.. include:: ../substitutions.txt

.. _aps_13idd_gpd:

APS 13-ID-C Surface Scattering and General Purpose Diffraction
=================================================================


Beamline Overview
~~~~~~~~~~~~~~~~~~~~~~~

The 13-ID-C beamline features a 6-circle kappa diffractometer, and
support Surface scattering methods including Crystal-Truncation Rods,
-ray Reflectivity, X-ray Standing Waves, and Resonant Anomalous X-ray
Reflectivity.


Contacts
~~~~~~~~~~~~~~~~~~~~

 +-----------------------+-----------------------------------+
 | Name                  | email                             |
 +=======================+===================================+
 | Peter Eng             | eng@cars.uchicago.edu             |
 +-----------------------+-----------------------------------+
 | Joanne Stubbs         | stubbs@cars.uchicago.edu          |
 +-----------------------+-----------------------------------+

Beamline specifications
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


 +---------------------------+-----------------------------------------------------------+
 | Quantity                  | Value                                                     |
 +===========================+===========================================================+
 | X-ray Source              | APS undulator, 27 mm period                               |
 +---------------------------+-----------------------------------------------------------+
 | Typical Beam Size  (GPD)  | 30 x 30 |micron| to 2 x 1 mm                              |
 +---------------------------+-----------------------------------------------------------+
 | Monochromator             | Double-Crystal Mono, LN2-cooled, 2 crystal sets           |
 +----+----------------------+-----------------------------------------------------------+
 | Si (111) monochromator crystal set                                                    |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Energy Range (keV)    | 5.0 to 80                                                 |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Energy Resolution     | 1.3x10\ :sup:`-4`, typical                                |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Typical Flux (Hz)     | 5x10\ :sup:`12` (40 keV)                                  |
 +---+-----------------------+-----------------------------------------------------------+
 | Si (311) monochromator crystal set                                                    |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Energy Range (keV)    | 8 to 80                                                   |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Energy Resolution     | 4x10\ :sup:`-5`, typical                                  |
 +---+-----------------------+-----------------------------------------------------------+
 |   | Typical Flux (Hz)     | 1x10\ :sup:`12` (40 keV)                                  |
 +---+-----------------------+-----------------------------------------------------------+


Supported Techniques
~~~~~~~~~~~~~~~~~~~~~~~~

 * X-ray Surface Diffraction, Crystal-Truncation Rods
 * X-ray Reflectivity, X-ray Standing Waves
 * Resonant Anomalous X-ray Reflectivity
 * Micro X-ray diffraction

Detectors
~~~~~~~~~~~~~~~~~~~~

 * Pilatus 100K, with 172 |micron| pixels.


Additional Equipment
~~~~~~~~~~~~~~~~~~~~~~~~

 * Sample preparation lab


Data Collection Software
~~~~~~~~~~~~~~~~~~~~~~~~~~~

Epics, Spec, IDL, Python

Data Visualization Software
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PyMCA, Dioptas


X-ray Source and Optics
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


13-ID-C uses a 2.1-m undulator with permanent magnets and a 27mm
period (70 pole pairs) for the X-ray source.  The undulator gap can be
varied from 8.5 mm up to 150 mm, giving X-ray energies ranging from
5 keV and up.

A high-heatload liquid nitrogen-cooled double crystal monochromator is
used to define the energy, using either Si(111) or Si(311) crystals,
at ~25 m from the X-ray source.  This monochromator works in fixed
offset mode, with the offset putting the monochromatic beam 15 mm
above the white beam. ...



Sample Mounting and Environments
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  * liquid cells, including for actinide studies.


Typical Paragraph for a publication
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



Related Support Laboratories
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


  * sample prep