EUSO-TA ground based fluorescence detector: analysis of the detected events

Bisconti, Francesca; Belz, J. W.; Bertaina, M.; Blin-Bondil, S.; Capel, Francesca; Casolino, M.; Ebisuzaki, T.; Eser, Johannes; Gorodetzky, P.; Matthews, J. N.; Parizot, E.; Piotrowski, L. W.; Plebaniak, Z.; Prévôt, G.; Putiš, M.; Sagawa, H.; Sakaki, N.; Shin, Han-Back; Shinozaki, K.; Sokolsky, P.; Takizawa, Y.; Tameda, Y.; Thomson, G. B.

doi:10.22323/1.358.0197

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…In the case of one event only, the signal is clearly visible in two frames. More detailed analysis of detected events can be found in [8]. EUSO-TA usually observes a very late stage of the EAS development.…”

Section: Detection Of Crsmentioning

confidence: 99%

The EUSO-TA ground-based detector: results and perspectives

Plebaniak¹

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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EUSO-TA is a ground-based telescope installed in 2013 in the Black Rock Mesa Telescope Array (BRM-TA) site, operating with 2.5 𝜇s time resolution to observe the night sky in the UV range. The optical system contains two 1 m 2 Fresnel lenses providing to the telescope a field of view of 11 • × 11 • . Signals are focused on the Photo Detector Module (PDM), with the focal surface composed of 36 Hamamatsu Multi-Anode PhotoMultiplier Tubes (MAPMTs), with 64 pixels/anodes each. The telescope is housed in a shed in front of the BRM-TA fluorescence detectors, and it is viewing towards azimuth ∼ 307 • . The main aim of the experiment is to validate the design of the JEM-EUSO detectors and firmware with the final goal of observing ultra-high-energy cosmic rays (UHECRs) from space. Since the first installation of the EUSO-TA detector, 9 UHECR events have been detected and confirmed by comparison with TA observations. The night-sky UV background in different conditions, signals from stars and meteors have been measured, and anthropogenic signals, such as calibration lasers or planes. In 2019 an upgrade of the detector to a EUSO-TA2 version began, with a Covid brake till 2022. The new configuration will allow for more frequent and specialized observations. In this work, we present the status and perspectives of the EUSO-TA experiment, including a discussion of recently obtained results.

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Section: Detection Of Crsmentioning

confidence: 99%

The EUSO-TA ground-based detector: results and perspectives

Plebaniak¹

2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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“…The detector is also being calibrated using stars in the FoV, as discussed in [11]. These observations provide important data to optimise the detector technology in view of the upcoming space-based missions and to determine the sensitivity of the experiment (see [10]). The future upgrades of the detector include a new acquisition system based on Zynq board and the implementation of a self-triggering system.…”

Section: The Ground-based Telescope Euso-tamentioning

confidence: 99%

An overview of the JEM-EUSO program and results

Bertaina¹

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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“…By this, TA will cover five orders of magnitude in energy, reaching from about the knee to the cut-off in the energy spectrum. Finally, TA remains an excellent site for the test and crosscalibration of new detector systems [102,103,104].…”

Section: New Projects and Upgradesmentioning

confidence: 99%

News from Cosmic Ray Air Showers (ICRC 2019 -- Cosmic Ray Indirect Rapport)

Schröder¹

2019

Preprint

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This rapport summarizes the cosmic-ray indirect (CRI) session of the 36 th ICRC conference. Updated measurements from several air-shower arrays with higher precision were shown leading to the discovery of new features in the energy spectrum: HAWC measures a softening of the light component (p+He) around 10 13.5 eV; measurements of the Pierre Auger Observatory show that the second knee is a smooth feature extending at least over the range of 100 − 200 PeV and that the energy spectrum between the ankle and the cut-off cannot be described by a simple broken power law. Measurements of the mass composition confirm that the composition is a varying mixture of protons and nuclei at least up to several 10 EeV. Hadronic interaction models constitute a significant uncertainty in the interpretation of measurements, but a joint effort of several collaborations helps to better assess their deficiencies, e.g., by quantifying the muon deficit in the models over the shower energy. Still, general trends in the average mass composition over energy are consistent for all state-of-the-art models. Anisotropy measurements with higher precision generally confirm earlier results, too. A change of the amplitude and phase of the equatorial dipole provides another indication that in the energy range between the second knee and the ankle there likely is a transition from Galactic to extragalactic sources. However, neither the most energetic Galatic nor the extragalactic sources have been discovered, yet, which remains a primary science goal of the field. Next to more exposure, an increase of measurement accuracy and decrease of systematic uncertainties will provide future progress. Therefore, it is particularly exciting that new experiments are built and existing experiments upgraded to increase the accuracy for the measurement of the energy and mass composition, e.g., by combining radio antennas with particle detectors. Last but not least, there is a trend that experiments are designed such that they can target cosmic rays, photons, and neutrinos at the same time, which will facilitate multi-messenger astrophysics at the highest energies.

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EUSO-TA ground based fluorescence detector: analysis of the detected events

Cited by 5 publications

References 8 publications

The EUSO-TA ground-based detector: results and perspectives

The EUSO-TA ground-based detector: results and perspectives

An overview of the JEM-EUSO program and results

News from Cosmic Ray Air Showers (ICRC 2019 -- Cosmic Ray Indirect Rapport)

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