On-sun testing of a 100-shingled-cell dense receiver array at ∼50 W/cm2 using overlapped single-axis foci
Bibliographic record
Abstract
Dish CPV can achieve high concentration at low cost by overlapping the foci of single-axis mirrors into an oblong compound focus, which secondary optics can convert to a rectangular focus with even intensity on its major axis. The resulting focus is suitable for a dense receiver array with rows of cells-in-parallel on the minor axis with the rows themselves in series along the major axis. A dense receiver array was previously proposed in which multiple receiver segments are covered with rows of CPV cells that are shingled to minimize gaps in the photoreceptive surface. Segments are built on thermal-expansion-matched micro-channel cold plates for up to 1000× concentration. Segments share a coolant manifold and a steel housing with cooled secondary mirrors, so a receiver with hundreds of cells can be handled in-field as a unit. The first receiver segments have been built, populated with cells and flash-tested, and the first segment has been installed in a receiver and tested on sun at up to 50 W/cm2 at the focus of a multiple-single-axis-mirror dish.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".