[ Identification | Description | Input parameters | Links ]

The Union_logger_1D Component

One dimensional Union logger for several possible variables

Identification

• Site:
• Author: Mads Bertelsen
• Origin: University of Copenhagen
• Date: 20.08.15

Description

Part of the Union components, a set of components that work together and thus
sperates geometry and physics within McStas.
The use of this component requires other components to be used.

1) One specifies a number of processes using process components
2) These are gathered into material definitions using Union_make_material
3) Geometries are placed using Union_box/cylinder/sphere, assigned a material
4) A Union_master component placed after all of the above

Only in step 4 will any simulation happen, and per default all geometries
defined before this master, but after the previous will be simulated here.

There is a dedicated manual available for the Union_components

This logger in particular is not finished. It is supposed to allow several
different variables to be histogrammed, but currently only time is supported

A logger will log something for scattering events happening to certain volumes,
which are specified in the target_geometry string. By leaving it blank, all
geometries are logged, even the ones not defined at this point in the
instrument file. If a list og target_geometries is selected, one can further
narrow the events logged by providing a list of process names in target_process
which need to correspond with names of defined Union_process components.

To use the logger_conditional_extend function, set it to some integer value n
and make and extend section to the master component that runs the geometry.
In this extend function, logger_conditional_extend[n] is 1 if the conditional
stack evaluated to true, 0 if not. This way one can check what rays is logged
using regular McStas monitors. Only works if a conditional is applied to this
logger.

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
target_geometry	string	Comma seperated list of geometry names that will be logged, leave empty for all volumes (even not defined yet)	"NULL"
target_process	string	Comma seperated names of physical processes, if volumes are selected, one can select Union_process names	"NULL"
min_value	1	Histogram boundery for logged value
max_value	1	Histogram boundery for logged value
n1	1	Number of bins in histogram	90
variable	string	Time for time in seconds, q for magnitude of scattering vector in 1/AA.	"time"
filename	string	Filename of produced data file	"NULL"
order_total	1	Only log rays that scatter for the n'th time, 0 for all orders	0
order_volume	1	Only log rays that scatter for the n'th time in the same geometry	0
order_volume_process	1	Only log rays that scatter for the n'th time in the same geometry, using the same process	0
logger_conditional_extend_index	1	If a conditional is used with this logger, the result of each conditional calculation can be made available in extend as a array called "logger_conditional_extend", and one would then acces logger_conditional_extend[n] if logger_conditional_extend_index is set to n	-1
init	string	Name of Union_init component (typically "init", default)	"init"

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

Links

• Source code for Union_logger_1D.comp.

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[ Identification | Description | Input parameters | Links ]

Generated on mcstas 3.5.32

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Last Modified: Monday, 30-Jun-2025 11:05:10 CEST