Module assembly

The silicon sensor(s), and the electronics hybrid of the 15,851 detector modules of the CMS Silicon Tracker are glued on a frame equipped with a kapton bias, using a gantry robot. This allows to reach the required positionning precision of ~10 µm in x and y coordinates and ~4 mdeg in the angle of the detector strips alignment. The IIHE is equipped with such a gantry being able to assemble TEC modules for rings 3, 5 and 6 (see below). It is foreseen to assemble ~1500 modules at the IIHE, ~1100 being already built by the end of December 2005..

The electronic box seen in the right lower corner of the picture has been built at the IIHE for the gantries of the Tracker collaboration. It maps and controls the valves and switches needed for the vacuum system maintaining the elements on the gantry plates.