Advanced Photon Source at Argonne National Laboratory   APS USAXS instrument
USAXS instrument at the Advanced Photon Source,
X-ray science division, beamline 15ID (ChemMatCARS)

Advanced Photon Source

A U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences national synchrotron x-ray research facility

Argonne Home > Advanced Photon Source > USAXS >

Important links:

USAXS web page

Irena 2 (software for SAS modeling)

Nika 1 (software for SAS area detector  data reduction )

Irena 2 movies & Handouts

Nika movies & Handouts

Indra 2 (software for USAXS data reduction)

Some other useful code for Igor Pro I wrote:

Cromer-Lieberman code for IgorPro (ver. 4.0): AtomicFormFactors

Clementine, package for modeling decay kinetics

Other useful links…

Home page of Pete Jemian (more SAS)

APS SAS web page

Help movies for Irena 2 package of SAS data evaluation and modeling

new location - Youtube channel:

Please, use the new movies on the Youtube channel, this page will be retired soon....


  This page lists available movies designed to help Irena users with various taks. These movies are created on Mac and require Quicktime to play on either Mac or PC.

Installing Irena, Nika, and Indra. Here you should learn how to install Irena macros in Igor Pro on WIndows PC or Mac.

Reducing USAXS data using Indra/Nika/Irena. For USAXS users only, reducing USAXS data - including pinSAXS and WAXS and merging them together.

Navigating through Irena package. Here you should get overview on what is available in Irena.

Importing data. Here you will learn how to import data (examples included with distribution package) into Irena.

Plotting tool I.

Data manipulation.

Unified fit model (old) and Unified fit modeling (new).

Modeling I.

Size distribution.

PDDF (also known as pair distance distribution function or p(r)).

Small-angle diffraction.

Modeling II.

Scattering Contrast Calculator.

Exporting data.

Calibrating SAXS data using Secondary (Glassy carbon) standard.

Hadnouts as pdf files:

Contrast calculator (incl. Anomalous Cromer Liberman code)

Modeling II

Size distribution

Unified fit

Experimental testing data for user to play with: Irena Example



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This page last modified: 2015-03-08 2:47 PM