 Tuesday, July 03, 2012, 09:23, Friedhelm Ames, , , , , , , In progress, start up again
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purged Ne line and started cathode heater ramp up to 295 A |
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Tuesday, July 03, 2012, 19:05, Friedhelm Ames, , , , , , , Problems/Solutions, short in anode
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A short in the anode has developed during the heater ramp up. Increasing the current limit did not cure it. Start heater ramp down to investigate. |
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Wednesday, July 04, 2012, 09:22, Friedhelm Ames, , , , , , , Problems/Solutions, turbo pumps stopped
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turbo pumps stopped to prepare for venting for anode short investigation. |
 Wednesday, July 04, 2012, 13:07, Anders Mjos, , , , , , , Problems/Solutions, water lines purged
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| Friedhelm Ames wrote: |
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turbo pumps stopped to prepare for venting for anode short investigation.
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Wednesday, July 04, 2012, 13:07: Water lines purged |
Wednesday, July 04, 2012, 15:33, Anders Mjos, , , , , , , Problems/Solutions, short in anode 
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| Friedhelm Ames wrote: |
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A short in the anode has developed during the heater ramp up. Increasing the current limit did not cure it. Start heater ramp down to investigate.
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Wednesday, July 04, 2012: short found between anode and target. probably caused by the target tube coming in contact with the anode due to bending of the tube caused by heating and deformation of the grid retaining ring. see attachements |
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Thursday, July 05, 2012, 10:59, Friedhelm Ames, , , , , , , Problems/Solutions, water tripping in front of HV power supplies
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Found some water tripping in front of the high voltage power supplies rack from the water lines at the ceiling. Plastic sheets have been put on top of the racks and MCR has been informed. |
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Thursday, July 05, 2012, 11:00, Friedhelm Ames, , , , , , , In progress, source started up again
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tube heater ramping started |
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Thursday, July 05, 2012, 18:02, Friedhelm Ames, , , , , , , Problems/Solutions, fluctuations in magnet current
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The current at the magnet power supply TMS:MB1 shows fluctuations every 1-2 minutes. The same can be seen in the Hall probe read back and in the beam current at Fc6. |
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Thursday, July 05, 2012, 18:10, Friedhelm Ames, , , , , , , Problems/Solutions, fluctuations in magnet current
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| Friedhelm Ames wrote: |
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The current at the magnet power supply TMS:MB1 shows fluctuations every 1-2 minutes. The same can be seen in the Hall probe read back and in the beam current at Fc6.
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a fault report has been issued to power supplies group. Dan Louie will look into it. |
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Friday, July 06, 2012, 11:04, Friedhelm Ames, , , , , , , , source tripped off over night
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A big vacuum excursion tripped the source off at about 1am. The vacuum did not fully recover afterwards only down to about 1.3e-6T. Ne leak has been closed and vacuum went down to 6e-7T within a few minutes. After the trip the current of the magnet stayed constant. Fluctuations may have been caused by high voltage sparks. |
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Friday, July 06, 2012, 11:05, Friedhelm Ames, , , , , , , , start source again
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heater ramping up again with Ne leak closed. |
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Friday, July 06, 2012, 11:18, Friedhelm Ames, , , , , , , , TSG:TP1B off source off again.
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turbo pump TSG:TP1B has tripped off. Cannot be restarted. Fault report to vacuum. Everything switched off again
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Friday, July 06, 2012, 15:36, Friedhelm Ames, , , , , , , Done, switched everything off
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switched everything off to prepare for scheduled power outage on Monday |
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Monday, July 09, 2012, 11:14, Aurelia Laxdal, , , , , , , , Test Stand status
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Restarted the PC at the Test Stand.
Restarted the Archivers; currently pumping down the separator area. |
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Monday, July 09, 2012, 12:57, Anders Mjos, , , , , , , Done, Vented
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Tuesday, July 10, 2012, 16:01, Anders Mjos, , , , , , , Problems/Solutions, Turbo replaced - cleaning chamber recommended
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A new turbo has been installed. Eddie said the other one had crashed but not catastrophically. He recommends the test stand be wiped clean before pumping because there is a fine layer of Aluminum dust on the chamber base.
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Wednesday, July 11, 2012, 11:16, Anders Mjos, , , , , , , In progress, Pumping down - with new turbo pump
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Wednesday, July 11, 2012, 15:30, Anders Mjos, , , , , , , Problems/Solutions, Restarting turbos after power bump
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Wednesday, July 11, 2012, 15:27: Started TSGTP1A and 1B
Wednesday, July 11, 2012, 15:31: Started TSMTP2 and 6
Wednesday, July 11, 2012, 15:33: TMS tubos at speed. Vacuum 4.8E-7
Wednesday, July 11, 2012, 15:34: TSG turbos at speed. Vacuum 9.5E-6 |
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Thursday, July 12, 2012, 09:05, Anders Mjos, , , , , , , Problems/Solutions, Shut down TSGTP1A - bearing noise
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Shut down TSGTP1A due to noise (possibly from bearings) after consulting Edi. |
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Thursday, July 12, 2012, 09:44, Anders Mjos, , , , , , , In progress, Venting
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System will be vented and gas lines purged with air, then nitrogen.
Thursday, July 12, 2012, 09:43: Shut down TSGTP1B. |
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