 Tuesday, June 26, 2012, 18:04, Anders Mjos, FEBIAD anode end cap test, , , , Tube only, 38307-9, In progress, FEBIAD anode end cap test - ready
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Testing FEBIAD anode end cap as per dwg ITD0304 REV C
Target with TUBE ONLY. Do not use target heater.
Tuesday, June 26, 2012, 18:03: Roughing
Tuesday, June 26, 2012, 18:24: Turbos started
Tuesday, June 26, 2012, 18:31 : Turbos at speed. Vacuum at 1.8E-5
Wednesday, June 27, 2012, 08:48: Cooling opened. Vacuum stable at 4.2E-7. Ready for testing.
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Tuesday, June 26, 2012, 18:30, Anders Mjos, , , , , , , Problems/Solutions, Crack in source tray insulator 
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A crack in the insulator ITD0054 was observed while mounting the target assembly. See attachment. |
 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 |
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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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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)
Wednesday, July 04, 2012, 15:33: Started roughing.
Wednesday, July 04, 2012, 15:57 : Started turbos
Wednesday, July 04, 2012, 16:03: Turbos at speed. Vacuum at 3E-5 |
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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: |
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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)
Wednesday, July 04, 2012, 15:33: Started roughing.
Wednesday, July 04, 2012, 15:57 : Started turbos
Wednesday, July 04, 2012, 16:03: Turbos at speed. Vacuum at 3E-5
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Thursday, July 05, 2012, 08:39: Water supply open. Vacuum stable at 5.9E-7. Due to the kink in the heat shield cooling line, flow in the heat shield line is lower than other lines (visually inspecting speed of paddle wheels). |
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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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Thursday, July 12, 2012, 12:23, Anders Mjos, , , , , , , Done, TSH:SV5 bypass on
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Thursday, July 12, 2012, 15:48: bypass removed |
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Thursday, July 12, 2012, 13:41, Anders Mjos, , , , , , , Done, purging gas lines with air
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- gas lines purged with air for 60 min (through TSHUHV1 and TSHSV4).
- gas line allowed to fill with nitrogen to 300 torr and evacuated. repeated 3 times.
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Thursday, July 12, 2012, 13:49, Anders Mjos, , , , , , , Problems/Solutions, Aluminum oxide found inside TSHSV1
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Aluminum oxide found inside TSHSV1 and the copper line to TSHUHV1.
SV1 replaced and copper line cleaned. |
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Thursday, July 12, 2012, 15:49, Anders Mjos, , , , , , , , test stand vented for TP1A replacement
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see e-fault 6142 |
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Monday, July 16, 2012, 15:46, Anders Mjos, , , , , , , In progress, Pumping down
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Monday, July 16, 2012, 15:11: Roughing.
Monday, July 16, 2012, 15:38: Turbos started.
Monday, July 16, 2012, 15:46: TSGTP1B at speed TSGTP1A timeout.
Monday, July 16, 2012, 15:54: Both turbos at speed. Vacuum 3.6E-5.
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Tuesday, July 17, 2012, 10:10, Anders Mjos, , , , , , , Problems/Solutions, Gas lines leak checked - air supply leak on manifold
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Leak found on the Ne supply line. 1E-4 - 1E-5 range. Replaced fittings. Had to use one brass piece. Leak rate 6E-9 (probably due to Ne response). No response to He.
Leak rate around low E-8 with regulation valve open.
When closing the HV rack, an air supply leak developed on the manifold for the valves. Shut off air supply. Valves still operational, but requires opening up air supply to actuate.
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Wednesday, July 18, 2012, 14:08, Anders Mjos, , , , , , , Problems/Solutions, Air supply leak on manifold fixed
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| Anders Mjos wrote: |
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Leak found on the Ne supply line. 1E-4 - 1E-5 range. Replaced fittings. Had to use one brass piece. Leak rate 6E-9 (probably due to Ne response). No response to He.
Leak rate around low E-8 with regulation valve open.
When closing the HV rack, an air supply leak developed on the manifold for the valves. Shut off air supply. Valves still operational, but requires opening up air supply to actuate.
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With the help of Rick, the leak was fixed.
The vacuum pump for the gas lines was removed for repairing the leaking hose. |
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Thursday, July 19, 2012, 08:42, Anders Mjos, , , , , , , Problems/Solutions, Leak checking source chamber - leak found on front door
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Due to high vacuum a leak check will be done on the system.
Thursday, July 19, 2012, 09:00 : Base leak rate 4E-9 atm-cc/sec
Thursday, July 19, 2012, 09:07: Leak detected on side door. Mid 1E-8 range.
Thursday, July 19, 2012, 09:08: Leak detected on front door. Mid 1E-6 range. Main leak left or bottom side.
Thursday, July 19, 2012, 09:20: Leak on side door could not be reproduced. Previous response possibly due to "cross-talk" with front door. |
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