Content

Optical measurement

2013-12-10-Quad-MEC-Metrology.xlsx- file from Gabriel Blaj
2013-12-10-Quad-MEC-Metrology.txt - text version of this file
2013-12-10-Quad-MEC-Metrology-corr.txt - text version of corrected metrology file.

New metrology file from 2013-12-20

2013-12-10-Quad-MEC-Metrology-improved-Z.xlsx - file from Gabriel Blaj with corrected z,
2013-12-10-Quad-MEC-Metrology-improved-Z.txt - text version, the same corrections are applied in x,y coordinates for point 4 and 18

Procedure

Use script procOpticalAlignment.py for quality check and to look at constants for center and tilt

Plots for non-corrected quad and difference between corrected and non-corrected metrology:

Quality check

Evaluated parameters

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
dz3(um) - signed distance from 2x1 sensor plane and corner 3, where the 2x1 sensor plane contains the corner points p1, p2, and p4. This plane is defined by the vectors v21=p2-p1, v41=p4-p1, and their orthogonal vector

vort = [v21 x v41].

Scalar product with normalization defines the distance from point 3 to the 2x1 plane containing 3 other points:

dz3 = (v31 * vort) / |vort|.

S1=S2, L1=L2 - the 2x1 sides should have equal length and width,
D1=D2 - the 2x1 diagonals should be equal,
dS1 = dS2 (approximately)= (388/185)*dL1 = (388/185)*dL2 - tilt angle should provide consistent deviation for all corners,
dD=0, d(dS)=0, and d(dL)=0 - within precision of measurement.
dz3(um) = 0

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

Quality check summary table

Non-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   20899   20903    -252    -248     43535   43533     117     115   -0.00574   -0.32903   48288   48295      -7      -4       2    -75.003
pair: 1   20909   20383     261    -265     43538   43555     113     130   -0.00004   -0.00256   48301   48083     218     526     -17    -16.318
pair: 2   20904   20905    -223    -224     43530   43537    -111    -104   -0.00513   -0.29416   48292   48293      -1       1      -7    -25.002
pair: 3   20901   20897    -240    -236     43525   43535    -120    -110   -0.00547   -0.31326   48287   48288      -1      -4     -10    267.024
pair: 4   20220   20893      60     733     43537   42832     685     -20    0.00925    0.52974   48298   47357     941    -673     705    -25.529
pair: 5   20907   20883     -78    -102     43534   43545      37      48   -0.00207   -0.11843   48293   48294      -1      24     -11   -223.895
pair: 6   20895   20903      20      12     43543   43537      15       9    0.00037    0.02105   48299   48292       7       8       6     52.031
pair: 7   20915   20913      -5      -3     43537   43530      -2      -9   -0.00009   -0.00526   48293   48299      -6      -2       7     11.996

pair 1 – has 526um difference between short sides (S). Correction: point 4 Y: 261 -> -261
pair 4 – has large difference in S, L, and D. Correction: point 18: Y+700: 66059 => 66759 X-700: 48012=>47312
pairs 3 and 5 – have >200um non-flatness

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   20899   20903    -252    -248     43535   43533     117     115   -0.00574   -0.32903   48288   48295      -7      -4       2    -75.003
pair: 1   20909   20905    -261    -265     43538   43555     113     130   -0.00604   -0.34604   48301   48310      -9       4     -17    -14.975
pair: 2   20904   20905    -223    -224     43530   43537    -111    -104   -0.00513   -0.29416   48292   48293      -1       1      -7    -25.002
pair: 3   20901   20897    -240    -236     43525   43535    -120    -110   -0.00547   -0.31326   48287   48288      -1      -4     -10    267.024
pair: 4   20920   20893      60      33     43537   43532     -15     -20    0.00107    0.06120   48298   48289       9      27       5    -29.069
pair: 5   20907   20883     -78    -102     43534   43545      37      48   -0.00207   -0.11843   48293   48294      -1      24     -11   -223.895
pair: 6   20895   20903      20      12     43543   43537      15       9    0.00037    0.02105   48299   48292       7       8       6     52.031
pair: 7   20915   20913      -5      -3     43537   43530      -2      -9   -0.00009   -0.00526   48293   48299      -6      -2       7     11.996

Corrected metrology looks much better...

2013-12-20 Corrected metrology file for Z:

the same corrections are applied in x,y coordinates for point 4 and 18

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   20899   20903    -252    -248     43535   43533     117     115   -0.00574   -0.32903   48288   48295      -7      -4       2     40.006
pair: 1   20909   20905    -261    -265     43538   43555     113     130   -0.00604   -0.34604   48301   48310      -9       4     -17      5.002
pair: 2   20904   20905    -223    -224     43530   43537    -111    -104   -0.00513   -0.29416   48292   48293      -1       1      -7    -58.011
pair: 3   20901   20897    -240    -236     43525   43535    -120    -110   -0.00547   -0.31326   48287   48288      -1      -4     -10     18.000
pair: 4   20920   20893      60      33     43537   43532     -15     -20    0.00107    0.06120   48298   48289       9      27       5    172.899
pair: 5   20907   20883     -78    -102     43534   43545      37      48   -0.00207   -0.11843   48293   48294      -1      24     -11     11.975
pair: 6   20895   20903      20      12     43543   43537      15       9    0.00037    0.02105   48299   48292       7       8       6     25.994
pair: 7   20915   20913      -5      -3     43537   43530      -2      -9   -0.00009   -0.00526   48293   48299      -6      -2       7      1.998

x,y coordinates for calibration files did not change
z coordinates are improved
New constants for center and tilt are available in
/reg/neh/home1/dubrovin/LCLS/CSPadAlignment-v01/calib-mec-2013-12-10-improved-Z/

`Geometry parameters`

center/0-end.data (pixel)

 199.82 198.60 311.21 98.37 628.52 629.03 715.23 503.00 199.82 198.60 311.21 98.37 628.52 629.03 715.23 503.00 199.82 198.60 311.21 98.37 628.52 629.03 715.23 503.00 199.82 198.60 311.21 98.37 628.52 629.03 715.23 503.00 306.55 93.91 623.94 625.19 512.39 724.62 197.79 197.97 306.55 93.91 623.94 625.19 512.39 724.62 197.79 197.97 306.55 93.91 623.94 625.19 512.39 724.62 197.79 197.97 306.55 93.91 623.94 625.19 512.39 724.62 197.79 197.97 -0.41 0.69 -0.64 -0.47 -1.61 -1.34 -1.52 -1.20 -0.41 0.69 -0.64 -0.47 -1.61 -1.34 -1.52 -1.20 -0.41 0.69 -0.64 -0.47 -1.61 -1.34 -1.52 -1.20 -0.41 0.69 -0.64 -0.47 -1.61 -1.34 -1.52 -1.20

or the same in um:

 21964 21829 34207 10812 69086 69143 78618 55289 21964 21829 34207 10812 69086 69143 78618 55289 21964 21829 34207 10812 69086 69143 78618 55289 21964 21829 34207 10812 69086 69143 78618 55289 33696 10323 68583 68721 56322 79650 21741 21760 33696 10323 68583 68721 56322 79650 21741 21760 33696 10323 68583 68721 56322 79650 21741 21760 33696 10323 68583 68721 56322 79650 21741 21760 -44 75 -70 -51 -177 -147 -167 -131 -44 75 -70 -51 -177 -147 -167 -131 -44 75 -70 -51 -177 -147 -167 -131 -44 75 -70 -51 -177 -147 -167 -131

tilt/0-end.data (degree)

-0.32903 -0.34604 -0.29416 -0.31326 0.06120 -0.11843 0.02105 -0.00526 -0.32903 -0.34604 -0.29416 -0.31326 0.06120 -0.11843 0.02105 -0.00526 -0.32903 -0.34604 -0.29416 -0.31326 0.06120 -0.11843 0.02105 -0.00526 -0.32903 -0.34604 -0.29416 -0.31326 0.06120 -0.11843 0.02105 -0.00526

offset/0-end.data (use default)

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

offset_corr/0-end.data (use default)

0 0 0 0 0 0 0 0 0 0 0 0

marg_gap_shift/0-end.data (use default)

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

`Test plots`

Image averaged over 10 events of exp=meca1113:run=376, using psana configuration file: psana-meca1113-r0376-cspad-rings-img.cfg

`Quad image and its spectrum w/o common mode subtraction:`

`Quad image and its spectrum with common mode subtracted:`

`Summary`

In conclusion, everything works, intensity correction works fine, alignment looks good to me...

2013-12-10 Qaud MEC Alignment

Content

Optical measurement

New metrology file from 2013-12-20

Procedure

Quality check

Evaluated parameters

Quality check summary table

Non-corrected metrology file:

Corrected metrology file:

2013-12-20 Corrected metrology file for Z:

Geometry parameters

Test plots

Quad image and its spectrum w/o common mode subtraction:

Quad image and its spectrum with common mode subtracted:

Summary

References

`Geometry parameters`

`Test plots`

`Quad image and its spectrum w/o common mode subtraction:`

`Quad image and its spectrum with common mode subtracted:`

`Summary`

`References`