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Measurement of mesh tension on the L-chamber drift panels

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

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  1. Measurement of mesh tensionon the L-chamber drift panels Fabian Kuger December 10th2013 Weekly Micromegas meeting - CERN

  2. 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

  3. 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

  4. Results L2 (old) MM Weekly Meeting - CERN

  5. Results L3 MM Weekly Meeting - CERN

  6. 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

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