Introduction

This document describes C++ analysis framework for LCLS and how users can make use of its features. Psana design borrows ideas from multitude of other framworks such as pyana, myana, BaBar framework, etc. It's main principles are summarized here:

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The parameters that are needed for the framework are defined in (deprecated) psana modules section. Here is the list of parameters which can appear in that section:

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A set of psana modules is available in current release as explained in Psana Module Catalog. Part of them demonstrates how data can be accessed from user module code . Other modules can be used in data analysis or event filtering. Example of application for these modules are available in separate document:

• Psana Module Examples - for advanced modules for analysis and event filtering

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