Content

Notes

Below are tables that can be updated with time-ordered publicly-released geometry files (most recent at top of table).

All geometry formats used by LCLS (crystfel-hdf5, crystfel-cxidb, cctbx, psana) can be placed here.  TJ Lane has geometry-conversion scripts (currently psana/cheetah/crystfel, but cctbx will be added).  They can be obtained from github here:  https://github.com/LinacCoherentLightSource/psgeom.

Optical measurements can be found HERE. Corrected optical metrology in text format can be found under the page CSPAD Alignment.

Geometries

Camera History

Camera1_V16_20140924

• Optical Metrology file: 
  • 2014-09-24-CXI-Camera1-Metrology.xlsx
  • <https://confluence.slac.stanford.edu/download/attachments/107749188/2014-09-24-CXI-DS1-Metrology.xlsx?version=1&modificationDate=1414457576000&api=v2>
• 2014-09-24 -- fixed and moved to DS2 chamber
  
  • mixed quadrants: 
    • 3 old A boards (Q0, Q1, Q2), 4/40
    • 1 new board (Q3), 3/19
• 2014-11-19 -- DS1 @ DSD
  
  • moved back to DS1 chamber in DSD location
  • Used for PCS, IH and cxig3616
• 2015-01-10 --  DS1 @ DSC location
  • Used for cxig1515
    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = DscCsPad
    • Relative detector Z position:  
      
      • alias = 'DscCsPad_z' 
      • pv = 'CXI:DS1:MMS:06.RBV'
• 2015-03-17 -- DS2 @ DSD location 
  
  • Camera 1 was moved to DS2 chamber at DSD location.
     
  • The previously broken D50 Concentrator was replaced with older concentrator.
    • Quadrants 2 and 0 were swapped.
  • Back detector (generally not used) for SC1 experiments from 2015-03-18 to 2015-05-04
    
    • src = 'DetInfo(CxiDs2.0:Cspad.0)'
    • alias = DsdCsPad
    • Relative detector Z position:  
      
      • alias = 'DsdCsPad_z' 
      • pv = 'CXI:DS2:MMS:06.RBV'
• 2015-05-04 -- DS2 @ DSD 
  
  • Cables for Camera 1 in DS2 corrected and collimator pipe removed from front DS1
  • Back detector for SC1 experiments from 2015-05-04 to 2015-05-17
    
    • src = 'DetInfo(CxiDs2.0:Cspad.0)'
    • alias = DsdCsPad
    • Relative detector Z position:  
      
      • alias = 'DsdCsPad_z' 
      • pv = 'CXI:DS2:MMS:06.RBV'

Camera2_V16_20150120

• 2015-02-02 -- DS2 chamber with refurbished Camera2 moved to DSA location
  • Non-standard configuration given D50 CsPad rack concentrator, which is normally used with DS2 chamber, was broken.
  • Used D51 CsPad rack for concentrator and motors Februatry 2015 experiments in the SC2 (a.k.a. SC01, 100nm focus chamber). 
    • cxig0715, cxie7015, cxie7515 and cxif5315
    • src = 'DetInfo(CxiDs2.0:Cspad.0)'
    • alias = DsaCsPad
    • Relative detector Z position:  
      
      • alias = 'DsaCsPad_z' 
      • pv = 'CXI:DS1:MMS:06.RBV'
    • Similarly, other relevant epicsStore aliases begin with DsaCsPad.
      
  • The mapping of the D50 concentrator is rotated by 90 relative to the D51 concentrator.
• 2015-03-03 -- Moved DS2 chamber with Camera2 to DSD location
  • Used for SPI experiment cxi86415
    • src = 'DetInfo(CxiDs2.0:Cspad.0)'
    • alias = DsdCsPad
    • Relative detector Z position:  
      
      • alias = 'DsdCsPad_z' 
      • pv = 'CXI:DS2:MMS:06.RBV'
  • Note pipe in front DS1 chamber detector during this experiment was removed, but the holder for it was still in providing circular aperture for back DS2 detector
• 2015-03-17 -- Added shield and pipe and moved Camera2 to DS1 chamber
  

  • Used for SC1 experiments starting at the end of Run10:

    • cxig0915, cxii6315, cxih0115, cxih0815, April PCS, cxih9515, cxii2415, ...
    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = DscCsPad
    • Relative detector Z position:  
      
      • alias = 'DscCsPad_z' 
      • pv = 'CXI:DS1:MMS:06.RBV'
  • Detector Attenuation from shields and coatings (pipe and additional shielding required for laser experiments):
    • CsPad Pipe Al Shield Transmission:

      • 8 um thick polyimide 

      • 1 um thick Al on upstream side

      • 1.75 um thick Al on downstream side

    • The detectors have 0.25 um thick Al coating.

    • --> 3 um total Al

• 2015-05-04 -- Removed shield and pipe from Camera2 in DS1 chamber
  

  • Used for SC1 experiments starting with cxih8015:

    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = DscCsPad
    • Relative detector Z position:  
      
      • alias = 'DscCsPad_z' 
      • pv = 'CXI:DS1:MMS:06.RBV'

Camera2_V16_20140827

• 2014-08-27 -- Refurbished Camera2 installed in DS1 chamber
  • Metrology:
    • 2014-08-27-CXI-DS2-Metrology.xlsx
  • Quad 1 (zero based counting) reworked; metrology updated, the other 3 quads (Q0, Q2, Q3) are unchanged (as in the previous metrology: May 14, 2014).
  • Used for Run 10 experiments from 2014-10-16 until it was damaged in November 2014 (cxig2614, cxif7214, cxie7914, Nov PCS)
    
    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = Ds1CsPad
    • Relative detector Z position:  
      • no alias defined
      • pv = 'CXI:DS1:MMS:06.RBV'

Camera1_V16_20140319

• 2014-03-19 -- Camera1 rebuilt
  • Metrology:
    • 2014-03-19-CSPAD-CXI-DS1-Metrology.xlsx
    • Quad 1 (zero based counting) reworked; metrology updated, the other 3 quads (Q0, Q2, Q3) are unchanged (as in the previous metrology: May 14, 2014).
  • Used as:
    • Front detector at DSC for SC1 experiment IH Milathianaki cxii0114 (damaged asic with laser) and cxid8114
    • Moved to DSA location for SC2 chamber experiments for cxic9714 and cxid5514
    • cxid2714 (moved to back detector after Z motor issues during cxid2714)
  • Info:
    
    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = Ds1CsPad
    • Relative detector Z position:  
      • no alias defined
      • pv = 'CXI:DS1:MMS:06.RBV'

Camera1_V16_20131220

• 2013-12-20 -- Camera1 upgraded to V16
  • Metrology:
    • 2013-12-20-CSPAD-CXI-DS1-Metrology.xlsx
  • Front detector for SC1 experiments starting in January 2014 including January PCS, cxia2514, cxii0214, cxib3214, cxib6714.
    
    • src = 'DetInfo(CxiDs1.0:Cspad.0)'
    • alias = Ds1CsPad
    • Relative detector Z position:  
      • no alias defined
      • pv = 'CXI:DS1:MMS:06.RBV

Camera2_V16_20131212

• 2013-12-12 -- Camera2 upgraded to V16
  • Metrology:
    • 2013-12-12-CSPAD-CXI-DSD-Metrology.xlsx
  • Used for experiments???.
    
    • src = 'DetInfo(CxiDsd.0:Cspad.0)'
    • Relative detector Z position:  
      • pv = 'CXI:DS2:MMS:06.RBV'
• 2014-06-02 -- Ds2 chamber moved to DSC location
  • Changed name from CxiDsd (36) to CxiDs2 (33) in both the cxi.cnf file and the configdb CsPad02 definition.
  • Used as front detector for cxid6214, cxid9114, cxic4414, cxid5714, cxid6014, July 2014 PCS, cxic8214
    • src = 'DetInfo(CxiDs2.0:Cspad.0)'
    • Relative detector Z position:  
      • pv = 'CXI:DS2:MMS:06.RBV'
  • Detector upside down?

Camera3_V16_20131009

• Metrology file:
  • 2013-10-09-CSPAD-XPP-Metrology.xlsx
• Out of vacuum camera typically used in XPP and XCS.
• 2014-12-17 -- Used in CXI at DG4 location in December 2014.
  • XCS concentrator
  • D50 MPOD power
  • Detector quads rotated 90 deg
  • src = 'DetInfo(CxiDg4.0:Cspad.0)'
  • Relative detector Z position:  
    
    • alias = 'Dg4CsPad_z' 
    • pv = 'CXI:DG4:MMS:16.RBV '

References

Documentation on data formats

• cxidb - web documentation
• crystfel - page of T. A. White at DESY
• cctbx - sourceforge
• psana - confluence

Relevant documents, publications

• cheetah - github, Anton Barty
• dxtbx-the diffraction experiment toolbox, Aaron Brewster
• XFEL Detectors and ImageCIF
• Diffraction Geometry, D.J.Thomas
• Calibration Management Tool (calibman)
• CSPAD Alignment - alignment summary
• psgeom - T.J. Lane converter between geometry formats in github