Parametric tests and measurements after shimming of a beryllium reflector in a miniature neutron source reactor (MNSR) |
| |
| Affiliation: | 1. Politecnico di Milano – Department of Energy, CeSNEF (Enrico Fermi Center for Nuclear Studies), via La Masa 34, 20156 Milano, Italy;2. University of Milano-Bicocca, Physics Department “G. Occhialini” and INFN Section, Piazza dell’Ateneo Nuovo, 20126 Milan, Italy;3. University of Pavia, Applied Nuclear Energy Laboratory (L.E.N.A.), Via Gaspare Aselli 41, 27100 Pavia, Italy;1. Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom;2. Rhode Island Nuclear Science Centre, 16 Reactor Rd, Narragansett, RI 02882, USA;3. Department of Physics and Astronomy, Uppsala University, Sweden;4. Department of Nuclear Engineering, Missouri S&T, USA;1. Wood, Dorchester, UK;2. Hitachi Europe, London, UK |
| |
| Abstract: | After 10 years operation of Pakistan research reactor-2 (PARR-2), a miniature neutron source reactor (MNSR), a beryllium reflector was added to compensate the loss of reactivity due to burn up of fuel. Beryllium shim plates have been placed at the top of the core in a tray provided for this purpose. The control rod was dismantled and withdrawn from the core and the reactor was made subcritical with cadmium shimming. To monitor the neutron population during this experiment, two additional neutron monitoring channels based on BF3 were installed around the core. Measurement of important Parameters such as effective delayed neutron fraction, decay constant, excess reactivity, control rod worth, temperature coefficient of reactivity, thermal neutron flux, cadmium ratio was done after the addition of Be reflector. Increase in reactivity worth due to addition of Be shim was 1.0 mk. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
