DAE
The data acquisition electronics is a combination of hardware and software used to histogram neutron event data. 2-dimensional He3 neutron detectors encode their data in the form (x,y,t). The event information is histogrammed and stored along with the configuration of the instrument in a NeXus file. Data reduction and data analysis is then carried out on these files using NeXus enabled programs.
The design includes:
- A common time-stamping card for Brookhaven National Laboratory and Ordela detectors
- A common time-stamping card for Denex delay line detectors
- The time-stamping cards communicate (x,y,t) data via the PCI bus to PC memory
- Event data is histogrammed by code written in C, running on an x86-64 processor on Linux
- The histogram is served to clients via http