RadialStripDetector: fix typos and also interpolate on backside

    auto check_position = outside;

    check_position.SetZ(inside.z());

    if(outside.z() > 0 && isWithinSensor(check_position)) {

        // Carrier left sensor on the side of the sensor, interpolate end point on surface

    if(std::fabs(outside.z()) > getSensorSize().z() / 2.0 && isWithinSensor(check_position)) {

        // Carrier left sensor on the top or bottom surface of the sensor, interpolate end point on surface

        auto z_cur_border = std::fabs(outside.z() - getSensorSize().z() / 2.0);

        auto z_last_border = std::fabs(getSensorSize().z() / 2.0 - inside.z());

        auto z_total = z_cur_border + z_last_border;

        return (z_last_border / z_total) * static_cast<ROOT::Math::XYZVector>(outside) + (z_cur_border / z_total) * inside;

    } else {

        // Carrier left sensor on any order border, use last position inside instead

        // Carrier left sensor on any other border, use last position inside instead

        return inside;

    }

}