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.

After submitting a fault report (FR - ISAC Fault 12461) a Work Permit was issued (WP - C2019-07-19-1),

Controls tunnel the faulty signal to another ADC by removing signal no longer used at the Test Stand.

Test successful with a constant current power supply in the range 1 nA-40 nA.

TBD: does this work with beam?

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.

Wednesday, August 07, 2019, 15:12:  Arthur helped inspected the electric connections on the TS.

One of the coil positive waterlines  was touching a HS waterline. Manually adjusted them to have a better clearance.

Inserted a used (heating) LP-FEBIAD target with a basic heat shield assembly with no end plate foil on the window side to observe heating. The P2N Coil / TGHT connections were added.

Test whether the TS connections are affecting the P2N heating or if it's the P2N target itself.

-Heat the TGHT only, observe, then ramp down.

-Heat Coil only, observe, then ramp down.

-Heat TGHT w/ Coil, observe, then ramp down.

Note* Heating should be even across the target. Elog & take pictures.

NO HV ALLOWED!!!!

Thursday, August 08, 2019, 09:05: Roughing.

Thursday, August 08, 2019, 09:14: BV1A closed to allow pressure stabilization. Opened about within 2 seconds later with BV1B.

Thursday, August 08, 2019, 09:41: Turbo pumps on.

Thursday, August 08, 2019, 09:47: Ion gauge on.

Thursday, August 08, 2019, 10:37: RGA on.

TSG:CG1A & TSG:CG1B do not appear to be pumping down efficiently - May need to swap out TSG:RP1 after this test. Last done April 18, 2018. elog: 655.

Friday, August 09, 2019, 08:49: Power on.

Friday, August 09, 2019, 08:51: Waterlines opened. No response on RGA. Vacuum ok @ 3.03e-06T

Friday, August 09, 2019, 08:56: Auto-ramping TGHT  @ 4 @ per min to 150 A.

Friday, August 09, 2019, 10:10: Ramping the TGHT down from 150 A to 0A.

Friday, August 09, 2019, 10:39: Anode Current @ 200 mA w/ 19V? Anode PS on. Voltage & current dropped off.

Friday, August 09, 2019, 11:18: TGHT and TBHT power supplies ramped to 150A each, total of 300A in the target

Friday, August 09, 2019, 13:12:  Target glows symmetrically. TGHT and TBHT ramped from 150A to 200A each for a total of 400A on the target

Friday, August 09, 2019, 14:05: RGA error.

Friday, August 09, 2019, 14:08: RGA Restarted.

Friday, August 09, 2019, 14:08: Target heating evenly on total 400 A.

Friday, August 09, 2019, 15:57:  Auto-ramping TGHT/TBHT  @ 4 @ per min to 250/250 A.

Friday, August 09, 2019, 16:28: Vacuum limit reach at 241 and 238 A for TGHT and TBHT, respectively.

Friday, August 09, 2019, 16:28: Auto-cooling started at 4A/min

Monday, August 12, 2019, 09:22: Sources off. RGA off.

Monday, August 12, 2019, 10:04: Power off. Ion gauge off. Turbos off.

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, August 15, 2019, 16:17: Q FT undone to remove the connection to the 9-pin

The idea is to change the cables to have individual signals. This will allow 4 thermocouple readings.

NB: The FT is not vacuum tight as of now  (gasket needs to be replaced and flange needs to be tight)

Thursday, August 29, 2019, 14:47 : Changing back to the nominal wiring 

Thursday, August 29, 2019, 17:01: TIS changed to Ferran's heat shield. 

Thursday, August 29, 2019, 17:02: 9-pin FT redone.

Friday, August 30, 2019, 00:28: Turbos on 

Friday, August 30, 2019, 00:36: IG1 on. 

Tuesday, September 03, 2019, 09:09: RGA on. Vacuum stable @ 2.1e-6T 

Tuesday, September 03, 2019, 15:00. Wire redone. Crosschecked by Arthur Leung. 

Tuesday, September 03, 2019, 15:16: Turbos tripped. TSG:CG1A above 50 mTorr 

Wednesday, September 04, 2019, 09:34 : Turbos on.  After the bakeout it will be better to have TSG:CG1A checked.

Wednesday, September 04, 2019, 09:43: IG1 on 

Wednesday, September 04, 2019, 09:45: RGA on 

Wednesday, September 04, 2019, 12:42 : Waterlines opened. No response on RGA. Vaccum stable @ 3.1e-6 T

Wednesday, September 04, 2019, 14:53 : Auto-ramping TGHT / TBHT to 100/ 100 A @ 4 A/min.

Wednesday, September 04, 2019, 16:04:  Auto-ramping TGHT / TBHT to 250/ 250 A @ 4 A/min.

Wednesday, September 04, 2019, 17:33: Final auto-ramping of the day TGHT / TBHT to 290/ 290 A @ 4 A/min. Vacuum stable@2.7e-7T

NB: Ferran's HS doesn't have an extraction electrode. Since the purpose of the heating is to "baked-out" the system, this is actually great as the shine will go downstream the beamline.

Thursday, September 05, 2019, 08:05:  Auto-ramping TGHT  to 580 A @ 2 A/min. Vacuum stable @2.97e-7T

Thursday, September 05, 2019, 09:30: TGHT PS is voltage-limited @440A and 5.2V. Stopping auto-ramping to increase the voltage limit to 7.7 (from previous screenshots).

Thursday, September 05, 2019, 09:31: Auto-ramping TGHT to 580A @ 2A/min.

Wednesday, May 15, 2019, 08:58: Optics/ HV on.

Monday, September 09, 2019, 16:05: Optics set. IV4 open.

Monday, September 09, 2019, 17:26: BIAS / EE / EZL @ 30 / -1.5 / 13 kV.

Twenty minutes w/o sparks

Monday, September 09, 2019, 17:52 Optics/HV off

Tuesday, September 10, 2019, 10:05:  Auto-cooling 4A/min

Tuesday, September 10, 2019, 13:27: IV4 closed.

Tuesday, September 10, 2019, 13:27: IG1 off. RGA off

Tuesday, September 10, 2019, 13:28: Turbos off

Wednesday, September 11, 2019, 09:21: Venting.

Wednesday, September 11, 2019, 09:24 HS waterline purged

Wednesday, September 11, 2019, 10:54:  Cleaned the interior of chamber with methanol and Kim-wipes. Some dust and debris were removed with

Wednesday, September 11, 2019, 10:54 : Adding EE to the Assy.

Wednesday, September 11, 2019, 11:03: Roughing.

Wednesday, September 11, 2019, 11:35: Turbos on

Wednesday, September 11, 2019, 11:47: Turbos at  speed.

Wednesday, September 11, 2019, 11:48: IG1 on

Wednesday, September 11, 2019, 11:54: RGA on

Friday, September 13, 2019, 08:56: RGA off. IG1 off.

Friday, September 13, 2019, 08:56: Turbos off

Monday, September 16, 2019, 08:11: Venting

Monday, September 16, 2019, 09:58: Assembly removed.

 Monday, September 16, 2019, 10:03: The rightmost alignment pin has been reinstalled (see picture attached). It was previously removed for Ferran's test. 

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.

Wednesday, October 23, 2019, 09:50:

Fault: 12797
WP: C2019-10-23-2

ISAC test stand power supply MB-1 leak.

Water can be seen underneath and behind power supply cabinet. Repairs as per WP.

Friday, October 25, 2019: Power supply operational. AM

Restarted TP. Note that CG1A is above 50 mTorr. CG1B shows 15 mTorr

Monday, October 28, 2019, 09:22: The local reader indicated 42 mTorr while EPICS showed 51mTorr.

CG1B showed 8.9mTorr while EPICS shows 14mTorr.

After reconnecting CG1A, EPICS shows 16mTorr. Anthony suggest replacing the gauge.

Wednesday, October 30, 2019, 14:49: John C. changed the polarity of the anode power supply to negative, and Fernando M. rewired the cabling on the service cap.

Thursday, October 31, 2019, 10:41: Cage removed. Tape put on the limit switches. Anode interlock bypassed.

Thursday, October 31, 2019, 10:42: Measuring voltage between F/T B and cable tray.

Thursday, October 31, 2019, 10:42: Readings match EPICS readback, i.e, 4 V readsback 3.7V and multimeter shows -3.816V

Thursday, October 31, 2019, 10:44: Probing from F/T B to J reads 0 V as expected. Anode is on common

Thursday, October 31, 2019, 10:45: Probing from F/T B to other F/T show 0V.

Thursday, October 31, 2019, 11:37: Current draw from the power supply matches the on neede for the 50 kOhm resistor.

Thursday, October 31, 2019, 13:20: After inspecting the interior, the 9 pin bracket was found not making full contact with the  baseplate (pic attached).

After pushing it and re doing the bolts conctact works.

Friday, November 15, 2019, 09:35: Roughing.

Friday, November 15, 2019, 10:34: Turbo pumps on.

Wednesday, November 20, 2019, 09:19: Turbo pumps off. Ion gauge off.

Wednesday, November 20, 2019, 11:20: Roughing. U-Line removed from HS waterline. Blanks installed. Do not open HS waterline.

 Friday, November 22, 2019, 19:02: The new design for the PEEK irradiation will be tested.

Blinds were removed and a new LP-SIS assembly with a modify heatshield was installed. Three termocuples installed.

Friday, November 22, 2019, 19:04: Roughing 

Friday, November 22, 2019, 19:38: Turbos on

Friday, November 22, 2019, 19:46: TSGIG1 on

Monday, November 25, 2019, 15:43: Vacuum stable@ 5.73E-7T

Monday, November 25, 2019, 15:47: Waterlines open. No response on Vacuum

Monday, November 25, 2019, 15:51: RGA on.

Tuesday, November 26, 2019, 08:41: Vacuum stablet@ 5.2E-7T

 Tuesday, November 26, 2019, 15:04: Power on

Tuesday, November 26, 2019, 17:17: Auto-ramping  to 300A/150A on the TGHT/TBHT @ 6 A/min

Tuesday November 26, 2019 20:00: Thermocouple 3 gives signs to have a bad contact with the HS. "Luckily" it is the one attached to the HS itself. TH 1 and 2 show similar temperatures below 40degC at 500A. Ramping to 600A

 Tuesday November 26, 2019 20:46: 600A TH1 and 2 around 40degC slightly going down. Tomorrow it will be known the final steady-state temperature. The test shows tho that the temperature evolves similarly between the copper piece and the Peek assembly. Showing good contact.

FM

Wednesday, November 27, 2019, 13:47: Th1=35, Th2=34.8, Th3=19.6 C.

Wednesday, November 27, 2019, 13:49: Closing Farady cage to proceed with HV tests.

Wednesday, November 27, 2019, 13:56: HV on. Optics set.

Wednesday, November 27, 2019, 14:01: RGA off to protect it from potential sparks.

Wednesday, November 27, 2019, 14:18: Bias/EE/EZL to 30/1.5/13 kV.\

Wednesday, November 27, 2019, 14:25: Bias/EE/EZL to 40/2.0/17 kV.

Wednesday, November 27, 2019, 14:28: Audible spark on top @ 48kV

Wednesday, November 27, 2019, 14:29: Bias/EE/EZL to 50/2.5/22 kV.

Wednesday, November 27, 2019, 14:35: Spark noticed on striptool, not audible.

Wednesday, November 27, 2019, 14:36: Audible spark on top. not as loud as previous one.

Wednesday, November 27, 2019, 14:39: Spark noticed on striptool, not audible.

Wednesday, November 27, 2019, 14:39: Moving to 55kV to condition for 10 minutes then coming down to 50kV

Wednesday, November 27, 2019, 14:42: Audible spark at 59kV. TP6 and CB knocked out.

Wednesday, November 27, 2019, 14:46: Bias/EE/EZL to 55/2.8/24 kV.

Wednesday, November 27, 2019, 14:50: Audible spark. TP6 , CB, optics knocked out..

Wednesday, November 27, 2019, 14:51: Audible spark. TP6 , CB, optics knocked out.

Wednesday, November 27, 2019, 15:01: Thermal incident (see elog 773)

Wednesday, November 27, 2019, 15:03: All HV to 0 V

Wednesday, November 27, 2019, 16:01: Resuming HV test. Max HV=50kV.

Wednesday, November 27, 2019, 16:10: Bias/EE/EZL to 30/1.5/13 kV.

Wednesday, November 27, 2019, 16:38: Bias/EE/EZL to 40/2.0/17 kV.

Wednesday, November 27, 2019, 16:50: Spark

Wednesday, November 27, 2019, 17:01: Spark

Wednesday, November 27, 2019, 17:09: Spark to EZL. Instabilitiesafter this, TBHT insulator glowing blue

Wednesday, November 27, 2019, 18:11:  Bias/EE/EZL to 0 kV.

Wednesday, November 27, 2019, 18:11: Auto-cooling at 10 A/min (2.5A/15s).

Wednesday, November 27, 2019, 19:13: IG1 off. Turbos off.

Wednesday, November 27, 2019, 20:35: Venting. Tighten the 4 bolts from the heatshields as they were not done before the tests. Removing thermocouples as they might be causing some sparks.

Wednesday, November 27, 2019, 20:42: Roughing

Thursday, November 28, 2019, 07:00: Turbo pumps on.

Thursday, November 28, 2019, 07:06: Ion gauge on.