Abstract
One of the most important measurements that can be performed on an intense high-current density ion beam is a direct measurement of the beam’s time-resolved energy spectrum. This measurement allows a direct determination of the current density, power density, current, and voltage of the beam as a function of time. These quantities are all of obvious importance in characterizing any intense beam. In addition, a comparison of a direct measurement of an ion energy spectrum, with the ion energy distribution, inferred from a line voltage monitor allows a study of A-K gap energy loss mechanisms and the effects of any A-K gap neutral gas on diode performance.
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References
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It must be understood that when discussing absolute energy spectra, current density, or power density, a surface for the beam to pass through must be defined. The original Monte Carlo code calculations used the disk surface shown in Fig. 5. However, because of the cylindrical geometry of the diode, it was desired to calculate the current density on a cylindrical surface onto which the full beam was incident. From Monte Carlo calculations and analytical calculations, the conversion between the two geometries is related by multiplying the disk geometry by a factor of 2 to obtain the cylindrical geometry. All results are reported in terms of cylindrical geometry.
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© 1986 Springer Science+Business Media Dordrecht
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Leeper, R.J., Lee, J.R., Wissel, L., Johnson, D.J., Stygar, W.A. (1986). Particle Analyzer Diagnostics for Intense Particle Beam Measurements. In: Thompson, J.E., Luessen, L.H. (eds) Fast Electrical and Optical Measurements. NATO ASI Series, vol 108/109. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0445-8_11
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DOI: https://doi.org/10.1007/978-94-017-0445-8_11
Publisher Name: Springer, Dordrecht
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