Electron emission properties of two-phase argon and argon-nitrogen avalanche detectors
arXiv:0908.2915 · doi:10.1088/1748-0221/4/09/P09013
Abstract
Electron emission properties of two-phase Ar avalanche detectors are studied. The detectors investigated comprised a liquid Ar or Ar+N2 layer followed by a multi-GEM multiplier operated in the saturated vapour at 84 K. Two components of the electron emission through the liquid-gas interface were observed: fast and slow. In Ar, the slow emission component dominated even at higher fields, reaching 2 kV/cm. In Ar+N2 on the contrary, the fast emission component dominated at higher fields, the slow component being disappeared. This is explained by the electron backscattering effect in the gas phase. The slow component decay time constant was inversely proportional to the electric field, which is compatible with thermionic emission model. The electron emission efficiencies in two-phase Ar and Ar+N2 were estimated to be close to each other.
23 pages, 15 figures, to be submitted to JINST
References in corpus (12)
- First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground Laboratory
- Advances in Thick GEM-like gaseous electron multipliers. Part I: atmospheric pressure operation
- Two-Phase Emission Detector for Measuring Coherent Neutrino-Nucleus Scattering
- ArDM: a ton-scale liquid Argon experiment for direct detection of Dark Matter in the Universe
- Two-phase argon and xenon avalanche detectors based on Gas Electron Multipliers
- Optical readout tracking detector concept using secondary scintillation from liquid argon generated by a thick gas electron multiplier
- Thick GEM versus thin GEM in two-phase argon avalanche detectors
- Detection of reactor antineutrino coherent scattering off nuclei with a two-phase noble gas detector
- First results from cryogenic avalanche detectors based on gas electron multipliers
- First results of the two-phase argon avalanche detector performance with CsI photocathode
- Recent results on the properties of two-phase argon avalanche detectors
- Study of ionization signals in a TPC filled with a mixture of liquid Argon and Nitrogen
Cited by in corpus (19)
- Low-Mass Dark Matter Search with the DarkSide-50 Experiment
- Constraints on Sub-GeV Dark Matter-Electron Scattering from the DarkSide-50 Experiment
- Liquid noble gas detectors for low energy particle physics
- Advances in Cryogenic Avalanche Detectors
- Revealing neutral bremsstrahlung in two-phase argon electroluminescence
- Direct observation of avalanche scintillations in a THGEM-based two-phase Ar avalanche detector using Geiger-mode APD
- Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel
- Electroluminescence and electron avalanching in two-phase detectors
- Gain limits of a Thick GEM in high-purity Ne, Ar and Xe
- Geiger Mode APD performance in a cryogenic two-phase Ar avalanche detector based on THGEMs
- Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV
- Electron transport and electric field simulations in two-phase detectors with THGEM electrodes
- First demonstration of a bubble-assisted Liquid Hole Multiplier operation in liquid argon
- Puzzling time properties of proportional electroluminescence in two-phase argon detectors for dark matter searches
- Ionization signals from electrons and alpha-particles in mixtures of liquid Argon and Nitrogen - perspectives on protons for Gamma Resonant Nuclear Absorption applications
- Observation of unusual slow components in electroluminescence signal of two-phase argon detector
- Study of infrared scintillations in gaseous and liquid argon - Part II: light yield and possible applications
- Performance degradation of Geiger-mode APDs at cryogenic temperatures
- Unraveling the puzzle of slow components in gaseous argon of two-phase detectors for dark matter searches using Thick Gas Electron Multiplier