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Beam Line Data (BLD) is smaller data that can be delivered to all hutches (i.e. not associated with the DAQ system in one hutch). This script lives in /sdf/group/lcls/ds/ana/tutorials/psana1_examples/bld.py. This example includes some of the more common shot information parameters that experiments use.
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from psana import *
"""Beam Line Data is smaller data that can be delivered to all hutches
(i.e. not associated with the DAQ system in one hutch). """
from IPython import embed
ds = DataSource('exp=xpptut15:run=59:smd')
ebeamDet = Detector('EBeam')
gasDet = Detector('FEEGasDetEnergy')
for nevent, evt in enumerate(ds.events()):
ebeam = ebeamDet.get(evt)
gdet = gasDet.get(evt)
if ebeam is None or gdet is None: continue
print('Photon Energy and Charge:',ebeam.ebeamPhotonEnergy(),ebeam.ebeamCharge())
print('Gas detector energy values, 2 pre-attenuator, 2 post-attenuator:',gdet.f_11_ENRC(),gdet.f_12_ENRC(),gdet.f_21_ENRC(),gdet.f_22_ENRC())
break |
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