[ Identification | Description | Input parameters | Links ]

The He3_cell Component

Polarised 3He cell

Identification

• Site:
• Author: Trefor Roberts & Erik B Knudsen
• Origin: ILL/DTU Physics
• Date: March 1999

Description

Simple polarised 3He neutron spin filter cell, defaults to a cylindrical geometry but may be
used with a sphere or box geometry also.
The glass container for the cell is not included in the model.

This component has been validated against:
Batz, M, Baessler, S, Heil, W, et al., J Res Natl Inst Stand Technol. 2005;110(3):293–298.

Example: He3_cell(radius=0.1,length=.2,pressure=3,p3he=0.7,bx=0,by=1e-3,bz=0)

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
xwidth	m	width of box geometry	0
yheight	m	height of the box geometry	0
radius	m	radius of the cylinder / sphere geometry	0.11
length	m	length of the cylinder / box geometry along z	0.01
pressure	bar	pressure of the gas in the cell	3
p3he		polarisation of the 3He gas [-1 to +1]	0.7
bx	tesla	x component of field at the cell	0
by	tesla	y component of field at the cell	1e-3
bz	tesla	z component of field at the cell	0

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

Links

• Source code for He3_cell.comp.

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[ Identification | Description | Input parameters | Links ]

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Last Modified: Monday, 30-Jun-2025 11:05:09 CEST