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PRODID:UW-Madison-Physics-Events
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SEQUENCE:2
UID:UW-Physics-Event-6391
DTSTART:20210401T210000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T234208Z
LAST-MODIFIED:20210317T152803Z
LOCATION:https://uwmadison.zoom.us/j/95938566630?pwd=MEdVRFVXYTcxc1lKb
 WtXLzlhQ1BwUT09
SUMMARY:Exploring the Use of Signal Envelopes for Neutrino Detection w
 ith In-Ice Radio Arrays\, Thesis Defense\, Benjamin Hokanson-Fasig\, P
 hysics PhD Graduate Student
DESCRIPTION:Neutrinos are unique cosmic messengers that can be used to
  probe the universe for sources of ultra-high energy cosmic rays. In o
 rder to detect the highest energy neutrinos\, which are expected to in
 teract very rarely\, a large detector volume is necessary. The Askarya
 n Radio Array (ARA) and similar neutrino detectors use the Antarctic i
 ce as their detector volume\, searching for radio signals from neutrin
 o-induced particle showers in the ice. This detection technique result
 s in radio neutrino detectors that are highly sensitive to neutrinos w
 ith energies above 10 PeV.
\n
\nThis thesis explores the possibility o
 f using envelopes of the voltage signals from antennas in ARA to perfo
 rm neutrino searches. A detector making use of signal envelopes could 
 have a significantly lower power consumption\, making it an attractive
  option in power-limited regions like Antarctica. By reproducing the r
 econstruction method used in previous ARA analyses\, a reconstruction 
 using signal envelopes is shown to be able to reconstruct the location
  of a neutrino event in the ice with an error of 1--2 degrees. However
 \, since the ARA stations are not optimized for this method\, the use 
 of signal envelopes for a complete analysis of ARA data is ultimately 
 found to be unrealistic. In the absence of a direct comparison between
  the previous ARA analysis and a signal-envelope analysis\, further ap
 plications of the signal envelope are proposed\, including detector ge
 ometries that are more optimized for envelope analysis as well as opti
 ons for using signal envelopes to lower the trigger threshold of radio
  neutrino detectors.
URL:https://www.physics.wisc.edu/events/?id=6391
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