ATLAS MDT Electronics Photos

Here are some photos of the current prototype hedgehog and mezzanine cards being built in Boston. Click on the photos to zoom in.

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Here is the stack with 3x8 signal hedgehog board and prototype mezzanine board.

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Signal hedgehog board only.

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Close-ups of hedgehog board (top view) showing layout details.

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Close-up of hedgehog board on end-plugs. Note that the ground pin nuts and gas jumpers are missing from our model

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Top view of prototype mezzanine card.
This differs substantially from the final design and is shown to illustrate size only.

The gold-colored daughtercard holds a prototype ASDLite chip for testing. The module-zero version now under development will have (6) four-channel ASDLite chips (in standard plastic IC packages) and one AMT-0 TDC.

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Side view showing the board stack.