6533b826fe1ef96bd1283c83
RESEARCH PRODUCT
A cylindrical GEM detector with analog readout for the BESIII experiment
D. BettoniR. BaldiniM. BertaniC. RosnerQ. OuyanChongyang LengF. De MoriM. MaggioraE. TskhadadzeX. JiM. GrecoGiulietto FeliciS. PacettiL. FavaM. DestefanisZ. LiuS. MarcelloS. SosioA. CalcaterraTord JohanssonA. ZalloM. YeM. GattaF. BianchiA. AmorosoPawel MarciniewskiS. CerioniL. ZottiJ. DongAngelo RivettiGianfranco MorelloR. FarinelliM. Y. DongM. MelchiorriJ. F. HuP. PatteriL. WuG. CottoS. SpataroHuaishen LiJ. ChaiL. WangV. CarassitiG. CibinettoE. FioravantiY. ZhangK. WangM. SavrieI. GarziaG. Mezzadrisubject
PhysicsNuclear and High Energy PhysicsGEMBESIII experiment; GEM; Micro-pattern gas detectors; Tracking detectorsPhysics::Instrumentation and Detectors010308 nuclear & particles physicsInstrumentationDetectorResolution (electron density)BESIII experimentMicro-pattern gas detectors01 natural sciencesMagnetic fieldAnodeNuclear physicsMomentumTracking detectorsParasitic capacitance0103 physical sciencesBESIII experiment; GEM; Micro-pattern gas detectors; Tracking detectors; Nuclear and High Energy Physics; Instrumentation010306 general physicsInstrumentationImage resolutiondescription
Abstract A cylindrical GEM detector with analog readout is under development for the upgrade of the Inner Tracker of the BESIII experiment at IHEP (Beijing). The new detector will match the requirements for momentum resolution ( σ pt / p t ~ 0.5 % at 1 GeV) and radial resolution ( σ xy ~ 120 μ m ) of the existing drift chamber and will improve significantly the spatial resolution along the beam direction ( σ z ~ 150 μ m ) with very small material budget (less than 1.5% of X 0 ). With respect to the state of the art the following innovations will be deployed: a lighter mechanical structure based on Rohacell, a new XV anode readout plane with jagged strip layout to reduce the parasitic capacitance, and the use of the analogue readout inside a high intensity magnetic field to have good spatial resolution without increasing the number of channels.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |