Feedthrough R had a flange installed with a HV feedthrough on it for TM3 service tray prototype HV tests. It was replaced today with the original blank flange.

Anders Mjos wrote:

Thursday, August 23, 2012, 10:40: Replacing TMSRP2 with Edi. E-fault 6261. Thursday, August 23, 2012, 10:49: TMSRP2 replaced and started.

Edi will replace TMSRP2 again as it became noisy since yesterday morning. Vacuum should not be affected by the work.

Thursday, August 23, 2012, 10:40: Replacing TMSRP2 with Edi. E-fault 6261.

Thursday, August 23, 2012, 10:49: TMSRP2 replaced and started.

Tuesday, August 13, 2019, 11:55: Close PV1. Turn off RP1.

Tuesday, August 13, 2019, 12:02: RP1 replaced.

Tuesday, August 13, 2019, 13:24: TS exhaust / screen cleaned out.

Tuesday, August 13, 2019, 13:25: RP1 on

Tuesday, August 13, 2019, 13:59: Turbo pumps on.

Tuesday, August 13, 2019, 14:05: IG1 on.

Wednesday, August 14, 2019, 09:17: Revising the archiver, on July 8th at around 4 am, the vacuum on GC1A increased from normal levels to around 0.2 T. This happened while the target was held at a high combined current from both TGHT PS and Coil PS. See screenshots attached.

Thursday, August 15, 2019, 09:57: Vacuum is only around 1.06e-06T.  Turbo pumps off. Ion gauge off. 

Tuesday, August 20, 2019, 08:59: Ion gauge acting funny. CG1A unplugged & re-plugged in. Seems to work now?

Thursday, September 26, 2019, 11:28: The control board to TSG:CB1 was removed and replaced. 

Thursday, September 26, 2019, 11:30: All optics & steering operational. Board replacement successful.

Monday, June 10, 2019, 09:30: TM4 Source Tray removed - To HC area.

Mico replaced the T's with copper tube and leak checked.

Monday, November 02, 2015, 12:46: Roughing

Monday, November 02, 2015, 13:19: Starting turbos

Monday, November 02, 2015, 13:27: Turbos at speed. Vacuum at 2.6E-5 T. RGA on

Tuesday, November 03, 2015, 08:23: Pressurized TGHT line with 70 psi He. No response on vacuum or RGA.

Tuesday, November 03, 2015, 08:38: Opened water supply all lines. Vacuum stable at 6.8E-7 T. No response on RGA

Easy recovery after power outage, just had to power cycle the ground PLC IOC and the BiRa IOC.

Test stand vacuum currently pumping down again. Water and HV elements still off.

Tuesday, January 03, 2023, 11:13: Reset IG6 - Filament 2. Vacuum 7.22e-06T - AS

Tuesday, January 03, 2023, 14:00: Both Turbo pumps on.

Tuesday, January 03, 2023, 14:27: Vacuum @ 2.32e-06T

Tuesday, January 03, 2023, 14:28: FS#2 opened. Vacuum ok.

Tuesday, January 03, 2023, 14:29: FS#3 opened. Vacuum ok.

Tuesday, January 03, 2023, 14:30: FS#4 opened. Vacuum ok.

Tuesday, January 03, 2023, 14:31: FS#5 opened. Vacuum ok. Stable @ (2.24-2.32)e-06T. - AS

 The service cap has been reconfigured (colling and electric) to be compatible with the TM2 Source tray. Coil- is E & F , Coil+ is G & H.

Thursday, May 24, 2018: Configured coil to be (-) E&F, (+) G&H. Water should be supplied to both terminals in either configuration.

Monday, July 15, 2019, 15:54 : TBHT high current cables moved to Coil feedthroughs.

Coil high current cables moved to TBHT feedthroughs.

Resistor across  Coil feedthroughs E and F are now moved between TBHT feedthroughs A and B.

Tuesday, July 16, 2019, 09:00

A braided cable between F and H was changed due to the burnt aspect it had. Most likely this cable was burnt along the previous ones (see entry 740) but since it was uniformed blacked and not broken I didn't noticed it.

Resistor/Varistor between TGHT and TBHT removed.

Thursday, April 19, 2018, 12:52: Pin J1 was reconnected into the anode power supply. All jumpers were put back to remote control.

NOTE: the cable EXTLKT is still not connected. I will ask Carla about this one.

Thursday, April 19, 2018, 18:00: Cable EXTLKT connected.

Thursday, April 19, 2018, 18:12  When turning the transformer on, the Anode PS was not turned on. Neither the TGHT.

Thursday, April 19, 2018, 18:30: I turned off everything. Will check tomorrow with someone. 

Friday, April 20, 2018, 11:01 : Issue fixed. I've attached a picture of the jumpers connection for future references

Thursday, May 21, 2015, 17:26: Roughing

Thursday, May 21, 2015, 18:02: Turbos started

Thursday, May 21, 2015, 18:12: Turbos at speed. Vacuum at 4.7E-5 T

Friday, May 22, 2015, 08:00: Opened water. Vacuum stable at 3.4E-6 T. No response on RGA

Friday, May 22, 2015, 08:10: Pumping on gas line

Friday, May 22, 2015, 08:21: Opened gas line.

Friday, May 22, 2015, 08:30: Auto-ramping to 500 / 250 A at 4/2 A/min. Good/bad vacuum 4E-6 and 5E-6 T

Friday, May 22, 2015, 08:35: BIAS/EZL/EE to 10 / 10 / 1.5 kV. COIL 50 A, ANODE 200 V

Friday, May 22, 2015, 12:16: Opened IV4

Friday, May 22, 2015, 14:59: BIAS/EZL/EE to 30 / 15 / 1.5 kV

Friday, May 22, 2015, 15:29 : Auto-ramping to 580 / 270 A at 2/1 A/min.

Saturday May 23 15:10 TGHT: 7.51 V 580 A, TBHT: 2.23 V 270 A, ANODE 200 V 13.4 mA, FC0 1.5e-8 A, IG1 1.9e-6 T, COIL 0 V 0 A not responding, some bias sparking over last 7 hours

Monday, May 25, 2015, 09:07: EE current limiting. Started auto-cool down at 4/2 A/min. Vacuum 1.2E-6 T

Monday, May 25, 2015, 09:37: BIAS and EZL to 0

Monday, May 25, 2015, 10:34 : Closed IV4

Monday, May 25, 2015, 11:56 : Cool down complete. Stopped turbos.

Monday, May 25, 2015, 13:17: Venting

Monday, May 25, 2015, 13:25: HS cooling circuit purged.

Monday, May 25, 2015, 14:25: The EE water line was found to be touching the COIL lines on the source tray.

NOTE: COIL PS is a 100 A supply, thus actual COIL current is 0.5x COIL set point.

Changed the FEBIAD connector blocks to have copper tubes exit below the block. Extended ANODE wire to allow it to be wrapped around Cu-tubes and keep it further away from the GE lines.

Wednesday, May 13, 2015, 13:45: Roughing

Wednesday, May 13, 2015, 14:13: Starting turbos

Wednesday, May 13, 2015, 14:23: Turbos at speed. Vacuum at 4.6E-5 T

Thursday, May 14, 2015, 09:27: He pressure tested waterlines to 70 psi He. No response on the RGA. Vacuum 3.3E-6 T

Thursday, May 14, 2015, 09:39: Opened water supply. No increase on the RGA or IG

Thursday, May 14, 2015, 10:04: Tested COIL to 50 A set point (= 25 A). Returned to 0 A.

Thursday, May 14, 2015, 10:09: Auto-ramping to 400 / 200 A at 4 / 2 A/min. Good/Bad vacuum 4E-6 / 5E-6 T

Thursday, May 14, 2015, 13:59: COIL at 50 A

Thursday, May 14, 2015, 21:57 : Starting cool down.

Friday, May 15, 2015, 06:25: Stopped turbos

Friday, May 15, 2015, 07:42 : Venting

C-seals installed.

Friday, May 15, 2015, 13:56: Roughing

Friday, May 15, 2015, 14:28 : Staring turbos

Friday, May 15, 2015, 14:38: Turbos ate speed. Vacuum at 3.9E-5 T

Tuesday, May 19, 2015, 07:31: Vacuum at 7.1E-7 T. Pumping on gas lines

Tuesday, May 19, 2015, 07:35: Water lines opened. Vacuum stable at 7.1E-7 T. No response on RGA

Tuesday, May 19, 2015, 07:43: Opened gas lines (SV5)

Tuesday, May 19, 2015, 07:47: Auto-ramping to 400 / 200 A at 4 / 2 A/min. Good/Bad vacuum 2E-6 / 4E-6 T

Tuesday, May 19, 2015, 08:46: ANODE and COIL to 200 V and 50 A

Tuesday, May 19, 2015, 09:39: Auto-ramping to 500 / 250 A at 2 / 1 A/min. Good/Bad vacuum 2E-6 / 4E-6 T

Tuesday, May 19, 2015, 10:54: Opened IV4

Tuesday, May 19, 2015, 11:14: Atuo-ramping to 270 A. BIAS/EZL/EE at 30 / 15 / 1.5 kV

Tuesday, May 19, 2015, 11:42: BIAS/EZL/EE to 20 / 10 / 1.5 kV

Wednesday, May 20, 2015, 09:55:  Auto-ramping to 500 / 250 A at 4 / 2 A/min. Good/Bad vacuum 2E-6 / 4E-6 T

Wednesday, May 20, 2015, 09:57: BIAS/EZL/EE at 30 / 15 / 1.5 kV

Wednesday, May 20, 2015, 11:57: Auto-ramping to 580 / 290 A at 2 / 1 A/min.

Wednesday, May 20, 2015, 12:55: Vacuum excursion during beam tuning. Stopped turbos.

A leak was observed on the left coil conductor again. After inspecting the service cap, it was found that there was no water flow going through the left coil line due to differences in routing between the TM2 and the Test Stand source tray. A new coil line will be made and the water and electrical connections on the service cap will be reconfigured.

Wednesday, May 27, 2015, 14:19: Roughing

Wednesday, May 27, 2015, 14:50: Turbos started

Wednesday, May 27, 2015, 15:00: Turbos at speed. Vacuum at 1.6e-5 T

Thursday, May 28, 2015, 08:13: Water opened on HS line. Vacuum stable at 4.3E-7 T. No response on RGA

Thursday, May 28, 2015, 08:17: Pumping on gas line.

Thursday, May 28, 2015, 08:37: Open gas lines.

Thursday, May 28, 2015, 08:50: Started auto-ramping to 500 / 250 A at 4/2 A/min.

Thursday, May 28, 2015, 08:55: ANODE 200 V, COIL 50 A

Thursday, May 28, 2015, 08:52: Opened IV4

Thursday, May 28, 2015, 09:01: BIAS/EZL/EE to 30 / 15 / 1.5 kV

Thursday, May 28, 2015, 10:56: Continue auto-ramping to 580/290 A at 2/2 A/min

Thursday, May 28, 2015, 13:01: Ramping TBHT to 300 A

Friday, May 29, 2015, 08:23: ANODE current limited. Increased limit to 125 uA

Friday, May 29, 2015, 08:25: TPS:Q1 and Q4 found to be off. Switched back on

Friday, May 29, 2015, 14:38: Starting cool down of source.

Friday, May 29, 2015, 15:34: Close IV4

Friday, May 29, 2015, 15:36: BIAS/EZL/EE, COIL and ANODE off

Monday, June 01, 2015, 08:23: Vacuum at 2.8E-7 T. BIAS/EZL to 30  / 15 kV

Monday, June 01, 2015, 08:37: BIAS/EZL to 40  / 20 kV

Monday, June 01, 2015, 09:05: BIAS/EZL to 50  / 25 kV

Monday, June 01, 2015, 09:17: BIAS/EZL to 40  / 20 kV (target hand over to RH)

Monday, June 01, 2015, 09:50: BIAS/EZL to 50  / 25 kV

Monday, June 01, 2015, 10:08: BIAS/EZL to 55  / 25 kV. No sparks so far.

Monday, June 01, 2015, 10:28: EZL to 30 kV

Monday, June 01, 2015, 11:03: 2 sparks last 30 min

Monday, June 01, 2015, 11:48: 5 BIAS sparks last 80 min 

Monday, June 01, 2015, 11:49: BIAS /EZL/ EE off

Monday, June 01, 2015, 15:38: Stopped TP1B for out-gassing measurement tomorrow.

Tuesday, June 02, 2015, 10:28: Stopped TP1A.

Tuesday, June 02, 2015, 13:57: Water lines purged. GE line closed (not purged).

Wednesday, June 03, 2015, 08:25: Venting

To recover performance

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.

Wednesday, January 12, 2022, 16:08 : HV ramped to 30kV, EZL=15kV, EE=-1.5kV

Ramping up to 250A on TGHT, 200A on TBHT. See MassMarkerTest#1 for ramp up values of the thermocouples.

Seeing some beam on FC0, changing magnet settings to Cs to check FC6 then will ramp up.

Thursday, January 13, 2022, 14:22 :  1.3e-10 approximately Cs on FC6. Optimal EE -2700V, slightly higher than standard on EZL.

 Ramping down to Na on the magnet, found 5 pA:

 Started a ramp up to nominal heater values (TGHT-500 A  TBHT-230 A) but too much HV sparking so aborted at TGHT-299 A and TBHT-230 A. Ramped HV down to 16kV to get sparking to slow down.

Ramped quickly back up to 30kV to get FC readings but since there is so much sparking, we decided to ramp everything down and open the vacuum chamber.

PLAN:

1. ramp down heaters, vent vacuum, open chamber.

2. Try to tape the thermocouples up so that they are further from ground.

3. Try to crimp the bottom of the mass marker tubes, and bend them upwards so they aren't facing ground.

4. Add a dedicated ground to the COIL power supply.

From Fernando:

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Monday, January 17, 2022, 09:52: IG1 on. Source PS off. HV Cage removed. - AS
Monday, January 17, 2022, 11:11: Cage on. TGHT/TBHT PS on. - AS

Monday, January 17, 2022, 11:23: PS/ Sources on. - AS

Monday, January 17, 2022, 14:00: HV ramped to 20kV, EZL 10kV, EE, -1500V. Ramping TGHT/TBHT to previous values of 250A/200A.

Monday, January 17, 2022, 16:51 : Back to previous heater values, didn't find any Cs on FC6 so went to Na. Tuned and found the tune the opposite of last time, all voltage wanted to go lower. Found 736pA, maybe better than last time because I tuned quite a bit.

Monday, January 17, 2022, 18:00: Ramping to TGHT 300A, TBHT 230A, where we had sparking problems last time.

Monday, January 17, 2022, 18:17 : So far no sparking issues so I will start to heat up the mass markers. One spark about 4 mins after ramping up, after that maybe 10 sparks/40mins or so. Too many....

Monday, January 17, 2022, 19:20 : Got to 20A on the mass markers, will ramp down now.

Friday, January 28, 2022, 18:49 : Yesterday opened the HV rack to re-start data logging on the thermocouples. This morning ramped everything up and started the heaters. Found the Na current around 250A on the target, but abandoned looking for it because the TGHT heating was causing lots of outgassing, which was causing bias sparks. In addition, there is a weird effect where the Na current spikes, then slowly decreases over the course of an hour or something, to values lower than before the heating. Could this be an indication of some thermal issues, like cold spots where things condense? Or something is drifting. The HV common point on the target is at the mass markers now instead of at the exit of the ion source, but I can't imagine you would see such a large difference. The thermocouples do not change in value during these long slow declines. In light of this, decided to just go up and see what the thermocouples read. Settings were close to what is shown above - bit lower on the HV but magnet the same.

Monday, January 31, 2022, 16:23: Power/sources off. Thermocouple reader off. HV rack open. -AS

Wednesday, February 02, 2022, 07:36: IG1 & Turbo pumps off.  - AS