CSpad alignment

• 2011-05-25 CSPad alignment parameters, see for detail CSPad alignment after run 3, cxi80410-r0628
  /reg/d/psdm/CXI/cxi80410/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/

• 2011-06-20 CSPad alignment parameters, see for detail CSPad alignment before run 4, cxi35711-r0009
  /reg/d/psdm/CXI/cxi35711/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/

• 2011-08-10 CSPad alignment parameters, see for detail CSPad alignment for xpp36211-r0544
  /reg/d/psdm/XPP/xpp36211/calib/CsPad::CalibV1/XppGon.0:Cspad.0/

• 2011-08-DD DSD CSPad alignment parameters, cxi37411, CxiDsd.0 - alignment is based on optical measurement only
  /reg/d/psdm/CXI/cxi37411/calib/CsPad::CalibV1/CxiDsd.0:Cspad.0/

• 2011-10-18 CxiDs1.0:Cspad.0 cxi37411 alignment - copy of cxi35711, test runs 39, 80.
  /reg/d/psdm/CXI/cxi37411/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/

• 2012-01-DD XppGon.0:Cspad.0 alignment - copy of the xpp36211 parameters.
  /reg/d/psdm/XPP/xpp47712/calib/CsPad::CalibV1/XppGon.0:Cspad.0/

• 2012-01-18 CSPad CxiDs1 alignment for cxi80410-r1150, cxi43312, cxi39912, etc.
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-cxi80410-r1150-Ds1/
  /reg/d/psdm/CXI/cxi80410/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/ Files added as 1142-end.data
  /reg/d/psdm/CXI/cxi43312/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/ 0-end.data

• 2012-01-19 CSPad CxiDsd alignment for cxi80410-r1150, cxi43312, cxi39912, etc.
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-cxi43312-Dsd/
  /reg/d/psdm/CXI/cxi80410/calib/CsPad::CalibV1/CxiDsd.0:Cspad.0/
  /reg/d/psdm/CXI/cxi43312/calib/CsPad::CalibV1/CxiDsd.0:Cspad.0/
  should be copied to cxi39912 (are the Ds1 and Dsd detectors swaped ?)

• 2012-02-17 CSPad CxiDs1 alignment for cxi39112-r0009, cxi39112
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-cxi39112-r0009-Ds1/
  /reg/d/psdm/CXI/cxi39112/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/

• 2012-02-26 CSPad XppGon alignment for xppcom10 etc.
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-xpp-2012-02-26/*/0-end.data
  Copied to: ~dubrovin/LCLS/CSPadAlignment-v01/calib-xppcom10-r1437-XppGon/*/1423-end.data
  /reg/d/psdm/XPP/xppcom10/calib/CsPad::CalibV1/XppGon.0:Cspad.0/*/1423-end.data

• 2012-03-08 CSPad CxiDs1 alignment for cxi49812-r0073 - copy of cxi37411, test runs 72(dark) 73(water ring) from 2011-12-03.
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-cxi49812-r0073-Ds1/
  /reg/d/psdm/CXI/cxi49812/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/

• 2012-03-14 CSPad CxiDs1 alignment for cxi49012-r0020
  Local: ~dubrovin/LCLS/CSPadAlignment-v01/calib-cxi49012-r0020-Ds1/ as 0-end.data
  /reg/d/psdm/CXI/cxi49012/calib/CsPad::CalibV1/CxiDs1.0:Cspad.0/ as 0-end.data

Alignment parameters

The official place for CSPad alignment parameters is
/reg/d/psdm/<INSTRUMENT>/<experiment>/calib/CsPad::Calib<VERSION>/<CSPad-name>/<type>/<run-range>.data
The file name consists of the run range followed by the .data, for example, 0-end.data, 11-end.data, 47-52.data, etc.

All alignment parameters are splitted for 9 types:

• center - x, y, z center position of each 2x1 for all quadrants. Comes from optical measurement.
• center_corr - additional manual correction to the center parameter. Can be applied if the optical measurement has (non-)obvious problems.
• marg_gap_shift - margins, gaps, and shifts between quads, as explained below.
• offset - x, y, z coordinates for 4 quads.
• offset_corr - additional correction to the offset.
• quad_rotation - 4 quad rotation in n*90 degree.
• quad_tilt - 4 quad tilt in fractional degree (has never been used).
• rotation - 8 2x1 rotation angle for 4 quads in n*90 degree.
• tilt- 8 2x1 tilt angle for 4 quads in fractional degree.

offset_corr

For individual quad position alignment use file: offset_corr/<run-range>.data

dXq0 dXq1 dXq2 dXq3
dYq0 dYq1 dYq2 dYq3
dZq0 dZq1 dZq2 dZq3

marg_gap_shift

For common gap and shift between quads correction use file marg_gap_shift/<run-range>.data

         offset of 2x1s in quad (for tilt)
        /  offset of quads in image (for tilt)
       /  /  gaps
      /  /  /  shifts
     /  /  /  /
X: 15 40  0 32
Y: 15 40  0 32
Z:  0  0  0  0

References

CSPad metrology and calibration files, links
CSPad detector
Psana CSPad Geometry - explains how the alignment parameters are used for reconstruction of the CSPad image in PSANA.
CSPad image producer in Python