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

The ISIS_moderator Component

ISIS Moderators

Identification

Description

Produces a TS1 or TS2 ISIS moderator distribution.  The Face argument determines which moderator
is to be sampled. Each face uses a different Etable file (the location of which is determined by
the MCTABLES environment variable).  Neutrons are created having a range of energies 
determined by the E0 and E1 arguments.  Trajectories are produced such that they pass
through the moderator face (defined by modXsixe and modYsize) and a focusing rectangle 
(defined by xh,yh and dist).  Please download the documentation for precise instructions for use.

Example:   ISIS_moderator(Face ="water", E0 = 49.0,E1 = 51.0, dist = 1.0, xw = 0.01,
   yh = 0.01, modXsize = 0.074, modYsize = 0.074, CAngle = 0.0,SAC= 1)

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
Face word Name of the face - TS2:groove,hydrogen,narrow,broad - - TS1:Water,ch4,h2,merlin - TS2: Face name W1-9 E1-9  
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  
modXsize m Moderator vertical size  
modYsize m Moderator Horizontal size  
CAngle radians Angle from the centre line  
SAC boolean Apply solid angle correction or not (1/0)  

Output parameters

Name Unit Description Default
modXsize m Moderator vertical size  

Links


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

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Feb 28 2006