In situ testing of EHT integrators on a tokamak

Eagle Harbor Technologies (EHT), Inc. has developed three integrators for magnetic diagnostics used within the fusion science and plasma physics communities. The EHT Short Pulse Integrator is an ultra-stable, high frequency, analog differential integrator designed to operate for periods ranging from sub-microsecond to tens of seconds. The EHT Long Pulse Integrator exceeds the ITER specification for integration error and pulse duration (3600 s). The EHT High Dynamic Range Integrator utilizes the technology developed for the Long Pulse Integrator to increase the dynamic range of the Short Pulse Integrator and user DAQ, which allows for an increased bit-depth and higher resolution for short pulse experiments (up to tens of seconds). Here we present bench testing results, as well as testing at a validation platform experiment (HIT) and a tokamak (DIII-D).