Spectrometers for recording electromagnetic showers emerging from oriented crystals

Author: Baskov V.   Belousov A.   Kim V.   Malinovskii E.   Usik A.   Khablo V.  

Publisher: MAIK Nauka/Interperiodica

ISSN: 0020-4412

Source: Instruments and Experimental Techniques, Vol.54, Iss.5, 2011-09, pp. : 660-667

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Abstract

The design and main characteristics of combined shower spectrometers (CSSs) are presented: combined Cherenkov and lead-scintillation spectrometers that are intended for investigating shower processes in oriented crystals and that consist of ten independent lightproof counters with thicknesses of 1X0 and 1.18X0, respectively. At an electron energy E E = 26 GeV, the energy resolutions of both CSSs together with a Cherenkov spectrometer with a thickness of 15X0, which was placed behind them, were 2.4 and 4.3% for the combined Cherenkov and lead-scintillation shower spectrometers, respectively.