Initializers#

Since numerical equilibria have their own parameters for R and B0, stored in the respective dataset, we should use those to define our normalized units. Initializers do that job for as. They find those values in the dataset, create the Quantity Constructor and return it. They also create the correct Quantities for R and B0, which we can grab whenever we need them. However, the particle species is up to us.

Examples#

>>> import gcmotion as gcm
>>>
>>> # Quantity Constructor
>>> species = "T"
>>> smart_init = gcm.SmartPositiveInit(species)
>>> Q = smart_init.QuantityConstructor()
>>>
>>> # Quantities, with units and everything
>>> R = smart_init.R
>>> a = smart_init.a
>>> B0 = smart_init.B0

Note#

The “a” Quantity is purely decorative. It simply shows the horizontal distance of the magnetic axis to the outer wall edge (θ=0). In analytic equilibria we need it to define \(psi_wall\), but here \(psi_wall\) is defined inside the dataset. In both cases, a isn’t used in any further calculations.

Available Initializers#

A seperate initializer is needed for every numerical equilibrium, but they work in the exact same way

Smart - Positive

SmartPositiveInit

Smart - Negative

SmartNegativeInit

Smart - Negative 2

SmartNegative2Init

DTT - Positive

DTTPositiveInit

DTT - Negative

DTTNegativeInit
class gcmotion.SmartPositiveInit(species: str)#

Imports the necessary constants (R, B0, \(\psi_{wall}\)) from the Smart - Positive dataset to initialize the Quantity Constructor.

The particle’s species must be defined by the user, while the rest of the Quantities are already stored in the dataset.

Dataset location should be at gcmotion/tokamak/reconstructed/smart_positive.nc

Parameters:
species{‘p’, ‘e’, ‘D’, ‘T’, ‘He3’, ‘He4’}

The particle’s species. This field is case-insensitive.

Methods

QuantityConstructor()

Return the Quantity Constructor Q, defined with the datasets parameters.
class gcmotion.SmartNegativeInit(species: str)#

Imports the necessary constants (R, B0, \(\psi_{wall}\)) from the Smart - Negative dataset to initialize the Quantity Constructor.

The particle’s species must be defined by the user, while the rest of the Quantities are already stored in the dataset.

Dataset location should be at gcmotion/tokamak/reconstructed/smart_negative.nc

Parameters:
species{‘p’, ‘e’, ‘D’, ‘T’, ‘He3’, ‘He4’}

The particle’s species. This field is case-insensitive.

Methods

QuantityConstructor()

Return the Quantity Constructor Q, defined with the datasets parameters.
class gcmotion.SmartNegative2Init(species: str)#

Imports the necessary constants (R, B0, \(\psi_{wall}\)) from the Smart - Negative 2 dataset to initialize the Quantity Constructor.

The particle’s species must be defined by the user, while the rest of the Quantities are already stored in the dataset.

Dataset location should be at gcmotion/tokamak/reconstructed/smart_negative2.nc

Parameters:
species{‘p’, ‘e’, ‘D’, ‘T’, ‘He3’, ‘He4’}

The particle’s species. This field is case-insensitive.

Methods

QuantityConstructor()

Return the Quantity Constructor Q, defined with the datasets parameters.
class gcmotion.DTTPositiveInit(species: str)#

Imports the necessary constants (R, B0, \(\psi_{wall}\)) from the DTT - Positive dataset to initialize the Quantity Constructor.

The particle’s species must be defined by the user, while the rest of the Quantities are already stored in the dataset.

Dataset location should be at gcmotion/tokamak/reconstructed/dtt_positive.nc

Parameters:
species{‘p’, ‘e’, ‘D’, ‘T’, ‘He3’, ‘He4’}

The particle’s species. This field is case-insensitive.

Methods

QuantityConstructor()

Return the Quantity Constructor Q, defined with the datasets parameters.
class gcmotion.DTTNegativeInit(species: str)#

Imports the necessary constants (R, B0, \(\psi_{wall}\)) from the DTT - Negative dataset to initialize the Quantity Constructor.

The particle’s species must be defined by the user, while the rest of the Quantities are already stored in the dataset.

Dataset location should be at gcmotion/tokamak/reconstructed/dtt_negative.nc

Parameters:
species{‘p’, ‘e’, ‘D’, ‘T’, ‘He3’, ‘He4’}

The particle’s species. This field is case-insensitive.

Methods

QuantityConstructor()

Return the Quantity Constructor Q, defined with the datasets parameters.