HV testing without the cover continued today. With the EINZEL lens at 30kV the target module was able to achieve 58.7kV. At this voltage any spark was reeking havoc on the electronics of the TCS. Vacuum gauges signals were occasionally lost, the thermocouple reading would occasionally be lost, turbo pump would turn off. All of these events caused the interlocks to trip resulting in the power supplies to be turned off. As a result I bypassed majority of the interlocks to prevent this from happening. Ultimately as spark took out the CANBUS controller first for the EINZEL lens and then for the BIAS. David Morris has been contacted to have them replaced. The damage of the CANBUS controller for these power supplies is becoming a common problem and should be investigated for if there is a better solution. During testing I experimented with raising the BIAS to near its limit followed by the EINZEL lens and vise versa. From this it was determined that the EINZEL must be raised to high voltage before the BIAS otherwise sparking occurs. Even a step from 0 to 500 volts on the ENIZEL lens with the BIAS at 55kV caused sparking. There are a few combinations of testing along this line I would like to continue with but initially my though is that the BIAS and ENIZEL do not have sufficient clearance for the BIAS to operate above 55kV. Attached is a screen shot of the strip tool and the data. I have not heard from David yet but I do not expect the TCS to be operational today.