 2020, 10:04: Connection ok. Await chamber close after.

Tuesday, August 18, 2020, 13:30: Disengage shipping locks*

Wednesday, August 19, 2020, 08:52: Purging all lines, except FS#5, It was already purged / closed.

Wednesday, August 19, 2020, 11:24: Vacuum @ 1.76e-06T.

Wednesday, August 19, 2020, 11:29: FS#2 opened. Observable vacuum spike noted. vacuum @ 2.2e-06T. Purge & Close.

Wednesday, August 19, 2020, 11:34: Vacuum @  1.76e-06T.

Wednesday, August 19, 2020, 11:36: FS#3 opened. Vacuum  @ 1.74e-06T.

Wednesday, August 19, 2020, 11:44: Vacuum @  1.67e-06T.

Wednesday, August 19, 2020, 11:47: FS#4 opened. Vacuum @ 1.65e-06T

Wednesday, August 19, 2020, 11:51: No spike observed

Wednesday, August 19, 2020, 11:52: Turbo Pumps off. To vent for Leak check w/ LD & He.

Thursday, August 20, 2020, 11:26: Blanked off & connected feed through (C) & (D) individually. Both to 120 PSI individually w/ He. No leak detected. 

Thursday, August 20, 2020, 11:35: Roughing.

Thursday, August 20, 2020, 13:00: TP1B started.

Thursday, August 20, 2020, 13:09: Before opening back valve w/ LD:

LD: 0.0e-09 atm-cc/sec

Thursday, August 20, 2020, 13:10: Opened valve.

LD: 2.2e-07 atm-cc/sec & Dropping. Likely left over from the lines initial tests. Vacuum @ 3.2e-04T & dropping.

Thursday, August 20, 2020, 13:17: 120 PSI of He on line (D) TGHT left side.

 LD: 1.3e-07 atm-cc/sec & Dropping. Vacuum @ 2.09e-04T & dropping.

Thursday, August 20, 2020, 13:27: LD: 1.0e-07 atm-cc/sec & Dropping. Vacuum @ 1.27e-04T & dropping. Disconnect He up top.

Thursday, August 20, 2020, 13:40: LD: 1.2e-07 atm-cc/sec. Vacuum @ 9.95e-05T & dropping. Connected He up top to line (C) TGHT right side.

Thursday, August 20, 2020, 13:43: 120 PSI on line. Spike occurring on TSG CG1A & TSG:CG1 B.

Thursday, August 20, 2020, 13:53: LD: 2.0e-07 atm-cc/sec. Vacuum @ 7.57e-05T & dropping. Gradual increase on leak rate for line (C)

Tuesday, August 25, 2020, 07:07: Beam line side of the TS tripped? Open BV6 & BV2.

Tuesday, August 25, 2020, 07:15: Beam line side TP6 & TP2 on.

Tuesday, August 25, 2020, 07:16: Venting Chamber side

Tuesday, August 25, 2020, 15:39: Aluminum water loop block installed. Roughing.

Tuesday, August 25, 2020, 19:11: Turbo pumps TP1A & TP1B on.

Tuesday, August 25, 2020, 19:13: TP1A off to avoid a trip.

Tuesday, August 25, 2020, 19:50: TP1A on. BV1A Bypass on 

Tuesday, August 25, 2020, 19:58: Ion gauge on. 

Wednesday, August 26, 2020, 06:15: BV1A Bypass off.

Multiple checks done on right TGHT (C) in the cold lab. Inconclusive leak detection

Reconnect He & LD to TS. TGHT (C) with Loop block in place.

Thursday, August 27, 2020, 08:09: Vacuum @ 1.49e-06T

Thursday, August 27, 2020, 08:11: Before opening back valve w/ LD:

LD: 0.0e-09 atm-cc/sec

Thursday, August 27, 2020, 08:13: Opened valve behind TP1B.

Thursday, August 27, 2020, 08:16:

LD: 0.0e-09 atm-cc/sec. Vacuum @ 1.49e-06T.

Thursday, August 27, 2020, 08:18: 120 PSI of He on line (C) TGHT Right side w/ loop block.

Thursday, August 27, 2020, 08:21: LD:  0.0e-09 atm-cc/sec. Vacuum @ 1.49e-06T.

Thursday, August 27, 2020, 08:31: Increase /  bump noted on LD

Thursday, August 27, 2020, 08:34: LD: 1.4e-08 atm-cc/sec. Slowly increasing. Vacuum @ 1.49e-06T.

Thursday, August 27, 2020, 08:39: LD: 4.0e-08 atm-cc/sec. Slowly increasing. Vacuum @ 1.49e-06T.

Thursday, August 27, 2020, 08:42: Closed Valve behind TP1B. Purge He.

Thursday, August 27, 2020, 10:02: Ion gauge off. Turbo pumps off.

Thursday, August 27, 2020, 11:04: Venting:

Removed loop block. Polished/Cleaned seat surface to remove 2 scratches. Applied no o-rings w/ vacuum grease. Pressurized with 120 PSI on the line w/ sniffer. No leak detected.

Thursday, August 27, 2020, 13:44: Roughing.

Thursday, August 27, 2020, 13:46: BV1A opened.

Thursday, August 27, 2020, 17:39: TP1B on.

Thursday, August 27, 2020, 17:52: TP1A on 

Tuesday, September 01, 2020, 07:44: Vacuum @ 8.23e-07T

Before opening back valve w/ LD: 0.0e-09 atm-cc/sec

Tuesday, September 01, 2020, 07:46: Opened valve behind TP1B.

Tuesday, September 01, 2020, 07:57: LD: 0.0e-09 atm-cc/sec. Vacuum @ 8.23e-07T.

Tuesday, September 01, 2020, 07:59: 120 PSI of He on line (C) TGHT Right side w/ loop block.

Tuesday, September 01, 2020, 08:20: LD:  0.0e-09 atm-cc/sec. Vacuum @ 8.16e-07T.

Tuesday, September 01, 2020, 08:21: Random Spike? Vacuum remained the same, however the LD jumped from 0.0e-09 atm-cc/sec to the mid-e-08 atm-cc/sec range. Literally for a couple seconds, then back to 0.0e-09 atm-cc/sec.

Odd, couple more random spikes.

Tuesday, September 01, 2020, 08:24: Closed valve behind TP1B to see if the spikes continue.

Tuesday, September 01, 2020, 08:34: Opened the TP1B valve. Immediate spike from 0.0e-09 atm-cc/sec to 2.2e-08 & 7.9e-08 atm-cc/sec noted.

Tuesday, September 01, 2020, 08:36: Close the valve behind TP1B. LD off.

Tuesday, September 01, 2020, 14:00:

New tubing installed.

Blue on FS#4 loop (A)(B)

Yellow on FS#2 Loop (C)(D)

Vacuum @ 8.30e-07T

Tuesday, September 01, 2020, 14:04: Opened FS#4 Vacuum stable @ 8.30e-07T.

Tuesday, September 01, 2020, 14:06: Opened FS#2 Vacuum stable @ 8.30e-07T.

Tuesday, September 01, 2020, 14:36: Closed FS#2 but not purged.. Vacuum stable @ 8.23e-07T.

Wednesday, September 02, 2020, 07:26: Ion gauge & Turbo pumps off. 

Wednesday, September 02, 2020, 08:50: Venting.

Install right TGHT (C)(D) line. Install FEBIAD. Clean out odd buildup / powder beneath optics tray.

Wednesday, September 02, 2020, 10:48: Roughing.

Wednesday, September 02, 2020, 11:19: TP1B on.

Thursday, September 03, 2020, 11:00: Vacuum @ 1.05e-06T. Waterlines are to be opened.

Thursday, September 03, 2020, 11:03: Opened FS#2. Vacuum Stable @ 1.03e-06T.

Thursday, September 03, 2020, 11:05: Opened FS#3. Vacuum Stable @ 1.03e-06T.

Thursday, September 03, 2020, 11:06: Opened FS#4. Vacuum Stable @ 1.03e-06T.

Thursday, September 03, 2020, 11:08: Opened FS#5. Vacuum Stable @ 1.03e-06T.

Thursday, September 03, 2020, 11:23: Vacuum remains stable @ 1.03e-06T.. PS on. Auto-ramp TGHT / TBHT to 350 / 150 A @ 2 A per min.

Wednesday, December 02, 2020, 08:31 :

Added copper wire connection to multipin screw terminals in HV cage to make sure they are grounded.

Attached grounding rod to back of HV cage. Not ideal, but couldn't find a better place without making a extension to the cable. Will see what John Chow says. EDIT: John says it is ok for the tests, not for permanent.

Vented test stand to swap window positions. Swapped rightmost window on the door with two windows with window on the door with only one window. Replaced one oring, that on the single window. Cleaned the inside surfaces of both windows with methanol before re-installing. Roughing down just to make sure there are no major issues, at 0.313T and falling. EDIT: down to 0.015T overnight.

All breakers on HV cage panel are OFF.

Thursday, December 03, 2020, 15:54 :

Got sign off from John Chow to run the system, though the nylon insulator was not ready when he came by. But we went over everything together.

Installed blue nylon insulator with all vacuum surfaces cleaned at least with methanol. No NPT fitting or tube installed, just testing service cap.

Thursday, December 03, 2020, 17:31 :

Tested voltage on the blue nylon insulator up to 75kV, left it at 75 for ~30mins. No sparking, no current drawn except occasionally when changing voltage and only ~1uA then.

Cleaned (but not very well...) the NPT fitting, copper tube, alligator clip and section of copper wire and installed these in the vacuum chamber. Will pump down overnight for testing tomorrow.

See attached photos for insulator setup and wire inside vacuum chamber.

Friday, December 04, 2020, 08:52 :

Test stand roughed down to 29mT overnight. Started turbos for testing later.

The copper tubes to be used in the TM3 test piece may have flux inside them from soldering the end caps on. There are holes along the length for outgassing, and we will try to bake them out in the test stand before installing them. There is still a dummy bake out target installed there, see the photo for how the tubes are loaded in. TGHT ramping started around 3pm.

I had to remove the grounding connections from the TGHT feedthroughs for this, so I redid them such that the tube is attached to the EZL. This target has no tube, so the connection between the tube and target is just through the 100Ohm resistor.

We must re-do the grounding before proceeding with HV tests.

Wednesday, December 09, 2020, 19:38 :

Target heater ramp down started. See attachment for vacuum progression during bake out.

Test piece installed with Sam, Aaron and Alexander. Ended up shimming the support stand (middle foot) since it seemed to be bowing a bit and distorting the gap between the containment box stand-in piece and the service tray piece. We should measure the gaps when testing is done with the same configuration. Installation was not too hard, installed the whole thing as one piece. Had to remove the middle foot on the long side to get it through the door but otherwise no problems.

Test stand re-wired for HV testing. Wire hooked up to test piece by pinching between two tubes. Verified GND and HV continuity.

Tuesday, December 15, 2020, 11:15

Vacuum at 1.0e-6 Torr. Turned bias power supply on, starting HV ramp at 500 V increments, increasing every 30-50 seconds seconds or so.

Tuesday, December 15, 2020, 12:47

Reached 50 kV. Not a single dip in voltage, significant current bump, or change in vacuum up to this point. Will hold for 10 minutes before continuing.

Tuesday, December 15, 2020, 12:57

Continuing voltage ramp. Decreasing increments to 250 V as this is uncharted territory, and that rate of increase seemed safe yesterday. Will also hold at each voltage for about 2 minutes after no signs of activity.

Tuesday, December 15, 2020, 13:04

Small dip in voltage and wiggle in current at 50.75 kV, no change in vacuum.

Spark at 51.25 kV with change in vacuum; reduced voltage temporarily. Did the same at 51.75 kV. Did the same at 52 kV, but let it sort itself out this time since it didn't seem too violent.

Actual spark at 52.25 kV with big voltage drop, and I saw it happen. On the vacuum gap side, somewhere in the flat plane and close to the middle. Another spark after about 3 minutes of holding. Just missed recording it but I saw it on the feed of the GoPro; maybe in a similar location as the previous. Another 1 minute later, didn't see it this time. The last two had no effect on vacuum.

Tuesday, December 15, 2020, 13:31

5 minutes since last spark. Raising voltage again, this time recording with GoPro. Spark captured at 53 kV. No change in vacuum... until a minute later.

Tuesday, December 15, 2020, 14:46

55 kV. Each time voltage is raised, it takes a couple seconds to reach a stable voltage. During this time the current limit of 0.005 mA seems to be drawn. Will reduce current limit to 0.001 mA to see effect. Dumped StripTool data at 55.25 kV.

Recorded spark at 56 kV. Voltage took longer to recover as a result of the reduced current limit.

58.5 kV. Effect of reducing current limit seems to make it take longer to reach a stable voltage. I think this is a good thing as it should smooth out the conditioning. Sparked here twice, reduced voltage for a bit before bringing back up again.

Tuesday, December 15, 2020, 16:23

60 kV. Sparked twice. Carla observed some: a couple small ones on the face of the insulator as the voltage was recovering from the first spark followed by a large one that went all the way across. Only the larger events seem to be captured by the GoPro.

Tuesday, December 15, 2020, 16:47

Finished holding at 60 kV to 20 minutes with no sparks other than the other two previously mentioned. Resuming voltage increases.

Tuesday, December 15, 2020, 17:02

61.5 kV. Small spark but not full breakdown, then a large spark that cut voltage to 0 V. Voltage dropped relatively slowly to about 48 kV. Lowered the voltage limit to 44 kV. During this entire time, 0.001 mA of current was being drawn. Carla started raising voltage while increasing the current limit as needed to reach the set voltage.

Tuesday, December 15, 2020, 17:44

Back at 60 kV and holding. Drawing 0.005 mA to 0.006 mA though. This is different from earlier when it was holding 60 kV with no current draw.

Tuesday, December 15, 2020, 19:02

Held 60 kV for an hour with current staying constant around 0.005 mA. Ramped down (first ramped down current to see effect) and then ramped down voltage. Shut off power supply.

Wednesday, December 16, 2020, 10:30 (Carla) :

Started ramping up about 45 mins ago, now at 50kV with no issues. No sparking, occasional current draw to get to the next voltage step. Test piece is no longer drawing any current, as opposed to yesterday when it was drawing around 4uA at this point. Trace left on insulator must have partially evaporated in the vacuum overnight.

Wednesday, December 16, 2020, 10:34 :

Starting to draw some current at 50.5kV. Drawing 4uA at 55kV.

Wednesday, December 16, 2020, 10:51 :

Back up to 60kV, no sparks so far and no issues, though it is still drawing 5uA of current, as it was yesterday.

Wednesday, December 16, 2020, 12:28 (Alexander)

No sparks at 60 kV for 1.5 hours. Starting voltage increases again at 250 V increments. Currently limiting current to 6 uA. Current draw is 4 uA.

Wednesday, December 16, 2020, 13:20

63 kV. Appears current limited, increased current limit to 7 uA. First spark was at 62.75 kV.

63.25 kV. Seems current limited again but eventually reached a stable voltage after a minute. Increased current limit to 8 uA for next voltage increase.

63.5 kV. Spark.

63.75 kV. Unstable trying to reach voltage, appears current limited. Small spark followed by a big one on the rise of the previous. Second one activated something pneumatic nearby. Reduced voltage by 250 V. Looked at vacuum system but nothing abnormal.

63.5 kV. Spark, not recorded on GoPro. Stable after 5 minutes. Continuing.

63.75 kV. No longer current limited and reached voltage stably. Dumped data.

Wednesday, December 16, 2020, 14:02

64.5 kV. May be current limited again, took over a minute to reach stable voltage.

Note: None of the sparks recorded today so far have produced a response in the vacuum, which is holding steady at 1e-6 Torr.

65 kV. Smooth transition to it. Drawing 5 uA.

65.25 kV. Spark after voltage instability and current draw at 8 uA limit. Moved the Faraday cup, which made a sound. This is the sound I heard earlier. Lower current draw after the spark, back at 5 uA.

Wednesday, December 16, 2020, 15:20

Stable at 65.25 for an hour, no sparks.

Spark at 66 kV. Current limited and unstable voltage for about 2 minutes afterwards, then stable with current back to 6 uA.

Spark at 66.5 kV after some voltage instability and current limiting. Afterwards current and voltage returned to stability.

67 kV, two sparks, one right after the other. The second produced a bump in the vacuum. Reduced voltage. Brought back up easily; current stable at 5 uA.

67.25 kV. Spark. No instability preceding it for a good 20 seconds.

67.5 kV. Spark. Instability before, none after.

Wednesday, December 16, 2020, 16:08

68 kV. Spark. Instability before, none after. Vacuum dropped about 20 seconds after recovering. Current also dropped to 4 mA, at about the same time the vacuum dropped. Dropping current limit to 7 uA.

68.25 kV. Vacuum jumped back up to earlier values and then an eventual spark after some instability. Returned to stability after spark. Current now at 5 uA.

68.75 kV. Spark.

69 kV. Carla went to look inside. Saw some small sparks towards the back between the HV sheath and GND sheath in the small gap side. Very little registered in EPICS, though. Just a couple jumps in current and small dips in voltage. Not visible in GoPro footage.

Wednesday, December 16, 2020, 16:38

69.25 kV. Two sparks. Stable after second. Third spark. Reviewed GoPro footage because third spark was suspicious. Appears on video but not near or on the prototype. Could have been the wire. Dumped data.

69.75 kV. Some instability paired with a change in vacuum for the same duration.

70 kV. Carla went to look. Nothing visible on the StripTool but Carla said she saw small sparks towards the back. Going to leave here for 20 minutes before raising again.

Wednesday, December 16, 2020, 17:12

Held for 20 minutes at 70 kV with no action. Starting voltage increases again.

70.25 kV. Two and a half minutes of voltage instability, raised vacuum, and limited current. All of them stopped and started at the same time. Seems like conditioning to me.

70.5 kV. Carla saw two very faint sparks towards the back on the small gap side. Little appeared in EPICS. Spark followed maybe a minute and a half later. 2nd spark four minutes after that. Before and between those sparks the current was generally at 5 uA. About a minute after the 2nd, the current dropped to 4 uA.

70.75 kV. Short conditioning (response from all 3 monitors) period of about 10 seconds.

71 kV. 2 sparks one minute apart with some conditioning in between and after.

71.5 kV. Spark followed by 2 minutes of conditioning.

71.75 kV. One minute of conditioning.

Wednesday, December 16, 2020, 18:06

72.25 kV. Spark followed by a minute and a half of conditioning.

72.75. About a minute of conditioning.

73 kV. Instant spark followed by about a minute of conditioning.

73.25 kV. 30 seconds of conditioning then a spark. 1 minute of conditioning, then another spark, and conditioning done right after. Second one sounded like it activated the Faraday cup.

73.75 kV. Sporadic and weak conditioning? A few blips in voltage and current over about a minute and a half.

74 kV. Similar to previous but even less significant.

74.5 kV. Two minutes of conditioning.

Wednesday, December 16, 2020, 18:52

75 kV. 30 seconds of conditioning. Spark. 2.5 minutes of conditioning. 2nd spark. 10 seconds. 3rd spark; lowering voltage by 250 V for stability to capture footage of previous 3 sparks. Stable here for 5 minutes.

Wednesday, December 16, 2020, 19:01

75 kV. Nothing happening. Gonna leave for 30 minutes.

Wednesday, December 16, 2020, 19:31

75 kV for 30 minutes. No sparks or any other anomalies. Vacuum has been around 9.5e-7 Torr. Current hovering around 5 uA. Starting voltage ramp down.

Wednesday, December 16, 2020, 19:43

Ramped down. Nothing interesting. Turned power supply off in EPICS. Still on physically such that ramp up tomorrow can start remotely. Dumped data.

Ramping up to 75kV. Started drawing current at 63.5kV this time.

Now at 75kV, drawing 5uA of current. Ramp up easy.

Thursday, December 17, 2020, 13:02

Been at 75 kV since about 8:45. A single spark at 11:58.

Thursday, December 17, 2020, 18:10

75 kV. No sparks since that last one 6 hours ago. Current has been slowly decreasing over time, now sitting around 2 uA. Was about 5 uA around the time of the spark. Starting ramp down. Dumped data.

Shutting down the ISAC TS for the planned outage on Dec 22.

Monday, December 21, 2020, 07:50: Ion gauges & turbo pumps off.

Monday, December 21, 2020, 07:51: Confirm wire scanner shutoff.

Monday, December 21, 2020, 07:55: Waterlines purged.

Monday, December 21, 2020, 07:57: Backing valves TMS:BV6 & TMS:BV2 off. PV1 & PV2 off. Roughing pumps off.

Restarting TS after holidays & planned power outage.

Monday, January 04, 2021, 08:17: All epics controls in a 'white out' state.

Monday, January 04, 2021, 08:20: Rebooted PLC / IOC. Controls returned.

Monday, January 04, 2021, 08:22: Strip tools started / epics response ok.

Monday, January 04, 2021, 08:23: Switch on TMS:RP2 & TSG:RP1

Monday, January 04, 2021, 08:24: Open PV1 & PV2.

Monday, January 04, 2021, 08:26: Optics, steering, and archivers still in a non-responsive / 'white-out' state.

IOC rebooted on January 6. Controls returned to normal.

I have rewired the test stand (service cap wiring only, not power supply wiring) to anode bias mode as shown in the diagram. This was not how it was wired before, there are several things I have removed that appear to be newer additions. I also removed the burned cable between TBHT(-) and COIL(-), and between the multipin feedthrough and ground (probably related to the other burned cable).

I tried to measure the resistances across the feedthroughs (as opposed to across the resistors themselves) but they all seem wrong. I get 27Ohms across the TGHT and TBHT circuits instead of 100Ohms. Between the TGHT and TBHT I get 100Ohms as expected. Across the coil circuit I get 6Ohms instead of 100Ohms. Probably only the 6Ohms really needs to be fixed, but if the resistors are damaged, then the varistors might be as well.

Thursday, February 18, 2021, 10:45: TPS:Q3 & the TSB CBC CANBUS controllers had failed yesterday, as well as a cable was incorrectly seated. This was fixed this morning.

Before

After.

Tuesday, March 02, 2021, 11:40: Fully reset

TGHT / TBHT set to 20 A ok. Anode w/ 30 V. ok.

Tuesday, March 02, 2021, 11:42: 10 A on coil. Increment was at 75 A. Set back to 1 A.

Tuesday, March 02, 2021, 11:44: BIAS / EE / EZL @ 1 / 0.5 / 1 kV.

Wednesday, March 10, 2021, 10:48  : Venting beamline section only for installation of emittance meters.

Monday, March 15, 2021, 16:09 Target and ion source ramped to 400A/330A this afternoon

Monday, March 15, 2021, 18:53 : Tune through to final RPMs but not optimized. 5e-8 on FC0. Will turn down target and ion source values to TGHT/TBHT 350/250 until tomorrow. BIAS/EZL/COIL/ANODE all off.

Tuesday, March 16, 2021, 15:04  Mike is finished with emittance meter controls so ramping everything back up and trying to get beam through.

Thursday, March 18, 2021, 18:06 : Vacuum has been rising slowly over the past 20hrs from 9.3e-7 to 9.9e-7. Everything has been up since Tuesday. No beam through emittance meter, though beam can be found on the regular test stand emittance meter. Just discovered that both voltage plates are plugged into positive power supplies so waiting for a controls fix on that then will retry.

Friday, March 19, 2021, 17:08 : Finally success. New emittance meter shows same results as the standard test stand emittance rig. Will continue testing new controls next week

Lot's of water visually present in the chamber.

Wednesday, March 24, 2021, 13:17: Water lines purged.

Vent & wipe out the water inside the chamber. Setup a fan to aid in drying. Manually purge the water from the RP1 Scroll pump through the exhaust.

Thursday, March 25, 2021, 08:06: Gradually open each line to check the water blocks & fittings for a visual leak. Open the ballast plug on RP1, as well as manually purge the water from the RP1 Scroll pump through the exhaust again.

Thursday, March 25, 2021, 08:34: Leak found on FS#3 - Left Coil return (G) water block.

Thursday, March 25, 2021, 09:15: FEBIAD assembly & L-Coil line removed.

Thursday, March 25, 2021, 11:38: Re-connect RP1 to the exhaust port & re-insert the ballast plug.

Thursday, March 25, 2021, 11:40: RP1 Ok. CG1A & CG1 B around 0.048T & dropping. Chamber still open.

Indium gasket installed on G, C-Seal on E.

Friday, March 26, 2021, 08:21: Roughing.

Friday, March 26, 2021, 09:08: Vacuum @ 2.001 T. Opened FS#3 waterline. Quick test.

Friday, March 26, 2021, 09:11: Vacuum @ 1.901 T. No observable spike on CG1.

Friday, March 26, 2021, 09:12: Close FS#3 & purge

Friday, March 26, 2021, 09:27: Quickly open ballast plug.

Friday, March 26, 2021, 09:30: Re-insert plug.

Friday, March 26, 2021, 09:38: CG1 @ 2.253 T.

Friday, March 26, 2021, 09:41: Close BV1A & B.

Friday, March 26, 2021, 09:45: Manually purge water from the RP1 Scroll pump through the exhaust.

Friday, March 26, 2021, 09:51: Re-open BV1A & B.

Friday, March 26, 2021, 10:17: Close BV1A & B. Manually purge water from the RP1 Scroll pump through the exhaust.

Friday, March 26, 2021, 10:26: Close the exhaust & give the pump time to recover.

Friday, March 26, 2021, 10:36: Briefly vent the chamber to 30 T. Re-open BV1A & B.

Friday, March 26, 2021, 11:20: Vacuum @ 1.706T. Open FS#3. Allow to fill with water, then close off. No observable spike on CG1.

Friday, March 26, 2021, 11:25: Opened ballast cap. Close BV1A & B.

Friday, March 26, 2021, 11:26: Close ballast.

Friday, March 26, 2021, 11:29: Briefly vent the chamber to 30 T. Re-open BV1A & B.

Friday, March 26, 2021, 12:11: Vacuum @ 2.75T. Close BV1A & B. Vent chamber to setup a fan.

Monday, March 29, 2021, 09:00: LD & He attached. LD#2 as supplied via Vacuum group.

Monday, March 29, 2021, 09:01: Sniffer set. Leak Rate @ 2.0E-07 to 2.3E-07 atm-cc/sec

Monday, March 29, 2021, 09:03: Pressurize (E)(G) to 75 PSI.

Monday, March 29, 2021, 09:05: No major spike seen on LD.

Monday, March 29, 2021, 09:06: Pressurize (E)(G) to 100 PSI.

Monday, March 29, 2021, 09:09: No major spike seen on LD. Purge He from the lines.

Monday, March 29, 2021, 09:12: Roughing.

Monday, March 29, 2021, 09:22: Opened ballast cap to release water vapour while roughing.

Monday, March 29, 2021, 09:42: Closed the ballast cap. Purge cycle RP1 on & off for the next hour or so.

To purge cycle RP1 for water vapour. Close BV1A & B. Disconnect exhaust line from RP1 & open the upper ballast. Close PV1, Vent with TSG:VV1A till the line reaches atmosphere with dry nitrogen.

Close VV1 & open PV1. Water should spew out of the exhaust. Rough the backing lines down. Open BV1A & B to rough then chamber. Repeat leaving the upper ballast open.

Monday, March 29, 2021, 14:00: Purge RP1. Close upper ballast, re-connect exhaust.

Monday, March 29, 2021, 14:36: TP1B on.

Monday, March 29, 2021, 19:47: TP1A on. 

Monday, March 29, 2021, 19:55: IG1 on. 

Tuesday, March 30, 2021, 08:52: Vacuum @ 4.48e-06T.

LD to TP1B base @ 1.4E-08 to 1.9E-08 atm-cc/sec.

Tuesday, March 30, 2021, 08:58: He @ 55 PSI

Tuesday, March 30, 2021, 09:04: LD to TP1B base @ 2.4E-08 atm-cc/sec.

Tuesday, March 30, 2021, 09:12: Reconnect FS#3 to DI.

Tuesday, March 30, 2021, 09:14: Opened FS#3 w/ DI

Tuesday, March 30, 2021, 09:20: Vacuum @ 4.40e-06T.

Tuesday, March 30, 2021, 09:33: FS#2, 4, & 5 open. Vacuum ok @ 4.40e-06T

Tuesday, March 30, 2021, 09:34: Power/sources on.

Tuesday, March 30, 2021, 09:37: Auto-ramping TGHT / TBHT to 200 / 100 A @ 2 A per min.

Tuesday, March 30, 2021, 12:12: Auto-ramping TGHT / TBHT to 350 / 125 A @ 2 A per min. 

Tuesday, March 30, 2021, 13:50: Vacuum @ 4.66e-06T. Auto-ramping TGHT / TBHT to 450 / 150 A @ 2 A per min.

Tuesday, March 30, 2021, 21:59: Vacuum @ 5.01e-06T. TGHT / TBHT @ 393 / 150 A. Reset Auto-ramping TGHT / TBHT to 550 / 200 A @ 2 A per min.

Wednesday, March 31, 2021, 11:46: IV4 opened. Optics & HV power switched on.

Wednesday, March 31, 2021, 11:52: HV check ok. Optics reset. BIAS / EE / EZL @ 1 / 0.1 / 1 kV. Coil @ 4 A. Anode @ 100 V

Wednesday, March 31, 2021, 11:54: Optics remain on. HV & coil back to 0. Ready to run once the Vacuum returns to a reasonable level. Vacuum @ 5.45e-06T.

Wednesday, March 31, 2021, 15:05: Auto-ramping TGHT / TBHT to 580 / 270 A @ 2 A per min.

Vented beamline and removed ARIEL emittance meter. In the process of swapping components, beamline left vented until Monday when we will finish the job.