Electrical checks done at 77K. No shorts or open connections.
No leak showing up during LN2 blowout.
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Throughput test still shows low mixture throughput < 10 mbar/min. Previous runs have throughput as high as 56 mbar/min at this stage.
Mixture was cryocleaned with last reading of <50 mbar contaminants.
Other suspect is He-trap. Removed trap from slop and warmed it with heat-gun. No visible change in pressure, read on G1(least count ~10 mbar).
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I am continuing another cryoclean and check the throughput tomorrow. I will keep the mixture in the loop after cryocleaning to let it be at 77K.
