HT.optimize.field: HX.optimize.field

In HITXML: Planning tools for ion beam therapy

Description

Optimizes distance between raster spot positions to yield a square-shaped inner field area of optimal homogeneity. The beam is assumed to be double-gaussien, the distance between the spot positions is same in x and y.

Usage

HX.optimize.field( focus.FWHM.mm, field.size.mm, fluence.cm2, N.min, d.start.mm, plot = FALSE)

Arguments

focus.FWHM.mm	FWHM size of double-Gaussian beam spot (in mm).
field.size.mm	Side length (in mm) of the square field in which homgenous fluence shall be obtained. Actual irradiation field will be bigger.
fluence.cm2	Particle fluence (in 1/cm2) within the homogenous field area.
N.min	Minimal number of particle per raster spot. Given by machine constraints.
d.start.mm	Start value for distance d (in mm), a reasonable value is focus / 3.

Value

It is also adviced to follow the optimization routine output to check if it works ok.

Examples

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HITXML documentation built on May 2, 2019, 5:25 p.m.