Gain stabilization and pulse-shape discrimination in a thermally-variant environment for a hand-held radiation monitoring device utilizing Cs<sub>2</sub>LiYCl<sub>6</sub>:Ce<sup>3+</sup> (CLYC) scintillator
Bibliographic record
Abstract
We have utilized CS2LiYCl6:Ce3+(CLYC) scintillators in a hand-held instrument for radioisotope identification, known as the Advanced Radiation Monitoring Device (ARMD). The CLYC crystals in ARMD are each read out by a PMT and custom electronics designed to exploit CLYC's pulse-shape discrimination (PSD) capabilities. ARMD is designed to function in temperatures ranging from -20 to +500°C. CLYC scintillation emission light yield and pulse shapes are a function of temperature, due to the thermal dependence of the responsible scintillation mechanisms. Additionally, PMT gain and electronics readout also exhibit temperature dependence. Gain stabilization and compensation for varying waveform profiles are therefore necessary for robust isotope identification and PSD. We present the results of a complete thermal cycle over the specified range on an ARMD core detector module and describe our method of gain stabilization and PSD compensation to account for thermallydependent waveform profiles.
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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 | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".