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Optical measurements

This time metrology file has all coordinates in mm (milimeters with rounding up to 10 um...

Quality check

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)    dz3(um)

Quad  0
pair: 0   20910   20910    -180    -180     43550   43540      90      80   -0.00413   -0.23684   48304   48306      -2       0      10     99.997
pair: 1   20920   20920    -200    -200     43560   43630      10      80   -0.00459   -0.26285   48309   48401     -92       0     -70    100.033
pair: 2   20910   20100      10     820     43550   43540      10       0    0.00011    0.00658   47960   48305    -345    -810      10   1724.336
pair: 3   20910   20900    -140    -130     43540   43530     -60     -70   -0.00310   -0.17767   48294   48294       0     -10      10      9.995
pair: 4   20900   20910    -220    -210     43540   43550      90     100   -0.00494   -0.28289   48296   48311     -15     -10     -10    -69.579
pair: 5   20920   20900      40      20     43200   43550     -20     330    0.00069    0.03968   48304   47999     305      20    -350     34.059
pair: 6   20910   20910    -130    -130     43530   43540     -70     -60   -0.00299   -0.17109   48294   48298      -4       0     -10      0.002
pair: 7   20910   20909    -130    -129     43540   43540     -60     -60   -0.00297   -0.17041   48302   48298       4      -1       0    -30.000
  • pair 2: 1.7mm un-flatness in Z(warning).  Most likely point 13 Z=−1.76 is a wrong value, but there is no method to check...;  do not care about Z for now
  • pair 2: 0.8mm deviation in X: Correction to point 16: x−0.8mm;  44.63 => 43.83
  • pair 5: 0.35mm deviation in X: Correction to point 24: x+0.35mm;  90.62 => 90.97

Corrected metrology file:

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)    dz3(um)

Quad  0
pair: 0   20910   20910    -180    -180     43550   43540      90      80   -0.00413   -0.23684   48304   48306      -2       0      10     99.997
pair: 1   20920   20920    -200    -200     43560   43630      10      80   -0.00459   -0.26285   48309   48401     -92       0     -70    100.033
pair: 2   20110   20100      10      20     43550   43540      10       0    0.00011    0.00658   47960   47964      -4     -10      10   1790.448
pair: 3   20910   20900    -140    -130     43540   43530     -60     -70   -0.00310   -0.17767   48294   48294       0     -10      10      9.995
pair: 4   20900   20910    -220    -210     43540   43550      90     100   -0.00494   -0.28289   48296   48311     -15     -10     -10    -69.579
pair: 5   20920   20900      40      20     43550   43550     -20     -20    0.00069    0.03947   48304   48314     -10      20       0     19.974
pair: 6   20910   20910    -130    -130     43530   43540     -70     -60   -0.00299   -0.17109   48294   48298      -4       0     -10      0.002
pair: 7   20910   20909    -130    -129     43540   43540     -60     -60   -0.00297   -0.17041   48302   48298       4      -1       0    -30.000

Geometry parameters

Parameters for center and tilt are available in

/reg/neh/home1/dubrovin/LCLS/CSPadAlignment-v01/calib-mec-2013-12-20/*/0-end.data

 

Summary

  • X coordinates are corrected for points 16 and 24
  • point 13 Z=−1.76 is suspicious, but there is no hint how to correct... May be 2x1 is badly bent...(smile)

 

References

 

 

 

 

 

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