,
 Determines which solver will be used in inverse simulation, see
Linear system equations solvers
, default is .
The default preconditioner is . 
 Specifies the parameters for the selected solver:
Number of maximal allowed iterations needed to solve one linear system
of equations ( “inner iterations” ), integer number,
default is 1000 (iterative solvers only).
If the controller adjusts the power of a heater, it will apply only
this fraction of all modifications. Real number between 0 and 1,
default is 0.5.
This positive parameter determines how strong the heater power is
taken into account in the quadratic cost function that has to be
minimized in order to fulfill the temperature constraints. Real number,
default is 1e06.
The controller starts to work when the temperature residuum is below
the given value. Real number, default is 0.005.
This parameter is used as one abortion criterion for inverse simulations. Once the norm of the residual of the energy equation has fallen below the specified value, it is investigated whether the required values at the control points are reached. If this is not the case, the user gets the corresponding information in the terminal. Now, it is investigated whether the maximum power change is smaller than the value of the minimum power criterion. If this is the case, the computations are stopped, even the temperature values at the control points are out of the specified tolerance. The idea is that nothing is changing anymore. The default value for the minimum power criterion is 1.e6 and SHOULD NORMALLY NOT BE CHANGED.

 Two conditions for updating the sensitivity matrix for the controller
can be specified:
Relative change of the residuum of the temperature equation at
which the sensitivity matrix will be updated.
Real number, default is 0.1.
Number of steps after which the sensitivity matrix for
the controller will be in any case updated.
Integer number, default is 10.

 There are two controllers available in CrysMAS:
Selects the more recent controller which respects power limits for
the heaters and allows tolerances for the control points (default).
Reactivates the old controller, which is more stable in some
situation.
