An electroluminescence emission detector to search for positron double-beta decays of /sup 124/Xe and of /sup 78/Kr

Bolozdynya, A.; Egrov, V.; Koutchenkov, A.; Safronov, G.A.; Smirnov, G. N.; Medved, S.; Morgunov, V.

doi:10.1109/nssmic.1996.591409

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…This could be of an advantage for large-volume, high-pressure detectors for applications in X-and γ-ray imaging and spectrometry. For example, Kr-filled detectors were already proposed for applications in digital radiography [4] and double-beta decay [5], using twophase detectors; its natural-radioactivity background will not seriously affect these applications, due to the high-intensity incident radiation in radiography or the possibility of efficient background discrimination in the rare-event experiments.…”

Section: Introductionmentioning

confidence: 99%

THGEM electron multiplier in high pressure Kr

et al. 2009

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The properties of the THick Gas Electron Multiplier (THGEM) operated with soft X-rays in Kr at room temperature, are presented. Charge gains ranging from 10 4 to 3×10 2 and from 4×10 4 to 10 3 were reached with single-and double-THGEM detectors in a pressure range of 0.5-3.0 bar, respectively, for operation voltages in the range of 800-2600 V. The gain was limited by photon-and ion-feedback effects, and by electron field-emission from the Cu-electrodes at THGEM operation voltages above 2000 V. Energy resolutions in the range of 21-34% FWHM were measured with 5.9 keV X-rays. Other characteristics, including pulse-shape and electric fields in THGEM structures, are discussed.

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Section: Introductionmentioning

confidence: 99%

THGEM electron multiplier in high pressure Kr

et al. 2009

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“…However, for high-pressure gas fillings, thick quartz windows are needed for GPSC-photosensor coupling, which absorb a significant amount of scintillation and are a drawback for applications where large detection areas are needed. Alternative use of organic wavelength-shifters [2] presents also problems due to aging and to the need for high gas purity. To overcome these limitations we propose the use of gas proportional scintillation counter/microstrip gas chamber (GPSC/MSGC) hybrid detectors [3], [4] for high-pressure applications.…”

Section: Introductionmentioning

confidence: 99%

High-pressure xenon GPSC/MSGC hybrid detector

Covita

Veloso

Amaro

et al. 2003

IEEE Trans. Nucl. Sci.

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Gas proportional scintillation counter/microstrip gas chamber (GPSC/MSGC) hybrid detectors are based on a xenon-GPSC instrumented with a CsI-coated microstrip plate photosensor placed directly within the xenon envelope as a substitute for the photomultiplier tube. This design avoids the constraints due to the use of a quartz scintillation window for GPSC-photosensor coupling, which absorbs a significant amount of scintillation and is a drawback for applications where large detection areas and high filling pressures are needed. In this paper, we investigate the performance of a high-pressure GPSC/MSGC hybrid detector operating at 1, 1.5, 2, 2.5, and 2.85 atm. Detector energy resolution, light gain, and photosensor gain are studied as a function of the gas pressure from 1 to 2.85 atm and for different X-ray energies in the range of 6 to 88 keV. Energy resolutions of 11%, 5.5%, 3.4%, and 3% where obtained for 5.9 keV, 22 keV, 60 keV, and 88 keV. No degradation of the detector performance was observed with increasing pressure, from 1 atm up to 2.85 atm.

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“…One of the first such kind of detectors has been constructed at the beginning of 80s for medical gamma ray imaging (Fig.3, [9]). Later, threedimensional position sensitivity in high-pressure xenon electroluminescence detector triggered with primary scintillation has been demonstrated [10]. Both detectors have used array of nineteen 3"-diameter photomultiplier arrays for position sensitive detection of gamma radiation.…”

Section: Emission Detectorsmentioning

confidence: 99%

Two-phase electron emission radiation detectors

Bolozdynya

IEEE International Conference on Dielectric Liquids, 2005. ICDL 2005.

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A new class of two-phase electron emission detectors has been introduced in experimental practice recently. The detectors employ effect of effective extraction of excess electrons from some condensed nonpolar dielectrics into equilibrium gas phase under influence of external electric field. This approach allows combination of massive working media for detection of rare events with gas-discharge or electroluminescence of rarefied media used for amplification of signals originated from a few or even singular electrons. Properties of working media suitable for emission detectors are discussed.Applications of two-phase dielectrics for detection of radiation and exotic particles are reviewed.

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An electroluminescence emission detector to search for positron double-beta decays of /sup 124/Xe and of /sup 78/Kr

Cited by 3 publications

References 13 publications

THGEM electron multiplier in high pressure Kr

THGEM electron multiplier in high pressure Kr

High-pressure xenon GPSC/MSGC hybrid detector

Two-phase electron emission radiation detectors

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