Numerical simulations of the soft X-ray signals for determination of radial locations of the magnetic islands in the STOR-M tokamak
Bibliographic record
Abstract
A novel soft X-ray (SXR) data analysis technique has been recently developed and applied to the SXR data from the STOR-M tokamak to determine the radial locations of rotating magnetohydrodynamic (MHD) modes by examining the difference signals between two neighboring SXR channels [Rev. Sci. Instrum. 2011, 82, 053503]. In the simulations presented in this paper, the realistic SXR viewing angles and different SXR emissivity models are included. Comparison is made for two emissivity models: (a) a model with a constant SXR emissivity within the island and zero background equilibrium emissivity outside the island and (b) Gaussian emissivity perturbation inside the island with the parabolic background equilibrium emissivity distribution. Simulations with both emissivity profiles reveal the same criteria for determination of the radial position of the magnetic islands: (a) the phase reversal of the oscillations in the difference signals and (b) increase in the oscillation amplitude near the island. The results demonstrated the robustness of the techniques suitable for various kinds of emissivity perturbations due to rotating magnetic islands.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".