Thursday, January 17, 2013, 08:16: started heating of the target, vacuum at 2.6E-7T

 Thursday, January 17, 2013, 14:55: current at 572A/6.95V (panel reading), vacuum at 6.7E-7T

Thursday, January 17, 2013, 18:40: measurements done, vacuum at 5.3E-7T, current 572V/6.94V, start cooling down

Friday, January 18, 2013, 11:28: turbos stopped

 The temperature of the cooling water was logged during this test. See attachments for details. Note that current and voltage read back is not available due to trouble with the power supply. One thermocouple (Heat Shield circuit) came loose before the end of the test (not shown in plot).

 Wednesday, April 28, 2021, 22:30

First P2N heating test ongoing.

At P2NHT ~ 570 A and TBHT ~ 100 A shine is already seen, which suggests that current is flowing in the P2N target properly, see picture attached.

Most of the ramping is carefully monitored because the good vacuum signal from the TTS ramping procedure is obviously not working (bypassed), and if the pressure goes past 1E-5T the whole ITS should interlock and abruptly drop the currents, which we want to avoid.

Wednesday, April 28, 2021, 23:16

P2NHT set current = 810 A

P2NHT read current = 800 A

Master and slave have balanced fully, TBHT ramping still proceeds manually. I'm trying to get it to ~200A before leaving.

 Thursday, April 29, 2021, 00:54

Ramping successfully achieved.

P2NHT_Master = 594 A - 4.59 V

P2NHT_Slave = 611 A - 4.89 V

P2NHT = 1207 A

TBHT = 231 A - 2.29 V

Max temperature of welding cables = 40 deg

Zero current from the HV ground terminal (feedthrough I) to slave negative (feedthrough H)

Friday, June 21, 2019, 14:48: Roughing.

Friday, June 21, 2019, 15:18: Turbo pumps on.

Friday, June 21, 2019, 15:31: IG1 on.

Friday, June 21, 2019, 15:42: Vacuum@9.31e-5 T

Friday, June 21, 2019, 15:51: RGA switched on.

Friday, June 21, 2019, 16:30: Luca wants to put heat shields on his target. Aborting pumping. 

Friday, June 21, 2019, 16:57: IG1 off 

Friday, June 21, 2019, 16:57:  Turbo pumps off.

 Friday, June 21, 2019, 16:57: RGA switched off

AS

Monday, June 24, 2019, 07:18: Restart TP1A (Timeout) Global Reset. Restart again.

Monday, June 24, 2019, 07:29: TP1A to speed. Monitor. Vacuum @ 4.31e-06T

Monday, June 24, 2019, 07:31: Restart RGA.

Monday, June 24, 2019, 08:57: Waterlines opened. No response on RGA. Vacuum @ 3.23e-06T.

Monday, June 24, 2019, 09:03: Power / sources on. (No HV)

Monday, June 24, 2019, 09:04: TGHT / TBHT / Coil PS ready.  Vacuum @ 3.23e-06T.

Monday, June 24, 2019, 10:09: Auto-ramping TGHT / TBHT to 150 / 75 A @ 2 A per min. 

Monday, June 24, 2019, 10:57: Auto-ramping was halted @ 35 A. Coil increased. TGHT, TBHT, Coil brought back to 0 A

Monday, June 24, 2019, 10:58:

 Monday, June 24, 2019, 11:01: Auto-ramping TGHT / TBHT to 150 / 75 A @ 2 A per min. Manually ramp coil to 150 A @ approx the same rate.

Monday, June 24, 2019, 12:20: Halt at 140A TGHT / Coil. Vacuum limit?

Monday, June 24, 2019, 13:23: Increasing good vac limit. From 3e-6 to 4.5e-6 T

Monday, June 24, 2019, 13:29: Auto-ramping TGHT / TBHT to 300 / 120 A @ 2 A per min. Manually ramp coil from 140 to 150 A @ approx the same rate.

Monday, June 24, 2019, 13:37

 Monday, June 24, 2019, 14:4: TGHT @ 270 A. Vacuum limits reached 3.05e-06T. Gradual out-gassing w/ cont'd auto ramp.

Tuesday, June 25, 2019, 07:53: Auto-ramping TGHT / TBHT to 550 / 120 A @ 2 A per min.

Tuesday, June 25, 2019, 08:34:

Tuesday, June 25, 2019, 10:09: At approx 9:45am a vacuum spike tripped the test stand. All heaters at 0 A. Power supplies checked.

Tuesday, June 25, 2019, 10:11: TGHT / TBHT / Coil @ 6 A. Bumped up manually.

Tuesday, June 25, 2019, 10:12: Auto-ramping TGHT / TBHT to 300 / 100 A @ 2 A per min. Manually ramp coil to 150 A.

Tuesday, June 25, 2019, 11:01: One sheet on the target leg is shining red.

Tuesday, June 25, 2019, 11:01: Aborting the ramping.

Tuesday, June 25, 2019, 11:08 :

Tuesday, June 25, 2019, 11:18: Continue auto ramping

Tuesday, June 25, 2019, 11:37: Auto-cooling @ 12 A per min. Coil tapped down manually.

Tuesday, June 25, 2019, 11:58: Sources off. RGA off. Power off.

Tuesday, June 25, 2019, 11:59: IG1 off. Turbos off.

Screws instead of rivets on target leg. Insulator changed.

Thursday, July 04, 2019, 15:14: Roughing

Thursday, July 04, 2019, 16:00: Turbos on.

Thursday, July 04, 2019, 16:12: IG1 on. RGA on

Friday, July 05, 2019, 08:12: Waterlines opened. No response on RGA. Vacuum ok @ 4.57e-06T.

Friday, July 05, 2019, 08:14: Power / sources on.

LE,FM

Friday, July 05, 2019, 10:00: Autoramping TGHT/TBHT to 250/100 A @ 3 A/min. Vacuum limits change to 5e-6 T and 5.5e-6 T. Vacuum ok @ 4.2e-6 T.

Friday, July 05, 2019, 11:42 :

Friday, July 05, 2019, 11:45 : Auto ramping TGHT/TBHT to 300/150A @ 3 A/min.

Friday, July 05, 2019, 17:32:

Friday, July 05, 2019, 13:56: Source/Optics on

Friday, July 05, 2019, 14:38: BIAS / EE / EZL @ 30 / -1.5 / 13 kV. One spark while bring the BIAS to 30 kv around 27.5 kV. IV4 opened.

Friday, July 05, 2019, 17:32: BIAS / EE / EZL @ 0 for the weekend. Heater will be left on.

FM

Monday, July 08, 2019, 15:12:  BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Monday, July 08, 2019, 18:59: BIAS / EE / EZL @ 0.00 kV

Tuesday, July 09, 2019, 13:42: TBHT/TGHT @ 590/230A.

Tuesday, July 09, 2019, 13:49 BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Tuesday, July 09, 2019, 14:04: Dipole magnet not responding. Cycling the PS on EPICS didn't work. Cycling the PS directly worked.

Tuesday, July 09, 2019, 17:28: BIAS / EE / EZL @ 0.00 kV

Friday. July 26th 2019 

A new electrical configuration of the test stand was decided and installed. The TGHT and TBHT were parallelized in order to deliver up to 600 + 600 Amperes to the p2n target.

Connections:

TGHT+: D

TGHT-: C

TBHT+: one cable to E and one cable to G (both going down to the coil terminal blocks, which are connected to the target terminal blocks through a copper short.

TBHT-: both cables to F. One 4/0 cable was run from F to H to achieve the same configuration as for TBHT+. The H terminal is connected to I (HV ground, conencted to the target copper heat shield) through a braided cable

One braided cable was connected from C to H so the target line should have the same potential as the TBHT/coil lines.

Saturday, July 27th

The current was ramped from the TBHT and TGHT in parallel up to 400+400=800A.

Sunday, July 28th

One leg of the target is glowing a bit, while the other doesn't. This suggests the current path is not straightforward as we planned.

Temperature measurements of the cables on top of the test stand were performed using a mini IR thermometer (FLUKE, borrowed from Arthur).

Temperature of the braided cable from C to H = ~50 °C --> This points to an imbalance of current between the two lines (TGHT and COIL lines). This might be alright.

Temperature of the braided cable from H to I = ~130 °C. This likely points to a short circuit between the target and the copper heat shield.

Monday, July 29th

In order to understand if the target is broken or touching the heat shield, we opened up the service cap.

- The braided cable from H to I was removed

- The braided cable from H to Q was disconnected

These two modifications were made so that the current cannot come back from the heat shield, but has to go through the target lines.

The 4/0 cables from the PS to the feedthroughs were removed so that we could confirm there is a short between C (target) and I(HV ground/heat shield). The 4/0 were than put back on the feedthrough connections.

Under advice of Dan Louie and Arthur, we did not change any configuration of the power supplies. We know that the current would go through the controls loop, but the impedance of this electronics should be high enough to sustain the current load.

At 3pm, the ramping was still increasing the current on the target, but one leg (the right one) was still glowing. By this time, the total current in the target assembly is ~500 amperes, so there should be no signs of any glowing happening. Probably there's something wrong with the target itself. We're opening up to check the status of the target.

Tuesday, July 30, 2019, 10:00: Venting. 

Tuesday, July 30, 2019, 10:03: Purging heat shield water loop. 

Tuesday, July 30, 2019, 11:46: P2N removed

The p2n target was taken out of the test stand for inspection. Comments and measurements on the container below:

- Initially, continuity measurements were mode between the target and heat shield (HS) while they were still in the test stand, and looks like they were shorted. However, after removing the HS from the test stand, no short was seen, not even after moving the target legs. Instead, we confirmed that the short was happening in the test stand, so some water lines were touching each other. 

- The target look in one piece, except for the ion source that came off right after manufacturing. (see picture)

- The insulator connecting the bottom section of the ion source central current lead, to the HS, was broken (see picture)

- The annular disc of the connecting the inner and outer tube of the ion source was bulging outwards, maybe the ion source was heating too much while we put current in it (see picture).

- The screw connecting the top part of the central ion source current lead, is now of a blue-ish color

Resistance measurementts:

- Copper to copper: 1008 microOhm

- Copper to bottom flexy leg: 101 microOhm

-  Bottom-to-top (flexy): 30-45 microOhm

- Target: 476 microOhm

- Copper to top flexy: 261 microOhm

- Copper to bottom flexy (left): 100 microOhm

- Copper to bottom flexy (right): 94 microOhm

- Top Flexy - botton target assy (left): 88 microOhm

From left to right:

- Cu to bottom flexy leg: 102

- Flexy bottom to flexy top: 31

- Flexy top left to flexy top right: 473

- Flexy top to flexy bottom: 0 (???)

- flexy bottom to Cu: 93

Friday, August 02, 2019: p2n target installed in the test stand, the ion source was fully removed to avoid any risk of shorting. The Central ion source current lead is attached to the target body so it was left there and attached to its electrodes.

Friday, August 02, 2019, 13:15: Roughing.

Friday, August 02, 2019, 13:58: BV1A closed to allow pressure stabilization. Opened about 10-15 seconds later with BV1B.

Friday, August 02, 2019, 14:00: Turbos pumps on.

Friday, August 02, 2019, 14:09: Ion gauge on.

Friday, August 02, 2019, 15:15: RGA cycled. Now the filament can start. RGA on.

Tuesday, August 06, 2019, 07:49: RGA Error. Halted.

Tuesday, August 06, 2019, 07:53: Restarted RGA.

Tuesday, August 06, 2019, 09:32: Waterlines opened on FS#5. No response on RGA. Vacuum ok @ 1.16e-06T.

Power on.

Tuesday, August 06, 2019, 16:00

Start ramp up to 300+300 = 600 A

Tuesday, August 06, 2019, 17:30

Wednesday, August 07, 2019, 08:11

The same p2n target was installed in the test stand, taking off the ion source since we thought it could have been shorting to the reference electrode and providing a return path for the current, hence generating the asymmetric heating that was noticed on the target.

On Tuesday 6th afternoon, the p2n was ramped up to 600 A (300 + 300 A from TGHT and TBHT in parallel). The target and its right flexible leg were still glowing. After noticing it, the current was ramped down wating to open up for inspection.

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.

Tuesday, July 16, 2019, 10:27: The idea of this run is to have the full 600 A from TGHT and the full 600 A from TBHT.

This will done based on the rewiring done previously (see entry 745)

Tuesday, July 16, 2019, 12:16: Jumper cable F-H burning while target was at 600 A total. Ramp up aborted and auto-cooling started to remove the jumper.

Jumper removed.

TBHT cables on both positive coil FT.

Jumper E-G removed.

High current cable connecting F-H.

Tuesday, July 16, 2019, 16:49

Current ramped up to 300A + 300A on TGHT and TBHT in parallel, for an equivalent of 600A on the target. No burn to anything noticed, PS ramping nicely together. Stopped ramping up and started ramp down for the night.

Wednesday, April 18, 2012, 13:10: Roughing the vacuum chamber.

Wednesday, April 18, 2012, 13:34 : Turbo pumps started and at speed. Pressure 3.5 E-5 torr

Friday, August 30, 2013, 15:09 : Turbos stopped in preparation for installation. 

Friday, August 30, 2013, 16:22: Venting

Friday, August 30, 2013, 17:08: Roughing with NiO#2

Friday, August 30, 2013, 17:27: Starting turbos

Friday, August 30, 2013, 17:35: Turbos at speed

Friday, August 30, 2013, 17:37:  Vacuum at 1.9 E-7 T

Monday, September 09, 2013, 14:04: Opened up water. Vacuum stable at 1.5E-7 T

Tuesday, September 10, 2013, 08:59: Pumping out the gas lines.

Tuesday, September 10, 2013, 09:10: Gas lines evacuated.

Tuesday, September 10, 2013, 09:23: TPS:IV4 opened

Tuesday, September 10, 2013, 10:06: TGHT PS was off. Debiased to access el cage.

Tuesday, September 10, 2013, 10:07: EZL/EE/BIAS: 15/2/30 kV 61/674/55 uA

Tuesday, September 10, 2013, 10:08: COIL/ANODE: 50A/200V

Tuesday, September 10, 2013, 10:09: Started target heat to TGHT/TBHT 250/230A

Tuesday, September 10, 2013, 15:12: Started target heat to TGHT 350A (TBHT remains at 230A)

Wednesday, September 11, 2013, 13:06: Heating TGHT to 500A

Thursday, September 12, 2013, 08:44: Heating TGHT to 580A

Thursday, September 12, 2013, 09:39: Heating TBHT to 260A

Thursday, September 12, 2013, 10:06: BIAS sparking occurred  at 9:48 TBHT:RDCUR at 256A. Gradually reduced TBHT:RDCUR to 254A. Sparking stopped after ~20 min. ANODE:RDCUR, EE:RDCUR and IG1:RDVAC showed correlated sparking responses. ANODE:RDCUR went to 0 mA and back up after sparking had stopped.

 Thursday, September 12, 2013, 10:30: Manually increased TBHT:RDCUR to 260A.

Thursday, September 12, 2013, 11:06: A jump in TBHT:RDVOLT and TBHT:RDCUR at 10:44. Reduced TBHT:RDCUR to 255A

Thursday, September 12, 2013, 12:10:  TPS:Q4 was taken out by a spark. Restarted.

Thursday, September 12, 2013, 12:19: EZL to 13 kV

Thursday, September 12, 2013, 13:14: TBHT:RDCUR to 260A

Thursday, September 12, 2013, 13:31: TBHT:RDCUR to 265A. Sparking returns. Lower to 260A

Friday, September 13, 2013, 10:51: Increased TBHT:RDCUR to 265A

Friday, September 13, 2013, 10:58 : Increased TBHT:RDCUR to 270A

Friday, September 13, 2013, 11:05: Some sparking. Lowered EE to 1kV

Friday, September 13, 2013, 11:07 : Increased TBHT:RDCUR to 275A

Friday, September 13, 2013, 11:15 : Increased TBHT:RDCUR to 280A

Friday, September 13, 2013, 11:24 : Increased TBHT:RDCUR to 290A. ANODE:RDCUR 8.5mA. FC0 1.3E-6 A

Friday, September 13, 2013, 11:53: SV5 and SV2 gas lines opened.

Friday, September 13, 2013, 12:05: A spark took out Q4. Restarted.

Friday, September 13, 2013, 12:07: Lowered TBHT:RDCUR to 285A

Friday, September 13, 2013, 13:03: Started mass scan.

Friday, September 13, 2013, 14:27: Lowered TBHT:RDCUR to 280A

Friday, September 13, 2013, 15:01 : Lowered TBHT:RDCUR to 270A

Monday, September 16, 2013, 08:00: Mass scan started. 

Monday, September 16, 2013, 09:00: Starting heater ramp down. 2A/min. Gas lines closed.

Monday, September 16, 2013, 13:30: Source off. Target debiased.

Monday, September 16, 2013, 13:56: Turbos stopped

Monday, September 16, 2013, 14:50: Venting.

The GE on the Source tray and EE on the target was cleaned. The target will be conditioned again to verify if sparking has been reduced. Torque 120 in lbs

Monday, September 16, 2013, 17:05: Roughing. The roughing pump is somewhat noisy.

Monday, September 16, 2013, 17:26: Starting turbos.

Monday, September 16, 2013, 17:34: Turbos at speed

Monday, September 16, 2013, 17:36: Vacuum at 3.8E-5 T.

Tuesday, September 17, 2013, 08:10: Opened cooling water. Vacuum stable at 6.5E-7. EE flow 4.8 l/min 27.9 C

Tuesday, September 17, 2013, 08:20: Target biased: 30kV, 15kV, -1kV.

Tuesday, September 17, 2013, 08:25: Opening gas line SV5 and Ne SV3 evacuated

Tuesday, September 17, 2013, 08:32: Started auto-ramping to 580A/230A

Tuesday, September 17, 2013, 08:34: Coil to 50A, Anode to 200V (0mA)

Tuesday, September 17, 2013, 08:36: Opened IV4

Tuesday, September 17, 2013, 10:39: EE flow 4.9 l/min 28.5 C

Tuesday, September 17, 2013, 13:05: EE flow 4.9 l/min 28.8 C

Tuesday, September 17, 2013, 15:03: EE flow 4.9 l/min 28.8 C

Tuesday, September 17, 2013, 15:04 :TGHT at 580A, TBHT at 280A.

Tuesday, September 17, 2013, 15:30: TBHT:RDCUR to 290A 

Wednesday, September 18, 2013, 08:07: Stared mass scan.

Wednesday, September 18, 2013, 08:08:EE flow 4.9 l/min 28.8 C

Wednesday, September 18, 2013, 09:14: EE to 2kV. Current at 676 uA

Wednesday, September 18, 2013, 09:23: Opened He gas to 6.0. It was later found the SV2 was closed. I.e. no He was supplied to the target.

Wednesday, September 18, 2013, 09:26: Tuning source. EE 0.8kV, EZL 1.3kV

Wednesday, September 18, 2013, 09:32: Started mass scan.

Wednesday, September 18, 2013, 09:55: A jump in BIAS current from 42 to 61 uA. Came down towards 42 after 30 min

Wednesday, September 18, 2013, 10:22: Ramping down heaters at 2A and 2.5A /min

Wednesday, September 18, 2013, 10:23: He and Ne off.

Wednesday, September 18, 2013, 10:48: Gas lines closed.

Wednesday, September 18, 2013, 10:53: EE flow 4.9 l/min 28.5 C

Wednesday, September 18, 2013, 10:55: IV4 closed.

Wednesday, September 18, 2013, 10:59: Target de-biased.

Wednesday, September 18, 2013, 12:18: Heaters off.

Wednesday, September 18, 2013, 12:18: Stopped turbos.

Wednesday, September 18, 2013, 12:56: Started wenting.

Wednesday, September 18, 2013, 13:02: EE flow 4.9 l/min 28.2 C

Wednesday, September 18, 2013, 13:20 : Chamber vented.

Thursday, August 23, 2012, 11:38: NiO#1 installed.

Thursday, August 23, 2012, 11:38: Started roughing. Both roughing pumps timed out.

Thursday, August 23, 2012, 11:54: Roughing.

Thursday, August 23, 2012, 12:12 : Starting turbos.

Thursday, August 23, 2012, 12:16 : TP1B at speed.

Thursday, August 23, 2012, 12:20 : TP1A timed out. Restarted.

Thursday, August 23, 2012, 12:20 : Turbos at speed. Vacuum at 2.5E-5

Thursday, August 23, 2012, 12:22: Vacuum at 2E-5

Friday, August 24, 2012, 08:26: Vacuum at 3.1E-7

Anders Mjos wrote:

Thursday, August 23, 2012, 11:38: NiO#1 installed. Thursday, August 23, 2012, 11:38: Started roughing. Both roughing pumps timed out. Thursday, August 23, 2012, 11:54: Roughing. Thursday, August 23, 2012, 12:12 : Starting turbos. Thursday, August 23, 2012, 12:16 : TP1B at speed. Thursday, August 23, 2012, 12:20 : TP1A timed out. Restarted. Thursday, August 23, 2012, 12:20 : Turbos at speed. Vacuum at 2.5E-5 Thursday, August 23, 2012, 12:22: Vacuum at 2E-5 Friday, August 24, 2012, 08:26: Vacuum at 3.1E-7

 Friday, August 24, 2012, 08:28: Opened water lines. No response in vacuum. Stable at 3.1E-7

Did HV conditioning up to TSG:BIAS=30kV, TSH=EE=-600V

Turned off the HV for Kazuya to check the connection/output of the TSG:TGHT Xantrex power supply.

Friday, August 31, 2012, 11:39: Stopped turbos.

Friday, August 31, 2012, 13:06: Venting.

Friday, August 31, 2012, 13:23: Water lines purged.

Friday, August 31, 2012, 13:25 : Vented

Tuesday, October 27, 2020, 08:40: Roughing.

Tuesday, October 27, 2020, 09:13: TP1B on.

Tuesday, October 27, 2020, 10:13: TP1A on.

Tuesday, October 27, 2020, 12:59: Vacuum @ 4.55e-06T

Tuesday, October 27, 2020, 13:01: Waterlines opened. Vacuum @ 4.26e-06T.

Tuesday, October 27, 2020, 13:03: Power / sources on.

Tuesday, October 27, 2020, 13:05: Optics on. IV4 open. TGHT / TBHT check ok.

Wednesday, October 28, 2020, 04:30: Auto-ramping TGHT / TBHT  to 350 / 150 A @ 2 A per min. 

Wednesday, October 28, 2020, 06:30:

Wednesday, October 28, 2020, 06:42: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Wednesday, October 28, 2020, 07:33: Auto-ramping TGHT / TBHT  to 580 / 230 A @ 2 A per min.

Wednesday, October 28, 2020, 13:03:

Thursday, October 29, 2020, 15:19: HV to 0 kV. Begin auto-cooling @ 1 A per min.

Large Vacuum spike noted 5:30 approx. Tripped TS.

Monday, November 02, 2020, 08:32: Vacuum @ 2.65e-06T. PS/optics off (Sources already tripped)

Monday, November 02, 2020, 08:33: IV4 closed.

https://elog.triumf.ca/TIS/Test-Stand/818 - Leak Checks (FS#4 confirmed)

Monday, November 02, 2020, 09:27: IG1 off. Turbo pumps off.

Monday, November 02, 2020, 10:38: Venting.