Yesterday the cryostat was closed, with some modifications to help reduce microphonics. Preliminary signs (which are hard to determine while warm) are that things remain imperfect, but are quite possibly good enough.
Tyr's Christmas present to himself
Skis, for use in Antarctica. He and Brad left us
Barth
And serial converters
Elio performs arts and crafts
In the JFET cavity
The JFET cavity
After the arts and crafts work on the superinsulation layer
Enzo's turn at arts and crafts
Eccosob layer
This seemed to really help with the noise
The partially closed cavity
With cables all reattached, and the intermediate lid in place
Enzo inspects the half-wave plate
Half-wave plate rotator
Getting an inspection
JFET cavity closed
Fridge with optics box back in place
Obligatory. Also, without the extra strapping from last cooldown
The BOB side
Heat strap and window
Cleaning a superinsulation layer
Taping the last layer closed
Box label unrelated to cryostat
If M Truch ever officially designated a representative, I don't recall. I suppose none of us are allowed to modify the box without him... 🙁
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