Kavli Affiliate: Paolo Privitera
| First 5 Authors: Fraser Bradfield, Justin Albury, Jose Bellido, Ladislav Chytka, John Farmer
| Summary:
The Fluorescence detector Array of Single-pixel Telescopes (FAST) is one of
several proposed designs for a next-generation cosmic-ray detector. Such
detectors will require enormous collecting areas whilst also needing to remain
cost-efficient. To meet these demands, the FAST collaboration has designed a
simplified, low-cost fluorescence telescope consisting of only four
photomultiplier tubes (PMTs). Since standard air shower reconstruction
techniques cannot be used with so few PMTs, FAST utilises an alternative
two-step approach. In the first step, a neural network is used to provide a
first estimate of the true shower parameters. This estimate is then used as the
initial guess in a minimisation procedure where the measured PMT traces are
compared to simulated ones, and the best-fit shower parameters are found. A
detailed explanation of these steps is given, with the expected performance of
FAST prototypes at the Telescope Array experiment acting as a demonstration of
the technique.
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