1.Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jalan Ganesa 10, Bandung 40132, Indonesia
2.Center for Nuclear Reactor Technology and Safety (PTKRN), Indonesia Nuclear Energy Agency (BATAN), Serpong Nuclear Area Puspiptek, Building No. 80 Serpong, Tangerang Selatan 15310, Indonesia
3.Center for Multipurpose Reactor (PRSG), Indonesia Nuclear Energy Agency (BATAN), Serpong Nuclear Area Puspiptek, Building No. 30 Serpong, Tangerang Selatan 15310, Indonesia
Corresponding author, email@example.com
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Anis Rohanda, Abdul Waris, Rizal Kurniadi, et al. Validation and improvement of gamma heating calculation methods for the G.A. Siwabessy multipurpose reactor. [J]. Nuclear Science and Techniques 31(11):112(2020)
Anis Rohanda, Abdul Waris, Rizal Kurniadi, et al. Validation and improvement of gamma heating calculation methods for the G.A. Siwabessy multipurpose reactor. [J]. Nuclear Science and Techniques 31(11):112(2020) DOI： 10.1007/s41365-020-00824-4.
Gamma heating, which is deposited in irradiated targets or samples, is an important issue in research reactors because it affects the safety of samples and the reactor operation. Gamma heating in the Reaktor Serba Guna G.A. Siwabessy (RSG GAS) can be measured or calculated using computer code. In this paper, we present the results obtained by using gamma calorimeters to measure the gamma heating in the central irradiation position in RSG GAS. The measurement results were verified and then compared with the calculation results obtained using the Gamset code. However, the accuracy of the calculation results obtained using Gamset was inadequate, with more than 20% error. Moreover, Gamset was initially created to calculate gamma heating in 35 MWth reactors and the RSG GAS reactor has an operating power level of 30 MWth. To address these issues, we developed a new program called NewGamset, built with an informative graphical user interface based display. NewGamset can employ new analytical approaches as it utilizes a calculation base that comprises 18 energy groups and can provide updated physical parameters of RSG GAS. The results of gamma heating measurements obtained using gamma calorimeters made of graphite, aluminum, iron, and zirconium were 2.20 ± 0.03 W/g, 2.25 ± 0.02 W/g, 2.58 ± 0.03 W/g, and 2.91 ± 0.10 W/g, respectively. In general, the calculation results were larger than the measurement results, and the average ratio of calculation to measurement result was 1.37 for Gamset and 1.02 for NewGamset. Hence, it can be concluded that NewGamset provides more accurate results than Gamset. We also report the gamma heating estimation for common elements irradiated in the RSG GAS silicide core, with an operating power level of 15 MWth and 30 MWth. We highly recommend that NewGamset be used for validating the gamma heating data of various target materials in RSG GAS.
Gamma heatingRSG GASCalorimeterNewGamset
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