6533b86efe1ef96bd12cc004
RESEARCH PRODUCT
The ATLAS level-1 trigger: Status of the system and first results from cosmic-ray data
Gabriele ChiodiniThomas TrefzgerHans-christian Schultz-coulonF.c. PastoreGianpaolo CarlinoBarbara LibertiT. SugimotoM. DogaruS. PatricelliA. R. GillmanStephen HillierA. Di MattiaJ. R.a. BoothJ. R.a. BoothD. BoscheriniN. KanayaT. NiwaN. LupuA. SalamonM. BendelP. GallnoD. De PedisYorito YamaguchiUli SchäferClaudio LuciKunihiro NaganoEnrico PasqualucciPaolo IengoVincenzo IzzoV. LendermannS. AskE. E. WoehrlingB. BaussP. M. WatkinsP. AdragnaAlan WatsonC. J. CurtisDavid BergeKiyotomo KawagoeF. GrancagnoloO. Bahat TreidelS. ConstantinT. KobayashiH. Pessoa LimaD. DellavolpeYoji HasegawaS. BresslerM. BigliettiYasuyuki OkumuraStefano VenezianoM. PerantoniD. P. F. PrieurNicolas EllisJohannes HallerHiroyuki IwasakiR. SantonicoL. ZanelloErez EtzionS. I. BudaT. KadosakaR. DeasmundisA. RoichG. CiapettiR. PerrinoTohru TakeshitaG. MahoutD. CaracinhaAnna Rita MigliaccioShlomit TaremR. AchenbachA.o. DavisA. HidvegiSamuel SilversteinV.j.o. PereraPaolo CamarriStefan TapproggeH. OshitaGiulio AielliF. SpilaH. TakedaYuta TakahashiI.p. BrawnMasaya IshinoH. KiyamuraR. LifshitzE. EisenhandlerVincenzo CanaleEnrique KajomovitzYorihito SugayaFrancesco ConventiPaul HankeLorne LevinsonEmilio PetroloAleandro NisatiC. N. P. GeeM.r. ColucciaK. MahboubiM. JohansenStefania SpagnoloGiora MikenbergH. NomotoS. AntonelliThilo PaulyHiroshi SakamotoT. KohnoMichele BiancoT. KawamotoRainer StamenF. FöhlischRoberto CardarelliA. PoliniDaniel LellouchAlberto AloisioP. KlofverJ. P. ThomasMurrough LandonM. DellapietraA. DiciaccioT. KuwabaraC. OmachiW. QianRiccardo VariMargherita PrimaveraMitsuaki NozakiOsamu SasakiP.j.w. FaulknerK. MeierAttila KrasznahorkayChikara FukunagaMariagrazia AlviggiF. MarcheseC. GewenigerR.j. StaleyMasahiro IkenoDave CharltonE. E. KlugeSten HellmanA. Di GirolamoR. SpiwoksV. AndreiMasaharu NomachiP. GiustiMakoto TomotoP. WeberA. BruniChristian OhmY. BenhammouSatoshi TanakaM. PectuEdoardo GoriniGivi SekhniaidzeK. SchmittFrederik RührL. BellagambaC. BohmTakashi KubotaS. HaasG. SchulerHisaya KurashigeYoshiji YasuAtsuhiko OchiG. BruniDave SankeyS. RiekeP. FarthouatBruce BarnettS. Ben AmiStefano RosatiJ.m. De SeixasE. SolfaroliThorsten WenglerGiuseppe Iacobuccisubject
Nuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsPhysics::Instrumentation and DetectorsAtlas detectoratlas; cosmic-ray data; installation and commissioning; trigger systemFOS: Physical sciencesCosmic rayinstallation and commissioningNuclear physicsSoftwareAtlas (anatomy)medicineatlascosmic-ray dataDetectors and Experimental TechniquesInstrumentationPhysicstrigger systemLarge Hadron ColliderLuminosity (scattering theory)business.industrySettore FIS/01 - Fisica SperimentaleDetectorInstrumentation and Detectors (physics.ins-det)medicine.anatomical_structurePhysics::Accelerator PhysicsGranularitybusinessdescription
The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. At the design luminosity of 10^34 cm^-2 s^-1 there are on average 23 collisions per bunch crossing. A three-level trigger system will select potentially interesting events in order to reduce the read-out rate to about 200 Hz. The first trigger level is implemented in custom-built electronics and makes an initial fast selection based on detector data of coarse granularity. It has to reduce the rate by a factor of 10^4 to less than 100 kHz. The other two consecutive trigger levels are in software and run on PC farms. We present an overview of the first-level trigger system and report on the current installation status. Moreover, we show analysis results of cosmic-ray data recorded in situ at the ATLAS experimental site with final or close-to-final hardware.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-07-27 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |