Production of Sinner layer of Si-Tracker 1996 DELPHI 96-38 MVX 12

The DELPHI silicon microvertex detector is being upgraded for 1996. To improve the forward coverage there will be two layers of pixel detectors and two lanes of mini strips detectors on each side of it. In the barrel region the Outer and Inner layers will have their lengths increased and the Closer, which was already a longer layer, will remain unchanged. To avoid confusion with the old detector, the layers of the new Si-tracker are called Scloser, Souter and Sinner. The aim of this note is to fully describe the process of production of Sinner modules. In the second section the layer itself is described, the third gives an overview of the assembly and the fourth explains the test procedures. Finally, the fifth section makes a summary of the results obtained. (author)