...

This site documents the usage of "psana python", which is software that can be used to analyze LCLS data.  Using this relatively simple python code, it is possible to analyze LCLS data in parallel on hundreds of CPU cores, both offline and in real-time while data is being taken.  To see a simple 17-line introductory script, and a list of other features click here. You may also wish to:

• Get yourself a computer 

  Link in New Window
  PCDS:Accounts linkText account href PCDS:Accounts PCDS:Accounts

  at LCLS

• Learn how to use the 

  Link in New Window
  linkText batch system href PCDS:Submitting Batch Jobs

• Locate the 

  Link in New Window
  linkText data of your experiment href PCDS:Managing Files

• Look through our 

  Link in New Window
  PCDS:Data Retention Policy linkText Data Retention Policies href PCDS:Data Retention Policy PCDS:Data Retention Policy

How to Use This Site

The first tip is on how to find the information you need. This is what we suggest: 

• note the document tree on the left side bar of the Portal. The tree is designed to help you find your way to the right document. If you won't see the tree then it's most likely turned off. That' easy to fix - just look on the top-right side of this page and notice a little icon (left to the 'Search' box) which will toggle the visibility of the side bar.
• most pages in this site list topics to review next, as well as additional related topics
• if you know what you're looking for use search on the sidebar just above the tree. One can also use the tree structure to get yourself familiar with the general structure of the documentation. This may make your search more efficient.
• some pages on this site will redirect you (if needed) to other Confluence 'spaces' (sites). Note that the 'Search' will not propagate to those other spaces

...

Get yourself a computer  Link in New WindowPCDS:AccountslinkTextaccounthrefPCDS:AccountsPCDS:Accountsat PCDS
• Learn about psana-python here
• Learn which computing and storage resources are available for LCLS users
• Link in New WindowPCDS:Managing FileslinkTextlocate the data of your experimenthrefPCDS:Managing FilesPCDS:Managing FilesYou may also need to look through our  Link in New WindowPCDS:Data Retention PolicylinkTextData Retention PolicieshrefPCDS:Data Retention PolicyPCDS:Data Retention Policy

  • Note that data files of older experiments may not be available on disk and you may need to order then to be restored from tape before you can do your analysis.

How To Get Help with Analysis Tools

We advise sending your questions to our "hot line" e-mail: pcds-help@slac.stanford.edu with relevant information (e.g. scripts, and other files involved in the failure). One of our experts will contact you.

In case if you run into some problem with our software then it would be helpful if you provided the following information:

...

you

...

.

...