Power supply design considerations for maintaining a minimum sustaining current in a vortex water wall high pressure argon arc lamp
Bibliographic record
Abstract
Vortex water wall high-pressure argon arc lamps are used to generate intense light and are capable of operating at radiative efficiencies greater than 50%. These lamps are being considered for use in a pulsed DC mode of operation in the next generation of rapid thermal processing applications. The results of a series of experiments have shown that the breakdown to arc transition consists of a prethermionic electrode emission phase and a nonlocal thermodynamic equilibrium positive column phase. The large dynamic voltage and current range between the breakdown phase and the arc phase necessitates the use of the following power circuit topologies: a high voltage ignition circuit connected in series with an arc sustaining power source; and an arc sustaining current source consisting of a step down hysteresis current controlled DC/DC power converter cascaded with a constant off-time output voltage controlled step up DC/DC power converter. The current controlled power converter supplies the minimum arc sustaining current whereas the step-up power converter provides the minimum post ignition pre-arc positive column voltage. A switch placed across the high voltage supply is closed after ignition and allows a reduction of the current ratings of the high voltage circuit components. Finally experimental verification of the circuit operation and design guidelines are provided.
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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".