MICE CM 30 Meeting University of Oxford He

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MICE - CM 30 Meeting University of Oxford He / vacuum window Tim Hayler,

MICE - CM 30 Meeting University of Oxford He / vacuum window Tim Hayler, Eddie Holtom STFC, RAL

This slide originally presented at the Muon Collider Collaboration Meeting Berkeley, Oct 2002 Design

This slide originally presented at the Muon Collider Collaboration Meeting Berkeley, Oct 2002 Design guide for windows, Wing Lau and Stephanie yang, University of Oxford The design of the bellow window is such that it is possible to scale the standard design linearly to suit any window dimension and still keeping the same pressure rating, i. e. burst pressure at 120 psi. Here is the design table that we have devised to provide the Window designer with a set of concave and convex radii and centre coordinates that will guarantee the required pressure rating. Profile of the He / vacuum window taken from this spreadsheet, 120 psi burst pressure means factor of safety is high at 8, more analysis could reduce the window thickness.

He / vacuum window extends inside the bore Between the matching coils 1 and

He / vacuum window extends inside the bore Between the matching coils 1 and 2

Vacuum window assembly made of two parts, requires a welded seam around the diameter

Vacuum window assembly made of two parts, requires a welded seam around the diameter OD 375 mm ID 365 mm Welded seam on diameter

Vacuum window profile

Vacuum window profile

AFC Safety window

AFC Safety window

AFC safety window Ø 320 Absorber safety window thickness against radial distance from centre

AFC safety window Ø 320 Absorber safety window thickness against radial distance from centre 1. 6 1. 4 Window thickness (mm) 1. 2 1 0. 8 Series 1 0. 6 0. 4 0. 2 0 0 20 40 60 80 100 120 Distance from window centre (mm) 140 160 180

He / Vacuum window profile Ø 365 Coordinates [Xi, Yi] at the window convex

He / Vacuum window profile Ø 365 Coordinates [Xi, Yi] at the window convex and the concave surfaces 180 170 Window profile coordinates Yi (mm) 160 150 140 Series 1 Series 2 130 120 110 100 0 20 40 60 80 100 120 140 Radial distance from window centre coordinates Xi (mm) 160 180 200

He / Vacuum window Ø 365 Window thickness against radial distance from the window

He / Vacuum window Ø 365 Window thickness against radial distance from the window centre 1. 6 1. 4 Window thickness (mm) 1. 2 1 0. 8 Series 1 0. 6 0. 4 0. 2 0 0 20 40 60 80 100 120 140 Radial distance from window centre (mm) 160 180 200

Technical board please confirm that: • The OD at 375 mm is OK ?

Technical board please confirm that: • The OD at 375 mm is OK ? • The ID at 365 mm is OK ? • The depth of the window profile into the bore at 285 mm is OK ? • The window thickness is OK ?

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