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Alignment procedure

Alignment procedure for CSPAD2x2 is very similar to CSPAD alignment for quads described in
 CSPAD Geometry and Alignment.
The only difference is that CSPAD2x2 has only two 2x1 sensors, that makes everything much simpler.

Optical measurements

Photos and charts with numeration of corners in otical measurements:

Metrology table

Metrology table in xlsx format:
Metrology-140ks-Feb13-2013.xlsx

The xlsx file is converted to tables in text format for 6 CSPad2x2 detectors:

 

Calibration types

In 2014 new universal detector geometry software is implemented and documented in the Detector Geometry page. In this approach detector geometry calibration information is located in a single file of type

  • geometry - contains hierarchical description of all detector components; for example for CSPAD2x2 it has sensors' location and rotation in the detector, detector - in the setup, etc.

Currently all psana modules which deal with image and pixel coordinates can work with calibration type geometry.

In earlier version of software, CSPAD2x2 geometry is defined by the two calibration types:

  • center - x, y, z center position for each two 2x1 in the detector. Obtained from optical measurement.
  • tilt- two 2x1-tilt angle for the detector in fractional degree. Obtained from optical measurement.

 

Quality check and alignment parameters

CSPad2x2-1.txt Q133 D7A16

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20909   20902       2      -5     43538   43539       0       1   -0.00006   -0.00329   48297   48297       0       7      -1
pair: 1   20906   20902       2      -2     43538   43538       0       0    0.00000    0.00000   48296   48296       0       4       0

center/0-end.data (in pixels)

 198.05  198.42 
  95.10  307.54 
   0.09    0.03

tilt/0-end.data (in degree)

-0.00329  0.00000

CSPad2x2-2.txt Q110 D#A14

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20905   20896       5      -4     43536   43536      -2      -2    0.00001    0.00066   48291   48294      -3       9       0
pair: 1   20905   20905     -22     -22     43540   43536      10       6   -0.00051   -0.02895   48294   48299      -5       0       4

center/0-end.data (in pixels)

 198.03  198.94 
  95.09  306.84 
   0.18    0.21

tilt/0-end.data (in degree)

 0.00066 -0.02895

CSPad2x2-3.txt Q111 D12A18

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20907   20908      -5      -4     43540   43545       0       5   -0.00005   -0.00263   48302   48301       1      -1      -5
pair: 1   20904   20907     421     424     43538   43538    -203    -203    0.00970    0.55601   48299   48299       0      -3       0

center/0-end.data (in pixels)

 198.06  196.67 
  95.08  308.15 
   0.17    0.23

tilt/0-end.data (in degree)

-0.00263  0.55601

CSPad2x2-4.txt Q135 D19A19

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20906   20905      -8      -9     43540   43540       3       3   -0.00020   -0.01119   48297   48299      -2       1       0
pair: 1   20908   20898     -12     -22     43541   43538      12       9   -0.00039   -0.02237   48299   48295       4      10       3

center/0-end.data (in pixels)

 198.07  198.70 
  95.06  307.79 
   0.24    0.30

tilt/0-end.data (in degree)

-0.01119 -0.02237

CSPad2x2-5.txt Q022 D15A15

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20904   20904       2       2     43536   43536      -1      -1    0.00005    0.00263   48294   48294       0       0       0
pair: 1   20908   20909     122     123     43540   43545     -61     -56    0.00281    0.16119   48302   48302       0      -1      -5

center/0-end.data (in pixels)

 198.03  197.12 
  95.10  307.60 
   0.03   -0.11

tilt/0-end.data (in degree)

 0.00263  0.16119

CSPad2x2-6.txt Q157

pair:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    <dS/L>  angle(deg)      D1      D2      dD   d(dS)   d(dL)
pair: 0   20903   20900      59      56     43541   43539     -27     -29    0.00132    0.07567   48296   48297      -1       3       2
pair: 1   20979   20977      49      47     43707   43705     -20     -22    0.00110    0.06292   48481   48477       4       2       2

center/0-end.data (in pixels)

 197.93  196.92 
  95.34  307.53 
  -1.60   -3.63

tilt/0-end.data (in degree)

 0.07567  0.06292

2014-04-25-CSPAD2X2-3-MEC-Metrology.txt  (1.0 SN07 D12A18)

Original metrology file from Gabriel Blaj: 2014-04-25-CSPAD2X2-3-MEC-Metrology.xlsx

This should be used for any experiment AFTER April 25th 2014 (until further notice).

Quality check

Quality check in XY plane:
segm:        S1      S2     dS1     dS2        L1      L2     dL1     dL2    angle(deg)   D1      D2      dD   d(dS)   d(dL)
segm: 0   20979   20982       0       3    -43695  -43689      -2       4   -0.00197   48468   48468       0      -3      -6
segm: 1   20981   20981     123     123    -43701  -43695      51      57   -0.16127   48478   48469       9       0      -6

Quality check in Z:
segm:        SA      LA   XSize   YSize    dZS1  dZS2  dZL1  dZL2    dZSA  dZLA  ddZS  ddZL     dZX   dZY   angXZ(deg) angYZ(deg) dz3(um)
segm: 0   20980  -43692   43692   20980      18     5    -2   -15      11    -8    13    13      -8    11  -0.01049    0.03004    -13.001
segm: 1   20981  -43698   43698   20981      -4    -8     0    -4      -6    -2     4     4      -2    -6  -0.00262   -0.01639     -4.000

center/0-end.data (in pixels)

 198.76  199.63 
  95.44  308.48 
   0.06    0.04

tilt/0-end.data (in degree)

-0.00197 -0.16127

geometry/0-end.data

# TITLE      Geometry parameters of CSPAD2X2
# DATE_TIME  2014-10-03 12:27:11 PDT
# METROLOGY  /reg/neh/home1/dubrovin/LCLS/CSPad2x2Metrology/CSPad2x2/2014-04-25-CSPAD2X2-3-MEC-Metrology.txt
# AUTHOR     dubrovin
# EXPERIMENT Any
# DETECTOR   CSPAD2X2
# CALIB_TYPE geometry
# COMMENT:01 Table contains the list of geometry parameters for alignment of 2x1 sensors, quads, CSPAD, etc
# COMMENT:02 All translation and rotation pars of the object are defined w.r.t. parent object Cartesian frame
# PARAM:01 PARENT     - name and version of the parent object
# PARAM:02 PARENT_IND - index of the parent object
# PARAM:03 OBJECT     - name and version of the object
# PARAM:04 OBJECT_IND - index of the new object
# PARAM:05 X0         - x-coordinate [um] of the object origin in the parent frame
# PARAM:06 Y0         - y-coordinate [um] of the object origin in the parent frame
# PARAM:07 Z0         - z-coordinate [um] of the object origin in the parent frame
# PARAM:08 ROT_Z      - object design rotation angle [deg] around Z axis of the parent frame
# PARAM:09 ROT_Y      - object design rotation angle [deg] around Y axis of the parent frame
# PARAM:10 ROT_X      - object design rotation angle [deg] around X axis of the parent frame
# PARAM:11 TILT_Z     - object tilt angle [deg] around Z axis of the parent frame
# PARAM:12 TILT_Y     - object tilt angle [deg] around Y axis of the parent frame
# PARAM:13 TILT_X     - object tilt angle [deg] around X axis of the parent frame

# HDR PARENT IND        OBJECT IND    X0[um]  Y0[um]  Z0[um]   ROT-Z ROT-Y ROT-X     TILT-Z   TILT-Y   TILT-X

CSPAD2X1:V1    0  SENS2X1:V1     0     21848   10490       6     180     0     0   -0.00197 -0.01049  0.03004 
CSPAD2X1:V1    0  SENS2X1:V1     1     21943   33908       4     180     0     0   -0.16127 -0.00262 -0.01639

 

Calibration files

In local space

Produced for optical measurement on 2013-02-13

  • /reg/neh/home1/dubrovin/LCLS/CSPad2x2Alignment/calib-cspad2x2-01-2013-02-13/<type>/0-end.data
  • ...
  • /reg/neh/home1/dubrovin/LCLS/CSPad2x2Alignment/calib-cspad2x2-06-2013-02-13/<type>/0-end.data
  • /reg/neh/home1/dubrovin/LCLS/CSPad2x2Alignment/calib-cspad2x2-03-2014-04-25/<type>/0-end.data - 2014-05-30

Deployed in experimental DB

(tick) 2013-03-08
/reg/d/psdm/mec/mec73313/calib/CsPad2x2::CalibV1/

  • MecTargetChamber.0:Cspad2x2.1/<type>/0-end.data
  • ...
  • MecTargetChamber.0:Cspad2x2.5/<type>/0-end.data

(tick) 2013-06-21
/reg/d/psdm/xpp/xpptut13/calib/CsPad2x2::CalibV1/

  • XppGon.0:Cspad2x2.0/<type>/0-end.data is taken from calib-cspad2x2-06-2013-02-13/<type>
  • XppGon.0:Cspad2x2.1/<type>/0-end.data is taken from calib-cspad2x2-01-2013-02-13/<type>
    where <type> stands for tilt and center.

Known detectors

on 2014-07-04:

   0 : CxiDg2.0:Cspad2x2.0
   1 : CxiDg2.0:Cspad2x2.1
   2 : CxiSc1.0:Cspad2x2.0
   3 : CxiSc2.0:Cspad2x2.0
   4 : CxiSc2.0:Cspad2x2.1
   5 : CxiSc2.0:Cspad2x2.2
   6 : CxiSc2.0:Cspad2x2.3
   7 : CxiSc2.0:Cspad2x2.4
   8 : CxiSc2.0:Cspad2x2.5
   9 : CxiSc2.0:Cspad2x2.6
  10 : CxiSc2.0:Cspad2x2.7
  11 : MecEndstation.0:Cspad2x2.6
  12 : MecTargetChamber.0:Cspad2x2.0
  13 : MecTargetChamber.0:Cspad2x2.1
  14 : MecTargetChamber.0:Cspad2x2.2
  15 : MecTargetChamber.0:Cspad2x2.3
  16 : MecTargetChamber.0:Cspad2x2.4
  17 : MecTargetChamber.0:Cspad2x2.5
  18 : SxrBeamline.0:Cspad2x2.2
  19 : SxrBeamline.0:Cspad2x2.3
  20 : XcsEndstation.0:Cspad2x2.0
  21 : XcsEndstation.0:Cspad2x2.1
  22 : XppGon.0:Cspad2x2.0
  23 : XppGon.0:Cspad2x2.1
  24 : XppGon.0:Cspad2x2.2
  25 : XppGon.0:Cspad2x2.3

 

Software

Memory data model

In contrast to CSPAD which data array shape is (N, 185, 388), the CSPAD2x2 data array has a shape (185, 388, 2); the memory pointer increment by 1 swaps the 2x1 sensor. The (raw,column)=(0,0) is located in corners 4 and 8 of optical measurement scheme for two 2x1 sensors, respectively.

Geometry access

In 2014 new universal detector geometry software is implemented and documented in the Detector Geometry page. In this approach detector geometry calibration information is collected in a single file of type

  • geometry

which contains hierarchical description of all detector components. For example for CSPAD it has sensors' location and rotation in the quads, quads - in the detector, detector - in the setup, etc.

By default these files reside under the calib directory with full path like

  • /reg/d/psdm/<instrument>/<experiment>/calib/<calib-soft-version>/<data-source>/geometry/<run-range>.data

Whenever necessary image can be generated by the psana Module CSPadPixCoords::CSPad2x2ImageProducer, which access geometry calibration data automatically, generates 2-d image and saves it in the event store for further processing.

Python modules for CSPAD2x2 geometry

Detector geometry software, described in  Detector Geometry, has a Python interface which is recommended to use in new code development.

Alternatively, Python modules for CSPAD2x2 geometry are available in the package PyCSPadImage documented in CSPAD pixel coordinates and image producer in Python. They provides an interface for getting
(tick) Calibration parameters from DB and local directory,
(tick) Pixel coordinates,
(tick) Image producer

References


Deprecated

C++ classes and modules for psana

(tick) data types are implemented in the package pdscalibdata as CsPad2x2* modules:

  • CsPad2x2CenterV1
  • CsPad2x2TiltV1
  • CsPad2x2PedestalsV1
  • CsPad2x2PixelGainV1
  • CsPad2x2PixelStatusV1

(tick) Access methods are implemented in the package PSCalib in CSPad2x2CalibPars module.
Example of acess is in PSCalib/test/ex_cspad2x2_calib_pars.cpp.

(tick) Automated access to the cspad2x2 geometry parameters is implemented in packages:

  • Package CSPadPixCoords generates and returns the CSPad2x2 pixel coordinates, taking into account geometry alignment parameters, if available in the expected place under /reg/d/psdm/<instrument>/<experiment>/calib directory.
  • Module CSPadPixCoords::CSPad2x2ImageProducer produces CSPad2x2 image, accounting for correct geometry, if available.


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