AN ALTERNATIVE DESIGN CONCEPT FOR A I MHz BEAM CHOPPER FOR THE KAON FACTORY
Bibliographic record
Abstract
A high repetition rate ( lo6 discrete pulses/s) beam chopper operating at a 100% duty cycle is required to create holes in the beam for kicker magnet operation in the 5 rings in the proposed KAON Factory synchrotron. The results of prototype studies on a novel design for an energy efficient 150 kW beam chopper are described as the “reference” design in another paper at this conference [l]. Initial measurements are presented for an alternative method of pulse control which permits the deflection voltage to be twice the magnitude of the high voltage power supply level and thus twice that in the reference design. A 150 kW tetrode was mounted at the center of a 10 cm diameter low loss cable which is open circuit at one end and short circuit at the other end. In prototype tests at 3% duty factor, 7 kV electrical pulses were stored in the coaxial cable. By using a novel pulse control technique the magnitude of the stored pulses was quadrupled and the frequency at the open circuit end of the cable was halved. Results are shown in which the deflection voltage was 14 kV and rise and fall times were between 30 ns and 40 ns.
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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 | 0.001 |
| 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 | 0.001 | 0.001 |
| Open science | 0.002 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 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".