  Hollow plasma has been introduced into the proton-driven plasma wakefield
accelerators to overcome the issue of beam quality degradation caused by the
nonlinear transverse wakefields varying in radius and time in uniform plasma.
It has been demonstrated in simulations that the electrons can be accelerated
to energy frontier with well-preserved beam quality in a long hollow plasma
channel. However, this scheme imposes tight requirements on the beam-channel
alignment. Otherwise asymmetric transverse wakefields along the axis are
induced, which could distort the driving bunch and deteriorate the witness beam
quality. In this paper, by means of the 2D cartesian particle-in-cell
simulations, we examine the potentially detrimental effects induced by the
driving beam-channel offset and initial driver tilt, and then propose and
assess the solutions to these driver inaccuracy issues.
