Advances in vacuum ultraviolet detection with multistep gaseous detectors and application to Cherenkov ring imaging

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The multistep avalanche chamber permits an efficient detection of VUV photons. In a two-step proportional mode charges higher than 1 pC are obtained from single electrons. By using as the final localization step a spark chamber viewed by a TV digitizer it is easy to have imaging of complex patterns....

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Detalles Bibliográficos
Autores principales: Breskin, Amos, Cattai, A, Charpak, Georges, Peisert, Anna, Policarpo, Armando, Sauli, Fabio
Lenguaje:eng
Publicado: 1981
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1109/TNS.1981.4331212
http://cds.cern.ch/record/878287
Descripción
Sumario:The multistep avalanche chamber permits an efficient detection of VUV photons. In a two-step proportional mode charges higher than 1 pC are obtained from single electrons. By using as the final localization step a spark chamber viewed by a TV digitizer it is easy to have imaging of complex patterns. This is applied to Cherenkov ring imaging and (K, pi ) separation with 3 sigma up to 320 GeV is envisaged. The properties of various photoionizable vapours have been studied. By combining a scintillation xenon chamber with a photoionization wire chamber, a resolution of 8.3% (FWHM) has been obtained for 5.9 keV X- rays using tetrakis(dimethylamine)-ethylene vapour. (15 refs).

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