A set of PCB designs to drive a PMT-based scintillation detector.
Never got to finish it - the hardware is more or less done and largely tested, but failed to force myself to write the software/firmware.
- A PMT needs around -1000V to work.
- The logic stuff needs 5V.
- The amplifier needs +5V and -5V.
This is a little brick that produces all of the above from 12V, using off-the-shelf converters to get +-5V and isolated 12V, boosting the isolated 12V to 250V, and voltage multiplying the 250V to 1000V.
Takes the pulses from the PMT, amplifies and inverts them.
I think i replaced MCP6021 with OPA172, for voltage limit reasons.
An FPGA module with an ADC attached to it.
Takes the analog output of the amplifier, digitizes it, processes/detects peaks, and saves it on a microsd card.
The sync output is there to synchronize timings between several boards, i.e. for muon detection.
PMT boards, with amplifier mount point and resistor divider ladder.
Pinouts for common ФЭУ-85 and ФЭУ-35 PMT tubes, as well as a blank one intended for an already-populated PMT module.