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 Tyr's Christmas present to himself • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650926650/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8142/7650926650_535789d445_m.jpg)
Tyr's Christmas present to himself
Skis, for use in Antarctica. He and Brad left us
![Barth Barth • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650927114/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8028/7650927114_f898a9e067_m.jpg)
Barth
And serial converters
![Elio performs arts and crafts Elio performs arts and crafts • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650929102/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8421/7650929102_b387675111_m.jpg)
Elio performs arts and crafts
In the JFET cavity
![The JFET cavity The JFET cavity • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650927622/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8285/7650927622_611c29aa97_m.jpg)
The JFET cavity
After the arts and crafts work on the superinsulation layer
![Enzo Enzo's turn at arts and crafts • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650928170/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8019/7650928170_b9fa9bfdcf_m.jpg)
Enzo's turn at arts and crafts
![Eccosob layer Eccosob layer • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650928662/" target="_blank">View on Flickr</a>](https://farm8.static.flickr.com/7138/7650928662_c502f76464_m.jpg)
Eccosob layer
This seemed to really help with the noise
![The partially closed cavity The partially closed cavity • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650929488/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8425/7650929488_51999ba263_m.jpg)
The partially closed cavity
With cables all reattached, and the intermediate lid in place
![Enzo inspects the half-wave plate Enzo inspects the half-wave plate • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650930016/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8167/7650930016_8436489a2f_m.jpg)
Enzo inspects the half-wave plate
![Half-wave plate rotator Half-wave plate rotator • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650930650/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8026/7650930650_6e390a0a1a_m.jpg)
Half-wave plate rotator
Getting an inspection
![JFET cavity closed JFET cavity closed • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650931238/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8281/7650931238_d71ab1ba3b_m.jpg)
JFET cavity closed
![Fridge with optics box back in place Fridge with optics box back in place • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650931784/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8164/7650931784_5c4fd501a5_m.jpg)
Fridge with optics box back in place
Obligatory. Also, without the extra strapping from last cooldown
![The BOB side The BOB side • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650932334/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8023/7650932334_573c5a51ec_m.jpg)
The BOB side
![Heat strap and window Heat strap and window • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650932832/" target="_blank">View on Flickr</a>](https://farm8.static.flickr.com/7113/7650932832_e2e5642211_m.jpg)
Heat strap and window
![Cleaning a superinsulation layer Cleaning a superinsulation layer • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650933298/" target="_blank">View on Flickr</a>](https://farm8.static.flickr.com/7262/7650933298_10fe6a4f2e_m.jpg)
Cleaning a superinsulation layer
![Taping the last layer closed Taping the last layer closed • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650933990/" target="_blank">View on Flickr</a>](https://farm8.static.flickr.com/7248/7650933990_a1e0095506_m.jpg)
Taping the last layer closed
![Box label unrelated to cryostat Box label unrelated to cryostat • <a style="font-size:0.8em;" href="http://www.flickr.com/photos/27717602@N03/7650934510/" target="_blank">View on Flickr</a>](https://farm9.static.flickr.com/8019/7650934510_806b7939b6_m.jpg)
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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