Your licence comes with an expert.

I have much experimental experience in Ultra High Vacuum, Field emission and electron optical devices such as electron energy analysers. I have used a number of electron optical simulation packages including SIMION, COMSOL and Poisson-Superfish.

With CPO I have simulated field emission from a nanotip in both 2D and 3D modes. I have also used SIMION and CPO to simulate electron trajectories to optimise the performance of a miniature “Bessel box” electron energy analyser.

For the CPO simulations, I have simulated several non-cylindrically symmetric geometries - which would have been impossible for a Finite Element modelling package such as SIMION or Munro (MEBS). I have also simulated a high current device where space charge became an important aspect to consider.

I wrote the CPO programs, and the Boundary Element Method they use was first applied to electron optics in my work in 1971. I am co-author of Electrostatic Lenses (Harting and Read, Elsevier, 1976) and of over 60 refereed papers on instrumentation and charged particle optics.

I have consulted on instrument design for Kratos Analytical, Shimadzu Research Laboratories, VG Scientific, Micromass, Corning, Photek, Photonis, IMS Vienna and Lucent Technologies. My own inventions include the zoom lens, the magnetic paralleliser, the parallel cylindrical mirror analyser and the backward-scattering technique.

I have retired from general consultancy, but I remain available for selected work - particularly where the method itself is in question: space charge and stochastic Coulomb interactions, energy analyser design, and cases where the numbers coming out of a simulation need to be understood rather than merely obtained.