The HERMES Dual-Radiator Ring Imaging Cerenkov Detector

Abstract

The construction and use of a dual radiator Ring Imaging Cerenkov(RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasizes measurements of semi-inclusive deep-inelastic scattering. It provides particle identification for pions, kaons, and protons in the momentum range from 2 to 15 GeV, which is essential to these studies. The instrument uses two radiators, C4F10, a heavy fluorocarbon gas, and a wall of silica aerogel tiles. The use of aerogel in a RICH detector has only recently become possible with the development of clear, large homogeneous and hydrophobic aerogel. A lightweight mirror was constructed using a newly perfected technique to make resin-coated carbon-fiber surfaces of optical quality. The photon detector consists of 1934 photomultiplier tubes for each detector half, held in a soft steel matrix to provide shielding against the residual field of the main spectrometer magnet.

25 pages, 23 figures

References in corpus (2)

• The HERMES Spectrometer
• Study of a Threshold Cherenkov Counter Based on Silica Aerogels with Low Refractive Indices

Cited by in corpus (40)

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• Measurement of Parton Distributions of Strange Quarks in the Nucleon from Charged-Kaon Production in Deep-Inelastic Scattering on the Deuteron
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• Flavor decomposition of the sea quark helicity distributions in the nucleon from semi-inclusive deep-inelastic scattering
• Measurement of single-spin azimuthal asymmetries in semi-inclusive electroproduction of pions and kaons on a longitudinally polarised deuterium target
• Technical Design Report for the: PANDA Straw Tube Tracker
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• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Leading-Order Determination of the Gluon Polarization from high-$p_T$ Hadron Electroproduction
• Cross sections for hard exclusive electroproduction of pi+ mesons on a hydrogen target
• Beam-Spin Asymmetries in the Azimuthal Distribution of Pion Electroproduction
• Studies of Proximity Focusing RICH with an aerogel radiator using Flat-panel multi-anode PMTs (Hamamatsu H8500)
• Single-spin azimuthal asymmetry in exclusive electroproduction of pi+ mesons on transversely polarized protons
• Spin Density Matrix Elements in Exclusive rho^0 Electroproduction on 1H and 2H Targets at 27.5 GeV Beam Energy
• Multidimensional Study of Hadronization in Nuclei
• Longitudinal Spin Transfer to the $\Lambda$ Hyperon in Semi-Inclusive Deep-Inelastic Scattering
• Inclusive Measurements of Inelastic Electron and Positron Scattering from Unpolarized Hydrogen and Deuterium Targets
• AI-optimized detector design for the future Electron-Ion Collider: the dual-radiator RICH case
• Transverse Polarization of Lambda and Lambda-bar Hyperons in Quasireal Photoproduction
• Search for an exotic S=-2, Q=-2 baryon resonance at a mass near 1862 MeV in quasi-real photoproduction
• CKM Results From CLEO
• Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction
• Longitudinal double-spin asymmetries in semi-inclusive deep-inelastic scattering of electrons and positrons by protons and deuterons
• Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets
• Optical and radiographical characterization of silica aerogel for Cherenkov radiator
• Ratios of helicity amplitudes for exclusive ${\rho }^0$ electroproduction on transversely polarized protons
• Machine Learning for Imaging Cherenkov Detectors
• The Time-of-Flight Technique for the HERMES Experiment
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• Tests of a proximity focusing RICH with aerogel as radiator
• Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons
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