Pith Number

pith:HWEEGCSA

pith:2026:HWEEGCSA5M4DUKPT5SFSMYPBMM

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Comparative blobs and holes dynamics in a tokamak plasma: deep learning analysis of fast imaging data

F Brochard (IJL), H Aksoy (IJL), J Cavalier, M Desecure, N Lemoine (IJL), S Chouch\`ene (IJL)

Most negative structures in tokamak plasma images are artifacts from sliding-median subtraction rather than real holes.

arxiv:2605.18310 v1 · 2026-05-18 · nlin.CD

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\usepackage{pith}
\pithnumber{HWEEGCSA5M4DUKPT5SFSMYPBMM}

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3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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Claims

C1strongest claim

Our work suggests that the majority of negative structures resulting from data pre-processing are artefacts produced by the latter. However, a basic approach that only retains supernumerary negative structures shows that the behaviour of the latter is consistent with that expected for holes, opening new perspectives for their investigation.

C2weakest assumption

The sliding-median subtraction step isolates genuine physical fluctuations without systematically generating artifactual negative structures whose dynamics mimic those of blobs.

C3one line summary

Deep learning analysis of fast imaging data indicates most negative fluctuation structures in COMPASS tokamak plasma are artifacts from sliding-median subtraction, while supernumerary negatives exhibit expected hole dynamics.

References

17 extracted · 17 resolved · 1 Pith anchors

[1] Ben Ayed N, Kirk A, Dudson B, Tallents S, Vann R G L, Wilson H R and the MAST team 2009 Plasma Phys. Control. Fusion 51 035016–40 2009

[2] Plasma 18 060501–49 2011

[3] Plasma Physics 74 679–717 2008

[4] Krasheninnikov S I et al 2003 Proceedings of the 19th IAEA Fusion Energy Conference, Lyon, France, IAEA-CN- 94/TH/4-1 2003

[5] Hasegawa H and Ishiguro S 2017 Nuclear Fusion 57 116008–15 2017

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:05:54.487083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d88430a40eb383a29f3ec8b2661e1632f6009b25d83466513caacce33db7038

Aliases

arxiv: 2605.18310 · arxiv_version: 2605.18310v1 · doi: 10.48550/arxiv.2605.18310 · pith_short_12: HWEEGCSA5M4D · pith_short_16: HWEEGCSA5M4DUKPT · pith_short_8: HWEEGCSA

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HWEEGCSA5M4DUKPT5SFSMYPBMM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3d88430a40eb383a29f3ec8b2661e1632f6009b25d83466513caacce33db7038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7afe4627ce773f2772e184adc401c08488d43cdb8f3acfad102749dca6c3aef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2026-05-18T12:28:24Z",
    "title_canon_sha256": "ae41348e4bb974035d8c78777442724ecb7efab8a941b3177b1e63556c4bcba8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18310",
    "kind": "arxiv",
    "version": 1
  }
}