Kernel Flux — design, assembly, and validation
Sensor assembly, calibration, and CAD fixtures for Kernel Flux's 432-channel array.
What
Kernel Flux was a whole-head MEG system built from 432 optically pumped magnetometers. I worked on its development from early sensors to the integrated helmet.
Why it mattered
Each sensor needed to be assembled consistently and evaluated before it became part of the array. Measurements from the instrument helped us make changes to the hardware and assembly process.
My role
Hand-assembled and calibrated sensors, designed CAD fixtures, and worked with physicists and engineers on manufacturing. I also tested the integrated system, often using my own recordings to check for an alpha rhythm.
Outcome
Co-author on the SPIE 2021 paper describing the completed Flux system. Kernel later discontinued the product.
Assets
paper
Paper, SPIE 2021 — Kernel Flux: a whole-head 432-magnetometer OP-MEG system for brain activity imaging during natural human experiences
2021-03-05
Pratt et al. (38 authors including G. Sundar), "Kernel Flux: a whole-head 432-magnetometer optically-pumped magnetoencephalography (OP-MEG) system for brain activity imaging during natural human experiences," Proc. SPIE 11700, Optical and Quantum Sensing and Precision Metrology, 1170032 (2021). DOI 10.1117/12.2581794.
image
Guhan wearing the Kernel Flux OPM-MEG helmet
2020