Oct. 16, 2015
The final major component of the endstation, the detector array, is now installed. Four silicon drift detectors are positioned 30 mm from the sample with a specific geometry that will provide multiple perspectives and optimize contrast. 3D printed caps are positioned over the detectors to prevent damage, reduce scattering background and hold thin film filters.
Sept. 17, 2015
Test measurements were made of a fly wing. Images of a 2 x 2 mm field of view were acquired at a resolution of approximately 20 microns. The lower image shows x-ray transmission and the upper image shows carbon fluorescence. An x-ray energy of 290 eV was used in the acquisition.
Aug. 13, 2015
The first x-ray images have been acquired on the SGM. The test samples were a 0-80 nut and a gold mesh with a wire pitch of 20 microns. A photon energy of 711 eV (Fe L-edge) was used and the total electron yield from the sample was used to generate the contrast in the images.
July 30, 2015
The KB mirrors have been successfully used to focus the beam to approximately 30 x 20 microns. Optimization of the transmission and the beam demagnification will continue.
July 23, 2015
The two 150 mm long trapezoidal focusing mirrors were successfully installed on July 23rd. Bending motors and encoders have been tested.
June 14, 2015
Testing of the KB mirror bender mechanism and motors is underway. This system is 375 mm upstream from the sample and will focus the beam to 10 by 10 microns.
May 12, 2015
The vacuum compatible hexapod sample positioner has been installed and tested in the ambient pressure endstation.
May 9, 2015
Most of the parts have arrived and the construction of the new ambient pressure endstation has begun.