Preliminary tests of CHIMERA silicon detectors in reverse mode

The design of modern multi-detector arrays for Intermediate Energy Nuclear Physics experiments has to face the problem of the improvement of the Charge and Mass Identification of Heavy and Light Charged Products. We are fixing our attention to the products stopping in the silicon detector that can be identified in mass by measuring Energy and Time of Flight - (E, ToF) technique - and in charge by measuring the Energy and the Rise Time of the signal - (E, RT) technique With this last technique, one of the points of largest physical interest is the minimum energy of the reaction products that allows charge identification. To this purpose we have done some tests, using the ion beam of the Superconducting Cyclotron of Laboratori Nazionali del Sud in Catania, aimed to evaluate the performance of the CHIMERA Silicon detectors in reverse mounting. In this paper we will discuss the experimental results obtained in reverse mounting in a true beam experiment and we will critically analyze the advantages and drawbacks of reverse mounting w.r.t. front mounting, correlating the measured detector properties in terms of physical properties and biasing conditions of the detector itself.