Branch A: SoXS and TeXS

Overview

Branch A consists of two endstations, soft X-ray scattering (SoXS) and tender X-ray scattering (TeXS). A common vacuum chamber is shared by the two endstations, which also houses two front X-ray detectors. The scattering signal can be collected either by the front detectors or by the back detector. The long vacuum flight tube provides low air scattering and long sample-detector distance of about 10 m. In the middle of the flight tube, an additional chamber can be mounted to perform ambient-pressure scattering experiments. At the end of the flight tube, tender X-ray scattering images from the samples either chambers are collected by the back detector, which is a counting detector suitable for tender X-rays.

Key Performance

Branch B: QM-REXS

Overview

Branch B is the Resonant Elastic X-ray Scattering (REXS) station for quantum materials, including three main sections of the front-end optical path, the testing section, and the sample transfer unit. To ensure accurate optical alignment for the desired diffraction peaks, the sample stage provides 6-axis alignment.

There is a magnetically shielded gold mesh for beam intensity monitoring. A superconducting magnet is introduced to realize the scattering measurements at the magnetic field up to 5T with the diffraction angle of 0~140°. 

I. Load-lock

A irradiation lamp for heating and degassing.

II. Sample Transfer Chamber

up to 6 samples can be loaded (flag-type sample plate).

An xy-mini translation stage for smooth and accurate movement.

The vacuum flexible bellows for fine-tuning the sample orientation.

III. Experimental Chamber

A 4K×4K CCD detector (Greateyes) with a photodiode and channel electron multiplier.

6-axis sample alignment.  

Key Performance