tray factory considerations jean-francois genat uc lapd collaboration meeting, june 10-11 th 2010,...
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Tray Factory Considerations
Jean-Francois GenatUC
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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Outline
- Tile and Tray- On-Tray electronics- Tray assembly- Plans
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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Tiles and Tray
6-Tiles Trays
From Rich Northrop
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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Tile structure
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
Inside out: grounded anode strips on top of glass
HV divider uses spacers as passive components.Single HV connection on top
From Rich Northrop (vertical dimensions not final)
From Joe Gregar
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Tray structure
2-Tile tray
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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Tray overall layout
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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On Tray Electronics- Analog board
- Front-end Chips- Jitter cleaner(s)- LV decouplings caps- Interface connector to digital board
- Digital board- FPGA- Optical interfaces to DAQ - LV decouplings caps- Interface connector to analog board
- High Voltages- One single HV access to tile on top- One SHV single access/tray- Teflon insulated HV wires running on-tray- Single RC decoupling for each tile
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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8LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
See Eric Oberla and Herve Grabas talks
Electronics layout
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Tray assembly
Tile to PCB: Double sticky tapePCB to Honeycomb: Double sticky tapeAnode plane to anode plane: Copper foil soldered
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
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10LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
Ballpark for costs
Estimation for 15 x 6-tile trays (MCP not included) of 16 “ x 24 “(equivalent to a 22” diameter PMT)
Sampling ASIC: 10 $/ch
64-channel/row (16 chips) ASICs 1,300 $
Glass = 3,000 $ (Rich Northrop)
Honeycomb+ PCB = 600 $ (Rich Northrop)
Total = 5,000 $ x 4 (Henry’s factor) <= 20 k$
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11LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
First tests with a small (30mm diameter) commercial MCP in vacuum, read with the 8” x 8” inside-out transmission lines scheme
Tests with a laser with or without a photo-cathode Check the signals at two ends
-First: SMAs + oscilloscope,- Actual cards with sampling ASICs and FPGA
Need :- The MCP- A fully functional tray (vacuum, HV access on top , anodes). - The ALD processed spacers for HV distribution.
Plans towards a tray
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Extra slides
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LAPD Collaboration Meeting, June 10-11th 2010, Argonne.13
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Tile assembly
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.
Inside out structure
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First Glass Box (May 18th J. Gregar)
LAPD Collaboration Meeting, June 10-11th 2010, Argonne.