Description and operation characteristics of IONTOF Qtac high sensitivity low energy ion scattering spectrometer

The characteristics and operation modes of the IONTOF Qtac high resolution low energy ion scattering spectrometer are described in sufficient detail that they can be referenced by authors using such instruments and provide readers with a level of instrumental detail often lacking in research papers. The Qtac analyzer is a commercial version of a double toroidal analyzer optimized for collection of low energy ion scattering data. Included is an instrument overview with a description of components and geometries, a table of relevant parameters, and some example data that relate to instrument performance.