== TOF meeting 2019-09-17

Present:  M. El-Batanouny, George, Siwei, Mike K.

Reviewed both systems.

=== Regular Helium Scattering

Custom electronics needed:

* TOF box
* Preamp / discriminator for MCP (multi-channel plate) pulse input
* 3A floating constant-current supply for e-gun filament
* Low Voltage "pulser" (mixer)

Off-the-shelf electronics:

* 0 to 400V supply
* 0 to -25V supply
* 0 to 20V supply

The Filament supply and LV pulser should be fairly close to the e-gun feedthrough.

The Preamp may need to be near the MCP electronics depending on signal levels

=== Metastable Helium Experiment

Custom electronics needed:

* TOF box (only pulse output used)
* Exciter power supply (can be same as e-gun filament supply?)
* HV pulser

Off-the-shelf electronics:

* -200V supply (could be the 0-400V from regular experiment)
* Solenoid power supply

=== Homework

* find the LV pulser schematic
* signal characteristics of the MCP output