Small-Strip Thin Gap Chambers for the Muon Spectrometer Upgrade of the ATLAS Experiment
Bibliographic record
Abstract
The instantaneous luminosity of the Large Hadron Collider at CERN will be increased by about a factor of five with respect to the design value by an extensive upgrade program over the coming decade. The largest Phase-1 upgrade project for the ATLAS Muon System is the replacement of the present inner station in the forward regions with the New Small Wheels (NSWs) during the long LHC shutdown in 2019/20. Along with Micromegas, the NSWs will be equipped with eight layers of small-strip Thin Gap Chambers (sTGC) arranged in multilayers of two quadruplets. To retain the good precision tracking and trigger capabilities in the high-background environment of the high luminosity LHC, each sTGC plane must achieve a spatial resolution better than 100~μm to allow the Level-1 trigger track segments to be reconstructed with an angular resolution of approximately 1~mrad. The sTGC design, performance, construction and integration status will be discussed, along with results from tests of the chambers with nearly final electronics with beams and high-intensity radiation sources.
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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 | 0.000 | 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 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".