Page History
...
- X-Y precision of measurements is about 60um
- Tilt angles are in range from -0.33 to 0.27 degree
- Z deviations from flatness are in the range from -63 to 152um
Geometry parameters
center/0-end.data (pixel)
...
No Format |
---|
197.94 198.05 304.45 97.98 623.08 623.74 706.30 498.64
198.22 198.17 304.58 97.25 622.90 623.09 708.37 495.18
197.22 198.51 300.71 96.77 621.46 620.95 709.39 496.88
198.80 198.29 304.26 101.44 625.93 625.40 705.81 497.16
301.22 95.14 621.13 621.36 516.12 724.42 197.91 196.12
303.12 94.88 619.87 620.29 515.50 722.83 197.13 196.76
301.51 94.34 622.96 623.24 519.67 725.08 198.86 198.69
300.50 94.63 621.71 622.07 515.69 722.61 196.56 195.96
0.47 0.17 -0.25 0.17 0.65 -0.19 -0.14 -0.50
0.36 -0.16 -0.07 0.03 0.38 -0.13 -0.04 -0.18
0.01 -0.37 0.95 -0.22 0.08 -0.75 0.21 0.05
-0.05 -0.08 0.25 0.19 0.03 -0.21 0.21 0.12 |
or the same in um:
Code Block |
---|
21757 21769 33464 10769 68489 68561 77637 54810
21788 21783 33479 10689 68469 68489 77863 54430
21678 21820 33054 10637 68310 68254 77976 54617
21851 21796 33444 11150 68801 68743 77582 54648
33110 10457 68275 68299 56732 79628 21754 21558
33319 10429 68135 68182 56664 79453 21668 21628
33141 10369 68476 68506 57121 79700 21858 21839
33030 10402 68338 68378 56684 79429 21605 21540
51 18 -28 18 71 -20 -15 -54
39 -18 -7 3 41 -14 -4 -20
1 -40 104 -24 9 -82 23 6
-5 -8 27 20 2 -23 23 13 |
...
tilt/0-end.data (degree)
codeNo Format |
---|
0.04474 0.01053 -0.01645 -0.02828 -0.05128 -0.03552 -0.33658 -0.06315
0.03750 -0.06382 -0.06119 -0.00197 -0.07697 0.01381 0.15327 0.05528
-0.03948 -0.23876 -0.10659 -0.06711 0.16514 0.11842 0.09802 0.19144
-0.10922 -0.13684 0.13617 -0.17232 -0.07560 -0.00263 0.27292 0.24731 |
...
offset/0-end.data
No Format |
---|
0 |
...
0
820
820
0
0
0
0
0
0 820 820
0 820 820 0
0 0 0 0 |
2014-03-05 Alignment of Quads
Data for alignment
In order to get cspad geometry parameters for experiment cxib6714 Jason Koglin suggested to use cxi83714 runs 17,18, 127, 128, 130-132, 135, 136.
CSPAD array with subtracted pedestal and threshold 4*rms(per pixel) is averaged over 5000 events of run 136.
Parameters from latest optical measurement
center and tilt are used from /reg/neh/home1/dubrovin/LCLS/CSPadAlignment-v01/calib-cxi-ds1-2013-12-20
Tuned calibration parameters
offset_corr/0-end.data :
Code Block |
---|
0 0 4 4
0 4 1 1
0 0 0 0 |
marg_gap_shift/0-end.data :
Code Block |
---|
15 40 4 40
15 40 4 40
0 0 0 0 |
Results
2014-03-26 quads alignment with semi-automatic algorithm for ring center finding
R-phi presentation if the image using previous alignment
shows that manual quads alignment is done with precision about ±1 pixel but can be improved.
Slightly better results for quads alignment were obtained with semi-automatic ring center finder by changing parameters
offset_corr/136-136.data :
Code Block |
---|
1 1 4 4
0 5 2 2
0 0 0 0 |
offset_corr/0-end.data
0 0 0 0 0 0 0 0 0 0 0 0 |
marg_gap_shift/0-end.data
15
40
2
25
15
40
2
25
...