MPD DAQ Event Builder

Event Building

1. Receive data from Front-End Electronics
2. Combine individual streams by Global Event Number
3. Buffer events in memory
4. Handle errors and automatically recover
5. Distribute data to Storage, Monitoring, QA

Data Input/Output Interface

1. Input and Output format is MpdDeviceRawDataFormat

2. Transfer media: raw TCP sockets, MpdDaqNetworkPorts

3. No special control channel, data is sent/received as-is

Typical Scenarios

1. Handle all kinds of errors and misbehaving
2. No data loss – save as much as possible
3. Multiple Output Queues – Storage, Histograms, QA

Data Samples

Some real data captures: MpdDaqSampleData

Software

http://afi.jinr.ru/pub/apel/testing/6/x86_64/repoview/mpd-evb.html

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MPD