simpeg.electromagnetics.frequency_domain.sources.CircularLoop

class simpeg.electromagnetics.frequency_domain.sources.CircularLoop(receiver_list, frequency, location=None, orientation='z', radius=1.0, current=1.0, n_turns=1, mu=1.25663706212e-06, **kwargs)

Bases: MagDipole

Circular loop magnetic source calculated by taking the curl of a magnetic vector potential. By taking the discrete curl, we ensure that the magnetic flux density is divergence free (no magnetic monopoles!).

This approach uses a primary-secondary in frequency in the same fashion as the MagDipole.

Parameters:

receiver_listlist of simpeg.electromagnetics.frequency_domain.receivers.BaseRx

A list of FDEM receivers

frequencyfloat

Source frequency

location(dim) np.ndarray, default: np.r_[0., 0., 0.]

Source location.

momentfloat

Magnetic dipole moment amplitude

orientation{‘z’, x’, ‘y’} or (dim) numpy.ndarray

Orientation of the dipole.

mufloat

Background magnetic permeability

orientationstr, default: ‘z’

Loop orientation. One of (‘x’, ‘y’, ‘z’)

radiusfloat, default: 1.0

Loop radius

currentfloat, default: 1.0

Source current

mufloat

Background magnetic permeability

Attributes

N	n_turns.N has been deprecated.
current	Source current
frequency	Source frequency
integrate	Integrated source term
location	Location of the dipole
moment	Dipole moment of the loop.
mu	Magnetic permeability in H/m
nD	Number of data associated with the source.
n_turns	Number of turns in the loop.
orientation	Orientation of the dipole as a normalized vector
radius	Loop radius
receiver_list	List of receivers associated with the source
uid	Universal unique identifier
vnD	Vector number of data.

Methods

bPrimary(simulation)	Compute primary magnetic flux density.
bPrimaryDeriv(simulation, v[, adjoint])	Compute derivative of primary magnetic flux density times a vector
ePrimary(simulation)	Compute primary electric field
ePrimaryDeriv(simulation, v[, adjoint])	Compute derivative of primary electric field times a vector
eval(simulation)	Return magnetic and electric source terms
evalDeriv(simulation[, v, adjoint])	Return derivative of the magnetic and electric source terms with respect to the model.
get_receiver_indices(receivers)	Get indices for a subset of receivers within the source's receivers list.
hPrimary(simulation)	Compute primary magnetic field.
hPrimaryDeriv(simulation, v[, adjoint])	Compute derivative of primary magnetic field times a vector
jPrimary(simulation)	Compute primary current density
jPrimaryDeriv(simulation, v[, adjoint])	Compute derivative of primary current density times a vector
s_e(simulation)	Electric source term (s_e)
s_eDeriv(simulation, v[, adjoint])	Derivative of electric source term with respect to the inversion model
s_m(simulation)	Magnetic source term (s_m)
s_mDeriv(simulation, v[, adjoint])	Derivative of magnetic source term with respect to the inversion model