Difference between revisions of "Level-1 Trigger"
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[[PS and ST]] | [[PS and ST]] | ||
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| + | [[ Typical Latency ]] | ||
=== Monitoring === | === Monitoring === | ||
| − | [[ | + | [[Scaler specifications]] |
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| + | [[Scaler server / client]] | ||
=== Hardware === | === Hardware === | ||
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[[Optical link connections | Optical link connections]] | [[Optical link connections | Optical link connections]] | ||
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| + | [[ TS front panel connections | TS front panel connections ]] | ||
=== Reviews and Meetings === | === Reviews and Meetings === | ||
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* [[ Barrel Calorimeter ]] | * [[ Barrel Calorimeter ]] | ||
| − | * [[Trigger Commissioning]] | + | * [[Trigger Commissioning Plans]] |
| − | * [https://logbooks.jlab.org/book/halld | + | * [https://logbooks.jlab.org/book/halld Electronic Logbook] |
=== Manuals === | === Manuals === | ||
* [[Media:JlabModuleDataFormat.pdf|VME Data Format Standards for JLAB Modules]] | * [[Media:JlabModuleDataFormat.pdf|VME Data Format Standards for JLAB Modules]] | ||
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/F1TDC F1TDC ] |
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/FADC250 FADC 250 ] |
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/TI TI manuals ] |
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/CTP CTP manuals ] |
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/FANIO FANIO manual ] |
| − | * [https:// | + | * [https://halldweb.jlab.org/level-1/manuals/CAEN1290/caen_v1290.pdf CAEN1290 TDC ] |
* [https://coda.jlab.org/wiki/index.php/Linux_Diskless_Setup Linux discless setup ] | * [https://coda.jlab.org/wiki/index.php/Linux_Diskless_Setup Linux discless setup ] | ||
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=== Useful Links === | === Useful Links === | ||
[[How To]] | [[How To]] | ||
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| + | === Run Period Trigger Summaries === | ||
| + | |||
| + | * [[Spring 2016 Trigger Summary]] | ||
| + | * [[Spring 2017 Trigger Summary]] | ||
Revision as of 07:16, 21 March 2017
Contents
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 reduce 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.
Hardware Algorithms
Monitoring
Hardware
Reviews and Meetings
- 12 GeV Trigger Workshop, CNU, July 2010
- 12 GeV Trigger Workshop, CNU, July 2009
- Subsystems Review, JLab, May 2008
Beam Tests
- Microscope Hall-B beam test, 2011
- FCAL Hall-B beam test, 2011
- BCAL beam test, 2012
- Pair Spectrometer Hall-B beam test, 2012
