Help: Trapped particle radiation

Table of Contents	ECSS	Model Page
Background Information	Radiation sources and effects
	Trapped particles radiation

Overview

SPENVIS allow to force an average radiation belt flux spectrum over a spacecraft trajectory with the number of segments currently limited to 1.

If no trajectory has been generated yet, the orbit generator should be run first.

The input parameters and options are described below. When the input form has been completed, pressing the button will start the calculation and bring up the "Results" page.

The button calls up the model selection page for consecutive runs of multiple models. This feature is available for advanced users only.

Warning: using these buttons deletes all existing output from the trapped radiation models and from any model that uses this output, in order to ensure consistency in the outputs.

Input parameters

The user can define the Radiation Belt (RB) proton and electron differential flux spectra by:

Linear distribution: dF/dE = A·(E - E₀) + B

inputs

^-2

^-1

^-2

^-1

₀

Power law distribution: dF/dE = A·(E/E₀)^alpha

inputs

^-2

^-1

₀

Exponential distribution: dF/dE = A·exp(1-E/E₀)

inputs

^-2

^-1

₀

Table with minimum three energy points

inputs

In the latter case, the input data are interpolated on a fixed grid of energy points and then integrated to calculate the integral flux.

Results

The model produce the files listed in the table below. A description of the file formats can be brought up by clicking on their description in the table.

The report file spenvis_anzu.html contains a summary of the input parameters. The orbit averaged spectra for trapped protons and electrons are stored in the spenvis_tri.txt file.

**Output files generated by AE9/AP9**
File name	Description
`spenvis_anzu.html`	Report file
`spenvis_tri.txt`	Orbit averaged spectra for SHIELDOSE(-2), NIEL, EQFLUX, MULASSIS, GRAS, GEMAT, PLANETOCOSMICS, NEWUPSETO, LONGUPSET

To generate plots, select the plot type(s), options and graphics format, and click the or button. The current page will be updated with the newly generated plot files.

The button calls up the output page for consecutive runs of multiple models. This button only appears when the trapped radiation models have been included in the combined model run selection. This feature is available for advanced users only.

Last update: Wed., 10 Aug. 2016