The final value for the BB treshold is -0.15V. This viges a treshold cannel of about 250-300.
This value is effective since run 2974. Run 2967 had a treshold of -0.1V. All other runs are unreliable when it comes to BB.
The rate on BB is now 0.6MHz. I will update soon on the S/GB ratio for 12C(e,e'p_recoil).