Anders Mjos wrote:

A new power supply was installed today by John Chow. Due to differences in pin configuration of the controls, a change to the cabling is required. Contacted controls (Julie) for support.

 Ray from controls has updated EPICS and changed the cabling today. The power supply is operational.

NOTE: Current limit will need to be set in EPICS. Default value should be 0.1 mA for now.

Tested the power supplies and locked up the HV cage.

Turned on the HV: 30kV.

Tomorrow we'll start up the heaters: 580A for the target and 280-300A for the tube.

On Tuesday the hard good vacuum level was changed from 7e-6 T to 1e-5 T to allow larger leak rates when testing FEBIAD.

Also this new level should allow faster heating rates (be mindful and cautious)

Work done as per WP C2021-01-19-9

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.

 Tuesday, August 04, 2020, 15:04: Roughing.

Wednesday, August 05, 2020, 06:08: Turbo pumps on. 

Thursday, August 06, 2020, 06:58: Vacuum @ 1.52e-06T

Thursday, August 06, 2020, 07:01: Waterlines opened. Vacuum ok @ 1.52e-06T

Thursday, August 06, 2020, 07:03: Power / Sources on.

Thursday, August 06, 2020, 07:05: Auto-ramping TGHT / TBHT to 300 / 150 A @ 4A per min.

Thursday, August 06, 2020, 07:13: Adjust TBHT Voltage limit back to 3.001 V.

Thursday, August 06, 2020, 07:52: IV4 opened. HV PS on.

Thursday, August 06, 2020, 07:53: Optics up to FC0 on.

Thursday, August 06, 2020, 08:03: BIAS /  EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, August 06, 2020, 08:27: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2A per min.

Thursday, August 06, 2020, 11:17: BIAS /  EE / EZL @ 40 / -2.0 / 17 kV.

(monitor) Next set below

Thursday, August 06, 2020, 12:00: BIAS / EE / EZL @ 45 / 2.25 / 20.

Thursday, August 06, 2020, 12:17: BIAS / EE / EZL @ 50 / 2.5 / 22. Sparks on EE (K) cap sprak gap?

Thursday, August 06, 2020, 12:31: While tapping up the HV , (52 kV approx) , the system tripped due to a large spark around 12:25 pm. Reset req'd

Thursday, August 06, 2020, 12:33: Auto-ramping TGHT / TBHT to 580 / 230 A @ 6A per min.

Thursday, August 06, 2020, 12:43: BIAS /  EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, August 06, 2020, 13:24: Halt auto ramp. Odd behaviour on TBHT CUR/VOL & TGHT VOL.

Thursday, August 06, 2020, 13:27: Warped. Visual short on TBHT. Auto-cool @ 4 A per min.

Thursday, August 06, 2020, 13:32: HV off. IV4 closed.

Tuesday, August 11, 2020, 07:02: Power/sources off.

Tuesday, August 11, 2020, 07:06: Ion gauge IG1, Turbo pumps off.

HS target leg openings were milled. Short from previous test by the look of it. TBHT insulator on source side is cracked.

Wiring up top adjusted for better clearance. EE (K) Cap appears ok.

Tuesday, August 11, 2020, 12:03: Roughing.

Tuesday, August 11, 2020, 12:43: Turbo pumps on.

Tuesday, August 11, 2020, 12:50: Ion gauge on.

Wednesday, August 12, 2020, 06:47: Waterlines opened. Vacuum stable @ 1.76e-06T.

Wednesday, August 12, 2020, 06:51: Power / Sources / Optics on (Half to FC0).

Wednesday, August 12, 2020, 06:53: Auto-ramping TGHT / TBHT to 350 / 150 A @ 2 A per min.

Wednesday, August 12, 2020, 06:54: IV4 opened.

Wednesday, August 12, 2020, 11:36: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Wednesday, August 12, 2020, 14:10: TGHT / TBHT voltages ok.

Wednesday, August 12, 2020, 14:23: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Wednesday, August 12, 2020, 15:00: BIAS / EE / EZL @ 35 / -1.7 / 15 kV. 

Wednesday, August 12, 2020, 15:06: BIAS /  EE / EZL @ 40 / -2.0 / 17 kV. Spark* audible.

reset steering & IG6.

Wednesday, August 12, 2020, 15:08: Spark*

Wednesday, August 12, 2020, 15:17: BIAS / EE / EZL @ 45 / 2.25 / 20. spark*

Sparks* Reset IV4, TP6, steering & IG6.

Wednesday, August 12, 2020, 15:20: BIAS /  EE / EZL @ 40 / -2.0 / 17 kV.

Wednesday, August 12, 2020, 15:24: Optics Q1 not resetting.

Wednesday, August 12, 2020, 15:29: HV to 0 kv

Thursday, August 13, 2020, 07:32: TPS:Q1 has not revived on the V+ setting. Comes back on V-. Multiple attempts to engage the PS, turning it off & on. Leaving it in "ON" status but 0V.

Thursday, August 13, 2020, 07:45: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Thursday, August 13, 2020, 08:27: Sparks* 3 audible, almost back to back. only TPS:Q1 affected. V- jumped from 0V to 1500V on it's own. Reset to 0V.

Thursday, August 13, 2020, 08:54: BIAS / EE / EZL @ 35 / -1.7 / 16 kV. Increased EZL V to stabilize it on the strip tool.

Thursday, August 13, 2020, 10:56: Reset IG6. Spark affected.

Thursday, August 13, 2020, 11:05: Audible spark* in behind TS?

Thursday, August 13, 2020, 11:06: TPS:Q1 affected. V- jumped from 0V to 1500V on it's own. Reset to 0V.

Thursday, August 13, 2020, 11:12: BIAS /  EE / EZL @ 40 / -2.0 / 20 kV.

Thursday, August 13, 2020, 11:21: Spark* Charged up both TSG:CBC to 2500 V. Reset to 500 V.

Thursday, August 13, 2020, 13:50: BIAS / EE / EZL @ 45 / -2.2 / 21 kV.

Thursday, August 13, 2020, 14:11: Spark* Minor.

Thursday, August 13, 2020, 14:15: BIAS / EE / EZL @ 50 / -2.5 / 22.5 kV.

Thursday, August 13, 2020, 14:18: Spark. Knocked out IV4, TP6, & optics. Reset. Oh and would you look at that TPS:Q1 works now. Set to 790 V.

Thursday, August 13, 2020, 14:21: Spark*

Thursday, August 13, 2020, 14:24: Spark* but not audible. They're decreasing in size.

Thursday, August 13, 2020, 14:31: Audible spark*. Reset TSG:CBC & TPS:Q1

Thursday, August 13, 2020, 15:01: Observed the spark in the spark gap EE (K).

Thursday, August 13, 2020, 15:19: BIAS / EE / EZL to 0 kV. HV off. Optics off.

Monday, August 17, 2020, 10:57: Begin slow auto-cooling @ -0.75 A per min. 

 Straight tube target / TGHT for outgassing.

Wednesday, June 02, 2021, 11:06: Roughing.

Wednesday, June 02, 2021, 12:15: TP1B on. 

Wednesday, June 02, 2021, 12:54: TP1 A on. IG1 on. 

Wednesday, June 02, 2021, 14:58: Vacuum @ 2.24e-06T

Wednesday, June 02, 2021, 15:01: Waterlines opened. vacuum remained stable.

Wednesday, June 02, 2021, 15:02: Power / sources on.

Thursday, June 03, 2021, 11:18: Auto-ramping TGHT @ 2 A per min to 580A. 

Sunday, June 06, 2021, 21:26: Auto-cooling @ 1 A per min. 

Monday, June 07, 2021, 08:33: Power/sources off. IG1 off. Turbo pumps off.

HS waterlines were very tight to line up.

Wednesday, May 26, 2021, 14:29: Roughing.

Wednesday, May 26, 2021, 15:09: TP1B on. 

Wednesday, May 26, 2021, 15:36: TP1B off. 

Wednesday, May 26, 2021, 16:37: Venting. 

Wednesday, May 26, 2021, 18:03: VV1 closed. 

Thursday, May 27, 2021, 07:05: Gaskets swapped. Connections inspected. Roughing.

Thursday, May 27, 2021, 07:47: TP1B on. 

Thursday, May 27, 2021, 08:00: TP1A started.

Thursday, May 27, 2021, 08:16: IG1 on. 

Monday, May 31, 2021, 08:08: Vacuum @ 7.29e-07T.

Monday, May 31, 2021, 08:10: Waterlines opened. Vacuum ok @ 7.26e-07T

Monday, May 31, 2021, 08:12: Power/Sources on.

Monday, May 31, 2021, 08:15: No response on TGHT. TBHT ok.

Monday, May 31, 2021, 11:30: Loose control cable found on the PS. Connected. Manually set TGHT / TBHT to 10 A & back ok. Checked FS#5 interlocks - OK.

Monday, May 31, 2021, 11:50: Auto-ramping TGHT / TBHT to 300 / 150 A @ 2 A per min.

Monday, May 31, 2021, 18:06: Auto-ramping TGHT / TBHT to 580 / 230 A @ 2 A per min.

Tuesday, June 01, 2021, 15:40: Auto-cooling @ 1 A per min.

Wednesday, June 02, 2021, 07:57: Power / sources off. Ion gauge & turbo pumps off. 

Wednesday, June 02, 2021, 07:58: FS#5 purged.

Wednesday, June 02, 2021, 10:12: Venting.

T/C installed

CH 1: Attached to TGHT outside middle
CH 2: Through HS outside TGHT right
CH 3: Through HS inside TGHT  right
CH 4: Attached to HS on left gripper. Does not read temp

Monday, September 08, 2014, 16:22: Roughing

Monday, September 08, 2014, 16:43: Started turbos

Monday, September 08, 2014, 16:51: Turbos at speed

Monday, September 08, 2014, 16:53: Vacuum at 2.7E-5 T

Tuesday, September 09, 2014, 08:20 : Opened HS water supply. Vacuum stable at 3.7E-7 T

Tuesday, September 09, 2014, 08:21: Starting auto ramping. TGHT to 580 A at 2A/min

Tuesday, September 09, 2014, 08:50 :

Wednesday, September 24, 2014, 11:30: T/C attached to tube does no longer read a correct temperature. Cooling down.

Thursday, September 25, 2014, 08:50: Turbos stopped.

Thursday, September 25, 2014, 11:07: Venting

Thursday, September 25, 2014, 14:00: Heat shield removed

Friday, July 18, 2014, 11:30: Roughing

Friday, July 18, 2014, 11:51: Starting turbos

Friday, July 18, 2014, 11:59: Turbos at speed.

Friday, July 18, 2014, 12:01: Vacuum at 1.4E-5 T

Monday, July 21, 2014, 08:51: Opened water for HS circuit. Small vacuum "bump" recovered to 1.5E-7 T

Monday, July 21, 2014, 09:17: Starget TGHT autoramping to 580A @ 2 A/min

Monday, July 21, 2014, 14:05: TGHT @ 580A 7.47V.

Tuesday, July 22, 2014, 10:41: Data logger installed

 Tuesday, July 22, 2014, 13:41: BIAS / EZL / EE to 30 / 14 /2 kV. EE:RDCUR 695 uA

Tuesday, July 22, 2014, 14:23: Starting cool down of TGHT 2A/min. Vacuum at 2.7E-7 T 

Wednesday, July 23, 2014, 09:05: BIAS / EZL / EE off. Turbos off. Vacuum at 1.3E-7 T.

 Wednesday, July 23, 2014, 14:05: Purged HS water line.

Wednesday, July 23, 2014, 14:07 : Venting

Wednesday, July 23, 2014, 14:33: Heat Shield removed

Target needs to be removed form teststand to remove heatshielding around target oven. The chamber will be vented, water circuits flushed and target removed.

Sebastian Raeder wrote:

Start cooling of Target RFQ empty

 Tuesday, January 15, 2013, 16:09: Turbos off

Tuesday, January 15, 2013, 21:15: Start venting with nitrogen- SR

Turbos started

A new turbo has been installed. Eddie said the other one had crashed but not catastrophically. He recommends the test stand be wiped clean before pumping because there is a fine layer of Aluminum dust on the chamber base.

Tuesday, July 19, 2016, 15:14: Roughing.

Tuesday, July 19, 2016, 15:48: Turbo pumps started.

Tuesday, July 19, 2016, 15:55: Ion Gauge on.

Wednesday, July 20, 2016, 08:15: RGA On.

Wednesday, July 20, 2016, 08:25: Power/water on. No response on RGA. Vacuum stable @ 2.7E-7 T

Wednesday, July 20, 2016, 08:28: Sources on BIAS/EZL/EE @ 30/13/0 Kv

Wednesday, July 20, 2016, 08:31: Auto-ramping TBHT @ 2A/min.

Wednesday, July 20, 2016, 13:01: Auto-Cooling TBHT @ 3A/min.

Wednesday, July 20, 2016, 14:45: Sources off.

Wednesday, July 20, 2016, 14:47: RGA off. IV4 Closed.

Wednesday, July 20, 2016, 14:49: Turbos off.

Wednesday, July 20, 2016, 14:53: Power off. Water line purged.

Thursday, July 21, 2016, 07:52: Venting

Monday, July 18, 2016, 12:19: Roughing.

Monday, July 18, 2016, 13:13: Turbo pumps on.

Monday, July 18, 2016, 13:18: Ion gauge on.

Tuesday, July 19, 2016, 08:28: Power/Water on. No response on RGA. Vacuum stable @ 2.63E-7 T.

Tuesday, July 19, 2016, 08:43: Optics on. BIAS/EZL/EE on 30/13/0 kV. Auto-ramp TBHT to 110A @ 2 A/min.

Tuesday, July 19, 2016, 10:15: Auto-ramp TBHT to 130A @ 2 A/min.

Tuesday, July 19, 2016, 13:325: Auto-ramp down TBHT @ 2 A/min - AM

Tuesday, July 19, 2016, 13:36: Optics and BIAS / EZL / EE off -AM.

Tuesday, July 19, 2016, 14:28: Turbos off/Turbo vent.

Tuesday, July 19, 2016, 14:33: Venting.

Thursday, July 14, 2016, 14:41:  Roughing started.

Thursday, July 14, 2016, 15:41: Turbo pumps started.

Thursday, July 14, 2016, 15:58: Ion gauge & RGA on.

Friday, July 15, 2016, 08:15: Water, power/sources on. Vacuum stable at 3.9E-7 T. No response on RGA.

Friday, July 15, 2016, 08:25: Optics on. BIAS/EZL/EE to 30/13/1.5kV

Friday, July 15, 2016, 08:30: Auto-ramp TBHT to 110A @ 2A/min

Friday, July 15, 2016, 11:19; Auto-ramp TBHT to 130A @ 2A/min

Friday, July 15, 2016, 11:21: IV4 opened

Monday, July 18, 2016, 09:03: TBHT cooling started @ 2A/min

Monday, July 18, 2016, 09:04: RGA disconnected/Filament off.

Monday, July 18, 2016, 10:16: Sources off. IV4 closed. Turbo pumps off.

Monday, July 18, 2016, 11:17: Venting. Note* Global reset used each time VV1 was opened and closed. VV1 becomes non-responsive otherwise.

Monday, July 18, 2016, 11:25: Water purged. Power off/lockout.

Monday, July 11, 2016, 13:49: Begin roughing.

10 µL: K & Rb added

5 µL: Cs added

Monday, July 11, 2016, 14:59 : Turbo pumps started.

Monday, July 11, 2016, 15:33 : Ion gauge on.

Tuesday, July 12, 2016, 08:13 : RGA on.

Tuesday, July 12, 2016, 08:18 : Water, power/sources on. Vacuum stable at 3.2E-7 T. No response on RGA.

Tuesday, July 12, 2016, 08:35: Auto-ramping TBHT only @ 1A/min to 110A. EZL/EE/BIAS to 13/1.5/30 kV.

Wednesday, July 13, 2016, 08:17: Reduced TBHT to 100 A -AM

Wednesday, July 13, 2016, 18:15: Auto-cool @ 1.5A/min

Thursday, July 14, 2016, 08:20: Sources/power off

Thursday, July 14, 2016, 08:27: RGA off, IV4 closed, Ion gauge off. Turbo pumps off. Water lines closed.

Thursday, July 14, 2016, 12:57: Venting

   The insulator for the tube heater was observed to be glowing with a blue shine when the target was on high voltage. The insulator was glowing on the side closest to the 9-pin connector. See attached photo.

I have removed the resistor/varistor combinations that go between the poles of the target and tube heaters, and between those two supplies. I tested all the components to make sure they were still working after the sparks - for the record the varistors clamp at 23V, not 33V as implied by the schematic.

Tuesday, March 06, 2018, 10:48  BIAS/EE/EZL = 59.5/-1000/29.5  There was some kind of spark, the current on the bias supply went up to 400uA ( normally at 40 +/- 5 ) and the vacuum jumped a bit ( but still in the 10e-7 range ) but I didn't hear anything. It took out TP6 again. See first attachment.

Tuesday, March 06, 2018, 10:54  BIAS/EE/EZL = 60/-1/30

...

Problems

...

Tuesday, March 06, 2018, 12:00 BIAS/EE/EZL = 60/-1.5/29

Tuesday, March 06, 2018, 12:37 BIAS/EE/EZL = 62/-1.5/30

Tuesday, March 06, 2018, 14:11 BIAS/EE/EZL = 64/-1.5/31 No sparks but occasional ticking sounds from either the EZL or behind where the EE is... see second screenshot

Tuesday, March 06, 2018, 14:40 BIAS/EE/EZL = 65/-1.5/33

Test stand has been sitting at 65kV for about an hour now. Some small increases in bias power supply current but nothing significant (40uA). Some small sparks on the way to this voltage, and I ramped up very slowly. The corona discharges seen before seem to be related to the resistor/varistor combos since there are none now that I have removed them. Will redesign and reinstall.