[ivconic]

Originally Posted by Fred

Ivconic,
They say the signal from a regular detector destroys the halo.So maybe the halo is much bigger than it looks and can be detected with a non-intrusive and more sensistive device.
You admit the existence of a halo but, still need to know the size.It could be strong in a localized point but extending weakly all around ...or in some direction

First we must know exact "hallo" features. All the details. Than it will be easy to project device for locating it.