Txheej S≤1㎡ 1 ㎡ 3 ㎡ 5 ㎡ 10 ㎡ 30 ㎡ 50 ㎡ 100 ㎡ 300㎡<S 2 Txheej 4 7 7 8 8 9 10 12 RFQ 4 Txheej 5 8 8 9 9 10 11 13 6 Txheej 6 9 9 10 10 11 12 14 8 Txheej 7 10 10 11 11 12 13 15 10 Txheej 8 11 11 12 12 13 14 16 12 Txheej 9 12 12 13 13 14 15 17 ≧14 Layers RFQ