04/18/23 1Robin Lafever

The existing 300 K FlangeThis is certainly an older version but is useful to illustrateThe proposed modifications

04/18/23 2Robin Lafever

300 K Flange with cryostatAs is currently appears in our CAD model

04/18/23 3Robin Lafever

300 K Flange with cryostatAs is currently appears in our CAD model

Here are my interpretations of the Suspension rods.

04/18/23 4Robin 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.

04/18/23 5Robin 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 .

04/18/23 6Robin 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.

04/18/23 7Robin 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 RadonSeals and cables inside the adapter flange.

04/18/23 8Robin Lafever

300 K Flange, MODIFIED

Bottom view

Note that the Suspension assembliesAre potential Radon leaks and need seals.

The details are not known to me, however, IShow an assembly that could incorporate O-ring packing glands.

04/18/23 9Robin 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.

04/18/23 10Robin Lafever

Bottom section

Again, note that the suspensionHardware needs a Radon seal

Again, this is a potential Radon leakAnd will need some kind of seal.I do not know what the actual details are.