[2L08-12] トリチウム工学

[2L11] Tritium distribution in Be limiter tiles used in JET ITER-like wall experiments

*Sun Eui Lee¹, Yuji Hatano¹, Yasuhisa Oya², Suguru Masuzaki³, Masayuki Tokitani³, Mitsutaka Miyamoto⁴, Nobuyuki Asakura⁵, Hirofumi Nakamura⁵, Yasunori Iwai⁵, Takumi Hayashi⁵ (1. Univ. of Toyama, 2. Shizuoka Univ., 3. NIFS, 4. Shimane University, 5. QST)

キーワード：JET-ILW, DT fusion reaction, DD fusion reaction, high energy triton, co-deposition, thermal energy desorption

Tritium (T) distributions in Be limiter tiles used in 1st, 3rd or 1st-3rd JET ITER-like wall experimental campaign were examined. Outer poloidal limiter showed the highest T content and it increased with increasing plasma exposure time. On the other hand, T content in the upper or inner limiters were low and showed no systematic correlation with plasma exposure time. These results indicated that the inner and upper tiles were more affected by heat load from the plasma.