Dual Phase Considerations Conversation starter, not a complete set - - PowerPoint PPT Presentation

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Dual Phase Considerations Conversation starter, not a complete set - - PowerPoint PPT Presentation

Feb 07, 2024 212 likes •310 views

Dual Phase Considerations Conversation starter, not a complete set of slides. Keep DP in mind as we discuss topics A dedicated session on Dual Phase Friday morning 1 Dual Phase Technology Liquid and gas phase Ionization

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SLIDE 1

Dual Phase Considerations

  • Conversation starter, not a complete set of slides.
  • Keep DP in mind as we discuss topics
  • A dedicated session on Dual Phase Friday morning

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SLIDE 2

Dual Phase Technology

  • Liquid and gas phase
  • Ionization signals

amplified and detected in the gaseous phase above liquid level

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SLIDE 3

Dual Phase Technology

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SLIDE 4

Dual Phase Technology

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SLIDE 5

Dual Phase Technology

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SLIDE 6

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  • M. Mooney

Simulation

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SLIDE 7

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  • M. Mooney

Simulation

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SLIDE 8

DP Challenges

  • E-field distortions — biggest concern?
  • Ionization sources (e.g. Ar39)
  • Drift field deformations (misalignments, resistor failures etc.)
  • Argon flow pattern (steady state or turbulent) can significantly impact this, for

both SP and DP

  • Even more complicated for DP, positive ions may collect above the liquid and

create surface interface issues. Negative ions may also accumulate on surface.

  • The 12 m vertical drift can pose challenges
  • Electron lifetime?
  • Diffusion?
  • Recombination? — impacted by E-field

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SLIDE 9

Other Challenges/Considerations? What can be learnt from Prototypes?

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