10kV power supply for a Nier type ion source

This is a schematic for a 10kV power supply for a Nier type electron impact ion source. The power supply provides the following potentials:

1) Source HV (0-10kV)

2) Focus (0-10kV)

3) Delta Focus (+/- 0 - 500V around the focus potential)

4) Electron energy (0 - 120eV)

5) Ion repeller (-30 - +30V)

6) Trap voltage (+20 - +60V)