There are two Si detectors, R and Phi.

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The design of the Si is in the hands of the Department of Physics 
at the University of Liverpool

Space between Si and secondary vacuum foil	Proposal of a protector between the two Si layers in one Module
postscript file PDF file	postscript file PDF file

Boundary conditions to the Silicon to fit into the Secondary Vacuum Foil Revision C last update 24-7-2003	problems
Revision C:postscript file / PDF file Revision B:postscript file / PDF file	postscript file PDF file