Performing the First Single Event Effect Tests Using the Metu Defocusing Beam Line in Turkey

Abstract

METU-Defocusing Beam Line (METU-DBL) project aims to perform Single Event Effect (SEE) tests for space, nuclear and other applications. Turkish Atomic Energy Authority (TAEA) has a cyclotron which can accelerate protons up to 30 MeV kinetic energy at the Proton Accelerator Facility (PAF) mainly for radioisotope production and for research and development (R&D) purposes. In the facility, the stable proton beam current is variable between 0.1 µA to 1.2 mA and the beam size is nearly 1 cm x 1 cm. METU-DBL pre-test setup, which has been installed in the R&D room, enlarges the beam size with two quadrupole magnets and it reduces the proton flux with a collimator. The pretest setup beam size is about 10 cm x 10 cm and the beam flux is 10 8 p/cm 2 /s. The first tests of electronic cards, detectors and also commercial and experimental solar cells have been performed using this setup. Also, the final configuration of METU-DBL is now under construction to provide a beam according to ESA ESCC No. 25100 standard. MCNP Monte Carlo codes were used for the calculations of secondary particles (neutrons, gammas) and residuals.

Radiation Testing of Commercial Rechargeable Lithium Polymer Batteries for Small Satellite Applications

“…METU-DBL was built by The Research and Application Center for Space Accelerator Technologies (IVMER), situated at METU. 23 The proton beamline is located inside the R&D room of the Turkey Energy, Nuclear and Mining Research Institute (TENMAK) facility. The beamline delivers 15-30 MeV selectable energy protons onto the testing table through a thin titanium window with a 15.40 × 21.55 cm 2 irradiation area with a flux of 10 6 − 10 10 protons/cm 2 /s and a 5% beam uniformity.…”

“…The beamline delivers 15-30 MeV selectable energy protons onto the testing table through a thin titanium window with a 15.40 × 21.55 cm 2 irradiation area with a flux of 10 6 − 10 10 protons/cm 2 /s and a 5% beam uniformity. 23 Simulation software Monte Carlo N-Particle Transport Code (MCNP) and FLUKA were used to calculate the dose for different irradiation sessions and to decide the optimal number of battery cells to be tested. [24][25][26] This was achieved by positioning the batteries at the center of the irradiation area, 5 cm from the titanium foil of the beamline at a 90°angle to the arriving protons.…”