Meeting with them on planned for Thursday, May 4th. Prototype II endplates Discussion of fabricating and machining CF shaped endplates for the next prototype, of approximate dimension 19.5in x 10.5in. Shaped endplates will be matched to the production readout cards and HV distribution network. System test of feedthroughs, CF and actual cell design critical validation of design. Material required approximately 25lbs, not sure whether FRE has enough in house.
Mandrel is a special design with attention to placement of vacuum ports.
Consideration of endplate plus mounting shell all in CF rejected in favour of machined aluminum plate plus connection mated to CF conic section. Present thinking on the inner tube is to go from a solid 3x0.005in-ply solution to 2x2x0.0035in skins on a rohacell core. Christine Smith is presently doing conceptual engineering on the outer shell. Alternative possibility of using indexing on a smaller range CNC raised. Local enquiries in SFO area suggest availability of suitable CNC not an issue.