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arXiv 1702.00941physics.ins-det
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实验NEUTRINO-4寻找无菌中微子

Experiment NEUTRINO-4 Search for Sterile Neutrino

A. P. Serebrov, V. G. Ivochkin, R. M. Samoilov, A. K. Fomin, A. O. Polyushkin, V. G. Zinoviev, P. V. Neustroev, V. L. Golovtsov, A. V. Chernyj, O. M. Zherebtsov… 展开作者

A. P. Serebrov, V. G. Ivochkin, R. M. Samoilov, A. K. Fomin, A. O. Polyushkin, V. G. Zinoviev, P. V. Neustroev, V. L. Golovtsov, A. V. Chernyj, O. M. Zherebtsov, V. P. Martemyanov, V. G. Tarasenkov, V. I. Aleshin, A. L. Petelin, A. L. Izhutov, A. A. Tuzov, S. A. Sazontov, D. K. Ryazanov, M. O. Gromov, V. V. Afanasiev, M. E. Zaytsev, M. E. Chaikovskii

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6 pages, 5 figures
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摘要：

为了在可能存在的无菌中微子领域进行研究，建立了基于SM-3反应堆（Dimitrovgrad，俄罗斯）的实验室，以寻找反应堆反中微子的振荡。一个可移动的探测器，受到被动屏蔽的保护，不受外部辐射的影响，可以设置在距离反应堆堆芯6到12米的范围内。首次用可移动探测器在离反应堆堆芯如此近的距离上进行了反中微子通量的测量。测量的主要困难是由宇宙背景引起的，它严重降低了测量的精度。本文分析了小距离测量的结果，并结合长距离测量的结果，得到了无菌中微子的参数。

英文摘要：

In order to carry out research in the field of possible existence of a sterile neutrino the laboratory based on SM-3 reactor (Dimitrovgrad, Russia) was created to search for oscillations of reactor antineutrino. A moveable detector, protected with passive shielding from outer radiation, can be set at distance range 6 to 12 meters from the reactor core. Measurements of antineutrino flux at such short distances from the reactor core are carried out with moveable detector for the first time. The main difficulties of the measurements caused by cosmic background and it heavily decreases the precision of measurements. We present the analysis of measurements at small distances together with the data obtained in measurements at long distances in order to obtain parameters of sterile neutrino.

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