 Tuesday, October 30, 2018, 10:17, Marla Cervantes, UC2, 43044-7 , LP-SIS, In progress, UCx Fully loaded graphite insert thermal test - FL#1 
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 Wednesday, October 31, 2018, 10:30, Marla Cervantes, UC2, 43044-7 , LP-SIS, Problems, UCx Fully loaded graphite insert thermal test - FL#1
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Wednesday, October 31, 2018, 15:23, Marla Cervantes, UC2, 43044-7 , LP-SIS, Done, UCx Fully loaded graphite insert thermal test - FL#1
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| Marla Cervantes wrote: |
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Tuesday, October 30, 2018, 10:12
A new LP-SIS was coated and syntered (e-log 420 Evaporator_2)
The container was loaded with a graphite insert loaded with UCx
Graphite insert + UCx mass = 26.927 g
A current of 440 A TGHT and 230 A TBHT will be inputed to the contianer
IGP1 = 8.72e-7 Torr
The current was tapped manually to 440 A TGHT and 230 A TBHT (see fig. Heating test)
Maximum pressure during heating = 1.7e-3 Torr.
Target will stay at maximum current for 1 week.
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Wednesday, October 31, 2018, 10:09
The current tripped off, around 5:00 am, the pressure was below 1e-5 Torr (see fig. current-trip_off).
On a previous test, we measured the maximum temperature of the power supply = 33.3 C (e-log 227).
Power supply overheating doesn't seem to be the problem.
EPICS windows are half withe and not answering correctly.
Also, TBHT says that IGP1 < 500 mTorr, and its interlock needs reset (see figure EPICS). |