Neutronic simulation of the seventh irradiation experiment at the Swiss spallation neutron source
Bibliographic record
Abstract
The SINQ Target Irradiation Program (STIP) is one of the important research projects performed at the Paul Scherrer Institute (PSI). The seventh experiment of the SINQ Target Irradiation Program (STIP-VII) was conducted with SINQ Target 10 from 2013 to 2014 and the total proton charge received by the target was 11.7 Ah. A radiation damage assessment was performed using MCNPX to predict the key radiation damage productions of displacement, helium and hydrogen for six materials, 9Cr-1Mo steel, Zry-2, Al, SiC, Ta and W, placed in different specimen rods. The incident proton source term for the assessment was produced with a gamma mapping measurement performed on the proton beam entrance window. The fluences of protons and neutrons as well as the energy deposition in the SINQ Target 10 were calculated. At an average proton beam current of 1.45 mA, the peak proton and neutron fluxes are 2.28 × 10 14 p/cm 2 /s and 5.60 × 10 14 n/cm 2 /s, respectively. The maximum irradiation dose and helium productions for steel specimens are 26.5 dpa and 2240 appm, respectively.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 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 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".