如图，已知圆\(C\)与\(x\)轴相切于点\(T(1,0)\)，与\(y\)轴正半轴交于两点\(A\)，\(B(B\)在\(A\)的上方\()\)，且\(|AB|=2.\)则圆\(C\)在点\(B\)处的切线在\(x\)轴上的截距为________．