Charged-particle ray trace Decorative artwork in the style of a CPO simulation plot: charged-particle trajectories, drawn as fine lines, converge through a crossover at a focal point marked by a glowing dot — the kind of ray trace the CPO programs produce.

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Consultancy

The CPO consultancy record — companies advised, methods invented, and the publications behind the programs.

The personnel of CPO have considerable expertise in designing systems in charged particle optics.

Prof. Frank Read has now retired from consultancy work. CPO consultancy continues through our consultant programme — vetted, practising CPO specialists who help scope a problem, set it up in the software, and provide ongoing support. To discuss a problem or arrange help, please get in touch. Frank's consultancy record is set out below.

Prof. Frank Read has acted as a consultant in instrumentation and charged particle optics for many companies, including:

  • Kratos Analytical Ltd, Manchester, UK

  • Ferranti Ltd, Manchester, UK

  • Shimadzu Research Laboratories (Europe) Ltd, Manchester

  • VG Scientific Ltd, East Grinstead, UK

  • Corning, Inc, New York, USA

  • Photek Ltd, St. Leonards-on-Sea, UK

  • Lucent Technologies Inc, Atlanta, USA

  • IMS, Vienna, Austria

  • Micromass UK Ltd, Manchester, UK

  • Photonis, Brive, France

He has also published Electrostatic lenses, by E Harting and F H Read, Elsevier Publishing Company, Amsterdam (1976) and over 60 refereed papers on instrumentation and charged particle optics.

Several of the papers have been cited more than 50 times — one of them more than 400 times! The papers include:

The invention of 'zoom' lenses:

  • Electron optical systems with fixed image positions for beams of variable energy, by J D Cross, F H Read and E A Riddle, J.Sci.Inst. 44, 993-6 (1967).

  • A three-aperture electron optical lens for producing an image of variable energy but fixed positions, by R E Imhof and F H Read, J.Phys.E (Sci.Instrum.) 1, 859-60 (1968).

The first application of the Boundary Element Method in electron optics:

  • Electrostatic cylinder lenses I: Two element lenses, by F H Read, A Adams and J R Soto-Montiel, J.Phys.E (Sci.Instrum.) 4, 625-32 (1971).

The first high-resolution electron spectrometer:

  • The realisation of high energy-resolution using the hemispherical electrostatic energy selector in electron impact spectrometry, by J N H Brunt F H Read and G C King, J.Phys.E (Sci.Instrum.) 10, 134-9 (1977).

The first application of the Boundary Element Method (which we then called the charge-density method) to space-charge systems:

  • The charge-density method of solving electrostatic problems with and without the inclusion of space-charge, by A Renau, F H Read and J N H Brunt, J.Phys.E (Sci.Instrum.) 15, 347-54 (1982).

The invention of the widely used 'paralleliser':

  • Magnetic field paralleliser for 2* electron spectrometer and electron image magnifier, by P Kruit and F H Read, J.Phys.E (Sci.Instrum.) 16, 313-24 (1983).

The invention and use of the 'backward scattering' technique:

  • The production and optical properties of an unscreened but localised magnetic field, by F H Read and J M Channing, Rev. Sci. Instr. 67, 2372-2377 (1996). Measurements of elastic electron scattering in the backward hemisphere, by M Zubek, N Gulley, G C King and F H Read, J. Phys. B, 29, L239-244 (1996).

The invention of the parallel cylindrical mirror analyzer:

  • The parallel cylindrical mirror electron energy analyzer, by F H Read, Rev. Sci. Instrum. 73 1129-1139 (2002).

Studies of stochastic electron-electron coulomb interactions:

  • Accurate Monte-Carlo calculation of Boersch energy and angle spreading, by F.H. Read and N.J.Bowring, Rev. Sci. Instrum. 74 2280-2287 (2003). Monte-Carlo Calculation Of Boersch Energy Spreading, by F.H. Read and N.J.Bowring, Nucl. Instrum. Meth. A519, 196-204 (2004).

  • The contributions of stochastic coulomb interactions and collective space-charge field aberrations to spatial spreading in charged particle projection systems, by F H Read and N J Bowring, Microelectronic Engineering 73-74, 97-105 (2004).

Prof. Frank Read has also published 1 book and over 140 papers in other areas and several of these papers have been cited more than 100 times.

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