Horizontal beam parallel to staff

[Ahanu Banerjee]

I know it is not standard practice, but I am looking for a way to make
beams parallel to staff despite the noteheads on either side of the beam
having different vertical positions on the staff.

Setting beam damping to a high value reduces the slope substantially, but
it doesn't go to zero. Can someone suggest a way to do this?

\version "2.20.0"
{ \override Beam.damping = #5
  g''8 b b c'' c'' b b g'' }


Thanks,
-Ahanu