 Thursday, June 28, 2012, 17:18, Pierre Bricault, , LP-FEBIAD, , , , , In progress, Leave the cathode heater at 275 A overninght.
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Friday, June 29, 2012, 08:57, Pierre Bricault, , LP-FEBIAD, , , , , In progress, Continue cathode heating
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This morning the pressure was 3.5E-7 T. Current at 275 A is 30nA.
Continue cathode heating to 290 A during meeting.
Start seeing some electron current from the cathode around 275 A. |
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Friday, June 29, 2012, 13:39, Friedhelm Ames, , , , , , , , start mass scan
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| start mass scan to do new mass calibration |
Friday, June 29, 2012, 15:02, Friedhelm Ames, , , , , , , , mass scan finished 
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mass spectrum saved as
plotdump-local-clean.txt_Jun29_12_14-55-43.txt
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Friday, June 29, 2012, 15:03, Friedhelm Ames, , , , , , , , start ramping down heater
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 Friday, June 29, 2012, 16:39, Friedhelm Ames, , , , , , , , mass scan finished
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Friedhelm Ames wrote:
mass spectrum saved as |
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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. |
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Wednesday, July 04, 2012, 13:07, Anders Mjos, , , , , , , Problems/Solutions, water lines purged
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Friedhelm Ames wrote:
turbo pumps stopped to prepare for venting for anode short investigation. |
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Wednesday, July 04, 2012, 15:33, Anders Mjos, , , , , , , Problems/Solutions, short in anode
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Friedhelm Ames wrote:
A short in the anode has developed during the heater ramp up. Increasing the current limit did not cure it. Start heater |
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Wednesday, July 04, 2012, 15:37, Anders Mjos, FEBIAD anode end cap test, , , , , , In progress, Pumping down
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Replaced grid containing ring (target side) with new ring. No contact between target and anode measured in lab.
NOTE: While closing up the VCR fittings the tube rotated causing the tube to flatten in a bend. This may reduce water flow on the heat shield circuit.
(see attachment) |
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Thursday, July 05, 2012, 08:41, Anders Mjos, FEBIAD anode end cap test, , , , , , In progress, Water opened - reduced flow heat shield
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Anders Mjos wrote:
Replaced grid containing ring (target side) with new ring. No contact between target and anode measured in lab. |
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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:
The current at the magnet power supply TMS:MB1 shows fluctuations every 1-2 minutes. The same can be seen in the Hall |
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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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