Status Report on the TRIUMF Central Control System
Bibliographic record
Abstract
This paper presents the current status of the TRIUMF 500 Mev cyclotron s central control system (CCS). The original TRIUMF CCS employed Data General s Nova computers and for more than 20 years Nova CPUs were at the heart of the CCS. A modest upgrade project was commenced in earnest in 1993 to replace these Novas and accomplish several other goals. The status of the CCS is described now that the Novas are removed and the other goals have been largely met. The current hardware and software configurations are discussed and the experience gained during the upgrade is examined. Reliability, performance, error diagnosis, and the development environment are also described. 1 Introduction In 1968 TRIUMF was established as a physics laboratory jointly operated by a group of four Canadian universities. The primary accelerator is the 500 Mev cyclotron which is presently capable of producing four simultaneous beams of protons at various energies ranging from 180 to 520 Mev and currents ranging u...
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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 | 0.006 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.003 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.004 | 0.004 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.043 | 0.017 |
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".