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The XPP large detector is 4Mpx and 25kHz.  From Vincent: Two multimode MPO 24 fiber bundles per megapixel (8 bundles total) to the MM to SM conversion box. This means 8x24=192 fibers (96 pairs) which is 2 full SM-MM conversion box. (Aside: The SparkPix scales similarly with the number of pixels, so it only needs 24 fibers (1x MPO 24)).

For TXI (2Mpx 5kHz) based on the epixhremu study from ric/stefano/valerio/mikhail/mona it feels like there is a good chance we can do it on 20 nodes with CPU (each with ~50 cores).  The XPP detector has 10x that data volume, and 200 nodes feels too difficult.

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