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The final comment, before we'll proceed to the practical steps, is that a reader of the document isn't required to be fully familiar with the batch framework. Those areas where such knowledge would be needed are expected to be covered by the document. Though, we still encourage our users to spend some time to get an overview of the Data Analysis Tools we provide at PCDS. That's because many problems in doing the data analysis can be solved by the batch version of psana in a more efficient and natural way. These two flavors of the framework are not meant to compete with each other, they are designed to complement each other to cover a broader spectrum of analysis scenarios.

Test data

Recognizing that some of our users may be still new to LCLS, or not (yet) affiliated with any experiment, or whose experiment hasn't taken a single run to play with we prepared 6 pseudo-experiments which looks exactly like the real ones. Each of those experiments has a small collection of data files which we believe is sufficient to run the examples and to get yourself familiar with the basic concepts of doing data analysis at PCDS. There is one such experiment per LCLS instrument:

• AMO/amotut13
• SXR/sxrtut13
• XPP/xpptut13
• XCS/xcstut13
• CXI/cxitut13
• MEC/mectut13

Data files of these experiments are open for reading to everyone who has a valid UNIX account at SLAC and who is permitted to log onto PCDS machines. Here is a typical data directory for one of those "experiments":

% ls -al /reg/d/psdm/XPP/xpptut13/

drwxr-sr-x   8 psdatmgr ps-data 4096 Jun  4 12:02 .
drwxrwsr-x  30 psdatmgr ps-data 4096 Jun  4 12:02 ..
drwxrwsr-x+  3 psdatmgr ps-data 4096 Jun  5 10:53 calib
drwxrwsr-x+  2 psdatmgr ps-data 4096 Jun  4 12:02 ftc
drwxr-sr-x   2 psdatmgr ps-data 4096 Jun  6 16:41 hdf5
drwxrwsr-x+  2 psdatmgr ps-data 4096 Jun  4 12:02 res
drwxrwsr-x+  2 psdatmgr ps-data 4096 Jun  4 12:03 scratch
drwxr-sr-x   2 psdatmgr ps-data 4096 Jun  6 16:33 xtc

Setting up the analysis environment

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