1

M3DC1 Outputs

Itor [MA] = 2.226

Ire [MA] = 4.610

Iohm [MA] = -2.394

Iohm2 [MA] = -2.383

Integrating over poloidal area:

4.67 MA

• Why is ohmic current or E-field negative?

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• Is this physical? Error in the calculation?

SPRC-m00-3D-04

3-D simulation with Ne MGI

2

Itor [MA] = 4.019

Ire [MA] = 4.773

Iohm [MA] = -0.680

Iohm2 [MA] = -0.754

Integrating over poloidal area:

SPRC-m00-3D-01

3-D simulation without impurities

3

t = 4273

t = 4208

*Using CC’s old compilation from Apr 2024

* No negative E-field

Things I have tried

1. Turn off primary sources; only avalanching
2. Revert to older M3D-C1 code commits
3. Force E-field to always be > 0

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4

*Simulation result did not change