[ Identification | Description | Input parameters | Output parameters | Links ]
Virtual_input
ComponentThis component reads neutron events stored into a file, and sends them into the instrument. It thus replaces a Source component, using a previously computed neutron set. The 'source' file type may be either of text or binary format. The component may recognize its format automatically, but you may force the file type ('type' parameter). The number of neutron events for the simulation is set to the length of the 'source' file times the repetition parameter 'repeat_count' (1 by default). It is particularly useful to generate a virtual source at a point that few neutron reach. A long simulation will then only be performed once, to create the 'source' file. Further simulations are much faster if they start from this low flux position with the 'source' file. Possible file formats are: 1-text column formatted with lines containing 11 values in the order: p x y z vx vy vz t sx sy sz stored into about 83 bytes/n. 2-float or double binary files (with the 11 values 'p x y z vx vy vz t sx sy sz') stored into 44 and 88 bytes/n respectively for float/double. EXAMPLE: To create a 'source' file collecting all neutron states, use: COMPONENT MySourceCreator = Virtual_output(file = "MySource.list") at the position where will be the Virtual_input. Then unactivate the part of the simulation description before (and including) the component MySourceCreator. Put the new instrument source: COMPONENT Source = Virtual_input(file="MySource.list") at the same position as 'MySourceCreator'. A Vitess file may be obtained from the 'Vitess_output' component or from a Vitess simulation (104 bytes per neutron) and read with Vitess_input.
Name | Unit | Description | Default |
---|---|---|---|
file | str | name of the neutron input file, or stdin if left to 0. | 0 |
type | str | may be "text", "float" or "double" to force file type. default is text file. | 0 |
repeat_count | 1 | ||
bufsize | records | Size of neutron input buffer. 0 for 'use all'. | 0 |
Name | Unit | Description | Default |
---|---|---|---|
rep | |||
pos | |||
nrows | |||
nread | |||
Offset | |||
rTable | |||
Virtual_input_Read_Input |
Virtual_input.comp
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[ Identification | Description | Input parameters | Output parameters | Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Feb 28 2006