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

The Hidden_Cylinder Instrument

Small test instrument testing placement of low-priority Union cylinder within higher-priority Union cylinder.

Identification

• Site: Tests_union
• Author: Daniel Lomholt Christensen
• Origin: UCPH@NBI, Funded by ACTNXT
• Date: 15:54:48 on January 20, 2026

Description

A small test instrument testing the placement of one cylinder with a low priority
fully inside another cylinder with a higher priority. This was added to test
for an mcdisplay error that used to occur, when a cylinder is completely
enclosed in another cylinder.
To test this simply do
a "mcdisplay Hidden_Cylinder.instr -c -y"

Examples

(Test cases in bold)

• Test: pin_rad=0.0025 Detector: det_I=3.42884e-06

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
pin_rad	m	Radius of source	0.0025
d	m	Distance between source and sample center	10
detector_x	m	Detector Width	0.01
detector_y	m	Detector Height	0.04
det_dist	m	Distance between detector and sample center	0.005

Links

• Source code for Hidden_Cylinder.instr.

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

Generated for mcstas 3.8.4

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Last Modified: Friday, 11-Sep-2026 15:00:09 CEST