Calorimetric System for Determination of Activity of a Neutrino Source Based on 51Cr
Within the framework of the BEST experiment project, a calorimetric system was developed to measure the activity of high-intensity (several MCi) neutrino sources based on 51Cr. In the range of thermal capacities of 250–520 W, the uncertainty of the heat release measurement is less than 0.25%. Taking into account the uncertainty of the energy release value for the 51Cr decay (0.23%), the activity of the neutrino source can be determined with an accuracy of ∼0.5%.
The reported study was funded by RFBR according to the research project no. 16-02-00800.
- 6.S. Gariazzo, C. Giunti, M. Laveder, Y. F. Li, and E. M. Zavanin, “Light sterile neutrinos,” J. Phys. G 43, 033001 (2016); arXiv:1507.08204.Google Scholar
- 7.V. N. Gavrin, V. V. Gorbachev, E. P. Veretenkin, and B. T. Cleveland, Gallium experiments with artificial neutrino sources as a tool for investigation of transition to sterile states, arXiv:1006.2103 (2010).Google Scholar
- 10.V. P. Chechev and N. K. Kuzmenko, Table de radionucléides 51 Cr, Vol. 1 (BIPM, 2004).Google Scholar