McXtrace - An X-ray ray-trace simulation package

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

The NSLS2_CHX Instrument

Coherent hard x-ray beamline @ NSLS II

Identification

• Site: NSLS2
• Author: Jana Baltser
• Origin: NBI, BNL
• Date: March 2011

Description

This is a lay-out of the coherent hard x-ray (CHX) beamline at NSLS-II.
Since the ray-tracing method doesn't allow to account for partial coherence of the
undulator source, the best approximation was to use the gaussian photon beam and to neglect
diffraction effects on apertures.
The choice of the source sizes along with angular divergence corresponds to the situation of
high emittance (e=0.99nm).

Examples

(Test cases in bold)

• Test: NSLS2_CHX -n1e6 L=33.5 L2=35.3 L3=44 Energy=10 Detector: Det_ff_I=2.82787e+16

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
L	m	Distance from the source to the SS1, secondary source aperture.	33.5
L2	m	Position of the CRL.	35.3
L3	m	Position of the Kinoform lens.	44
Energy	keV	primary energy used at the beamline.	10

Links

• Source code for NSLS2_CHX.instr.

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

Generated for mcxtrace 3.8.4

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Last Modified: Friday, 11-Sep-2026 15:00:07 CEST