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lclsData.py
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lclsData.py
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# -*- coding: utf-8 -*-
"""
Created on Tue May 6 17:56:30 2014
@author: alindahl
"""
#from setupEnvironment import *
import psana
import numpy as np
EBeamTypeList = (psana.Bld.BldDataEBeamV0,
psana.Bld.BldDataEBeamV1,
psana.Bld.BldDataEBeamV2,
psana.Bld.BldDataEBeamV3,
psana.Bld.BldDataEBeamV4,
psana.Bld.BldDataEBeamV5,
psana.Bld.BldDataEBeamV6)
class LCLSdata:
def __init__(self, config, quiet=True):
self._evt = None
# EBeam
self._EBeamSource = psana.Source('BldInfo(EBeam)')
self._EBeamType = None
self._phaseCavitySource = psana.Source('BldInfo(PhaseCavity)')
# Evr
self._EvrSource = psana.Source('DetInfo(NoDetector.0:Evr.0)')
self._EvrType = psana.EvrData.DataV3
# photon beam
#photonCalib = loadConfig(calibFile, quiet=quiet)
#self._photonA = photonCalib.A
#self._photonB = photonCalib.B
self._photonA = config.lcls_photonEnergyA
self._photonB = config.lcls_photonEnergyB
self._feeSource = psana.Source('BldInfo(FEEGasDetEnergy)')
self._idData = None
def setEvent(self, evt):
self._evt = evt
self._eBeamData = None
self._evrData = None
self._idData = None
###########################################
# EBeam stuff
def getEBeamEnergyL3_MeV(self):
EBeamObject = self.getEBeamObject()
if EBeamObject == None:
return np.nan
return EBeamObject.ebeamL3Energy()
def getEBeamEnergyBC2_MeV(self):
EBeamObject = self.getEBeamObject()
if EBeamObject == None:
return np.nan
# The BC2 energy is calculated using the dispersion. The vispersion
# value for BC2 is -3.647 mm at the nominal beam energy of 5 GeV [Email
# from Timothy Maxwell to Anton Lindahl on June 2 2014]
return ( EBeamObject.ebeamEnergyBC2() / -364.7 + 1 ) * 5e3
def getEBeamCharge_nC(self):
EBeamObject = self.getEBeamObject()
if EBeamObject == None:
return np.nan
return EBeamObject.ebeamCharge()
def getEBeamPkCurrentBC2_A(self):
EBeamObject = self.getEBeamObject()
if EBeamObject == None:
return np.nan
return EBeamObject.ebeamPkCurrBC2()
def _determineEBeamType(self):
if self._EBeamType is None:
for type in EBeamTypeList:
data = self._evt.get(type, self._EBeamSource)
if data is not None:
self._EBeamType = type
break
def getEBeamObject(self):
# Initialize the EBeam type
if self._EBeamType is None:
self._determineEBeamType()
if self._eBeamData is None and self._EBeamType != None:
self._eBeamData = self._evt.get(self._EBeamType, self._EBeamSource)
return self._eBeamData
###########################################
# Phase cavity
def getPhaseCavityTimes_ps(self):
pc = self._evt.get(psana.Bld.BldDataPhaseCavity,
self._phaseCavitySource)
if pc is None:
return [np.nan] * 2
return [pc.fitTime1(), pc.fitTime2()]
###########################################
# Evr stuff
def getEvrObject(self):
if self._evrData is None:
self._evrData = self._evt.get(self._EvrType, self._EvrSource)
return self._evrData
def getEvrCodes(self):
if self.getEvrObject() == None:
return None
return [fifo.eventCode() for fifo in self._evrData.fifoEvents()]
def evrCodeInEvent(self, evr):
return evr in self.getEvrFifoEventCodes(evt)
###########################################
# x-ray stuff
def getPhotonEnergy(self):
E = self.getEBeamEnergyL3_MeV()
I = self.getEBeamCharge_nC()
return self._photonA * (E + self._photonB * I)**2
def getPulseEnergy_mJ(self):
fee = self._evt.get(psana.Bld.BldDataFEEGasDetEnergyV1, self._feeSource)
if fee is None:
return [np.nan for i in range(4)]
return [ fee.f_11_ENRC(), fee.f_12_ENRC(), fee.f_21_ENRC(),
fee.f_22_ENRC()]
###########################################
# info stuff
def getEventTime(self):
if self._idData == None:
self._idData = self._evt.get(psana.EventId)
if self._idData == None:
return np.nan
timeStamp = self._idData.time()
return timeStamp[0] + timeStamp[1] * 1e-9
def getEventFiducial(self):
if self._idData == None:
self._idData = self._evt.get(psana.EventId)
if self._idData == None:
return 0
return self._idData.fiducials()
if __name__ == '__main__':
from configuration import loadConfiguration
print 'Testing the LCLSdata class.'
config =\
loadConfiguration('/reg/neh/home/alindahl/amoc8114/configFiles/config5-27.json')
lcls = LCLSdata(config)
ds = psana.DataSource("/reg/neh/home/alindahl/wolfiExp/xtc/e24-r0284-s01-c00.xtc")
for num, evt in enumerate(ds.events()):
lcls.setEvent(evt)
if num >= 10:
EBeam = lcls.getEBeamObject()
break
print 'event {}, {} MeV, {} pC, {} A,\nE_photon {}'.format(
num,
lcls.getEBeamEnergyL3_MeV(),
lcls.getEBeamCharge_nC()*1e3,
lcls.getEBeamPkCurrentBC2_A(),
lcls.getPhotonEnergy())
print 'Fifo event codes: {}'.format(lcls.getEvrCodes())
print 'FEE:', lcls.getPulseEnergy_mJ()