...
Datatypes, and how to find data from your detector/device in the xtc file.
https://confluence.slac.stanford.edu/display/PCDS/Psana+User+Manual#PsanaUserManual-DataSourceAddress
Psana User Manual
Pyana and psana has follows this naming scheme for labeling the datatypes from various devices. You can find the
names by investigating the xtc file with the above-mentioned tools (pyxtcreader, xtcscanner, xtcexplorer).
To see some examples of how to fetch the various data types in pyana (or psana), look at Devices and Datatypes.
...
| Cloak |
|---|
|
- Fetching the ControlPV information:
ControlPV is available from the env object, and since it only changes at the beginning
of each calibration cycle, the begincalibcycle function is the appropriate place to get it:
none
The ControlConfig object may contain several pvControl and pvMonitor objects. In this case
there's only one, but make sure the name matches anyway: none
- Fetching the IPIMB and PhaseCavity information:
All the other information that we need, is available through the evt object, and
event member function is the place to get it:
none
Use "XppSb3Ipm-1|Ipimb-0" (a.k.a. IPM3) sum of all channels for normalization and filtering
none
Use "XppSb3Pim-1|Ipimb-0" (a.k.a. PIM3) channel 1 as signal
none
Get the phase cavity:
none
Compute delay time and fill histograms
none
|
Image peak finding
Here are a collection of useful algorithms for image analysis: http://docs.scipy.org/doc/scipy/reference/ndimage.html
...
