= MPD DAQ Event Builder =

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

== Data Input/Output Interface ==

 1. Input and Output format is [[MpdDeviceRawDataFormat]]
 1. Transfer media: raw TCP sockets, [[MpdDaqNetworkPorts]]
 1. No special control channel, data is sent/received as-is

== Typical Scenarios ==
[[attachment:Event_Builder_Packet_Flow.png|{{attachment:Event_Builder_Packet_Flow_640px.png}}]]

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

----
[[CategoryMPD|MPD]]