TY  - JOUR
T1  - Effect of Space Radiation on LEO Nanosatellites
AU - Hillier, Caleb AU - Balyan, Vipin 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 18
SP  - 6843
EP  - 6857
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.6843.6857
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.6843.6857
KW  - MeV
KW  -LET
KW  -vulnerable
KW  -techniques
KW  -sensitive
KW  -majority
AB  - The study is focused on the orbital mission for ZACUBE 2. The space radiations causes single bit
errors. The protons and heavy ions are the main reason due to which they arises. The atmosphere for LEO is
simulated on OMERE Software and was tested on TRIM in presence of different shielding effects. For all
simulations involving shielding the thickness of 2 mm Al was used. It was proven that 2 mm Al is only effective
up to 20 MeV for protons shielding and 30 MeV for heavy ions shielding. It is also important to note that
various orbits and Al thickness do not affect the LET. This is important to know when trying to prevent and
predict single event effects. Using TRIM the observations made in the paragraph above were re-enforced.
Using this software a proton (positively charged hydrogen) was aimed and shot at 2 mm of aluminium. The
maximum energy that the 2 mm Al was able to stop was just over 19 MeV. As a final conclusion a 2 mm Al shield
is not able to block all the radiation that ZACUBE 2 will be exposed to, however, the majority of low energized
particles will be stopped. In order to ensure that SEE does not occur additional mitigation techniques are
needed to protect sensitive and vulnerable devices. These techniques could be Triple Modular Redundancy
(TMR), Software EDAC schemes and others.
ER  -