A transient recorder system for applications in high-rate detector systems WCC 1998

Abstract

Measurements with high-rate two-dimensional imaging gaseous detectors require an adequate data acquisition system which allows to handle and store the detector information. For this purpose, a transient recorder system has been developed and tested at the University of Siegen.In contrast to many today’s systems there is no memory needed to store information which is redundant and not used for the final image reconstruction. Some current applications and measurements of the transient recorder system will be presented. It results that high rates up to 100MHz can be processed without dead time loss at short time scale. However, also the problem of handling the massive data flux in the backend electronics needs to be addressed. Currently the avarage data acquisition time is limited e.g. by the PCI Bus to typically 1–2MHz/4Bytes. Another limitation is the global trigger which has been applied to the system. To solve these problems, some basic ideas about local asynchronous and parallel readout for applications in pixel detectors with big sensitive areas are discussed.