Front-end electronics for the RatCAP mobile animal PET scanner : timing discriminator and 32 line address priority serial encoder
Why this work is in the frame
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Bibliographic record
Abstract
We report on the development of the integrated front-end electronic for the RatCAP (Rat Conscious Animal PET). The RatCAP is a head-mounted, APD-based portable positron emission tomography scanner intended to perform brain imaging and behavioral studies of the awake rat. This paper focuses on the development and characterization of the zero-crossing discriminator (ZCD) and the 32 line address serial encoder for the miniature scanner. The ZCD, used as a time pick-off circuit for each APD detector, has a power consumption of only 300 /spl mu/W. The 32 line address serial encoder is used to multiplex the timing edge of every channel together with its address into a single output. The ASIC, realized in a CMOS 0.18 /spl mu/m process, has a maximum power dissipation of 125 mW. The electronic timing jitter, the time walk and the coincidence timing resolution of the ZCD measured at the encoder output are presented.
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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 | 0.001 | 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 | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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 it