Effect of oriented crystalline converter temperature on spectrometer response |
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| Authors: | V A Baskov V V Kim B I Luchkov V Yu Tugaenko V A Khablo |
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| Institution: | 1. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia
2. National Research Nuclear University ??MEPhI??, Kashirskoe sh. 31, Moscow, 115549, Russia
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| Abstract: | Cooling of a 1-mm crystalline tungsten converter oriented along the ??111?? axis situated in front of an electromagnetic spectrometer of thickness 25X 0, recording showers of 28-GeV electrons, to a temperature of 77 K results in a decrease of the crystal radiation length by ??30%, shifts the cascade curve of the shower development in the spectrometer by ??7%, and improves the spectrometer energy resolution by ??5% in comparison with similar parameters of the spectrometer at a crystal temperature of 293 K. |
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