Measurement of hard X-Ray energy spectrum in Damavand Tokamak by bremsstrahlung spectrometer

The aim of this paper is to design and study the manufacturing feasibility of a Bremsstrahlung spectrometer for measuring hard X-ray emission spectrum of Damavand Tokamak. For this purpose, a set of lead filters with increasing cut-off energies and GR-200 thermoluminescence dosimeters were used. The matrix equation which describes the relation between energy spectrum of hard X-ray emission and absorbed dose in thermoluminescence dosimeters was extracted by applying superposition principle and the values of coefficient matrix are obtained by performing a simulation procedure using Monte Carlo N Particle (MCNP) code. Irradiation was performed using Damavand tokamak and the hard X-ray emission spectrum was measured by unfolding method. The results show that the proposed diagnostic tool can be used as a photon spectrometer for unfolding energy spectrum of hard X-ray radiation of Damavand tokamak at 100keV-2MeV energy range.