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Custom control hardware and DIM: a case study

This case study explores the development of custom monitoring hardware for the NA48 experiment, focusing on voltage and current measurements at the ends of distribution chains. The implemented system features galvanically insulated ADCs and utilizes VME modules for data acquisition. The monitoring software, developed in C++, serves as a DIM server, enabling the publication of 32 voltages and currents. Updates included enhancements for real-time data handling and a transition from LynxOS to Linux, aimed at improving system performance and reliability.

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Custom control hardware and DIM: a case study

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  1. Custom control hardware and DIM: a case study R. Fantechi 6/4/2011

  2. The problem • Custom monitoring hardware developed for NA48 • Measurementofvoltages at the end of the distributionchains • Measurement of currents in each chain • Implementation • Galvanically insulated ADC, referenced to HV line • Sequencer and readout memory as VME modules • + additional VME pieces of any interest for NA62

  3. The monitoring system R. Fantechi - 11/12/2009

  4. Voltage and currentmeasurements R. Fantechi - 11/12/2009

  5. The solution • Standalone readout of the VME hardware • Implemented in C++ • It is a DIM server • It publishes to PVSS 32 voltages and 32 currents, both in burst and out of burst • Implemented in summer 2010 by Brian O’Connell (George Mason) • Tested and validated up to PVSS • Next update • In burst/out burst now fake implementation • Add a section acting as a DIM client receiving a time message published by a NA62 server • Move from Lynx-OS to Linux • Wait for a new processor, get rid of the old NA48 CPU and file base

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