New optical mount design for Canadian Light Source far infrared beamline
Bibliographic record
Abstract
The Canadian Light Source far infrared (IR) beamline uses seven mirrors to transport the IR light to the spectrometer experimental station (May et al. 2006). A new mirror mount provides more stability and precision control of mirror alignment. The design uses a gimbal arrangement that reflects the IR beam through 90°. Internal motor actuators for 2° of angular rotation (pitch and roll) and 1° of translation drive the mount. The two independent rotation axes intersect at the mirror centre to minimize translation offset when rotated. Translation along the incoming beam axis allows focus adjustment of the elliptical mirrors mounted. Beam steering using closed loop control with position feedback is precise and repeatable. Piezo-actuator tilting mirrors in an active optics system use this gimbal design for mounting. The design is compact and scales to the size of the mirror to be mounted; this allows installing new components into the existing chambers. We present features of the mount that include in-vacuum operation (Ultra High Vacuum (UHV) possible with change of motor type), economic materials and ability to handle heavy elements of 33 kg or more.
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How this classification was reachedexpand
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 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".