Phase-1 with new JEP Uli Schäfer Johannes Gutenberg-Universität Mainz Uli Schäfer 1.

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Presentation transcript:

Phase-1 with new JEP Uli Schäfer Johannes Gutenberg-Universität Mainz Uli Schäfer 1

New Jet/Energy processor JEP will be of very old age by time of phase-1 upgrade Limited availability of spares FPGAs not supported by current design tools LArg signals will be available optically at high granularity for phase 1 Tile optical signals might become available at a later stage JEP comprised of JEMs, based on modular concept (mezzanines)  Staged upgrade of JEP, so as to guarantee smooth changeover. Minimal approach: Increase JEM optical output capacity by renewal of low-cost daughter modules Add nJEP processor next to topology processor module, to receive JEM optical real-time output Keep JEP running while nJEP being commissioned… Eventually switch to nJEP based jet trigger Use old JEMs for e/o conversion of tile signals only Replace JEMs with simple and cheap converter modules as further spares are required In case we were running into a latency crisis, full JEP replacement by o/e converter modules would be effective and affordable Uli Schäfer 2

Phase-1 upgrade with new JEP Uli Schäfer 3 nJEP tile Jul. 28, nJEP See next slide

nJEP : improving performance Minimal approach is basically just a replacement of aging JEP nJEP to provide plenty of spare input capacity. Use it for considerable improvement of physics performance Improve algorithms by making use of finer granularity available from DPP Consider feeding nJEP directly from PPr, at granularity of up to 0.1×0.1 in η×φ Switch to high granularity optical input directly from tile, as it becomes available nJEP to be built phase-2 compliant ! Uli Schäfer 4