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McXtrace - An X-ray ray-trace simulation package

ESRF; SAXSLAB Niels Bohr Institute DTU Physics


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McXtrace: JJ_SAXS Instrument at SAXSLAB

[ Identification | Description | Input parameters | Output parameters | Links ]

The JJ_SAXS Instrument

Crude model of a laboratory SAXS-instrument mimicking the type sold by SAXSlab/JJ-Xray Systems.


  • Site: SAXSLAB
  • Author: Erik Knudsen (
  • Origin: Risø DTU.
  • Date: September 24th, 2009
  • Version: 0.1_alpha


This is a very sketchy model of a SAXS-system, related to the old design of JJ X-ray systems.
It has been superseeded by the SAXS_saxslab model.

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
pin2_pos m distance between 1st and 2nd pinhole in beam tube 0.2
pin3_pos m distance between 2nd and 3rd pinhole in beam tube 0.4
optic_L m length of the focusing optic 0.1
sample_pos m distance from 3rd pinhole to sample 0.2
detector_pos m distance from 3rd pinhole to detector 2


  • Source code for JJ_SAXS.instr.
  • A reference/HTML link for more information

[ Identification | Description | Input parameters | Output parameters | Links ]

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Last Modified: Tuesday, 28-Apr-2020 11:59:35 CEST
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