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Idea Re: Twin lead twisted cable 

Forum: Industrial instruments
Re: Question Twin lead twisted cable (Matus Saro)
Date: 27 Mar, 2015
From: Michael H. Kelsey <Michael H. Kelsey>

On Fri, 27 Mar 2015 13:45:51 GMT, Matus Saro wrote:
 > I would like to ask how can I draw Twin lead twisted cable.

Does your simulation really require the fine grained details (sub-mm) of the two separate leads with their insulation? Or do you just need to deal with the total material occupying the space of the cable?

If it does not, then just create an "average" or "smeared" version of the lead, using perhaps G4EllipticalTube made of the insulation, with another G4EllipticalTube daughter made of the copper (or aluminum, or whatever) wire material.

If you really need to construct the complex twisted shape, you may be able to do it with a mother volume of G4TwistedBox, and a pair of G4TwistedTube, one for each lead. You'll need to do some careful calculations to get the pitch angles and phases correct for the three volumes.

These various solids are defined in section 4.1.2 of the G4 Application Developer's Guide.

  -- Michael Kelsey

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