 Monday, May 27, 2013, 16:07, Bevan Moss, Conditioning Station, Standard Operation, TM4, Ta #40, HV conditioning
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The HV conditioning reached a maximum of 44kV today before a spark took out the canbus card. I will attach the data once I have had a chance to
format it. |
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Monday, May 27, 2013, 16:01, Bevan Moss, Conditioning Station, Repair, , , CanBUS card
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During HV conditioning of TM4 with Ta#40 there was a spark at ~43 kV that caused the Bias card to "fry". Dave Morris has been contacted
and has said he will replace it tomorrow. |
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Monday, May 27, 2013, 15:59, Bevan Moss, Conditioning Station, Repair, , , Compressor fault
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Once again the 7.5 compressors are tripping due to faults. I believe it is due to over pressure as a result of the chiller fans not coming on.
I have contacted ESC. |
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Monday, May 27, 2013, 11:55, chad fisher, South Hot-Cell, Standard Operation, , , Special Tooling for RFQ target
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The special tool made for the RFQ target autopsy has been inserted into the hot cell.
4-40 button head screws have been successfully lossened. |
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Monday, May 27, 2013, 10:37, Bevan Moss, Conditioning Station, Maintenance, TM4, , Cooling Systems topped off
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Rob walker has flushed and refilled the primary side of the system (note the water still looks nasty). This morning the primary side of system needed
to be bled as there were air pockets. Also TK2 had reached its low point and needed to be topped up. |
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Monday, May 27, 2013, 10:35, Bevan Moss, Conditioning Station, Standard Operation, TM4, Ta #40, Pumps Started HV testing to follow
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| The pumps have been turned on at ~9:30 this morning. Current values are 6.61 Mohm TCS:DIC1 @19.4 C. HV testing will start momentarily. |
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Thursday, May 23, 2013, 14:12, Bevan Moss, Conditioning Station, Maintenance, , , Primary Circuit Drained and Flushed
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Rob Walker has drained the primary side of the conditioning station. It will be flushed, filled and chemically treated. It was desired to
chemically treat the primary side before before but it took so long that sediment was found (things started to grow). |
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Thursday, May 23, 2013, 14:08, Bevan Moss, Conditioning Station, Standard Operation, TM4, Ta #40, Turbo Pumps on
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| The turbo pumps have been turned on and are running |
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Thursday, May 23, 2013, 14:07, Bevan Moss, Conditioning Station, Repair, , , Chiller Unit Repaired
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ESC came today and "repaired" the chiller. There was something wrong with the VFD controller. The were able to get it to start and run
correctly again but were not able to recreate the problem. At this point it appears that it has magically disappeared. |
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Thursday, May 23, 2013, 11:14, David Wang, South Hot-Cell, Standard Operation, TM4, TA#40 , TM4 TA# 40 HS leak check at SHC
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| TM4 Ta#40 HS leak check is done at SHC . No leak has been found so far. There will be a helium pressure test on it at CS. |
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Thursday, May 23, 2013, 09:51, Travis Cave, Conditioning Station, Standard Operation, TM4, Ta#40, module move
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| TM#4 with Ta#40 has been moved from the south hot cell to the conditioning station. |
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Wednesday, May 22, 2013, 14:11, chad fisher, South Hot-Cell, Standard Operation, TM4, Ta#40, Ta#40 installed
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Ta#40 has been installed.
Leak checking and high voltage tomorrow before the move. |
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Wednesday, May 22, 2013, 10:41, Travis Cave, South Hot-Cell, Standard Operation, TM4, SiC#28 (RFQ Target), module move
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| TM#4 with SiC#28 has been moved from the south west silo to the south hot cell. |
Tuesday, May 21, 2013, 11:52, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, May 16th Long HV conditioning 
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On May 16th 2013 the module was HV conditioned all day. As a result the maximum stable voltage has been increased to about 47kV (~4kV more than last
test). A maximum voltage of 49kV was achieved but the module was very unstable. Attached is the data from the testing. Note that occasionally the sparking
caused the PS to reset, it was turned back on and the voltage increased back to what it was (or lower) quickly. |
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Tuesday, May 21, 2013, 11:38, Travis Cave, ITE, Standard Operation, TM4, SiC#28 (RFQ Target), module move
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| TM#3 with SiC#28 (RFQ Target) has been moved from the east target station to the south west silo. |
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Friday, May 17, 2013, 12:02, Travis Cave, Conditioning Station, Standard Operation, TM3, , module move
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| TM#3 with no target or source trays has been moved from the conditioning station to the NE silo. |
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Friday, May 17, 2013, 10:04, chad fisher, South Hot-Cell, Repair, , , Manipulator Repair
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| Manipulator has been sucessfully repaired. Recieved 0.19 mSv. Took Approx. 10-20 minutes |
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Wednesday, May 15, 2013, 18:12, Bevan Moss, Conditioning Station, Standard Operation, TM3, No source tray, HV test repeat
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After discussion with Friedhelm it was decided to continue trying to condition the module today before moving it tomorrow. The voltage was quickly
raised until 40 kV where it was left for ~30 minutes. Sparking was minimal. It was then slowly raised to 44.3 kV it held this voltage for ~8 minutes when
the current started to climb (remained below 200uA as set as a limit in previous tesing). There was also sparking at this point. This continued for ~2.5 |
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Wednesday, May 15, 2013, 17:32, Bevan Moss, Conditioning Station, Standard Operation, TM3, , TM3 in place but not connected
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To confirm that the sparking was coming from the module rather than the conditioning station TM3 was grounded and the conditioning station biased.
Attached are the results. Highlights include that there was no sparking and the station was able to achieve 60kV (limited by controls from going higher).
The current from the raw file has been corrected by the required factor of 5. |
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Wednesday, May 15, 2013, 16:51, Bevan Moss, Conditioning Station, Standard Operation, TM3, No Source Tray, Repeat of HV Test
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The HV test completed on Monday was repeated today over a much longer time period. By taking longer there was slightly less sparking but once again
a maximum voltage of ~44kV was achieved. The resistivity of the water was much higher during this run so the leakage current was less but still in
the >100 uA range. The spark that occurred during the ramp up to the maximum voltage caused the "water resistivity" limit to trip. This was |
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