- 5 + 4 staves in two batches
delivered at Genoa, worked for the final machining, equipped with supports
and glass balls;
- Measurements
defined in ATL-IP-QP-0011 (TMT thickness, hole offsets...), ATL-IP-QP-0012
(stability and dimensional acceptance), ATL-IP-QP-0024 (transverse
thermo-conductivity) have been completed;
- The
measurements are visible in the stave
page as histograms and for the major parameters as digits;
- The
staves 4006 and 4008 have shown planarity values
larger than the acceptance limits ( 50 µm). The planarity is got from 18
measured points/plane arranged on three lines 6 points/line. As you can
see from the histograms, these values are induced by a single positive (a
hill not a hole) measured point. The visual inspection shown a glue spot for the 4006 and a
small fragment of magic adesive tape for the
4008.
----->
do not stick anything on the planes of the stave <-----
- Having
removed the rubbish, the planarity values withdrawn below the acceptance
limit 4006b;
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