1G.Barber: Mice Collaboration Meeting 29 March 2003

Plans for Sci-Fi Prototyping.

Contents:-

Mechanical Layout of Sci-Fi

Design of the Single Stage

Design Issues Still to be Addressed

Future Plans

This work is being undertaken by Imperial College and Liverpool

University physics Department (Peter Cooke), Fermilab (Alan

Bross),

KEK (Koji Yoshimura), Osaka (Yoshi Kuno, Akiro Sato)

2G.Barber: Mice Collaboration Meeting 29 March 2003

Mechanical Layout of Sci-Fi

The aims of the Single stage prototype will be to:-

Prove the feasibility of the design

Solve any production problems

Try to develop more efficient (and cheaper if possible)

construction techniques

Ensure that all stages can be made exactly the same

Test the efficiency of the light guide connectors

Check the spatial repeatability of the support system

To create a working detector to allow full system

functionality to be developed

3G.Barber: Mice Collaboration Meeting 29 March 2003

Mechanical Layout of Sci-Fi

Layout

4G.Barber: Mice Collaboration Meeting 29 March 2003

Mechanical Layout of Sci-Fi

Main Criteria for Material Selection

•Low Xo

•Non Metallic

•Stable

•Manufacturability (preferably in-house)

•Cost

5G.Barber: Mice Collaboration Meeting 29 March 2003

Mechanical Layout of Sci-Fi

Layout of the 5 Stages

6G.Barber: Mice Collaboration Meeting 29 March 2003

Mechanical Layout of Sci-Fi

Other points that need investigation/clarification:-

The question of which end to Multiplex

The ratio of multiplexing (3 or 7 or ?)

How to seal at the flanged bulkhead

The best way to install and align

7G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

The aim, as already stated, is to have all the stages the same. This means that there is only one development programme.

Further advantages are:-

that the amount of spares can be minimum

All stages are interchangeable should it be

necessary to fit a less efficient stage in a less critical

position

Production will be easier

8G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

Basic layout of the stage

This exploded diagram shows the components that we use to make up our 1st model

9G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

The Model

This photograph shows the face of the stage. The fibres are ‘plotted’ onto a sheet of paper which is laminated into mylar (much easier than the real thing)

10G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

The Model take 2

This photograph shows the rear face of the stage. The fibres come around the radius guide and are made off into connectors

11G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

The Model take 3

This photograph shows a side elevation and allows us to see the radius guides.

12G.Barber: Mice Collaboration Meeting 29 March 2003

Design of the Single Stage

What have we gained from the model?

A better ‘Feel’ for the stage and how to handle

it

A list of improvements that need to be made

A tool for discussing the material choices and

the manufacturing feasibility

A way to enable us to visualise the support

structure required and where it can be

attached

13G.Barber: Mice Collaboration Meeting 29 March 2003

Issues Still to be Addressed

As it is early days this is quite a long list so I will mention only the main items. I am sure that other items will come to light as the design evolves and being an optimist, some may go away.

Detailed design and manufacture of the stages

How to lay down the fibres to a known accuracy

Detail of the connectors

Multiplexing

Fixing and sealing into position

…………………

14G.Barber: Mice Collaboration Meeting 29 March 2003

Future Plans

To refine and build a new mechanical model

incorporating changes

To start the design and development of the

tooling for the carbon-fibre structures

To develop a reliable fibre-optic connector

To develop assembly and installation procedures

???