Production

1
Production QA of BOL chambers

• Tomo results BOL0,2,3
• Comparison Tomo and QA data
• Production status

2
Xray Tomograph
Site grid parameters from BOL0
Analysis of Martin Woudstra
Results so-far (so-good!)
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3
RMS along chamber
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4
Closer Look
BOL 0

• BOL 0,2,3 similar results
• Y pitch between inner tube layers significantly
  larger 25 mm
• Probably due to glue shrink of black glue DP490
  1o x0.7mm
• also affects Y distance between ML 50 mm
• Y pitch between outer tube layer close to design

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5
RASNIK vs Tomograph
Rasnik on Xplate

• Study average Y,Z shifts of tube layers
• For RASNIK take average of two RASASS towers
  account for effect of Xplate sag
• For Tomograph Results BOL0,2,3 from analysis
  M.Woudstra (NIKHEF)

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6
Z shifts
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7
Sag Compensation
BOL2
Layer 1
Start -15/2 um

• During gluing of
• layer 1 and 2, significant changes in Xplate sag
  were observed
• Instable reduction valves?
• Effect of glue viscosity?

End -38/2 um
Layer 2
Start 30/2 um End 50/2 um
1 deg
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8
Y shifts
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9
Tube Position (GL) vs Tomo
Average Residuals from pre-glue laser
checks
4 chambers, 6 layers
Tomo
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10
Production Status
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11
Broken Wire
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12
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13
Y
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14
Z
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