 Monday, January 20, 2014, 13:40, maicodallavalle, Spent Target Vault, Maintenance, , F-308, Empty F-308s
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Four empty F-308s just arrived back at Triumf. I moved them from shipping to the Remote Handling Shop for service and inspection. I will work on them when not busy with my other shutdown work. ( Cyclotron work) |
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Tuesday, July 21, 2020, 14:22, Adam Newsome, Spent Target Vault, Standard Operation, , , Emergency Close Mechanism Test
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The emergency close mechanism for the Storage Vault door was tested by Adam Newsome and Travis Cave. The door was opened to its fully open limit, then closed with the emergency system.
The test was successful. |
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Thursday, July 15, 2021, 09:02, Adam Newsome, Spent Target Vault, Standard Operation, , , Emergency Close Mechanism Test
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The emergency close mechanism for the Storage Vault door was tested by Adam Newsome and Travis Cave. The door was opened to its fully open limit, then closed with the emergency system.
The test was successful. |
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Wednesday, May 11, 2022, 16:15, Nadia Jorgenson, Spent Target Vault, Standard Operation, , , Emergency Close Mechanism Test
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The emergency close mechanism for the Storage Vault door was tested by Travis Cave, Nadia Jorgenson, and Dan McDonald. The door was opened to its fully open limit, then closed with the emergency system.
The test was successful. |
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Friday, May 12, 2023, 09:56, Adam Newsome, Spent Target Vault, Standard Operation, , , Emergency Close Mechanism Test
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The emergency close mechanism for the Storage Vault door was tested by Travis Cave, Nadia Jorgenson, Adam Newsome, and Jason Zhang. The door was opened to its fully open limit, then closed with the emergency system.
The test was successful. |
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Friday, July 30, 2021, 16:19, Carla Babcock, ITE, Repair, TM4, Ta#62, Electrical issues on Ta62
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TLDR: TBHT voltage too high and rising too quickly with TGHT current - voltage limited. TGHT power supply tripped breakers somehow. ITE:EL not outputting voltage.
A short between feedthroughs A and P developed at the end of the p2n run in this module, and was fixed by Chad prying apart the lines in the source tray with a long teflon bar. We did not take the containment box off to fix it properly for reasons of time and also potential damage to the containment box. This seemed to fix it and David measured around 13MOhms between A-P when the module was installed in ITE. To make sure we could recover if the short reappeared during the run, David did not connect the P/Q feedthrough to HV common on the module top as usual, but it was connected in the electrical room. I also unhooked the busbar from the coil power supply.
When trying to start the TGHT ramp up, it was discovered that ITE:TGHT had a fault in its readback circuit, which was showing negative voltages. Not sure how this happened, since the power supply was not used for the previous p2n run, maybe an HV spark? This supply was replaced with the spare (SN 1161-9894).
When TGHT and TBHT were able to be ramped up, we found that the tube heater voltage was increasing too much with the target current. Normally the rate of increase is about 0.0004 V per amp on TGHT. This time it was 0.004 V/A. This was causing the TBHT to be voltage limited, which I thought could be related to the AP short. So I re-wired it such that the P feedthrough (#7 in the electrical room) was disconnected from everything except it was tied to feedthrough A (#1) using a 100 Ohm resistor. This should prevent it from floating and also prevent current from going through. See documentation in the Target Records folder (https://documents.triumf.ca/docushare/dsweb/Get/Document-204373/July272021_ITETM4_electricalissues.pdf).
During the subsequent ramp up, the TGHT power supply tripped the breakers when it was at 500A, 8V. The cause of this is still uncertain, and the TBHT voltage issue persisted after the wiring change. In the interest of time we decided to stay conservative on the currents used and continue to run like this. It may also be possible that the copper block which is supposed to reference TBHT negative to HV common is not attached.
Finally ITE:EL is still not working. It shows a value on the front of the PSU but doesn't draw enough current and doesn't affect the beam. We are running without it and it will hopefully be fixed on the Aug. 4 maintenance day.
These electrical issues bear some resemblance to those with Ta61, but I don't think we ever determined the cause there. |
Wednesday, January 19, 2022, 09:00, Frank Song, North Hot-Cell, Standard Operation, TM4, Ta #63, Electrical check on TM4 at NHC without target 
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David did electrical check after target removed from TM4 at NHC. see attachment pls. |
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Thursday, November 12, 2015, 13:25, Anders Mjos, Conditioning Station, Standard Operation, TM3, FEBIAD Test Target, Electrical check and leak check
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Target to Anode and target to Common showed ~ 500 kOhm values. No leaks above 3E-9 atm-cc/s seen. See attached. |
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Monday, November 16, 2015, 10:09, Anders Mjos, Conditioning Station, Standard Operation, TM3, FEBIAD Test Target, Electrical check after HV conditioning
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Problem found between ANODE (F) and chassis 90 kOhm. See attachment for details. |
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Tuesday, July 19, 2011, 12:02, Travis Cave, South Hot-Cell, Standard Operation, TM4, Ta#36, Electrical check
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See attached PDF for the details. |
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Thursday, July 28, 2011, 12:02, Travis Cave, South Hot-Cell, Standard Operation, TM1, Ta#37, Electrical check
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TM#1 has passed the the electrical check. |
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Monday, October 03, 2011, 14:52, Travis Cave, South Hot-Cell, Standard Operation, TM1, TaC#1, Electrical check
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TM#1 with TaC#1 installed passed the electrical test. With a value of 882MOhms that was meggered from the heat shield to the chassis, all other measurements are within spec. |
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Tuesday, October 25, 2011, 08:47, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#26 High Powered, Electrical check
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TM#4 with SiC#26 HP has been checked electrically it has passed. It was noted that the Megger check of the Oven to Chassis (earth ground) and Oven to 60kV Common is low but will not hinder running, according to Don Jackson. Also yesterday the transition piece that sits on the 55 pin connector was damaged from excessive handling, it was removed and repaired and it now back in place. |
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Friday, November 18, 2011, 09:44, Travis Cave, South Hot-Cell, Standard Operation, TM1, UCx#3, Electrical check
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Electrical checks of TM#1 with UCx#3 have been completed. They all appear to be with in operational range. All megger checks were done at 500 volts. See attached file for details. |
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Thursday, April 19, 2012, 09:36, Travis Cave, South Hot-Cell, Standard Operation, TM1, Nb#6, Electrical check
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Electrical check has been completed of TM#1 with Nb#6 attached. Our new micro-ohm meter was also used for the first time for this test. |
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Tuesday, May 15, 2012, 11:45, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#26, Electrical check
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Results of the electrical check of TM#4 with SiC#26 attached post beam. |
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Friday, May 18, 2012, 08:29, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#27, Electrical check
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TM#4 with SiC#27 has had its electrical check. See attached PDF for details. |
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Tuesday, May 22, 2012, 08:33, Travis Cave, Conditioning Station, Standard Operation, TM4, SiC#27, Electrical check
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Electrical check of TM#4 with SiC#27 under vacuum at that conditioning station. See attached PDF for details. |
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Monday, June 11, 2012, 14:14, Travis Cave, Conditioning Station, Standard Operation, TM1, Ta#38, Electrical check
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Electrical check of TM#1 with Ta#38 at the conditioning station under vacuum. See attached file for details. |
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Wednesday, July 04, 2012, 11:33, Travis Cave, South Hot-Cell, Standard Operation, TM4, UO#3, Electrical check
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Electrical check of TM#4 with UO#3 attached at the south hot cell see attached PDF for full results. It has been noted that the Anode to 60kV common is of a low value after consulting with Friedhelm Ames it was determined will will run with what we have. |
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