FELIX Basics

FELIX application

The FELIX server application is in charge of managing the data received over point-to-point links from the WIBs and to dispatch the data to the appropriate Board Reader applications. It runs on np04-srv-019 and np04-srv-020.

In order to monitor the functioning of the FELIX applications you can look at the supervisord output via a browser (http://np04-srv-019[20].cern.ch:9001). If the application is not running you can try to start if from the browser. If this fails, call an expert.

Board Reader

The Board Readers for FELIX receive data from one WIB link each (2 FEMBs) and store them until an event building request arrives. The timestamp in the request is used to identify the WIB frames that need to be aggregated into a DAQ fragment and sent to the event builder. Optionally raw data can be compressed before being packed into a DAQ fragment. The Board Readers for FELIX run on np04-srv-017 and np04-srv-018.

More Information

The FELIX general users manual can be found here.

-- GiovannaLehmannMiotto - 2018-02-13

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Topic revision: r7 - 2018-08-26 - GiovannaLehmannMiotto
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