The Advanced Particle-astrophysics Telescope: Simulation of the Instrument Performance for Gamma-Ray Detection
| Autor: | Eric Burns, John Krizmanic, Jeremy Buhler, Richard Bose, Wolfgang V. Zober, Makiko Kuwahara, Patrick L. Kelly, A. Zink, Roberta Pillera, Eric A. Wulf, G. E. Simburger, G. S. Varner, Riccardo Paoletti, George Suarez, Manel Errando, Gang Liu, Roger D. Chamberlain, Jonah Hoffman, Dana Braun, Dawson J. Huth, Brian Rauch, Teresa Tatoli, Wenlei Chen, J. G. Mitchell, F. Licciulli, M. N. Mazziotta, Michael Cherry, Zachary Hughes, Stefan Funk, J. H. Buckley, Georgia A. de Nolfo, S. Alnussirat, D. Serini, Jeffrey Dumonthier, Marion Sudvarg, Leonardo Di Venere, Corrado Altomare, John Mitchell, Francesco Giordano |
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| Rok vydání: | 2021 |
| Předmět: |
Astroparticle physics
Physics Photon Physics::Instrumentation and Detectors Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Instrumentation and Methods for Astrophysics Scintillator Photon energy law.invention Telescope Nuclear physics Observatory law Sensitivity (control systems) Fermi Gamma-ray Space Telescope |
| Zdroj: | Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021). |
| Popis: | We present simulations of the instrument performance of the Advanced Particle-astrophysics Telescope (APT), a mission concept of a $\gamma$-ray and cosmic-ray observatory in a sun-Earth Lagrange orbit. The key components of the APT detector include a multiple-layer tracker composed of scintillating fibers and an imaging calorimeter composed of thin layers of CsI:Na scintillators. The design is aimed at maximizing effective area and field of view for $\gamma$-ray and cosmic-ray measurements, subject to constraints on instrument cost and total payload mass. We simulate a detector design based on $3$-meter scintillating fibers and develop reconstruction algorithms for $\gamma$-rays from a few hundreds of $\mathrm{keV}$ up to a few $\mathrm{TeV}$ energies. At the photon energy above $30~\mathrm{MeV}$, pair-production/shower reconstruction is applied; the results show that APT could provide an order of magnitude improvement in effective area and sensitivity for $\gamma$-ray detection compared with the Fermi Large Area Telescope (LAT). A multiple-Compton-scattering reconstruction at photon energies below $10~\mathrm{MeV}$ achieves sensitive detection of faint $\gamma$-ray bursts (GRBs) and other $\gamma$-ray transients down to $\sim0.01~\mathrm{MeV/cm}^2$ with degree-level to sub-degree-level localization accuracy. The Compton analysis also provides a measurement of polarization where the minimum detectable degree of polarization for $\sim1~\mathrm{MeV/cm}^2$ GRBs is below $20\%$. In addition to the APT simulations, we present the simulated performance of the Antarctic Demonstrator for APT, a 0.5m-square cross section balloon experiment that includes all of the key elements of the full APT detector. |
| Databáze: | OpenAIRE |
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