canSAS-XI/TOFSANS

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(Session Notes)
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=== Session Notes ===
 
=== Session Notes ===
  
 +
Houston presentation
 +
--------------------
 +
* 4 layers of Cu tubes, each containing 7 10-B straws
 +
* Simulated in McStas+GEANT4 > Mantid
  
 +
* Issues:
 +
** Can’t survey in pixels
 +
** Parallax because of depth
 +
** Differential efficiencies/self-screening
 +
** Sheer number of pixels (10M)
  
 +
Andrew Jackson: But can readout each individual straw!
 +
 +
Brian Pauw: Will probably need angle-dependent pixel efficiency maps? Could also use Bragg peaks at known positions on different detectors to back-calculate wavelength if d-spacing known?
 +
 +
Adrian Rennie: And what about relative efficiencies? There will be a huge amount of information in detector calibration file!
 +
 +
 +
Jansk presentation
 +
------------------
 +
* Angular resolution
 +
* Wavelength resolution
 +
 +
* Issues:
 +
** Measurement of distance
 +
** Measurement of openings
 +
** Measurement of angles
 +
** Measurement of relative time (cables lengths)
 +
** Measurement of absolute time (moderator emission time)
 +
** Measurement of Qmin
 +
** Measurement of intensities
 +
 +
*Standards
 +
** Reproducibility
 +
** Durability
 +
** Reliability
  
 
=== Actions ===
 
=== Actions ===
  
 
- Formation of a TOF-SANS working group : AJJ
 
- Formation of a TOF-SANS working group : AJJ

Revision as of 16:41, 9 July 2019

Chair : Andrew Jackson

Presentations

Session Plenary overview : TOF-SANS Blessing or Curse?

Judith Houston : LoKI Detectors

Sebastian Jaksch :

Anna Sokolova : Experiences from Bilby

Session Notes

Houston presentation


  • 4 layers of Cu tubes, each containing 7 10-B straws
  • Simulated in McStas+GEANT4 > Mantid
  • Issues:
    • Can’t survey in pixels
    • Parallax because of depth
    • Differential efficiencies/self-screening
    • Sheer number of pixels (10M)

Andrew Jackson: But can readout each individual straw!

Brian Pauw: Will probably need angle-dependent pixel efficiency maps? Could also use Bragg peaks at known positions on different detectors to back-calculate wavelength if d-spacing known?

Adrian Rennie: And what about relative efficiencies? There will be a huge amount of information in detector calibration file!


Jansk presentation


  • Angular resolution
  • Wavelength resolution
  • Issues:
    • Measurement of distance
    • Measurement of openings
    • Measurement of angles
    • Measurement of relative time (cables lengths)
    • Measurement of absolute time (moderator emission time)
    • Measurement of Qmin
    • Measurement of intensities
  • Standards
    • Reproducibility
    • Durability
    • Reliability

Actions

- Formation of a TOF-SANS working group : AJJ

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