Physics basis for the ICRF system of the SPARC tokamak
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'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||, 3He concentration, resonance location, antenna poloidal location and losses on alpha particles and ash have been studied. The antenna loading has been assessed by comparing to the Alcator C-Mod antennas. Antenna spectrum k|| ~ 15-18 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 ~10o to be perpendicular to the B field and the straps can run with different power ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["ICRF","ICR heating","Physics","SPARC","tokamak"]} <|eot_id|>
 Here is the Description of a dataset. Description:'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||, 3He concentration, resonance location, antenna poloidal location and losses on alpha particles and ash have been studied. The antenna loading has been assessed by comparing to the Alcator C-Mod antennas. Antenna spectrum k|| ~ 15-18 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 ~10o to be perpendicular to the B field and the straps can run with different power ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
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||, 3He concentration, resonance location, antenna poloidal location and losses on alpha particles and ash have been studied. The antenna loading has been assessed by comparing to the Alcator C-Mod antennas. Antenna spectrum k|| ~ 15-18 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 ~10o to be perpendicular to the B field and the straps can run with different power 
ICRF; ICR heating; Physics; SPARC; tokamak