An ultra stable voltage source for precision Penning trap experiments
An ultra stable and low noise 25 channel voltage source providing 0 to 100 V has been developed. It will supply stable bias potentials for Penning trap electrodes used in high precision experiments. The voltage source generates all its supply voltages via a specially designed transformer. Each channel can be operated either in a precision mode or can be dynamically ramped. A reference module provides reference voltages for all the channels, each of which includes a low noise amplifier to gain a factor of 10 in the output stage. A relative voltage stability of dV/V2x10 8 has been demonstrated at 89 V within about 10 min.