R3

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A description of the Region 3 (RIII) Design for CLAS12

Conceptual Design

Dimensions

Design criteria

The Design Criteria is to develop all the necessary dimensions from the known dimensions.

The known dimensions are

The coordinate system in described in the attached PDF file:Media:CoordingateSystemR3.pdf

Preliminary Design Phase (9/24/07)

Design

Material and cross section of drift chamber frames, endplates, back plates, and nose plates

Wire hole patterns and feedthrough details

Method for attaching/securing wires

Support bracings, if needed

Lifting attachments and supports

Assembly fixture

Mechanical Analysis

Stress and deflection of endplates under gravity loading

Stress and deflection of endplates under wire loadings

Stress and strain of wires due to gravity and tension loadings

Drawings

Vendors

Provide materials

Perform fabrication

R3 status page at JLAB