1. 11/30/20151Robin Lafever The existing 300 K Flange This is certainly an older version but is useful to illustrate The proposed modifications

2. 11/30/20152Robin Lafever 300 K Flange with cryostat As is currently appears in our CAD model

3. 11/30/20153Robin Lafever 300 K Flange with cryostat As is currently appears in our CAD model Here are my interpretations of the Suspension rods.

4. 11/30/20154Robin Lafever 300 K Flange, MODIFIED Note: 6 suspension rods are shown in accordance with yesterdays phone conversation. The rods are clocked 30 degrees to avoid interference with other hardware on the Flange The radius is arbitrary, at the moment, but we need enough radial space to accommodate Hangers, Adapter flanges, and Lift-cable feed-throughs.

5. 11/30/20155Robin Lafever 300 K Flange, MODIFIED An adapter Flange is added to allow installation of the Radon Barrier The adapter could be mounted on the Top or Bottom, both work.

6. 11/30/20156Robin Lafever 300 K Flange, MODIFIED The Radon barrier is installed. In addition to a radon barrier, this also provides vibration isolation. The outer edge mates to the Clean Room Radon barrier. This needs to be on the plane shown to allow installation of the Farraday cage connection to the Lead Shield, below.

7. 11/30/20157Robin Lafever 300 K Flange, MODIFIED In addition, feed-through assemblies are required for the Lifting assembly. The radial position and feed-through details are not known at the moment, but this treatment shows Radon Seals and cables inside the adapter flange.

8. 11/30/20158Robin Lafever 300 K Flange, MODIFIED Bottom view Note that the Suspension assemblies Are potential Radon leaks and need seals. The details are not known to me, however, I Show an assembly that could incorporate O-ring packing glands.

9. 11/30/20159Robin Lafever Top section view showing Suspension hardware, Cable feed-throughs, and the adapter Flange with Radon Barrier/vibration isolator Note that the feed-through will need some radial space, TBD.

10. 11/30/201510Robin Lafever Bottom section Again, note that the suspension Hardware needs a Radon seal Again, this is a potential Radon leak And will need some kind of seal. I do not know what the actual details are.