icrf heating
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2020 ◽  
Vol 96 (2) ◽  
pp. 025603
Author(s):  
Chengyi Song ◽  
Lan Yin ◽  
Cheng Yang ◽  
Xueyu Gong ◽  
Pingwei Zheng ◽  
...  

2020 ◽  
Vol 86 (5) ◽  
Author(s):  
Y. Lin ◽  
J. C. Wright ◽  
S. J. Wukitch

Ion cyclotron range of frequencies (ICRF) heating will be the sole auxiliary heating method on SPARC for both full-field (Bt0 ~ 12 T) D–T operation and reduced field (Bt0 ~ 8 T) D–D operation. Using the fast wave at ~120 MHz, good wave penetration and strong single-pass absorption is expected for D–T(3He), D(3He), D(H) and 4He(H) heating scenarios. The dependences of wave absorption on ${k_\parallel }$ , 3He concentration, resonance location, antenna poloidal location and losses on alpha particles and ash have been studied. The antenna loading has been assessed by comparison with the Alcator C-Mod antennae. An antenna spectrum of ${k_\parallel }\sim 15\text{--}18\,{\textrm{m}^{ - 1}}$ is shown to be good for both core absorption and edge coupling. For the control of impurity sources, the antenna straps are rotated ~10° to be perpendicular to the B field and the straps can run with different power levels in order to optimize the antenna spectrum and to minimize the image current on the antenna frame. Combining the physics constraints with the SPARC port design, maintenance requirement and contingency against antenna failure during D–T operation, we plan to mount on the inner wall of the vacuum vessel a total of 12 4-strap antennae in 6 ports while keeping 3-strap antennae that are insertable and removable on port plugs as the backup option.


2020 ◽  
Vol 15 (0) ◽  
pp. 2402015-2402015
Author(s):  
Kenji SAITO ◽  
Ryosuke SEKI ◽  
Shuji KAMIO ◽  
Hiroshi KASAHARA ◽  
Tetsuo SEKI

2019 ◽  
Vol 22 (2) ◽  
pp. 025101
Author(s):  
Zhen ZHENG ◽  
Nong XIANG ◽  
Cheng YANG ◽  
Yingfeng XU
Keyword(s):  

2019 ◽  
Vol 146 ◽  
pp. 256-260
Author(s):  
K. Saito ◽  
S.J. Wang ◽  
H.H. Wi ◽  
H.J. Kim ◽  
S. Kamio ◽  
...  

2019 ◽  
Vol 14 (0) ◽  
pp. 2402055-2402055 ◽  
Author(s):  
Mafumi HIRATA ◽  
Junpei ITAGAKI ◽  
Ryuya IKEZOE ◽  
Makoto ICHIMURA ◽  
Shuhei SUMIDA ◽  
...  
Keyword(s):  

2019 ◽  
Vol 14 (0) ◽  
pp. 2401028-2401028
Author(s):  
Atsuto TANAKA ◽  
Makoto ICHIMURA ◽  
Mafumi HIRATA ◽  
Ryuya IKEZOE ◽  
Shuhei SUMIDA ◽  
...  

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