Erika Kido (Author), R. U. Abbasi (Author), T. Abu-Zayyad (Author), M. Allen (Author), Yasuhiko Arai (Author), R. Arimura (Author), E. Barcikowski (Author), J. W. Belz (Author), D. R. Bergman (Author), J. P. Lundquist (Author)

Abstract

Telescope Array (TA) is the largest ultrahigh energy cosmic-ray (UHECR) observatory in the Northern Hemisphere. A surface detector (SD) array covers approximately 700 km^2, and the SD array is surrounded by three fluorescence detector (FD) stations. TA has found evidence for a cluster of cosmic rays with energies greater than 57 EeV from the TA SD data. In order to confirm this evidence with more data, we started the TAx4 experiment which expands the detection area using new SDs and FDs. We started construction of new SDs which are arranged in a square grid with 2.08 km spacing at the north east and south east of the TA SD array. More than half of the new SDs are already deployed and running. We present the current status of the TAx4 SD, trigger efficiency and exposure prospects for the highest energy part of the cosmic ray spectrum.

Keywords

Telescope Array;TAx4;indirect detection;hybrid detection;ground array;surface detection,;ultra-high energy;cosmic rays;energy spectrum;

Data

Language: English
Year of publishing:
Typology: 1.06 - Published Scientific Conference Contribution (invited lecture)
Organization: UNG - University of Nova Gorica
UDC: 539.1
COBISS: 167055875 Link will open in a new window
ISSN: 1824-8039
Views: 42
Downloads: 0
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Other data

Type (COBISS): Not categorized
Pages: str. 1-7
Chronology: 2022
DOI: 10.22323/1.395.0203
ID: 20033976