Mechanical Design and Construction

Mechanical Design

This is a possible 12-fold layout which we are mocking up in order to test the design and its installation.

(This drawing appears truncated when ghostviewed... but it prints out correctly.)

The placement of the hybrids on the narrow and wide part of the beam, can be seen in this drawing, where the necessary cable lengths are indicated.

Mechanical Construction

We have started to construct a mockup of the project which will consist of

  • A beam pipe
  • The inner sleeve of SVX2
  • Two clam-shells which encompass the beampipe
  • Ladders of silicon which sit on the clam-shells
  • Hybrids

    The beampipe is mounted on a baseplate, and the inner sleeve of SVX2 is free to slide along, thus allowing us to check clearances.
    The clam-shells which would be made of carbon fibre and of length 45cm, are simulated by a series of precision cut aluminium half-rings, 1.5cm long. The holes in the rings are for cooling pipes.
    The silicon ladders are simulated by 300 micron thick aluminium strips on which are glued small aluminium bumps to simulate the bond-wire heights.
    The hybrids are simulated using 500 micron thick aluminium representing the substrate with 2.0 mm high aluminium on top representing the components. Slots are cut in the baseplate to allow cables to come up from underneath. Our next task is to simulate the cable stacks using kapton.
    The ladders and cables will be mounted on the clam-shells which will be placed around the beampipe.

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