Title of article
eXtremely Fast Tracker trigger upgrade at CDF
Author/Authors
Abulencia، نويسنده , , A. and Azzurri، نويسنده , , Daniel P. and Cochran، نويسنده , , E. and Cox، نويسنده , , C. and Cox، نويسنده , , D. and Dittmann، نويسنده , , J. and Donati، نويسنده , , S. and Efron، نويسنده , , J. and Erbacher، نويسنده , , R. and Errede، نويسنده , , D. and Fedorko، نويسنده , , I. and Flanagan، نويسنده , , G. and Forrest، نويسنده , , R. and Gerberich، نويسنده , , H. and Gartner، نويسنده , , J. and Hewamanage، نويسنده , , S. and Holm، نويسنده , , S. and Hughes، نويسنده , , R. and Ivanov، نويسنده , , A. and Jones، نويسنده , , T. and Johnson، نويسنده , , Craig M. and Junk، نويسنده , , T. and Kasten، نويسنده , , M. and Kilminster، نويسنده , , B. and Klein، نويسنده , , R. and Krumnack، نويسنده , , N. and Lannon، نويسنده , , K. and Levine، نويسنده , , S. K. Lister، نويسنده , , A. and McKim، نويسنده , , J. and Mokos، نويسنده , , R. S. Olivito، نويسنده , , D. M. Parks ، نويسنده , , B. and Pitts، نويسنده , , K. and Rogers، نويسنده , , E. and Sartori، نويسنده , , L. and Schmidt، نويسنده , , E. and Scott، نويسنده , , L. and Shaw، نويسنده , , T. and Slaunwhite، نويسنده , , J. A. SOHA، نويسنده , , A. and Veramendi، نويسنده , , G. and Wilson، نويسنده , , P.J. and Wilson، نويسنده , , J.S. and Winer، نويسنده , , B.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
3
From page
328
To page
330
Abstract
The CDF II eXtremely Fast Tracker (XFT) is a trigger processor which reconstructs charged particle tracks in the transverse plane of the central tracking chamber. The XFT tracks are also extrapolated to the electromagnetic calorimeter and muon chambers to generate trigger electron and muon candidates. The XFT is crucial for the entire CDF II physics program: it detects high P t lepton from W / Z and heavy flavors decay and, in conjunction with the level 2 processor, it identifies secondary vertices from beauty decay. The XFT has thus been crucial for the recent measurement of the B s 0 oscillation and Σ b . The increase of the Tevatron instantaneous luminosity demanded an upgrade of the system to cope with the higher occupancy of the chamber. In the upgraded XFT, three-dimensional tracking reduces the level of fake tracks and measures the longitudinal track parameters, which strongly reinforce the trigger selection. This allows to maintain the trigger perfectly efficient at the record luminosities 2 – 3 × 10 32 cm - 2 s - 1 and to maintain intact the CDF II high luminosity physics program, which includes the Higgs search. In this paper we review the architecture, the used technology, the performance and the impact of the upgraded XFT on the entire CDF II trigger strategy.
Keywords
eXtremely Fast Tracker , Tevatron , CDF , trigger
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2009
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2210586
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