Kavli Affiliate: Steffen Luitz
| First 5 Authors: Tom Shutt, Bahrudin Trbalic, Aldo Pena-Perez, Steffen Luitz, Mark Convery
| Summary:
We report on the development of a novel pixel charge readout system, Grid
Activated Multi-scale pixel readout (GAMPix), which is under development for
use in the GammaTPC gamma ray instrument concept. GammaTPC is being developed
to optimize the use of liquid argon time projection chamber technology for
gamma ray astrophysics, for which a fine grained low power charge readout is
essential. GAMPix uses a new architecture with coarse and fine scale
instrumented electrodes to solve the twin problems of loss of measured charge
after diffusion, and high readout power. Fundamentally, it enables low noise
and ultra low power charge readout at the spatial scale limited by diffusion in
a time projection chamber, and has other possibly applications, including
future DUNE modules.
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