A development of an algorithm for Hp(10) TLD-900 BARC dose evaluation using response matrix

Abstract

Radiation dose monitoring using individual TLD dosimeters plays an essential role in controlling radiation exposure received by radiation workers. TLD dose evaluation can be done by algorithm method. This study aimed to develop a Hp(10) dose evaluation algorithm on TLD, using the curve fitting method, linear combination of response matrix, and direct element reading. The Hp (10) dose evaluation algorithm developed in this study then be tested in terms of the criteria standard. There were three segments in the Hp(10) dose evaluation algorithm: low energy (40 – 100 kV) with a linear combination response matrix method, 150 kV with a correction factor plot between r12 to R23, and energy above 200 kV. The algorithm gave good results in a range of low, medium, and high energy photon sources. At the same time, the linear combination method obtained C1 as much as 0.475 and 0.072 for C2. The Hp(10) equivalent dose evaluation algorithm met the standard trumpet curve recommended by the IAEA and plots of bias against standard deviation and tolerance of satisfaction on the ANSI standard. Intercomparison were carried out to test the readiness of the algorithm's competence against the BARC and Pradhan algorithms and produced excellent results.