The Veritas Beamline

If you are a user that needs information about running the beamline. For detailed beamline specifications and optics, please visit the webpage.

_images/arm_3.png — The Veritas spectrometer at 3 different Q-angles. Photo: L. Kjellsson

The Endstation and Sample Environments

We can operate in all three sample environments, Solid, Liquid and Gas. Based on the sample environment, we modify the endstation. Changes range from very subtle to more extensive.

Endstation for Solid and gas samples

For solid and gas samples, we use the Q-chamber (measurement chamber), upper chamber and load lock chamber as shown in the figure. We can also set different scattering angles, thanks to the rotatable Q-chamber. The only difference is the requirement to swap the sample rods.

_images/endstation_1.jpg — Endstation for solid and gas experiments

Solid state sample rod

_images/solid_state.jpg — Solid state sample rod with detachable heads according to user need

Sample rod for gas experiments

_images/gascell.jpg — The sample rod with a gas-cell (inset). Photo: L. Kjellsson

Endstation for Liquid samples

For liquid samples, the changes are more extensive as we need to swap the Q-chamber with a differentially pumped chamber to accomodate the liquid jet sample rod, cold trap and ice breaker. Since this chamber is not rotatable, we are limited to 90 deg scattering angle.

_images/endstation_2.jpg — Endstation for liquid experiments

Sample rod for liquid experiments

_images/liquid_jet.jpg — The liquid jet sample rod