7 november 1997A) TRIGGER TECHNICAL NOTESLEVEL 0 (information supplied by Sergio Conetti)
LEVEL 1 (information from Ueli Straumann)Readout: J. Buytaert, H. Dijkstra, H. Mueller, ( H. Dijkstra started) Comparison of analog and binary readout versus physics: P.Koppenburg (draft exists) Trigger algorithm and physics performance: T. Ruf (draft exists) Trigger Implementation: J.Buytaert, H.Mueller, M. Koratzinos and P. Mato (draft exists) Tracking Trigger performance: Peter Schleper - Dataflow diagram available Tracking Trigger impelmentation: Michael Cuje - Implementation block diagram available Ueli Straumann - Performance plots available Level 2Performance: John Holt, Frederic Teubert , Ian Tomalin (draft available) Level 3Performance: Alex Nippe Guy Wilkinson, Patrick Koppenburg (some preliminary results available) Global trigger performance and optimizationPeter Schleper, Claire Shepherd. -T., Guy Wilkinson, Hans Dijkstra - This will be a last minute item. B) DAQ TECHNICAL NOTES (Input from Frank Harris)Requirements (Editor F Harris) A draft exists but has to be updated with the new information of the last week. Included here is information which presumably also will be in FE Electronics specs. However I include it as an appendix for ease of reference for the reader. I will be updating document with 'system' requirements for things like error recovery. The document will evolve for quite a while but certainly by mid November a publishable (on WWW) version should exist. From this we will glean the key pages for the TP. Architecture (Ed B Jost) A draft exists. Again this will evolve, and we expect a reasonable version should exist by mid November on which we will base material for the TP. Modelling DAQ (Ed L Camacho) A first version exists describing the Foresight work. We expect (hope) this to include more modelling results by end November, from which we could extract material for the TP. DCS Requirements (Ed. P.Mato - in conjunction with Alice) This is quite a mature document, and can certainly be used as the basis of statements for the TP. Implementation Studies (Ed. J P Dufey) Drafting has begun. Jean Pierre and Irakli Mandjavidze have done much of the preparatory work. It will be written largely from general consideration, but then with reference to specific technologies. A reasonable first draft is aimed for by end November. C) COMPUTING TECHNICAL NOTES (information supplied by John Harvey)Computing Tasks (Ed P.Binko) A first draft exists. The strategy for collecting requirements is defined. Questionnaires have been sent to detector coordinators, concerning details of the reconstruction and to the Level 2 and Level 3 groups concerning trigger algorithm requirements. Computing Model (Ed A. Pacheco) A first draft exists. This will be a very preliminary study and will evolve as our requirements are better understood. Software Strategy (Ed E van Herwijnen) A fairly complete draft exists. Major issues are tackled. Paradigm proposed and importance of standards and architecture stressed. Planning (Ed. J.Harvey) A first draft exists. Migration strategy, prototype and production phases are proposed. A draft workplan Exists. Manpower planning and costing remains to be done. N.B. Much new material which must be discussed at next collaboration meeting. FRONT-END ELECTRONICS TECHNICAL NOTES (Information from Jorgen Christiansen)The technical notes planned to be made for the front-end electronics of LHCb are the following:
The front-end electronics task force should write the three first. Unfortunately I will not have much time during the coming month. Currently the only real document on the architecture of the front-end electronics is my paper from the LERB conference in London. This can certainly be brought up-to-date and used as the basis of the overview of the FE electronics. The TTC note will be written by Beat Jost. The sub-detector groups must write the other notes on the different sub-detectors. TECHNICAL PROPOSAL RESPONSIBILITIES AND TIMESCALESResponsibility for trigger sections allocated as follows:
The last chapter was (at least partly) supposed to be included in the physics chapter of the TP. Some clarification needed of what comes in the trigger and what in the physics chapter. Plans for Level 0 section: Sergio plans to concentrate on writing starting the week of Nov 24th. Plans for Level 1 section Write in second half of November Plans for DAQ section The framework should be agreed by beginning of next week, and that we then start writing based on the material we already have. Plans for Computing Section
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