Diamond detector irradiation tests at TRIUMF
Bibliographic record
Abstract
Polycrystalline chemical vapour deposition (pCVD) diamond detectors are being considered for an upgrade of Forward Calorimetry in the ATLAS detector at the CERN LHC. In order to determine their radiation hardness, four detectors were continuously monitored during irradiation with 500 MeV protons at TRIUMF to a fluence of 2.25 x 10 17 protons/cm 2 . All four detectors worked at the end of the irradiation period. The detector response A as a function of fluence has been fitted to a sum of two exponentials and to a function A = a o /(1+ a 1 ϕ) where a o is the initial response and ϕ is the fluence with a 1 = 9.8 x 10 −17 ± 3.2 x 10 −18 cm 2 /proton. At the end of irradiation the response had reduced to five percent of the original value. The time resolution was found to be ∼ 250 picoseconds.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.002 |
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".