Mechanical design of the Disc DIRC - current status & volume - - PowerPoint PPT Presentation

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Mechanical design of the Disc DIRC - current status & volume - - PowerPoint PPT Presentation

Nov 01, 2023 27 likes •319 views

Mechanical design of the Disc DIRC - current status & volume clashes Klaus Fhl Erik Etzelmller Thomas Wasem AG Dren - Gieen University PANDA-MEC-meeting 9-December-2013 at GSI most recent status Disc DIRC front view Muon

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Mechanical design of the Disc DIRC

  • current status & volume clashes

Klaus Föhl Erik Etzelmüller Thomas Wasem AG Düren - Gießen University PANDA-MEC-meeting 9-December-2013 at GSI

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SLIDE 2

most recent status

Disc DIRC front view

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Muon Detectors (Barrel)

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summarising

  • GEM
  • overlap with cable paths – should be easy to remedy
  • EMC
  • overlapping tubes – should be easy to remedy
  • laser pulser volumes clashing with supply lines
  • opening in frame at 45 degrees not much usable?
  • feedthroughs possible at 30 and 60 degrees?
  • lowering Al frame by 15mm → routing tubes around
  • Muon Detectors
  • can some Barrel panels be made shorter?
  • no cable routes indicated in the available drawings...
  • SciTil
  • drawings? (concept?)
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Thank You

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backup slides

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most recent status – FLG element

fused silica radiator LiF extension bars fused silica Focussing Light Guide MCP-PMT sensor colour filter

(pigment or dielectric)

performance curve for cylindric curvature cylindrical

  • r

spherical curvature mirror coating needed

  • LiF doubling as

extension and dispersion- correcting piece

  • cylindrical or

spherical surface possible

  • colour filter to

adjust photon rate to MCP allowable light photon dose

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FLGs – typical sigma resolutions

sigma = 0.015 – 0.03 mm sigma = 0.18 – 0.24 mm with added 2nd curvature sigma = 0.07 – 0.13 mm sigma = 0.2 – 0.7 mm with added 2nd curvature sigma = 0.2mm

+ 1 2 d e g

  • 2

d e g

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most recent status - positioning

radiator Lif finger bars FLGs synthetic amorphous fused silica radiator disc LiF bar MCP-PMT Endcap EMC

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