Commissioning, Calibration, and Performance of the Cherenkov Telescope on EUSO-SPB2

Matamala, Oscar F Romero

doi:10.22323/1.444.1041

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…The FoV of the instrument is 6.4 • in zenith and 12.8 • in azimuth and can be pointed during the flight from horizontal to 10 • below the Earth's limb depending on the targeted science. A more in-depth discussion of the instrument can be found in [11,12].…”

Section: The Cherenkov Telescope (Ct)mentioning

confidence: 99%

Overview and First Results of EUSO-SPB2

Eser,

Olinto,

Wiencke

2023

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

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Observing ultra-high energy cosmic rays (UHECR) and very high energy (VHE) neutrinos from space is a promising way to measure their extremely low fluxes by significantly increasing the observed volume. The Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2), the next, most advanced pathfinder for such a mission, was launched May 13th 2023 from Wanaka New Zealand. The pioneering EUSO-SPB2 payload flew a Fluorescence Telescope (FT) with a PMT camera pointed in nadir to record fluorescence light from cosmic ray extensive air shower (EAS) with energies above 1 EeV, and a Cherenkov telescope (CT) with a silicon photomultiplier focal surface for observing Cherenkov emission of cosmic ray EAS with energies above 1 PeV with an above-the-limb geometry and of PeV-scale EAS initiated by neutrinosourced tau decay. As the CT is a novel instrument, optical background measurements for space neutrino observation are an important goal of the mission. Any data collected during the mission will influence and improve the development of a space-based multi-messenger observatory such as the Probe of Extreme Multi-Messenger Astrophysics (POEMMA). We present an overview of the EUSO-SPB2 mission and its science goals and summarize results as available, from the 2023 flight.

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Section: The Cherenkov Telescope (Ct)mentioning

confidence: 99%

Overview and First Results of EUSO-SPB2

Eser,

Olinto,

Wiencke

2023

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

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“…We also tested the operation of the rotator responsible for the azimuth pointing, which can be seen in the left panel of figure 5, indicating that systems are operational and capable of performing ToO follow-up observations on consecutive nights. More on the commissioning of the CT camera can be found in [7,17].…”

Section: Pos(icrc2023)1134mentioning

confidence: 99%

Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Heibges¹

2023

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

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During the Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) mission, we planned Target of Opportunity (ToO) operations to follow up on possible sources of ≳ 10 PeV neutrinos. The original plan before flight was to point the onboard Cherenkov Telescope (CT) to catch the source's path on the sky just below Earth's horizon. By using the Earth as a tau-neutrino to tau-lepton converter, the CT would then be able to look for optical extensive air shower signals induced by tau-lepton decays in the atmosphere. The CT had a field of view of 6.4 • vertical × 12.8 • horizontal. Possible neutrino source candidates include gamma ray bursts, tidal disruption events and other bursting or flaring sources. In addition, follow-ups of binary neutron star mergers would have been possible after the start of the O4 observation run from LIGO-Virgo-KAGRA. The resulting exposure is modeled using the NuSpaceSim framework in ToO mode. With the launch of the EUSO-SPB2 payload on the 13th May 2023, this summarizes the ToO program status and preliminary data, as available.

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Use of Silicon Photomultipliers in the Detectors of the JEM-EUSO Program

Bisconti

2023

Instruments

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The JEM-EUSO program aims to study ultra-high energy cosmic rays from space. To achieve this goal, it has realized a series of experiments installed on the ground (EUSO-TA), various on stratospheric balloons (with the most recent one EUSO-SPB2), and inside the International Space Station (Mini-EUSO), in light of future missions such as K-EUSO and POEMMA. At nighttime, these instruments aim to monitor the Earth’s atmosphere measuring fluorescence and Cherenkov light produced by extensive air showers generated both by very high-energy cosmic rays from outside the atmosphere and by neutrino decays. As the two light components differ in duration (order of microseconds for fluorescence light and a few nanoseconds for Cherenkov light) they each require specialized sensors and acquisition electronics. So far, the sensors used for the fluorescence camera are the Multi-Anode Photomultiplier Tubes (MAPMTs), while for the Cherenkov one, new systems based on Silicon PhotoMultipliers (SiPMs) have been developed. In this contribution, a brief review of the experiments is followed by a discussion of the tests performed on the optical sensors. Particular attention is paid to the development, test, and calibration conducted on SiPMs, also in view to optimize the geometry, mass, and weight in light of the installation of mass-critical applications such as balloon- and space-borne instrumentation.

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Commissioning, Calibration, and Performance of the Cherenkov Telescope on EUSO-SPB2

Cited by 3 publications

References 14 publications

Overview and First Results of EUSO-SPB2

Overview and First Results of EUSO-SPB2

Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope

Use of Silicon Photomultipliers in the Detectors of the JEM-EUSO Program

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