| Title |
The SVT Bypass for a Forward lepton wide coverage in the CDF Trigger |
Submitted |
16-JAN-07 09:42 (UTC -06:00) |
| Classification |
Trigger and Data Acquisition |
Modified |
22-MAR-07 17:22 (UTC -05:00) |
| Session |
PS2C |
Presentation |
Poster |
| Presenter |
Laura Sartori |
Paper ID |
PS2C006 |
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Paper PDF |
Download |
| Author(s) |
Laura Sartori, Camille Ginsburg (Fermilab, Batavia, Illinois), Alessandro Cerri (CERN, Geneva), Mauro Dell'Orso, Paola Giannetti, Marco Piendibene, Lucas Rogondino (INFN Pisa, Pisa), Alberto Annovi, Stefano Torre (INFN/LNF, Frascati (Roma)), Pierluigi Catastini (UNISI, Siena), James Bellinger (UW-Madison/PD, Madison) |
| Abstract |
The Silicon-Vertex-Trigger (SVT)[*] at CDF is made of two pipelined processors: the Associative-Memory, AM[**], finding low precision tracks and the Track-Fitter, TF, refining the track quality with high-precision fits. We propose to extend the SVT use, now mostly focused on B-physics, to high-PT physics. SVT is easily improved working on firmware, or connecting the SVT boards with other Pulsars in a lego-structure. In particular, SVT can extend the prompt-lepton acceptance providing silicon-only tracks where the drift-chamber coverage is missing (1<|eta|<2). Since prompt-leptons from high-PT events do not require precise impact-parameter measurement, we enlarge the AM use only, defining very thin roads (no need for TF fit), to detect tracks above a defined PT threshold. We create a bypass that brings the new thin roads tagged by AM, directly to the level-2 CPUs. While the slower full-resolution path (TF) will have to digest the normal AM road production, four new Pulsars crunch/deliver new roads from AM to L2-CPUs. All the hardware exists, needs only to be assembled. We present the bypass-architecture, the forward-track quality and their use in Higgs triggers. |
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Word Count: 179 Character Count: 1155 |
| Footnote |
* The CDF Silicon Vertex Tracker. Nucl.Instr. and Meth
** A VLSI Processor for Fast Track Finding Based on Content Addressable Memories. Nucl.Sci,IEEE Transaction
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| Funding Agency |
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