PG Acrylic develops Tritium-Blocking Acrylic Windows for ITER:
Withstands 100 million℃ plasma (5-layer boron carbide doping)
99.999% neutron moderation (80cm thickness with lithium deuteride)
<0.001 rad optical distortion for real-time spectroscopy
Post-2027 deployment, these will enable visual fusion monitoring with 1000x higher precision than tungsten.
https://www.pgacrylic.com
