Rapid measurement of charged particle beam profiles using a current flux grating

The Review of Scientific Instruments
Samit PaulSudeep Bhattacharjee

Abstract

The principle and physics issues of charged particle beam diagnostics using a current flux grating are presented. Unidirectional array of conducting channels with interstitial insulating layers of spacing d is placed in the beam path to capture flux of charge and electronically reproduce an exact beam current profile with density variation. The role of secondary electrons due to the impinging particle beam (both electron and ion) on the probe is addressed and a correction factor is introduced. A 2-dimensional profile of the electron beam is obtained by rotating the probe about the beam axis. Finally, a comparison of measured beam profile with a Gaussian is presented.

References

Jul 8, 2008·The Review of Scientific Instruments·Jose V MathewSudeep Bhattacharjee
Dec 2, 2009·The Review of Scientific Instruments·Lauri PanitzschRobert F Wimmer-Schweingruber
Feb 2, 2011·The Review of Scientific Instruments·Jose V Mathew, Sudeep Bhattacharjee
Feb 10, 2009·Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment·O SiegmundJ McPhate
Mar 3, 2012·The Review of Scientific Instruments·Samit PaulSudeep Bhattacharjee
Jul 5, 2012·The Review of Scientific Instruments·Hai-Bo ZhangWan-Zhao Cui

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