【PRESS RELEASE】Why Does Titanium Alloy Beam Window Become Brittle After Proton Beam Exposure? ~ Research and Development on the Accelerator Target and Beam Window Materials by RaDIATE International Collaboration ~
・A high-strength titanium alloy Ti-6Al-4V is widely employed as the “beam window” at high-intensity proton accelerator facilities, such as FNAL and J-PARC. However, this alloy suffers from radiation-induced hardening and loss of ductility after proton beam exposure. It is urgent to clarify the source of this degradation in mechanical properties to achieve stable high-intensity beam operations at these facilities,
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