Speaker
Mr
Romain Gaior
(Chiba University)
Description
The Askaryan Radio Array is a neutrino radio detector array being
built at the south pole. It aims at the observation of cosmic ultra
high energy neutrino (E > 10PeV) via the coherent radio waves emitted
from the charge excess in the cascade induced after the interaction of
the neutrinos in ice. The radio signal expected by ARA rely mostly on
the simulation of the emission process, the Askaryan radiation, and
the detector response. In order to verify both of these aspects, we
set up a replica of ARA experiment, ARAcalTA, using the 40 MeV
electron beam of the Electron Light Source facility at Telescope Array
site. Electron bunches were shot in a block of ice to produce an
electromagnetic shower and the resulting radiation was collected with
ARA sensors. Parameters such as coherence, polarization ratio and
angular distribution were measured. The difficulty in this experiment
comes from the estimation of the possible background such as
transition radiation and the radiation from the beam appearance.
After describing the experimental setup and the presentation of the
main measurements, we will interpret our results in the light of the
simulation of the various emission process.
Primary author
Mr
Romain Gaior
(Chiba University)
Co-authors
Dr
Aya Ishihara
(Chiba University)
Dr
Bokkyun Shin
(Hanyang University)
Dr
Daisuke Ikeda
(ICRR)
Prof.
Gordon Thomson
(University of Utah)
Prof.
Hiroyuki Sagawa
(ICRR)
Prof.
John Matthews
(University of Utah)
Dr
Keiichi Mase
(Chiba University)
Prof.
Masaki Fukushima
(ICRR)
Dr
Matthew Relich
(Chiba University)
Prof.
Shigeru Yoshida
(Chiba University)
Mr
Shunsuke Ueyama
(Chiba University)
Dr
Tatsunobu Shibata
(ICRR)
