qRIXS Layout & Specifications

The qRIXS instrument is comprised of a sample chamber and a rotatable spectrometer consisting of grating and detector assemblies (and auxiliary components), continuously covering the range of scattering angles 40-150 degrees in the horizontal plane. 

The spectrometer is designed to achieve a target resolving power of 50,000 at 1 keV, with the option for lower resolving power, ~10,000, and higher throughput through the use of a second grating.  The scattered x-rays will be horizontally collimated via a parabolic mirror to increase acceptance and facilitate future polarization-resolved studies.

The sample chamber is designed to accommodate the technique of Resonant Elastic X-ray Scattering (REXS).  For this, a suite of in-vacuum point and 2D detectors will be implemented on a rotating arm to allow for rapid X-ray Absorption Spectroscopy (XAS) and (super)structural peak finding for sample orientation. 

The chamber is equipped with an in-vacuum diffractometer with 6 axis of motion.  Sample cooling down to 25 K will be possible.  In-coupling of a wide variety of laser radiation, including long-wavelength THz beams, will be accommodated.  Sample transfer will be facilitated via a load-lock chamber.  In addition, provisions are made so that X-ray Photon Correlation Spectroscopy (XPCS) experiments on solid samples could be performed as well.

Beamline Specifications