Units Outputs

This page is generated from in-code XGC I/O metadata by utils/python/document_outputs.py.

Unit-conversion and normalization metadata written by XGC.

The non-ADIOS units.m and units.txt helper files are not generated through the XGC I/O wrapper and remain outside this generated table.

xgc.units.bp

Variable	Units	Description
diag_1d_period	Positive integer	Input parameter diag_1d_period, i.e. output frequency of 1D diagnostics.
eq_axis_b	T	Magnetic field at the magnetic axis
eq_axis_r	m	Major radius at the magnetic axis
eq_axis_z	m	Height at the magnetic axis
eq_den_v1	\(\mathrm{m^{-3}}\)	Plasma density of eq_den_v1. This value gives a characteristic density value ONLY when an analytic profile is used.
eq_tempi_v1	eV	Ion temperature of eq_tempi_v1. This value gives a characteristic temperature value ONLY when an analytic profile is used.
eq_x_psi	\(\mathrm{ T m^2 }\)	Poloidal flux (over \(2\pi\)) at the (first) X-point
eq_x_r	m	Major radius at the (first) X-point
eq_x_z	m	Height at the (first) X-point
sml_dt	\(\mathrm{s}\)	Time step \(\Delta t\) in seconds. Note that the unit is different from the input parameter sml_dt which is given in units of toroidal transit time.
sml_totalpe	Positive integer	Number of MPI processors
sml_tran	\(\mathrm{s}\)	Ion transit time of [sml_en_order_kev] main ion. \(\frac{2 \pi R}{\sqrt{2 E/m}}\)
sml_wedge_n	Positive integer	Number of wedges of simulation domain to cover \(2\pi\).
sp_name + "_ptl_charge_eu"	\(e\)	Input parameter ptl_charge_eu, i.e., the species charge number (charge in units of elementary charge \(e\)).
sp_name + "_ptl_mass_au"	\(u\)	Input parameter ptl_mass_au, i.e., the species mass in atomic mass units (hydrogen mass \(m_{\mathrm{H}}~\approx~1u\)).