The GA PEAcH: Measuring Beam Current at High Voltage

In collaboration with the University of North Georgia, we

are constructing a portable electrostatic ion accelerator

at Georgia College. As the target chamber and beam dump

will be at high voltage, a battery powered beam current integrator

and calibration current source are being developed. The BCI utilizes

an SPA100 source picoammeter which will be read out by a Raspberry Pi

using custom code. The calibration source will produce currents from

50 nA to 10 μA using 5V from a USB output, resister chains,

and a selector switch.