Optimization of the detection system for ¹⁶N registration along with coolant leaks in the WWER-1000 steam generator

• Дата: 2013
• Автори: Rudychev, V.G., Rudychev, Y.V., Azarenkov, N.A., Bondar, A.Y.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2013
• Назва видання: Вопросы атомной науки и техники
• Теми: Ядернo-физические методы и обработка данных
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/111838
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Optimization of the detection system for ¹⁶N registration along with coolant leaks in the WWER-1000 steam generator / V.G. Rudychev, Y.V. Rudychev, N.A. Azarenkov, A.Y. Bondar // Вопросы атомной науки и техники. — 2013. — № 3. — С. 259-267. — Бібліогр.: 16 назв. — англ.

One of the methods of control of steam generator coolant flow from the primary circuit to the 2nd circuit is a measurement of the isotope ¹⁶N activity. Aim of this work is the optimizing of characteristics and placements of NaI(Tl) detectors. Radiation transport from steam-line volume to the detector by Monte-Carlo method is simulated using MCNP and PENELOPE packages. The special procedure, which can decrease a simulation time due to increasing numbers of "virtual detectors" arranged around steam-line irradiation source, is developed. Influence of the NaI detector thickness to the amount of absorbed photons, which ones characterized ¹⁶N evidence, co-called response function is investigated. Different variants of cylindrical detectors with constant volume, which have various diameter to the hight ratios is investigated. Arrangement of ones around steam-line irradiation source is optimized.