 Thursday, August 29, 2019, 14:47, Fernando Maldonado, , , , , , Ferran's heat shield, Problems/Solutions, Rewiring-Baking out
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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. |
Monday, September 16, 2019, 10:05, Fernando Maldonado, , , , , , , Problems/Solutions, Alignment pin reinstalled 
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Monday, September 16, 2019, 10:03: The rightmost alignment pin has been reinstalled (see picture attached). It was previously removed for Ferran's
test. |
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Monday, October 28, 2019, 09:24, Fernando Maldonado, , , , , , , Problems/Solutions, TSG:CG1A checked with local reader
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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. |
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Wednesday, October 30, 2019, 14:50, Fernando Maldonado, , , , , , , Problems/Solutions, Cathode bias mode configuration
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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. |
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Thursday, October 31, 2019, 11:37, Fernando Maldonado, , , , , , , Problems/Solutions, Probing anode bias supply on the service cap
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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 |
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Thursday, October 31, 2019, 13:22, Fernando Maldonado, , , , , , , Problems/Solutions, 9pin connector not fully in contact with baseplate
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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. |
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Friday, November 01, 2019, 16:01, Fernando Maldonado, , LP-SIS, , , 41790-9, 43515-9 , In progress, Peek seal tests on UCx#30 HS
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Friday, November 01, 2019, 15:47: A symbiotic peek seal assembly was installed on the manipulator grip to verify the temperature at high
voltage and high current.
Friday, November 01, 2019, 15:48: Three thermocouples added for temperature readings. |
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Wednesday, November 27, 2019, 16:01, Fernando Maldonado, , , , , , , Problems/Solutions, New Controller for TP6
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Wednesday, November 27, 2019, 15:31: During HV tests, bias was around 55kV when a spark occur and almost immediately the controller for TP6 made a noticeable
noise and smoke started to come out of it.
Control room notified about the smoke. |
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Monday, December 02, 2019, 16:01, Fernando Maldonado, , , , , , , In progress, Ferran irradiation copper end plate tests (aka MIST)
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Friday: Test to validate Ferran's assembly. The plan is to ramp up to operating current, apply high voltage, and possibly extract beam.
Turbos on. IG1. Power on.
Monday, December 02, 2019, 15:59: Auto-ramp to 230/600 A for TBHT/TGHT @ 2A/min and 4A/min (0.5A/15 s 1 A/15s.) |
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Wednesday, March 04, 2020, 17:15, Fernando Maldonado, , , , , , , Problems/Solutions, Emittance rig communication
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Wednesday, March 04, 2020, 17:13: EPICS page indicated a sucesful scan but data was empty.
Wednesday, March 04, 2020, 17:13: Power suppply didn't respond to the voltage sweep
Wednesday, March 04, 2020, 17:14: Problem most likely similar to elog entry 531. |
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Thursday, June 25, 2020, 08:57, Fernando Maldonado, Test FEBIAD, HP-FEBIAD, , , 38295-8, 42752-5, Done, FEBIAD development part 1/3
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Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!
The plan for today Thursday, June 25, 2020 is:
Optimize (tune) the beam to FC0 and then to FC6.
Compensate |
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Tuesday, June 30, 2020, 21:59, Fernando Maldonado, Test FEBIAD, HP-FEBIAD, , , 38295-8 , 42752-5 , Done, FEBIAD development part 2/3
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Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!
The plan for today Wednesday, July 01, 2020 ( |
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Monday, July 06, 2020, 05:28, Fernando Maldonado, Test FEBIAD , HP-FEBIAD, , , 38295-8 , 42752-5 , Done, FEBIAD development part 3/3
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Reminder. Mini pump still linked to SV1. DO NOT OPEN SV2!!!
The plan for today Monday, July 06, 2020 is:
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Wednesday, December 02, 2020, 16:18, Fernando Maldonado, , , , , , , Done, Gas delivery system upgrade
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Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage.
The changes performed were as follows:
Remove He gas tank (to make room for new tank)
Remove calibrated leak to connect new gas line
Remove convectron |
 Thursday, January 14, 2021, 08:31, Fernando Maldonado, , , , , , , In progress, Gas delivery system upgrade
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Fernando Maldonado wrote:
Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage. |
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Wednesday, January 20, 2021, 11:30, Fernando Maldonado, , , , , , , Done, Cathode bias mode configuration confirmed
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Fernando Maldonado wrote:
Wednesday, October 30, 2019, 14:49: John C. changed the polarity of the anode power supply to negative, |
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Thursday, January 21, 2021, 10:10, Fernando Maldonado, , LP-SIS, , , 44139-10, 44378-2, Done, Energy spread calibration - SIS with TBHT negatively biased
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Thursday, January 21, 2021, 10:05: Anodeless Negative Bias On Surface Ion Source, or ANBOSIS (still working on the acronym). installed to
test energy spread vs position.
The SIS allow a more forgiving operation while calibrating such that other sources can have these type of measurements. |
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Thursday, January 21, 2021, 10:55, Fernando Maldonado, , , , , , , Done, Updated Good Vac value for TSG:IG1
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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 |
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Monday, February 01, 2021, 08:38, Fernando Maldonado, , LP-SIS, , , 44139-10 , 44378-2 , Failed, Energy spread calibration
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Monday, February 01, 2021, 08:38 : The anode seems to be shorted but we can still test the amount of dispersion at the image position, and
correlate with energy spread.
Monday, February 01, 2021, 11:27: Bias/EZL/EE @ 30/0/1.5 kV. |
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Thursday, February 04, 2021, 18:48, Fernando Maldonado, , LP-SIS, , , 44139-10, 44378-2 , Problems/Solutions, Energy spread calibration with SIS 6x
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The system was vented to make clearance on the waterlines as a very small continuous discharge was observed.
The inspection revealed some marks on the HS water line (sideview photo). From the the bottom and from real close (zoom and backview photo) the
marks are quite noticeable with shinny copper in the middle and dark circles around. |
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