 Friday, July 19, 2019, 13:48, Fernando Maldonado, , , , , , , Problems/Solutions, RMP0A and FC6 gains signal redirection to another channel
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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. |
Sunday, July 28, 2019, 14:22, Luca Egoriti, P2N - 1, HP-FEBIAD, ITE, TM2, p2n - test1, p2n - test1, Problems/Solutions, p2n heating test 3 
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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. |
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Tuesday, July 30, 2019, 12:19, Luca Egoriti, P2N - 1, HP-FEBIAD, ITE, TM2, , , Problems/Solutions, p2n heating test - target inspection
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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 |
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Wednesday, August 07, 2019, 08:18, Luca Egoriti, P2N - 1, , ITE, TM2, , , Problems/Solutions, p2n heating test 4
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Tuesday, August 06, 2019, 16:00
Start ramp up to 300+300 = 600 A
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Wednesday, August 07, 2019, 15:19, Fernando Maldonado, , , , , , , Problems/Solutions, Test stand inspection
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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.
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Tuesday, August 13, 2019, 12:03, Aaron Schmidt, , , , , , , Problems/Solutions, Replace RP1
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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. |
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Thursday, August 15, 2019, 16:33, Fernando Maldonado, , , , , , , Problems/Solutions, 9-pin connection modification
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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) |
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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. |
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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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Thursday, September 26, 2019, 11:30, Aaron Schmidt, , , , , , , Problems/Solutions, Replace CANBUS board TSG:CB1
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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. |
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Wednesday, October 23, 2019, 09:51, Aaron Schmidt, , , , , , , Problems/Solutions, Water leak in Magnet PS
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Wednesday, October 23, 2019, 09:50:
Fault: 12797
WP: C2019-10-23-2 |
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Friday, October 25, 2019, 12:04, Anders Mjos, , , , , , , Problems/Solutions, ISG:TP1A found stopped
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| Restarted TP. Note that CG1A is above 50 mTorr. CG1B shows 15 mTorr |
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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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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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Friday, January 03, 2020, 11:56, Anders Mjos, , , , , , , Problems/Solutions, Upgrading BIAS Power Supply
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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. |
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Tuesday, January 21, 2020, 13:45, Aaron Schmidt, , , , , , , Problems/Solutions, RGA Communications error
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Tuesday, January 21, 2020, 13:42: The RGA was unable to connect. Typically connects on COM4, however it did not register. RGA Offline.
Brought in a separate RGA. Was able to connect & see the 2nd RGA ID on COM4. Removed 2nd RGA.
We likely need to replace / repair our communication chip again. |
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Thursday, January 23, 2020, 16:05, Anders Mjos, , , , , , , Problems/Solutions, Vacuum tripped due to PLC/EPICS for for the new BIAS
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| Thursday, January 23, 2020, 16:05: Restarting vacuum and TPs |
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