Abstract
To promote R&D for accelerator-driven systems (ADS), the ADS Target Test Facility (TEF-T) is planned under the framework of the J-PARC project. Design of a proton beam window (BW) of a lead-bismuth eutectic (LBE) target is one of key issues for TEF-T construction. The objective of this study is to evaluate of structural integrity of the BW. That is, thermal-fluid behavior of LBE around the BW, structural integrity against thermal stress and internal pressure, and effects of cavitation bubbles generated by pressure waves due to pulsed proton beam injection were evaluated. As a result, the integrity of the BW for the thermal stress and the internal pressure was confirmed, and the candidate of the initial operation condition for the target system was suggested. Furthermore, it was confirmed that the cavitation bubbles would not cause meaningful damages on the target vessel.
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