I'm designing a base for a photomultiplier tube using a recycled HV power supply. The power supply is an EMCO C12. The base has a 14 pin socket (to connect to the PMT), the EMCO C12, a DAC to program the EMCO C12, a 5 pin ZH connector (DAC), a 2 pin PH connector (DC in), and a BNC connector (Signal). Below is a schematic.
My problem is that the gain of the PMT is simply not enough at the max voltage of the EMCO C12. If I could boost the voltage up just 250V then I could increase the gain almost 4 fold.
It's very important that the method used to boost the voltage maintains a very stable voltage output and be able to output . Also, it needs to introduce as little noise as possible to the output signal.