DIII-D Integrator Testing
Drift, Accuracy, and Reliability
The DIII-D National Fusion Facility (operated by the DOE and General Atomics) required low drift analogue integrators
to DIII-D, enabling automated analysis of quasi-stationary 3D perturbations through a plasma discharge. The quality of integrators they needed could cost upwards of $10,000 per device so they needed a cheap alternative.
The Solution
The Columbia Plasma Physics Lab was in possession of low-drift integrator prototypes made by Eagle Harbor Technologies. I formulated multiple test setups with advanced circuitry techniques for scenarios relevant to this diagnostic equipment. I carried out the tests, iterated on the test design, adjusted to the needs of the DIII-D team, and gave multiple reports on my results. I used advanced data analysis techniques to measure different types of accuracy, using over 1 billion data pts collected from my test.
Results
I successfully demonstrated that these prototype integrators were sufficiently accurate and low-drift. I directed two members of the lab in soldering and replacing parts in the integrators, before sending them to the DIII-D national facility for use. I effectively saved ~$30,000 of the DIII-D budget by providing these free alternatives.
Final Report Slide Deck