This script lives in /reg/g/psdm/tutorials/examplePython/epics.py. The LCLS DAQ includes many slowly changing quantities (e.g. voltages, temperatures, motor positions) that are recorded with software called EPICS.
from psana import * ds = DataSource('exp=xpptut15:run=59:smd') epicsVarFullName = Detector('HX2:DVD:GCC:01:PMON') epicsVarAlias = Detector('SampleTemp_GetA') for nevent,evt in enumerate(ds.events()): print epicsVarFullName(evt) print epicsVarAlias(evt) break
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