Commissioning of the Tender X-ray Beamline at the High Energy Photon Source.

The Tender X-ray Beamline (TEX), using a bending magnet as a light source, is the first beamline of the High Energy Photon Source (HEPS) to undergo commissioning. It covers an energy range from 2.1 keV to 11 keV. Dynamic diagnostic tools have been installed and can measure the photon flux, energy resolution and position stability. By use of these tools, TEX was found to achieve a photon flux of up to 9 × 1011 photons s-1, with an energy resolution of 5904 @ 3203.6 eV and position stability lower than ±3 µm (horizontal) × 15 µm (vertical). In this paper, the diagnostic process of the beamline and its performance will be introduced in detail.