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&FIELD: CHECK


bins

The number of bins in the histograms produced by the MAXWELL option.

By default: 100 bins.


eps_Maxwell

The epsilon used to compute differentials when comparing dV/dx and -Ex.

This parameter is by default set to 1.0E-3.


eps_wire

The spacing parameter for the Neville extrapolation of the points used to get an estimate of the potentials and the field at the wire surface.

This parameter is by default set to 1.0E-5.


FULL

Switches on all four options: MAXWELL, PLANE, TUBE and WIRE.

MAXWELL

When this option is selected, tables showing the divergence of the electric field, the difference between dV/dx and Ex, between dV/dy and Ey and the divergence of the magnetic field are printed. In addition, a set of histograms containing related data is plotted.

The options PRINT and PLOT can be used to reduce the volume of output. The histograms produced via this option can be saved with the KEEP-RESULTS option.


PLANES

Compares the potential given to the planes with the potential calculated near the field.

TUBE

Computes the potential and the field near the surface of the tube and also prints a check-sum of the charges and the field integral around the tube.

WIRES

Compares the potential given to the wires with the potential extrapolated to the wire surface. In addition, the electric field on the wire surface is printed - a quantity sometimes used to estimate the amplification of the wire.

If you wish to store these results in global variables, then use the KEEP-RESULTS option.


CHARGES

Verifies that the net flux of the electric field around the 3-dimensional charges matches the charge of these objects.

KEEP-RESULTS

When this option is selected, the surface field and potential on the selected wires are stored as matrices called EX_n, EY_n, E_n, V_n and PHI_n. Also, the histograms from the MAXWELL option are kept.

In case these global variables are already in use, then their contents will be lost.

You have to declare the Global variables before the loop if

This can be accomplished by assigning them an arbitrary value. Declaring is not required if the variables are only used outside the loop, in procedure Calls, in Say statements or for substitution in normal input statements.

[The output is not kept by default.]


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Formatted on 0100-09-02 at 06:56.