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Astrophysics > Instrumentation and Methods for Astrophysics

arXiv:1909.04279 (astro-ph)
[Submitted on 10 Sep 2019]

Title:Laser test with Mini-EUSO

Authors:Viktoria Kungel, Mario E. Bertaina, Francesca Bisconti, Marco Casolino, Johannes Eser, Lawrence Wiencke, JEM-EUSO Collaboration
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Abstract:Mini-EUSO (Extreme Universe Space Observatory) is a small-scale prototype cosmic-ray detector that will measure Earth`s UV emission and other atmospheric phenomena from space. It will be placed in the International Space Station (ISS) behind a UV-transparent window looking to the nadir. The launch is planned this year (2019). Consisting of a multi-anode photomultiplier (MAPMT) camera and a $25$ cm diameter Fresnel lens system, Mini-EUSO has a \ang{44} field of view (FoV), a $6.5$ km$^2$ spatial resolution on the ground and a $2.5\ \mu$s temporal resolution. In principle, Mini-EUSO will be sensitive to extensive air shower (EAS) from cosmic-rays with energies above $10^{21}$ eV. A mobile, steerable UV laser system will be used to test the expected energy threshold and performance of Mini-EUSO. The laser system will be driven to remote locations in the Western US and aimed across the field of view of Mini-EUSO when the ISS passes overhead during dark nights. It will emit pulsed $355$ nm UV laser light to produce a short speed-of-light track in the detector. The brightness of this track will be similar to the track from an EAS resulting from a cosmic-ray of up to $10^{21}$ eV. The laser energy is selectable with a maximum of around $90$ mJ per pulse. The energy calibration factor is stable within $5\ \% $. The characteristics of the laser system and Mini-EUSO have been implemented inside the JEM-EUSO OffLine software framework, and laser simulation studies are ongoing to determine the best way to perform a field measurement.
Comments: Presented at the 36th ICRC (Madison, WI; 2019)
Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM); High Energy Physics - Experiment (hep-ex)
Report number: PoS(ICRC2019)325
Cite as: arXiv:1909.04279 [astro-ph.IM]
  (or arXiv:1909.04279v1 [astro-ph.IM] for this version)
  https://doi.org/10.48550/arXiv.1909.04279

Submission history

From: Viktoria Kungel [view email]
[v1] Tue, 10 Sep 2019 04:37:58 UTC (921 KB)
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