PROTON IRRADIATION SAMPLE HOLDER II (PISH II)
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In recent years, the Canadian and international nuclear industries have been bustling with activity in reactor refurbishments and research in new reactors. The Reactor Material Testing Laboratory (RMTL) at Queen’s University plays a significant role in material research that has applications in extending the lifetime of existing reactors, as well as the evolution of new nuclear reactors. The tandem accelerator in RMTL is used to simulate the radiation damage and changes to materials occurring in a nuclear reactor. Previously, it used the sample holder known as PISH I to hold samples during proton or alpha particle irradiation. The sample holder controls the temperature of the sample along with monitoring the beam current during experiments. \nThis thesis explores the design and implementation of a new sample holder named PISH II. It improves upon the accuracy of temperature and beam current measurements by adding a thermal camera and secondary electron suppression plate to the system. PISH II includes a complete redesign of the edge detector that allows easy adjustment of beam size, as well as a universal sample stage that provides the capability to mount various sample shapes such as a bulk plate, thin foils, narrow strips and C-shape samples. \nAdditionally, a foil testing apparatus was developed as an add-on system to PISH II to test the aluminum foils that could potentially be used in RMTL’s Proton Irradiation Tensile Rig (PITR). A 75 μm aluminum foil was irradiated on the foil testing apparatus by a 6 MeV and 10-20 μA proton beam while under pressure. At a current of 20 μA, the foil ruptured and failed due to material weakening secondary to thermal effects and potential irradiation damage.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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