epicsdev_daq_caen_dt5202

EPICS PVAccess server for the CAEN DT5202 SiPM DAQ.

The server watches an input directory for CAEN run-list files (for example RunXXX_list.txt), parses and accumulates trigger data, publishes PVs, and then moves processed files to an output directory.

Features

• File-system watcher for incoming run-list files
• Per-run waveform statistics for board 0 channels:
  • b0LGMean, b0LGRMS, b0LGP2P
  • b0HGMean, b0HGRMS, b0HGP2P
• Run metadata PVs:
  • run
  • runStartTime
• Optional plugin support (default: beamloss) for custom PVs and processing

Requirements

Python 3.10+, epicsdev>=3.0.1, numpy, watchdog

Installation

Install from source in editable mode:

pip install -e .

Running the server

After installation, use the console script:

epicsdev_caen_dt5202 01

Equivalent module form:

python -m epicsdev_caen_dt5202 01

For instance=01, the default naming becomes:

• Input directory: dataIn_01
• Output directory: dataOut_01
• PV prefix: dt5202_01:

Common options

-a, --accumulate      Events to accumulate per run (default: 1e6)
-i, --inDir           Input directory base name (suffix _<instance> is added)
-o, --outDir          Output directory base name (suffix _<instance> is added)
-p, --plugin          Plugin module name (default: beamloss)
-v, --verbose         Increase verbosity (-vv for more)
instance              Required instance id, e.g. 01

Example:

epicsdev_caen_dt5202 -i /data/janus/in -o /data/janus/out -p beamloss -vv 01

This watches /data/janus/in_01, moves processed files to /data/janus/out_01, and publishes PVs with prefix dt5202_01:.

Plugin: beamloss

The default plugin epicsdev_caen_dt5202/beamloss.py computes additional beam-loss-related PVs from sensor groups (J3/J4/J5 layouts), including shuffled sensor arrays and polar projection data used by OPI views.

OPI screens

OPI files and scripts are in the opi/ directory.

Examples for Tandem Diagnostic Box plane J3: