Safety critical monitoring for prompt radiation hazards
Bibliographic record
Abstract
At TRIUMF we have used both passive and active methods to protect against potential prompt radiation hazards produced by accidental beam losses in high-intensity proton beam lines. These methods consist of shielding, exclusion areas, and the use of fast acting radiation monitors. The latter are located within the shielded areas and are set to terminate beam production on the detection of abnormal beam loss. A recent risk analysis has suggested a need for higher reliability in the protection against potential prompt radiation hazards where the shielding is relatively thin. To address this requirement TRIUMF has developed a new approach using two systems of independent and redundant monitoring devices located outside the shielding to protect against safety critical events with the required level of reliability. Verification of the system reliability is achieved by weekly testing of the safety critical monitors as well as the trip devices. When used in conjunction with the traditional beam loss monitors we are able to distinguish between safety critical events and non-safety critical beam trips.
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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".