Published January 2010 | Version v1
Journal article Metadata-only

Towards THGEM UV-photon detectors for RICH: on single-photon detection efficiency in Ne/CH4 and Ne/CF4

Creators

  • 1. I3N - Departamento de Fisica, Universidade de Aveiro, Campus Universitario de Santiago 3810-193 Aveiro (Portugal)
  • 2. Department of Particle Physics, Weizmann Institute of Science, 76100, Rehovot (Israel)
  • 3. Departamento de Fisica, Universidade de Coimbra, P-3004-516, Coimbra (Portugal)

Description

The article deals with the detection efficiency of UV-photon detectors consisting of Thick Gas Electron Multipliers (THGEM) coated with CsI photocathode, operated in atmospheric Ne/CH4 and Ne/CF4 mixtures. We report on the photoelectron extraction efficiency from the photocathode into these gas mixtures, and on the photoelectron collection efficiency into the THGEM holes. Full collection efficiency was reached in all gases investigated, in some cases at relatively low multiplication. High total detector gains for UV photons, in excess of 105, were reached at relatively low operation voltages with a single THGEM element. We discuss the photon detection efficiency in the context of possible application to RICH.

Availability note (English)

Available from http://dx.doi.org/10.1088/1748-0221/5/01/P01002

Additional details

Identifiers

DOI
10.1088/1748-0221/5/01/P01002;

Publishing Information

Journal Title
Journal of Instrumentation
Journal Volume
5
Journal Issue
01
Journal Page Range
p. P01002
ISSN
1748-0221

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41100510
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
CARBON TETRAFLUORIDE; DETECTION; EFFICIENCY; ELECTRIC POTENTIAL; ELECTRON MULTIPLIERS; EXTRACTION; GAIN; GASES; METHANE; MIXTURES; OPERATION; PHOTOCATHODES; PHOTONS
Descriptors DEC
ALKANES; AMPLIFICATION; BOSONS; CATHODES; DISPERSIONS; ELECTRODES; ELECTRON TUBES; ELEMENTARY PARTICLES; FLUIDS; FLUORINATED ALIPHATIC HYDROCARBONS; HALOGENATED ALIPHATIC HYDROCARBONS; HYDROCARBONS; MASSLESS PARTICLES; ORGANIC COMPOUNDS; ORGANIC FLUORINE COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; SEPARATION PROCESSES