Check achievable vacuum. Watch for spikes on RGA. Silver bolts removed from the chamber. Vented steel screws in.

Tuesday, December 12, 2017, 08:23: Doors open from previous test. (Open for 7 minutes)

Tuesday, December 12, 2017, 08:30: Doors closed. Roughing.

Tuesday, December 12, 2017, 08:50: Turbo pumps on.

Tuesday, December 12, 2017, 08:56: Ion gauge on.

Wednesday, December 13, 2017, 06:46: Check. Vacuum @ 5.44e-07T. RGA Error.

Wednesday, December 13, 2017, 06:49: RGA restarted.

Wednesday, December 13, 2017, 06:52: Water lines opened. Vacuum @ 5.44e-07T

Wednesday, December 13, 2017, 06:54: Power on.

Wednesday, December 13, 2017, 06:56: Auto ramping TGHT / TBHT to 580 / 200 A @ 2A per min.

Friday, December 15, 2017, 13:37: Auto-cooling @ 2A per min

Monday, December 18, 2017, 08:15: Power/source off.

Wednesday, December 20, 2017, 09:07: RGA off.

Wednesday, December 20, 2017, 09:08: Both Ion gauges and all 4 turbo pumps off.

Power/sources already off. The water cooling is currently left on.

Wednesday, December 20, 2017, 09:07: RGA off.

Wednesday, December 20, 2017, 09:08: Both Ion gauges and all 4 turbo pumps off.

Wednesday, December 20, 2017, 11:21: Valves closed. Roughing pumps off.

Wednesday, December 20, 2017, 11:22: RGA shut off completely.

Powered down vacuum gauge and turbo pump controllers

Tuesday, January 02, 2018

Cycled power for TCSIOC and PLCIOC

TP2 and TP6 started

TP1B does not start. TP1B controller does not start up correctly - controller will have to be replaced. E-fault submitted (10739).

Controller for PS for Q1,6 was switching constantly. Unplugged and plugged back in resolved the problem

TP1A started

(Aaron Schmidt)

Wednesday, January 03, 2018, 08:15:  TSG:TP1B Still non-responsive.

Wednesday, January 03, 2018, 08:20: Power/sources on. Add Voltage/Amp and check power supplies.

BIAS - 300V Reads 290V - OK

EE - 300V Reads 298V - OK

EZL - 300V Reads 293 V - OK

CB1 - 10V Reads 10V - OK

VCB1 - 10V Reads 10V - OK

CBC (both)  - 10V Reads 9V - OK

TBHT - 10A Reads 9.9A (009 direct off PS) - OK

TGHT - 10A Reads 9.8A (007 direct off PS) - OK

Optics Check:

Magnet ok - Some optics start, some do not respond. Submit fault report for communications issues.

Fault Report submitted - 10742

Thursday, January 04, 2018, 14:38:

Kyle and Dave were able to get all the canbus optics for ISAC test stand re-configured except one device: TMS:Q2

"We investigated and it looks like the controller board for the TMS:Q2 supply is toast. Unfortunately these boards are a very old style so we don't have a surplus of replacements on hand. Our electronics shop did have some spares but the spares are not ready for use and need to have a few components soldered on. " - Kyle

The repaired controller board should be ready for next week.

Wednesday, January 10, 2018, 13:22: TS optics all fixed. Turbo pump TP1B is still out.

Computer, TS, epics, restarted. Power checks

Monday, January 22, 2018, 09:00: ISAC PLC TLCIOC Restarted. 

Turbo pumps restarted.

Monday, January 22, 2018, 09:26: New controller for TSG:TP1B brought in.

(Connect) Global reset. Resart Turbo pumps.

Monday, January 22, 2018, 09:40: Both turbo pumps @ speed.

Vacuum controls ok

Sources ok

Optics -  Issues. Some restart, others do not.

Friday, January 26, 2018, 11:08: New Helium tank installed inside the Test Stand.

-The 'Full' tag remains. The He tank was not opened.

-The old tank was placed beside the Test Stand beneath/beside the power switch.

Friday, January 26, 2018, 14:00: BIAS/EZL/EE ramp up.

Friday, January 26, 2018, 14:06: BIAS/EZL/EE @ 30/13/1.5 kV.

Friday, January 26, 2018, 14:09: BIAS/EZL/EE @ 35/13/1.5 kV.

Spark at BIAS 30 kV and 40kV

Friday, January 26, 2018, 14:12: BIAS/EZL/EE @ 40/13/1.5 kV.

Friday, January 26, 2018, 14:15: BIAS/EZL/EE @ 45/13/1.5 kV.

Audible sparks, but none showing on the strip tool.

Friday, January 26, 2018, 14:19: BIAS/EZL/EE @ 45/19/1.5 kV.

Friday, January 26, 2018, 14:22: BIAS/EZL/EE @ 47/22/1.5 kV. Sparks @ 47000 to 47250 V.

Sparks observed on EE feed through in cage.

Friday, January 26, 2018, 14:27: BIAS/EZL/EE @ 50/22/1.7 kV.

Friday, January 26, 2018, 14:39: BIAS/EZL/EE @ 55/23.5/1.8 kV.

Bias controls 55 kV Actual @ 50 kV.

Friday, January 26, 2018, 14:44: Spark free 5 min.

Friday, January 26, 2018, 14:49: Spark free 10 min.

HV test 2 cancelled.  9:38: BIAS/EZL/EE @ 30/13/1.5 kV

Monday, January 29, 2018, 09:40 (Roughly) Power went out completely

Monday, January 29, 2018, 10:00: Power up TS

Monday, January 29, 2018, 10:07:Turbos on.

Monday, January 29, 2018, 10:11: Ion gauge on Vacuum @ 3.3e-06T

Monday, January 29, 2018, 11:47; Power cycled. PLC and Canbus reset/cfg.

Monday, January 29, 2018, 11:54: Optics & Sources ok/reset.

Monday, January 29, 2018, 13:27: BIAS/EZL/EE @ 30 / 13 / 1.5 kV.

Monday, January 29, 2018, 13:30: BIAS/EZL/EE @ 40 / 17 / 2 kV.

Monday, January 29, 2018, 13:33: BIAS/EZL/EE @ 45 / 19.5 / 2.25 kV.

Monday, January 29, 2018, 13:36: BIAS/EZL/EE @ 50 / 21.5 / 2.5 kV.

Monday, January 29, 2018, 13:40: BIAS/EZL/EE @ 55 / 23.8 / 2.75 kV.

Monday, January 29, 2018, 13:43: BIAS/EZL/EE @ 60 / 26 / 3 kV.

SPARKS*

Monday, January 29, 2018, 13:48: BIAS/EZL/EE @ 55 / 23.8 / 2.75 kV.

Monday, January 29, 2018, 13:51: BIAS/EZL/EE @ 57.5 / 26 / 2.9 kV.

Sparks

Monday, January 29, 2018, 13:57: BIAS/EZL/EE @ 58 / 27 / 2.95 kV.

Monday, January 29, 2018, 14:03: Holding.

Monday, January 29, 2018, 14:07: BIAS/EZL/EE @ 59 / 28 / 3.1 kV.

Monday, January 29, 2018, 14:14: Spark*

Monday, January 29, 2018, 14:45: Holding

Monday, January 29, 2018, 14:56: BIAS/EZL/EE @ 0. Test Complete

Tuesday, January 30, 2018, 06:50: BIAS / EZL / EE @ 30 / 13 / 1.5

Tuesday, January 30, 2018, 06:52: Auto ramping TGHT / TBHT to 580 / 200 A @ 2A per min.

Tuesday, January 30, 2018, 06:58: Optics on / set

Tuesday, January 30, 2018, 06:59: IV4 opened.

RGA switched completely off and unplugged.

Tuesday, January 30, 2018, 13:15: BIAS / EZL / EE @ 40 / 17 / 2

Tuesday, January 30, 2018, 13:20: BIAS / EZL / EE @ 50 / 21.8 / 2.5

Tuesday, January 30, 2018, 13:50: Half hour wait. Ok. No sparks.

Tuesday, January 30, 2018, 13:55: BIAS / EZL / EE @ 55 / 24 / 2.8

15 minute wait. No sparks.

Tuesday, January 30, 2018, 14:10: BIAS / EZL / EE @ 57.5 / 27 / 3.1

Tuesday, January 30, 2018, 14:23: BIAS / EZL / EE @ 60 / 28 / 3.1

Tuesday, January 30, 2018, 14:35: No sparks.

Tuesday, January 30, 2018, 15:05: BIAS / EZL / EE @ 0

Tuesday, January 30, 2018, 15:06: Auto-cooling started.

Wednesday, January 31, 2018, 06:59: Power/sources off.

Wednesday, January 31, 2018, 09:50: A wire (B - F) was too close (Almost touching) to the EZL and had visible sparks during HV tests 1 & 2. The wire was adjusted to sit higher. and away from the EZL

Wednesday, January 31, 2018, 12:53: Power/sources on.

Wednesday, January 31, 2018, 12:58: BIAS / EZL / EE @ 40 / 17 / 2

Wednesday, January 31, 2018, 13:02: BIAS / EZL / EE @ 40 / 17 / 2

Wednesday, January 31, 2018, 13:05: BIAS / EZL / EE @ 50 / 22 / 2.5

Wednesday, January 31, 2018, 13:08: BIAS / EZL / EE @ 55 / 24 / 2.8

Wednesday, January 31, 2018, 13:10: BIAS / EZL / EE @ 57.5 / 27 / 3.0

Wednesday, January 31, 2018, 13:14: BIAS / EZL / EE @ 60 / 28 / 3.1

Wednesday, January 31, 2018, 13:34: No Sparks.

Wednesday, January 31, 2018, 14:14: No sparks after one hour.

Wednesday, January 31, 2018, 14:44: Spark free at 1-1/2 hours.

Wednesday, January 31, 2018, 14:45: Bringing down voltage.

Wednesday, January 31, 2018, 14:56: BIAS / EZL / EE @ 0

Wednesday, January 31, 2018, 14:57: Sources off.

Monday, February 05, 2018, 09:10: the epics program was in 'White-out'. Turbo pumps tripped.

Unplug, re-plug PLC.

Monday, February 05, 2018, 09:16: Restart Turbo pumps on chamber & beamline.

Monday, February 05, 2018, 09:21: Ion gauges on.

Tuesday, February 06, 2018, 09:00: TSG:CB1 noted to be red. Attempts to restart/reconfigure failed. Alive displays red MAJOR. Fault submitted.

Wednesday, February 07, 2018, 08:40: A 75 kV Glassman power supply was installed in the rack for use in further HV testing.

-The 75kV power supply is linked into the keyed interlock system. The key & switch labelled BIAS/EZL will unlock it.

-The PS is currently not connected to the epics controls and can only be adjusted manually.

-The old Glassman supply is disconnected and removed from the cage.

The 75kV power supply is now in EPICS under the usual TSG:BIAS controls. The upper limit has been set to 70kV to protect the transformer.

Thursday, February 08, 2018, 16:54

Testing the HV bias I found that the einzel lens was behaving strangely. When I tried to put it higher than 1kV, the current would start spiking from 12uA to > 100uA. The voltage would jump around quite a bit as well (+/- 100V). Everything seems the way it was before, except the EZL power supply is still connected in parallel with the old bias power supply, which is no longer powered. Maybe one of the transorbs connecting line and neutral on the bias side is fried? I will unhook the connection to the old PSU and try again.

Friday, February 09, 2018, 08:25    Disconnected the AC power chain from the old bias supply but now cannot turn on the new bias supply in EPICS because the "TSGBIASSAFETY ok" interlock is tripped. No idea what this means - maybe it checks for AC power?

Friday, February 09, 2018, 08:48    Reconnected power to old bias supply, does not fix problem. Talked to Mike, he thinks it is PLC related, so will call Gelo later.

Friday, February 09, 2018, 11:38 TSGBIASSAFETY ok interlock problem seems to have solved itself, it now appears to be working fine. Will turn off power for now and continue tests on Tuesday. (note: turns out Mike told Dave about the problem and he solved it. No one knows what this interlock is for, but it used to be reset using the Global Reset button and now the RST button for the power supply should also reset it.)

Ramped up to 60kV with the new power supply, same as what we did last time with the standard test stand bias supply (see entry #627 ). Much more instability on the bias current readout (see attached screen shot), develops around 54kV. As well, the old supply read out 37uA at 60kV while the new supply reads out ~85uA. This could just be an EPICS read back issue though.

Sparks at 62kV on the bias.

Turned it down, turned it back up and got a spark at 60kV.

Now up to 63kV, no sparks so far (5 mins). Left EE @ -3100V and EZL @ 28.5kV

There is the sound of a low level continuous discharge, like HV power lines, and a very strong ozone smell coming from the HV duct that sticks into the cage and carries the cables from the HV rack. Also seems to be present near the EE insulating standoff. Can't see anything though. Maybe just moisture in the air? Starts at 55kV on the bias, does not change with EE voltage.

Turned EZL up to 29kV, bias stable at 63kV for 11mins.

Sparks at 63.6kV in the EE spark gap, EE @ -3.1kV.

I vacuumed inside the HV cage, though it has many small areas that are difficult to access so I am not sure how great a job I did.

Turned the bias up and again at 55kV I hear small sparks near the end of the HV duct that brings the cables from the rack. Cannot see anything. If it is really sparking where it sounds like sparking, it must be from the edge of the duct to the faraday cage.

Changing the EZL voltage and the EE voltage has no effect on where it starts sparking.

Found TMSTP6 off, restarted it, seems fine now (drawing 0.8A)