Complete integration over the cloud of the local distance to the wire divided by the local drift velocity.
The longitudinal diffusion over the remaining distance to the wire is added to the estimate.
The longitudinal diffusion over the remaining distance to the wire is added to the estimate.
[This is currently the default method.]
The longitudinal diffusion over the remaining distance to the wire is added to the estimate.
The longitudinal dimension is in principle the dimension that matters, but in the presence of a strong magnetic field, the cloud rapidly rotates near the wire. At the same time, the cloud stretches to the point of becoming almost one-dimensional. A small rounding error in the cloud alignment, can make the dimension along the axis pointing to the wire, very small.
For this reason, this method is not recommended, unless the cloud trap radius is very large (in which case the velocity estimates are likely to be inaccurate).
The longitudinal diffusion over the remaining distance to the wire is added to the estimate.
For reasons explained under LONGITUDINAL-DIMENSION, this method must be considered superior, provided the cloud-trap radius is small.
Formatted on 21/01/18 at 16:55.