McXtrace - An X-ray ray-trace simulation package

[ Identification | Description | Input parameters | Links ]

The PSD_monitor_coh Component

Position-sensitive monitor with phase integration.

Identification

• Site:
• Author: Erik Knudsen
• Origin: Risoe
• Date: March 13, 2010

Description

An (n times m) pixel PSD monitor taking phase into account.
As the i:th ray hits a pixel (j,k) in the monitor the intensity in that
pixel will be updated as a complex sum, i.e. $P\_i\; =\; P\_\{i-1\}\; +\; p\_i\; exp\{-\backslash phi\_i\}$.

By setting ratio<1 the effective pixel area becomes a
fraction of the ideal (which is to divide the xwidth and yheight intervals into nx and ny abutting
subintervals). This reduces the monitor effective area by ratio^2.
If the centering flag is set - the monitor will treat all rays as if they hit a pixel
center. This behaves as if ratio -> 0, but at no cost in statistics.

Example: PSD_monitor_coh(xwidth=0.1, yheight=0.1,
nx=90, ny=90, filename="Output.psd")

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
nx		Number of pixel columns.	90
ny		Number of pixel rows.	90
filename	m	Name of file in which to store the detector images - the suffixes .abs and .arg will be added.	0
restore_xray		If set, the monitor does not influence the xray state.	0
xwidth	m	Width of detector.	0.05
yheight	m	Height of detector.	0.05
ratio		ratio between pixel area and effective pixel area.	1
centering		Treat all rays as if they hit the center of the pixel.	1
nowritefile	1	If set, monitor will skip writing to disk	0

AT (	,	,		) RELATIVE		Generate
ROTATED (	,	,		) RELATIVE

Links

• Source code for PSD_monitor_coh.comp.

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[ Identification | Description | Input parameters | Links ]

Generated on mcxtrace 3.5.24

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Last Modified: Sunday, 06-Apr-2025 20:25:04 CEST