Content

Optical measurement

Update

  • 2013-06-11 Modify script convertOpticalToStandard.py for indexing of rotated CSPAD
  • directly generated center_global/0-end.data constants
  • deployed to sxr65713

Note from Chris:
The new metrology file is attached.  It has some unique characteristics.
1) all the positions are the same for 3 of the 4 quadrants
2) only the values for Quad 0 have changed.
3) this was done by aligning the entire detector to about 30 microRadians by hand.
4) This was checked by recording the positions of a few points on the other three quads
5) The slight rotation between last weeks and this weeks metrology can be taken out using these extra data points

Procedure

  • Numeration of quads is still wrong by 180 degree... So, change the numeration in 2013-01-24-CSPAD-XPP-Metrology-standard.txt
  • Apply the same corrections of a couple of corners:
     Q1,p3:
     12   21331   47024      47 -> x+200, y-200
     12   21531   46824      47
     
     Q3,p5:
     24   90849   68979     218 -> x+300, y-200
     24   91149   68779     218
    

Or the same correction in 2013-01-29-CSPAD-XPP-Metrology.txt (2013-01-29-CSPAD-XPP-Metrology-corr.txt):

Quad 1
< 24      177872        164109  218 -> x+300, y-200
> 24      178172        163909  218

Quad 3
< 31      90737 42743   37-> x+200, y-200
> 31      90937 42543   37

QC procedure and results

We calculate
S1 - 1st short side length of 2x1
S2 - 2nd short side length of 2x1
L1 - 1st long side length of 2x1
L2 - 2nd long side length of 2x1
D1 - 1st diagonal of 2x1 between corners 1 and 3
D2 - 2nd diagonal of 2x1 between corners 2 and 4
dS and dL are the deviations of the 1st and 2nd corner along the short and long sides, respectively. The sign of all dS are chosen in order to provide correct sign for the tilt angle (the same direction for all 2x1 sensors).
<dS/L> - the tilt angle of 2x1 averaged over two sides in radians.
angle(deg) - the same angle in degrees.
dD = D1 - D2
d(dS) = dS1 - dS2
d(dL) = dL1 - dL2

Quality check parameters for the perfect measurement:

  • S1=S2, L1=L2 - the 2x1 sides should have equal length and width,
  • D1=D2 - the 2x1 diagonals should be equal,
  • dS1 = dS2 = 2*dL1 =2*dL2 - tilt angle should provide consistent deviation for all corners,
  • dD=0, d(dS)=0, and d(dL)=0 - within precision of measurement.

Everything, excluding <dS/L> and angle(deg), are in micrometers.

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
Quad  0
pair: 0   20891   20913     200     222     43539   43541    -102    -100    0.00485    0.27766   48298   48297       1     -22      -2
pair: 1   20910   20894     293     277     43540   43535    -127    -132    0.00655    0.37506   48302   48289      13      16       5
pair: 2   20890   20906      99      83     43536   43536      42      42    0.00209    0.11976   48290   48293      -3      16       0
pair: 3   20897   20895     131     133     43545   43543      65      63    0.00303    0.17369   48299   48297       2      -2       2
pair: 4   20911   20896     -30     -45     43549   43547      17      15   -0.00086   -0.04934   48303   48306      -3      15       2
pair: 5   20901   20898      10       7     43540   43544      -8      -4    0.00020    0.01119   48296   48299      -3       3      -4
pair: 6   20904   20903     104     105     43536   43540      55      59    0.00240    0.13752   48302   48290      12      -1      -4
pair: 7   20901   20901      -7      -7     43545   43543      -3      -5   -0.00016   -0.00921   48299   48301      -2       0       2

Quad  1
pair: 0   20913   20914    -343    -342     43540   43550     165     175   -0.00787   -0.45066   48313   48303      10      -1     -10
pair: 1   20898   20901    -145    -142     43548   43551      62      65   -0.00330   -0.18880   48300   48309      -9      -3      -3
pair: 2   20895   20903    -151    -159     43535   43532     -74     -77   -0.00356   -0.20400   48289   48291      -2       8       3
pair: 3   20872   20909    -235    -272     43341   43354     -37     -24   -0.00585   -0.33507   48201   48036     165      37     -13
pair: 4   20940   20904    -455    -491     43527   43554     214     241   -0.01086   -0.62242   48309   48309       0      36     -27
pair: 5   20910   20903    -302    -309     43546   43546     145     145   -0.00702   -0.40196   48304   48307      -3       7       0
pair: 6   20901   20919    -421    -439     43529   43539    -213    -203   -0.00988   -0.56593   48296   48298      -2      18     -10
pair: 7   20907   20907    -452    -452     43548   43539    -201    -210   -0.01038   -0.59475   48315   48294      21       0       9

Quad  2
pair: 0   20914   20914     -25     -25     43536   43540      10      14   -0.00057   -0.03290   48300   48300       0       0      -4
pair: 1   20901   20897       7       3     43546   43536      -1     -11    0.00011    0.00658   48293   48300      -7       4      10
pair: 2   20899   20903    -256    -260     43533   43539    -127    -121   -0.00593   -0.33954   48293   48294      -1       4      -6
pair: 3   20912   20904    -210    -202     43540   43547    -106     -99   -0.00473   -0.27106   48300   48306      -6      -8      -7
pair: 4   20910   20903    -543    -550     43535   43536     261     262   -0.01255   -0.71923   48298   48299      -1       7      -1
pair: 5   20904   20905    -241    -240     43538   43544     111     117   -0.00552   -0.31647   48298   48301      -3      -1      -6
pair: 6   20903   20902      21      22     43539   43543       8      12    0.00049    0.02829   48298   48298       0      -1      -4
pair: 7   20902   20903      82      81     43546   43547      35      36    0.00187    0.10723   48300   48306      -6       1      -1

Quad  3
pair: 0   20902   20898     -82     -86     43536   43543      30      37   -0.00193   -0.11054   48289   48302     -13       4      -7
pair: 1   20900   20904      79      83     43548   43541     -35     -42    0.00186    0.10658   48301   48301       0      -4       7
pair: 2   20912   20894     181     199     43536   43535      97      96    0.00436    0.25005   48298   48289       9     -18       1
pair: 3   20912   20905     119     126     43539   43538      57      56    0.00281    0.16121   48296   48301      -5      -7       1
pair: 4   20894   20912    -454    -436     43534   43545     212     223   -0.01022   -0.58560   48303   48296       7     -18     -11
pair: 5   20906   20919    -336    -323     43527   43535     155     163   -0.00757   -0.43369   48295   48294       1     -13      -8
pair: 6   20902   20905    -203    -206     43537   43525     -89    -101   -0.00470   -0.26916   48293   48287       6       3      12
pair: 7   20900   20897    -140    -137     43539   43544     -68     -63   -0.00318   -0.18225   48298   48296       2      -3      -5
  • All measurements are consistent within measurement precision about 10um
  • Angles of 2x1 are in the range from -0.59 to +0.25 degree.

Configuration parameters

(tick) center_global/0-end.data (pixel)

    477.78    690.20    159.77    160.06    277.17     64.77    591.30    591.01
    990.78    989.30   1105.38    891.19   1421.65   1423.66   1502.28   1289.93
   1143.85    932.00   1461.86   1463.74   1349.75   1562.62   1032.39   1033.60
    633.06    632.80    518.88    731.75    200.62    198.75    118.50    331.23

   1018.54   1019.42   1134.27    921.94   1451.06   1451.01   1532.55   1319.23
   1173.24    960.71   1490.18   1491.45   1374.97   1587.78   1058.56   1061.14
    658.23    658.54    542.73    755.26    225.91    224.22    146.39    358.27
    507.44    720.59    189.73    190.28    306.25     93.65    620.68    619.85

      1.00      1.04      0.64      1.14      0.05     -0.03     -0.18      0.45
      0.92      1.37      0.26     -0.02      0.62      0.13      1.35      1.25
     -2.10     -1.76     -3.00     -2.29     -3.85     -4.20     -3.63     -2.94
      1.83      1.57      2.23      2.31      1.91      2.07      1.41      0.54

(tick) center/0-end.data (pixel)

 196.58   197.46   312.31    99.99   629.11   629.05   710.60   497.27  
 199.85   198.38   314.45   100.27   630.72   632.74   711.36   499.00  
 198.36   198.05   313.86   101.34   630.68   632.38   710.21   498.32  
 197.65   197.91   311.84    98.96   630.09   631.96   712.21   499.47  

 308.83    96.41   626.85   626.55   509.45   721.85   195.31   195.60  
 306.93    94.41   623.89   625.15   508.67   721.48   192.26   194.83  
 306.96    95.10   624.97   626.84   512.86   725.73   195.49   196.70  
 308.59    95.44   626.29   625.74   509.78   722.37   195.35   196.18  

   1.00     1.04     0.64     1.14     0.05    -0.03    -0.18     0.45  
   0.92     1.38     0.26    -0.01     0.62     0.13     1.35     1.25  
  -2.09    -1.76    -3.00    -2.29    -3.84    -4.20    -3.63    -2.94  
   1.83     1.58     2.23     2.32     1.92     2.07     1.42     0.54

(tick) tilt/0-end.data (degree)

 0.27766   0.37506   0.11976   0.17369  -0.04934   0.01119   0.13752  -0.00921   
-0.45066  -0.18880  -0.20400  -0.33507  -0.62242  -0.40196  -0.56593  -0.59475   
-0.03290   0.00658  -0.33954  -0.27106  -0.71923  -0.31647   0.02829   0.10723   
-0.11054   0.10658   0.25005   0.16121  -0.58560  -0.43369  -0.26916  -0.18225

(tick) offset/0-end.data

  0    0  820  820
  0  820  820    0
  0    0    0    0

(tick) offset_corr/0-end.data

 0  0 -3 -1
 0 -3 -3 -1
 0  0  0  0

(tick) marg_gap_shift/0-end.data

15  40   0  22
15  40   0  22
 0   0   0   0

Quad origin coordinates

This info could be translated in marg_gap_shift and other corrections...

Interchange of quads is not accounted...

center x, y  = 811.11 841.25
quad, x1, y1, dx, dy =  0    785.51   824.88   -25.61   -16.37
quad, x1, y1, dx, dy =  1    791.69   865.45   -19.42    24.19
quad, x1, y1, dx, dy =  2    835.79   859.52    24.67    18.26
quad, x1, y1, dx, dy =  3    831.48   815.17    20.36   -26.08

d1, d2 =    18.60    25.14

Test plot for CSPad using PyCSPadImage/src/Example 1

Images obtained using direct center_global and combination of alignment parameters for quads:

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