  The centrifugal mirror confinement scheme incorporates supersonic rotation of
a plasma into a magnetic mirror device. This concept has been shown
experimentally to drastically decrease parallel losses and increase plasma
stability as compared to prior axisymmetric mirrors. MCTrans++ is a 0D scoping
tool which rapidly models experimental operating points in the Centrifugal
Mirror Fusion Experiment (CMFX) at the University of Maryland. In the
low-collisionality regime, parallel losses can be modeled analytically. A
confining potential is set up that is partially ambipolar and partially
centrifugal. Due to the stabilizing effects of flow-shear, the perpendicular
losses can be modeled as classical. Radiation losses such as Bremsstrahlung and
cyclotron emission are taken into account. A neutrals model is included, and,
in some circumstances, charge-exchange losses are found to exceed all other
loss mechanisms. We use the SUNDIALS ARKODE library to solve the underlying
equations of this model; the resulting software is suitable for scanning large
parameter spaces, and can also be used to model time-dependent phenomena such
as a capacitive discharge. MCTrans++ has been used to verify results from prior
centrifugal mirrors, create an experimental plan for CMFX, and find
configurations for future reactor-scale fusion devices.
