6533b86ffe1ef96bd12ce923

RESEARCH PRODUCT

PERFORMANCE OF THE ALEPH TIME PROJECTION CHAMBER

H. SchmidtT. BarczewskiF. SteegW. B. AtwoodJ. A. WearJuergen ThomasH. RotscheidtD. CinabroD. F. CowenSau Lan WuA. RothW. BlumU. StierlinR. SettlesB. W. LeclaireI. Ten HaveM. SchmellingM. J. PriceStephen HaywoodR. C. JaredS. RoehnKonrad KleinknechtW. TejessyD. PollmannF. FidecaroThomas LohseD. SchlatterJ. R. PaterIlias EfthymiopoulosA. MintenP. FaureM. TakashimaA. W. HalleyR. P. JohnsonA. LusianiZ. Y. FengD. LuekeG. StefaniniG. A. CowanWerner WiedenmannJ. S. ConwayL. BellantoniA. JahnRobert RichterFabio MorsaniB. GobboW. RichterJ. MayJ. SchroederL. RolandiJ. F. BoudreauMatthias KasemannL.a.t. BauerdickE. BlucherA. VayakiO. BoyleI. LehrausP. S. MarrocchesiT. C. MeyerW. WitzelingB. Lofstedt

subject

PhysicsNuclear and High Energy PhysicsTime projection chamberPhysics::Instrumentation and DetectorsTracking (particle physics)Particle identificationParticle detectorMomentumNuclear physicsAzimuthPair productionHigh Energy Physics::ExperimentDetectors and Experimental TechniquesInstrumentationImage resolution

description

The performance of the ALEPH Time Projection Chamber (TPC) has been studied using data taken during the LEP running periods in 1989 and 1990. After correction of residual distortions and optimisation of coordinate reconstruction algorithms, single coordinate resolutions of 173-mu-m in the azimuthal and 740-mu-m in the longitudinal direction are achieved. This results in a momentum resolution for the TPC of DELTA-p/p2 = 1.2 x 10(-3) (GeV/c)-1. In combination with the ALEPH Inner Tracking Chamber (ITC), a total momentum resolution of DELTA-p/p2 = 0.8 x 10(-3) (GeV/c)-1 is obtained. With respect to particle identification, the detector achieves a resolution of 4.4% for the measurement of the ionisation energy loss.

yearjournalcountryeditionlanguage
1991-01-01
10.1016/0168-9002(91)90038-rhttps://hdl.handle.net/11384/6730