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Custom control hardware and DIM: a case study. R. Fantechi 6/4/2011. The problem. Custom monitoring hardware developed for NA48 Measurement of voltages at the end of the distribution chains Measurement of currents in each chain Implementation - PowerPoint PPT Presentation
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Custom control hardware and DIM: a case study
R. Fantechi6/4/2011
The problem• Custom monitoring hardware developed for NA48
– Measurement of voltages at the end of the distribution chains
– 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
R. Fantechi - 11/12/2009
The monitoring system
R. Fantechi - 11/12/2009
Voltage and current measurements
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