MHD-stable QI stellarators: compactness versus simple coils

Find a Pareto set of MHD-stable quasi-isodynamic stellarator boundaries that trades compactness against coil simplicity.

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	1	+{
	2	+ "domain": "engineering-energy",
	3	+ "topics": [
	4	+ "fusion-energy"
	5	+ ],
	6	+ "type": "design",
	7	+ "benchmark": {
	8	+ "task": "Pareto set of MHD-stable QI stellarators: aspect ratio vs gradient scale length",
	9	+ "metric": {
	10	+ "name": "Hypervolume of feasible (−L∇B, A), reference (1, 20)",
	11	+ "better": "higher"
	12	+ },
	13	+ "baseline": {
	14	+ "name": "Best on the ConStellaration leaderboard (Wenyang Li)",
	15	+ "score": 248.227515058408
	16	+ }
	17	+ },
	18	+ "source": {
	19	+ "key": "constellaration",
	20	+ "name": "ConStellaration",
	21	+ "url": "https://github.com/proximafusion/constellaration/blob/v0.2.6/src/constellaration/problems.py#L267",
	22	+ "id": "mhd_stable",
	23	+ "curator": "Proxima Fusion",
	24	+ "poser": "Proxima Fusion (Cadena et al., 2025)",
	25	+ "status": "open",
	26	+ "as_of": "2026-10-20",
	27	+ "catalog": "0521c19bbd38"
	28	+ }
	29	+}