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Measurement of mesh tension on the L-chamber drift panels. Fabian Kuger December 10 th 2013 Weekly Micromegas meeting - CERN. Goal & Setup. Measure mesh tension, with respect to: absolute values (nominal value: 10 N/cm) in homogeneities / systematics Aspects not jet addressed

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measurement of mesh tension on the l chamber drift panels

Measurement of mesh tensionon the L-chamber drift panels

Fabian Kuger

December 10th2013

Weekly Micromegas meeting - CERN

goal setup
Goal & Setup

Measure mesh tension, with respect to:

  • absolute values (nominal value: 10 N/cm)
  • in homogeneities / systematics

Aspects not jet addressed

  • influence of spacer gluing process
  • QC of delivered, pre-stretched meshes
  • influence of panel gluing process

Setup:

  • horizontal setup of the drift panel (mesh upside)
  • panel supported on left & right edge (Al-bars)
  • measuring every 20cm on 5 (equal-spaced) lines along the panel

MM Weekly Meeting - CERN

instrument of measure
Instrument of measure
  • Reproducibility of all measurements on ±0.2 N/cm level
  • Small drift gap leads to touching on the drift panel at some measurement points

MM Weekly Meeting - CERN

results l2 old
Results L2 (old)

MM Weekly Meeting - CERN

results l3
Results L3

MM Weekly Meeting - CERN

ongoing work
Ongoing work…
  • Re-measure L2 panel after spacer gluing

 Influence of spacer gluing process?

  • Measure the pre-stretched meshes for MSW

 Enables us to measure influence of panel gluing process during MSW production

  • Need to agree on upper / lower limits for mesh tension

 Ideas of how to proceed & help are highly welcome

MM Weekly Meeting - CERN