Production test of microstrip detector and electronic frontend modules for the STAR and ALICE trackers

A compact front-end microstrip detector module has been designed and prototyped.It includes a Double-Sided (DS) Silicon Strip Detector (SSD) and the related Front End Electronics (FEE) located on two hybrids, one for the N side and one for the P side [1].Bumpless Tape Automated Bonding (TAB) [2], [3], [4] is used to connect the detector to the dedicated ALICE128C FE chip [5], [6],[7] located on the hybrids by means of microcables.These microcables are bent in order to fold over the two hybrids on the DS SSD.This module meets the specifications of two experiments, ALICE (A Large Ion Collider Experiment) at the LHC collider at CERN [8], [9] and STAR (Solenoid Tracker At Rhic) at the RHIC collider at BNL (Brookhaven National Laboratory) [10].This selfconsistent FE module has been tested in the PS and SPS beams at CERN for signal, noise and resolution and in the Vivitron beam for radiation hardness.The related results have been presented [1], [9], [11].At present, the production of these modules is starting for the STAR experiment whereas the corresponding production for ALICE belongs to a near future.Careful controls and tests are essential at each production step as described in this report.