6533b835fe1ef96bd129ec87
RESEARCH PRODUCT
The COMPASS RICH-1 fast photon detection system
P. AbbonM. AlexeevH. AngererR. BirsaP. BordaloF. BradamanteA. BressanM. ChiossoP. CilibertiM.l. ColantoniT. DafniS. Dalla TorreE. DelagnesO. DenisovH. DeschampsV. DiazN. DibiaseV. DuicW. EyrichA. FerreroM. FingerM. Finger Jr.H. FischerS. GerassimovM. GiorgiB. GobboR. HagemannD. Von HarrachF.h. HeinsiusR. JoostenB. KetzerV.n. KolosovK. KönigsmannI. KonorovD. KramerF. KunneA. LehmannS. LevoratoA. MaggioraA. MagnonA. MannA. MartinG. MenonA. MutterO. NähleF. NerlingD. NeyretD. PanzieriS. PaulG. PesaroC. PizzolottoJ. PolakP. RebourgeardF. RobinetE. RoccoP. SchiavonC. SchillP. SchoenmeierW. SchröderL. SilvaM. SluneckaF. SozziL. SteigerM. SulcM. SvecS. TakekawaF. TessarottoA. TeufelH. Wollnysubject
PhysicsNuclear and High Energy PhysicsPhotomultiplierPhysics::Instrumentation and Detectorsbusiness.industryPhoton detectorDetectorlaw.inventionLens (optics)OpticsUpgradelawCompassSystems designOptoelectronicsHigh Energy Physics::ExperimentbusinessInstrumentationPhoton detectiondescription
Abstract A fast photon detection system has been built as a part of the upgrade of the COMPASS RICH-1 detector: it is based on 576 multi-anode photomultiplier tubes (MAPMTs) coupled to individual fused silica lens telescopes and fast readout electronics. This system has replaced the MWPCs with CsI photo-cathodes in the central region ( 1.3 m 2 , 25% of the total area) of the COMPASS RICH-1 photon detectors and has successfully been operated during the data taking in 2006 and 2007. We report about the fast photon detection system design, construction and commissioning, in particular about the design optimization and the validation tests of the lens telescopes. Preliminary values for the increased performances of COMPASS RICH-1 after the upgrade are also presented.
year | journal | country | edition | language |
---|---|---|---|---|
2008-09-01 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |