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Fix definition of b0 in vmec output #1012

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May 8, 2024
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Fix definition of b0 in vmec output #1012

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4 changes: 2 additions & 2 deletions desc/vmec.py
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Original file line number Diff line number Diff line change
Expand Up @@ -268,7 +268,7 @@
data_quad = eq.compute(
["R0/a", "V", "<|B|>_rms", "<beta>_vol", "<beta_pol>_vol", "<beta_tor>_vol"]
)
data_axis = eq.compute(["G", "p", "R", "<|B|^2>"], grid=grid_axis)
data_axis = eq.compute(["G", "p", "R", "<|B|^2>", "<|B|>"], grid=grid_axis)

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data_lcfs = eq.compute(["G", "I", "R", "Z"], grid=grid_lcfs)
data_half = eq.compute(
[
Expand Down Expand Up @@ -488,7 +488,7 @@
b0 = file.createVariable("b0", np.float64)
b0.long_name = "average B_tor on axis"
b0.units = "T"
b0[:] = data_axis["G"][0] / data_axis["R"][0]
b0[:] = data_axis["<|B|>"][0]

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betaxis = file.createVariable("betaxis", np.float64)
betaxis.long_name = "2 * mu_0 * pressure / <|B|^2> on the magnetic axis"
Expand Down
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