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An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector

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Giacomo Sguazzoni (CERN, Geneva, Switzerland)

Instrumentation and Detectors · Submitted 16 May 2002

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The implementation of a time-dependent correction on the alignment by using the laser system data led to sizeable improvements on the ALEPH data quality.

how it is stated · asserted 1.00 read the record →

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arXiv IDphysics/0205047 (version 1)
Pith ID5WCV4FXS, Pith's permanent record of this paper and its review
CitationGeneva, Giacomo Sguazzoni (CERN, Switzerland). "An Unexpected Effect in ALEPH: Long-Term Displacements of the Silicon Vertex Detector." arXiv:physics/0205047 (2002). https://pith.science/paper/5WCV4FXS
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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,188 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.12 · human participants 0.02 · controlled comparison 0.10 · randomized assignment 0.01 · states quantitative result 0.98 · compares with prior results 0.33 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

The ALEPH Silicon Vertex Detector for LEP2 featured a laser survey system to monitor its mechanical stability. The analysis of laser system data from 1997 to 2000 showed that VDET suffered a time-dependent displacement. It resulted to be compatible with a deformation of the support structure that made the device to slowly rotate during the data-taking. A maximal local displacement of ~20 microns was observed, corresponding to a rotation of ~10E-4 rad. The implementation of a time-dependent correction on the alignment by using the laser system data led to sizeable improvements on the ALEPH data quality.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 The ALEPH Silicon Vertex Detector for LEP2 featured a laser survey system to monitor its mechanical stability. background 0.81 0.25 0.03 asserted 1.00
s1 The analysis of laser system data from 1997 to 2000 showed that VDET suffered a time-dependent displacement. result 0.91 0.91 0.30 asserted 1.00
s2 It resulted to be compatible with a deformation of the support structure that made the device to slowly rotate during the data-taking. interpretation 0.93 0.83 0.29 hedged possibility 0.51
s3 A maximal local displacement of ~20 microns was observed, corresponding to a rotation of ~10E-4 rad. result 1.00 0.91 0.15 asserted 1.00
s4 The implementation of a time-dependent correction on the alignment by using the laser system data led to sizeable improvements on the ALEPH data quality. result 0.77 0.89 0.60 asserted 1.00

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from analysis of existing data 0.80.

What was examined, and what was not

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  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
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  • P abstract
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  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

The ALEPH Silicon Vertex Detector for LEP2 featured a laser survey system to monitor its mechanical stability. The analysis of laser system data from 1997 to 2000 showed that VDET suffered a time-dependent displacement. It resulted to be compatible with a deformation of the support structure that made the device to slowly rotate during the data-taking. A maximal local displacement of ~20 microns was observed, corresponding to a rotation of ~10E-4 rad. The implementation of a time-dependent correction on the alignment by using the laser system data led to sizeable improvements on the ALEPH data quality.

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