hft pixel progress
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HFT PIXEL Progress. Face to Face 13 May-2009 Wieman. Sector structures. ladder fabrication and tooling. ladder fabrication and tooling. ladder fabrication and tooling. finalizing mechanical designs and developing rapid production methods. ladder fabrication and tooling. ladder with - PowerPoint PPT PresentationTRANSCRIPT
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HFT PIXEL Progress
Face to Face
13 May-2009
Wieman
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Sector structures
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ladder fabrication and tooling
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ladder fabrication and tooling
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ladder fabrication and tooling
5finalizing mechanical designs and developing rapid production methods
![Page 6: HFT PIXEL Progress](https://reader036.vdocument.in/reader036/viewer/2022062315/568151b5550346895dbfe070/html5/thumbnails/6.jpg)
ladder fabrication and tooling
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ladder withsilicon heaterchips(50 m thick)
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wire bonding 50 m silicon to flex PC
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vacuum chuck tosecure flex and siliconflat against solid surfaceto remove bounce
Any bounce then no bond
Good Newsafter a couple of minor modifications to the vacuum chuck thewire bonding machine is happyRhonda is happy
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ladder to sector tooling fixtures (4 stations)
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Air cooling of silicon detectors – Computational Fluid Dynamics (CFD) analysis
air flow path – flows along both inside and outside surface of the sector
• Silicon power: 100 mW/cm2 (~ power of sunlight)
• 240 W total Si + drivers
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Air cooling – CFD analysis• air flow velocity 9-10 m/s• maximum temperature rise above
ambient: 12 deg C• sector beam surface – important
component to cooling• dynamic pressure force 1.7 times
gravity
stream lines with velocity
silicon surface temperature
velocity contours
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Full sized cooling tests
Thermal camera window not shown
> 300 CFPM air flow for verification of cooling capability
Cooling tests will begin as soon as prototype sectors completed
9 inch diameter tube mocks upISC
11dust collector for air supply