4.
已知圆\(C\):\((x+1)^{2}+y^{2}=16\),点\(F(1,0)\),\(P\)是圆上一动点,点\(E\)在线段\(FP\)上,点\(Q\)在半径\(CP\)上,且满足\( \overrightarrow{FP}=2 \overrightarrow{EP}, \overrightarrow{EQ}\cdot \overrightarrow{FP}=0\).
\((1)\)当\(P\)在圆上运动时,求点\(Q\)的轨迹\(Γ\)的方程;
\((2)\)设过点\(A(2,0)\)的直线\(l\)与轨迹\(Γ\)交于点\(B(B\)不在\(x\)轴上\()\),垂直于\(l\)的直线交\(l\)于点\(M\),与\(y\)轴交于点\(H\),若\( \overrightarrow{FB}\cdot \overrightarrow{FH}=0\),求点\(M\)横坐标的取值范围.