Philaus/CLT-IML-Dataset

CLT-IML Tokamak MHD Simulation Database

Access and use. This database is source-available for academic communication, inspection, and reproducibility assessment. It is not open data. Copyright (c) 2026 Zhejiang University. All rights reserved. Any use requires prior written permission from Zhejiang University or its duly authorized representative. See Terms of access and use.

Dataset summary

This dataset contains tabular scalar responses, sampled two-dimensional fields, test fields, and reference visualizations derived from CLT tokamak magnetohydrodynamic simulations. It supports the three surrogate-modeling tasks implemented in the companion CLT-IML code repository:

1. regression from equilibrium/profile parameters to scalar simulation outcomes;
2. pressure-crash regression and thresholded disruption classification; and
3. two-dimensional perturbation-field reconstruction with a neural operator.

The data are numerical simulation products and are not experimental plasma measurements. The CLT solver and complete raw outputs from the underlying simulation campaigns are not part of this dataset.

Associated manuscript

Manuscript title: Millisecond prediction of tokamak disruptions using a first-principles surrogate model (manuscript in preparation)

Authors: W. Zhang, Y. J. Ma, S. Z. Cai, Z. W. Ma, Z. M. Sheng, and Y. Zhang. W. Zhang and Y. J. Ma contributed equally. W. Zhang and Z. W. Ma are the corresponding authors.

Affiliations:

1. Institute for Fusion Theory and Simulation, School of Physics, Zhejiang University, Hangzhou 310027, China.
2. College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China.

Repository structure

.
├── Double_Tearing_Train_Database_Bisland_Ek.csv
├── Transferlearning_Database_Bisland_Database_Bisland.csv
├── pressure_crash_cls.csv
├── TMONet-test_by_p0.csv
├── Double_Tearing_Train_Database_by_p0.csv  # exact Task III train manifest
├── data_frame_by_p0/                         # dense field tables/reference plots
├── selected_B9_633/                          # sampled Task III training fields
└── TMON-test_by_p0/                          # Task III test fields/reference plots

The release includes the exact Task III training manifest used with the sampled fields. Every folder_name in that manifest resolves to one CSV in selected_B9_633/ after / and \ are replaced by __.

Primary tables

File	Rows	Purpose
Double_Tearing_Train_Database_Bisland_Ek.csv	195	Task I scalar-response data
Transferlearning_Database_Bisland_Database_Bisland.csv	24	Target-domain transfer-learning data
pressure_crash_cls.csv	246	Task II pressure-crash data
TMONet-test_by_p0.csv	22	Task III test-case manifest

Row counts exclude CSV headers.

Data fields

The scalar tables use combinations of p0, r1, r2, s1, and s2 as inputs. Targets include inner/outer magnetic-island widths, linear growth rate, kinetic energy, and central-pressure crash percentage. Field CSVs use spatial coordinates (X, Z or R, Z) and Value; sampled training fields also contain Gradient.

Coordinate shifts, axis swaps, normalization, logarithmic transforms, and target-extraction rules are implemented in the companion code repository. See its docs/DATA_AND_MODELS.md and extraction scripts before combining or reprocessing tables.

Intended uses

• reproducing the surrogate-model experiments in the associated manuscript;
• benchmarking scalar regression and neural-operator methods on CLT-derived simulation outputs;
• studying mappings between designed equilibrium parameters and MHD outcomes;
• validating or extending the supplied post-processing workflow.

Limitations

• Results are specific to the simulated configurations, parameter ranges, normalization, and CLT setup used to generate the database.
• The data should not be interpreted as direct experimental measurements or as a validated real-time control system.
• Extrapolation outside the sampled parameter domain is not guaranteed to be physically meaningful.
• Exact numerical reproduction can depend on software versions, hardware, and nondeterministic GPU operations.

Terms of access and use

Copyright (c) 2026 Zhejiang University. All rights reserved.

This database, including its tables, field data, manifests, visualizations, metadata, and organization, is made publicly viewable for academic communication, inspection, and reproducibility assessment. It is source-available, but it is not open data and is not released under a Creative Commons, Open Data Commons, or other open license. The license: other value in the dataset-card metadata denotes these custom, permission-required terms.

Public availability, downloading, or possession of a copy does not by itself grant permission to use the database. Except to the extent expressly permitted by applicable law, any use, reproduction, modification, adaptation, extraction, creation or publication of derived data or results, model training or evaluation, distribution, redistribution, sublicensing, deployment, commercialization, or other exploitation of all or any substantial portion of the database requires prior written permission from Zhejiang University or its duly authorized representative. Rights not expressly granted in a written permission or license agreement are reserved by Zhejiang University.

Permission to use the companion CLT-IML software does not automatically authorize use of this database, and permission to use the database does not automatically authorize use of the software. Requests for permission should be directed to Zhejiang University or its duly authorized representative and should identify the requester, institution, intended purpose, requested materials, and planned form of use.

THE DATABASE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, AND NONINFRINGEMENT. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, ZHEJIANG UNIVERSITY AND THE DATABASE CREATORS SHALL NOT BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY ARISING FROM, OUT OF, OR IN CONNECTION WITH THE DATABASE OR ITS USE.

Citation

Authorized users should cite the associated manuscript and identify the exact version or Hugging Face revision of the database used.