Power Supplies for Quadrupole/Octupole Aberration Correctors
- Practical Electron Microscopy and Database -
- An Online Book -


This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.


Multipole lenses normally need many power supplies, especially for those used for aberration correctors. For instance, in the quadrupole–octupole correctors presented by Krivanek et al [1], each quadrupole layer of the corrector needed four current supplies, including one for its ‘‘normal’’ quadrupole, one for ‘‘skew’’ quadrupole, two for its X and Y dipoles, respecitaly, and there were 12 quadrupoles totally. Each quadrupole–octupole layer needed five supplies and there were three quadrupole–octupole layers totally. Therefore, the corrector needed 63 power supplies.




[1] Krivanek OL, Corbin GJ, Dellby N, Elston BF, Keyse RJ, Murfitt MF, Own CS, Szilagyi ZS, Woodruff JW. An electron microscope for the aberration-corrected era, Ultramicroscopy, 108 (2008) 179–195. 




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