LS-CAT Case

In 2007, JJ X-Ray successfully installed two diamond Laue monochromators stations with beryllium lens focusing optics for focusing the beam onto the sample at the LS-CAT (21-ID) at APS, Argonne National Laboratory, USA.

In 2006 The Life Sciences Collaborative Access Team (LS-CAT) at the Advanced Photon Source (APS) under Argonne National Laboratory placed an order with JJ X-Ray for the design, construction, delivery, and installation of two single-wavelength stations for macromolecular experiments. Both stations are for conducting SAD experiments at the selenium edge (12.668 keV).

JJ X-Ray has previously worked intensively with diamond crystal-based optics and beryllium lenses, for example, at the Cassiopeia Beamline at MAX-lab, Sweden. It could thus bring knowledge into this project.

At the time of the contract award, only the conceptual ideas of the beamlines were given, and the design phases included the analytical x-ray optics calculations for determining the optical design of the beamlines. The outcome was a design based on a (100)-normal diamond crystal using the (111) Bragg reflection followed by 6-7 parabolic beryllium focusing lenses providing a focused beam of 50µm x 70µm with 1×1012 ph/s and a resolution of 2×10-4 at a position 10 m downstream of the monochromator diamond crystal.

The LS-CAT project was an ideal type of project for JJ X-Ray as it involved a lot of x-ray physics and engineering development. It allowed us to contribute to our profound experience and know-how at an early stage of the design. The project was installed in record time, within only 20 days from the empty optics hutches to the fully installed beamline delivering a focused beam to the two end stations.

To see more examples of our deliveries and projects with other customers, please click on the various customer cases in the menu to your left, or take a look at our reference list.