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

The Moderator Component

A simple pulsed source for time-of-flight.

Identification

• Author: KN, M.Hagen
• Origin: Risoe
• Date: August 1998
• Version: 1.28

Description

Produces a simple time-of-flight spectrum, with a flat energy distribution

Example: Moderator(radius = 0.0707, dist = 9.035, xw = 0.021, yh = 0.021,
                   E0 = 10, E1 = 15, Ec = 9.0, t0 = 37.15, gam = 39.1)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
radius	m	Radius of source
E0	meV	Lower edge of energy distribution
E1	meV	Upper edge of energy distribution
dist	m	Distance from source to the focusing rectangle
xw	m	Width of focusing rectangle
yh	m	Height of focusing rectangle
t0	mus	decay constant for low-energy neutrons	37.15
Ec	meV	Critical energy, below which the flux decay is constant	9.0
gam	meV	energy dependence of decay time	39.1

Output parameters

Name	Unit	Description	Default
p_in

Links

• Source code for Moderator.comp.

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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Sat Jul 31 08:37:33 2010

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Last Modified: Saturday, 31-Jul-2010 10:37:33 CEST