Difference between revisions of "Level 1 Trigger"

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[https://clonwiki.jlab.org/wiki/index.php/GE_XVB601 GE XVB601 controller setup (Hall-B page) ]
 
[https://clonwiki.jlab.org/wiki/index.php/GE_XVB601 GE XVB601 controller setup (Hall-B page) ]
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[[Media:TIMaster.pdf | TI-D manual ]]

Revision as of 16:55, 10 October 2011

This page is currently under construction



Level 1 Trigger Group

  • Physics: D.Doughty, A.Somov
  • Electronics & DAQ divisions (JLAB): C. Cuevas, A.Gupta, M.Taylor, J.Wilson, H.Dong, E.Jastrzembski, F.Barbosa, B.Raydo, D.Abbot


Trigger Workshop, 8 July 2009


Level 1 Trigger Goal

The main goal of the GlueX experiment is the search of exotic mesons produced in interactions of 8.4 - 9.0 GeV linearly polarized beam photons with a liquid hydrogen target. The beam photons are created by the 12 GeV electrons incident on a diamond crystal via bremsstrahlung process.

The GlueX detector will start taking data at a luminosity corresponding to about 107 photons per second in the photon-beam energy range of 8.4 < Eγ < 9.0 GeV. The Level-1 trigger has to reduce the rate from electromagnetic and hadronic interactions seen by the GlueX detector to a level acceptable by a data acquisition for writing events directly to tape, about 20 kHz. Later, the luminosity will be increased by an order of magnitude to 108 photons per second. For high-luminosity runs, events accepted by the Level-1 trigger will be sent to the thirt level trigger at the rate which should not exceed 200 kHz. The Level-3 trigger will perform an event reconstruction on a PC farm allowing to further resuce low-energy photon interactions and providing an additional rate reduction of about factor of 10. At the same time, the Level-1 trigger has to accept all multi-particle exotic meson candidates produced in the beam energy range E > 8 GeV.


Trigger Algorithm

Trigger Hardware

Reviews and Meetings

System and Integration Review, 7-9 May 2008 Review Site

Trigger Electronics Meetings Minutes

Useful Links

Manuals

register map for FADC250 V2

ADC FPGA Functional Description

F1TDC v1.2

FADC250 Data Format V1

Linux discless setup

GE XVB601 controller setup (Hall-B page)

TI-D manual