The 4-ID-D is the hard x-ray (2.5 keV -> 50 keV) branch of sector 4.  It's primary focus is on the study of magnetic using synchrotron radiation techniques. This typicaly involves the manipulation and analysis of the polarization of either incoming or scattered x-ray beams. 

• X-ray magnetic circular dichroism.
• Resonant and Non-Resonant magnetic x-ray scattering.
• X-ray magnetic reflectivity studies.

• Daniel Haskel (haskel@aps.anl.gov) - XMCD, Magnetic Reflectivity
• Zahir Islam (zahir@aps.anl.gov) - Magnetic Diffraction, In-Field Diffraction
• Yejun Feng (yejun@aps.anl.gov) - Magnetic Scattering, High-Pressure single crystal studies