A peer-reviewed journal published by K. N. Toosi University of Technology
A fast Jacobian-Free Newton-Krylov iterative solver for eigenvalue search problems in the reactor physics

Mohammadreza Abbasi

Volume 1, Issue 3 , August 2020, Pages 1-9


  ‎The Jacobian-Free Newton-Krylov (JFNK) method has been widely used in solving nonlinear equations arising in many applications‎. ‎In this paper‎, ‎the JFNK solver is examined as an alternative to the traditional power iteration method for calculation of the fundamental eigenmode ...  Read More

Optimization of beamline diameter in spot scanning proton therapy for minimization of secondary particles using finite element method

‎Amir Veiskarami; ‎Mahdi Sadeghi; ‎Dariush Sardari; ‎Shahryar Malekie

Volume 1, Issue 3 , August 2020, Pages 11-16


  ‎Collision of protons with background gas and beamline wall in proton therapy causes the creation of secondary particles‎, ‎e.g. neutrons‎, ‎which results in more difficulties in curing the tumors‎. ‎In the present simulation-based study‎, ‎the optimum diameter of ...  Read More

Flow regimes classification and prediction of volume fractions of the gas-oil-water three-phase flow using Adaptive Neuro-fuzzy Inference System

‎Gholam Hossein Roshani; ‎Alimohammad Karami; ‎Ehsan Nazemi; ‎Cesar Marques Salgado

Volume 1, Issue 3 , August 2020, Pages 17-26


  ‎The used metering technique in this study is based on the dual energy (Am-241 and Cs-137) gamma ray attenuation‎. ‎Two transmitted NaI detectors in the best orientation were used and four features were extracted and applied to the model‎. ‎This paper highlights the application of ...  Read More

A simulation study on neutronic behavior of non-fissionable and fissionable materials of different geometries as spallation targets in ADS

‎Mohammad Amin Amirkhani‎; ‎Mostafa Hassanzadeh; ‎Safar Ali Safari

Volume 1, Issue 3 , August 2020, Pages 29-36


  ‎Spallation process is the most significant process for neutron generation in industry and medicine‎. ‎This process has been used in the subcritical reactor core‎. ‎In this research‎, ‎we study the neutronic behavior of non-fissionable and fissionable spallation targets consists ...  Read More

An analytical and Monte Carlo investigation of the sufficiency of the present shielding of PET/CT imaging system at Tehran's Shariati hospital‎

‎Fereshteh Gholami; ‎Ehsan Alibeigi; ‎Mojtaba Shamsaei-Zafarghandi; ‎Ehsan Nazemi

Volume 1, Issue 3 , August 2020, Pages 37-41


  ‎By the rapid development of imaging systems such as PET/CT for diagnosis of cancer‎, ‎the protection of staff and public has become a main health concern‎. ‎Due to serious and irreversible harms of ionization radiations‎, ‎protection of all those who are exposed is the main ...  Read More

ThO2 spent fuel assembly’s gamma dose rate dependency to burnup and cooling time

Zohreh Gholamzadeh; Mohadeseh Gholshanian; Seyed Mohammad Mirvakili

Volume 1, Issue 3 , August 2020, Pages 43-48


  Today thorium based fuels are being investigated as an alternative fuel technology. However, the majority of thorium fuel research studies are limited to reactor physics investigations, which leaves a gap for dose evaluation and shielding concerns of such spent fuels. The present work investigates thorium ...  Read More