Grasshopper Monochromator for synchrotron beamline applications McPherson built a commercial 2-meter focal length grazing incidence spectrometer in the late seventies called "Grasshopper." It was designed specifically for use at synchrotron storage rings. The Grasshopper was unique for its method of scanning pre- mirror and grating to maintain focus, and trajectory, at the exit slit. The entrance slit-mirror is a Codling combination, made from a Platinum coated copper plane mirror. McPherson built the instrument shown in the photo for Stanford Synchrotron Radiation Laboratory (SSRL). The Grasshopper design was not by McPherson. Rather, it was a collaboration by researchers at SSRL and SRC in Wisconsin.

Current McPherson ultra high vacuum (UHV) instruments are baked and RGA tested prior to shipment. Unique proven McPherson designs separate support members for chambers and precision grating mechanism. This for reduced sensitivity to vibration and thermal environmental factors. Scan grating angle by computer control and use rotary or laser tilt encoders for absolute feedback. Index gratings under vacuum, manually or by motor control. We have a variety of beam line instruments and accessories available.