source command


source | items 
       / prefix() 
         import()   list    centre(0,0,0) debug
         export()   delete  energy()
         read       display dir(0,0)
         write      inspect

Purpose

Handles source setup

Parameters

items: For read specifies the name of the source file to be read.
Otherwise specifies the primary particle (projectile) type.
prefix(prefix): For output options only: file name is prefixed with <prefix>.
import(): Not yet implemented.
export(fmt): Not yet implemented.
read: Read source data file specified by items
write: Not yet implemented.
list: List source data.
delete: Delete source data.
display: Not yet implemented.
inspect: Show some internal info about the current source data.
centre(x,y,z): Specifies the source position (cm).
energy(e): Specifies the primary particle energy (electrons and photons in keV, ions in MeV/u).
dir(thmin[,thmax],phmin[,phmax]): Specifies emission direction, polar and azimuth angles in degree. If two numbers, thmin,phmin, are given they are interpreted as single polar and azimuth angle, respectively. If four numbers, are given they are interpreted as polar and azimuth angular range, with isotropic emission. A single * denotes isotropic emission in all directions.
debug: Debug switch. Lots of output !

Remarks

This command implements a simple point source. More spatial distributions are possible using external source files.

Examples

```
   source edist.src / read
```
Read an external source file
```
   source H1+ / dir(0,0) e(1.0) centre(0,0,-1E-4)  
```
Specifies protons of 1 MeV/u energy, starting at z=-1E-4 cm (1 micron) in z-direction.
```
   source e- / dir(*) e(1.0) centre(0,0,0)  
```
Specifies electrons of 1 keV energy, starting at 0, emitted isotropically in all directions.

Last updated: M.Kraemer,
$Id: traxcmdsource.html,v 1.7 2019/03/17 22:57:49 kraemer Exp $