The Data Acquisition and Monitoring System HOOPSY at the Heavy Ion Accelerator VICKSI

An integrated data acquisition system for Nuclear Physics experiments is described. Two PDP11/70 - PDP11/40 systems with a sophisticated ADC Interface for 16 Single NIM ADC's are used for data taking and monitoring. The multi-tasked software provides real-time control of the experimental data by a variety of monitoring routines. A lot of work was done to introduce data formats common to all computers within the HMI. Utilities were written to move Raw Data Files and Multi Spectra Files between different media and to inspect these files. The future expansion of the system will be discussed.