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from psana_test import obj2str, epicsPvToStr

def getPsanaState(event, configStore, epicsStore):
    evtDict = {}
    cfgDict = {}
    epicsDict = {}
    for key in event.keys():
        if key.type() is None: continue
        obj = event.get(key.type(), key.src(), key.key())
        if (obj is None): continue
        if not hasattr(obj,'TypeId'):  continue
        evtDict[str(key)]=obj2str(obj)
    for key in configStore.keys():
        if key.type() is None: continue
        obj = configStore.get(key.type(), key.src())
        if (obj is None): continue
        if not hasattr(obj,'TypeId'):  continue
        cfgDict[str(key)]=obj2str(obj)
    for pvName in epicsStore.pvNames():
        pv = epicsStore.getPV(pvName)
        if not pv: continue
        epicsDict[pvName] = epicsPvToStr(pv)
    return evtDict, cfgDict, epicsDict

Package TimeTool

Modules for analyzing recorded data from a timetool camera setup. The timetool camera measures the time difference between laser and FEL in one of two methods:

1. spatial encoding, where the X-rays change the reflectivity of a material and the laser probesthat change by the incident angle of its wavefront; or
2. spectral encoding, where the X-rays change the transmission of a material and the chirped laser probes it by a change in the spectral components of the transmitted laser.

Below the package modules are described. The package includes sample configuration files that describe all the options. From a psana release directory, users are encouraged to add the TimeTool package to obtain the latest source. For instance:

newrel ana-current myrel
cd myrel
kinit             # get ticket to check out package from svn repository
addpkg TimeTool
sit_setup
scons
# now examine the files in TimeTool/data:  sxr_timetool.cfg  sxr_timetool_setup.cfg  timetool_setup.py  xpp_timetool.cfg  xpptut.cfg

 timetool_setup.py is a python script to calculate the digital filter weights.

Module Analyze

a module that analyzes the camera image by projecting a region of interest onto an axis and dividing by a reference projection acquired without the FEL.  The resulting projection is processed by a digital filter which yields a peak at the location of the change in reflectivity/transmission.  The resulting parameters are written into the psana event. The default behavior is to write these values in as a set of double's. Unfortunately double's are presently not visible to Python scripts or modules in the psana framework. In the next analysis release (ana-0.13.1) these values can also written as a set of ndarray's, each with one double. These will be visible on the Python side. This can be done by adding the option

put_ndarrays=True

to the config file. To use the features prior to that release, when adding the TimeTool package to your test release, do

addpkg TimeTool V00-00-03

Module Check

a module that retrieves results from the event for either the above module or from data recorded online.

Module Setup

a module that calculates the reference autocorrelation function from events without FEL for use in the digital filter construction.

References

• Psana User Manual - Old
• Psana Reference Manual - Old
• psana - Module Examples
• Migration from pyana to psana
• psana - Migration from pyana

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