jack fowler spain workshop 2003 faraday shielding for barrel trt jack fowler duke university spain...
TRANSCRIPT
Jack Fowler Spain Workshop 2003
Faraday Shielding for Barrel TRT
Jack Fowler
Duke University
Spain Workshop - 2003
Jack Fowler Spain Workshop 2003
Inner Cylinder Shielding
Inner cylinder will be coated with copper (35 micron) clad kapton (25 micron) (Total thickness 100 microns)
Due to the material width, there will be 3 separate wraps
The wraps will not overlap
Jack Fowler Spain Workshop 2003
1st Prototype of Cylinder
Epoxy (AY 103 / HY 991) will be applied to the surface of the cylinder at an average thickness of 100 microns
We have measured a total thickness of epoxy and shielding material of 250 to 300 microns
Jack Fowler Spain Workshop 2003
Epoxy Application
Jack Fowler Spain Workshop 2003
Applying Copper/Kapton
Jack Fowler Spain Workshop 2003
Seams between wraps
3M Copper EMI Shielding Tape 1181 will be used to cover the seams of the wraps (66 microns thick total and 35 micron copper)
The tape will be spot soldered at the joint to the shield. This will be done approximately every 20 cm along the length.
Jack Fowler Spain Workshop 2003
Cylinder with Shield
Jack Fowler Spain Workshop 2003
Inner Cylinder Summary
Kapton coated copper will be epoxied onto the cylinder
The seams will be covered using copper tape. These joints will also be soldered. Maximum thickness should not exceed 350 to
400 microns. We have 1 mm.
Jack Fowler Spain Workshop 2003
Space Frame Shielding
The complete outer surface of the space frame will be covered with 3M Embossed Copper Foil Shielding Tape 1245 without tin plating (shown is tin plated) 100 microns thick / 35 micron Cu
The cooling tube corners will not be covered
Jack Fowler Spain Workshop 2003
Tape coverage
~18 mm of the space frame in Z will be covered.
The edge of the tape and frame will be coated with epoxy (AY103 /HY991) to prevent peeling
Jack Fowler Spain Workshop 2003
Soldered Joints
All of the intersection points of the tape pieces will be spot soldered to ensure a long term electrical connection
Jack Fowler Spain Workshop 2003
Joining the Inner Cylinder to Space Frame
The cylinder shielding will be applied within 0.5 mm of the area the space frame will occupy.
Soldered connection will be made for each 1/32
Jack Fowler Spain Workshop 2003
Space Frame Summary
Embossed Bare Copper tape will be used to shield the space frame
The inner cylinder will be connected to the space frames by soldered connections.
Jack Fowler Spain Workshop 2003
Outer Cylinders
The outer cylinder will be covered with the same copper/kapton material on the outer surface.
The connection to the will most likely be made using tape around the outer corner.