  Tungsten is used as plasma-facing wall in ITER where it is subjected to
extreme operating conditions. In this work, we study the damage formation in
[111] crystalline W by neutron bombardment in the temperature range of 300-900
K which is important for designing next generation of fusion reactors. The
Molecular Dynamics (MD) simulations are performed at a primary knock-on atoms
(PKA) energy of 1 keV within the Gaussian Approximation Potential (GAP)
framework. The analysis of the induced damage is done by the Fingerprinting and
Visualization Analyzer of Defects (FaVAD) which is based on a rotation
invariant mapping of the local atomic neighborhoods allowing to extract, to
identify and to visualize the atomic defect formation dynamically during and
after the collision cascades. The evaluation allows to classify the various
defect types and to quantify the defect evolution as function of time and
initial sample temperature. We found that the production of Frenkel pair
increases as a function of the temperature due to thermal activated mechanisms.
