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