Development and calibration of the tracking Compton/Pair telescope MEGA
Autor: | James D. Kurfess, Mark L. McConnell, G. DiCocco, Robert Andritschke, Peter F. Bloser, James M. Ryan, Victor Reglero, Marco Ajello, Andreas Zoglauer, John R. Macri, G. Kanbach, Stanley D. Hunter |
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Rok vydání: | 2005 |
Předmět: |
Physics
Nuclear and High Energy Physics Calorimeter (particle physics) Physics::Instrumentation and Detectors business.industry Astrophysics::High Energy Astrophysical Phenomena Compton telescope Astrophysics::Instrumentation and Methods for Astrophysics Mega Tracking (particle physics) law.invention Telescope Optics Stack (abstract data type) law Calibration Sensitivity (control systems) business Instrumentation |
Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 541:310-322 |
ISSN: | 0168-9002 |
Popis: | We describe the development and tests of the prototype for a new telescope for Medium Energy Gamma-ray Astronomy (MEGA) in the energy band 0.4–50 MeV. As a successor to COMPTEL and EGRET (at low energies), MEGA aims to improve the sensitivity for astronomical sources by at least an order of magnitude. It could thus fill the severe sensitivity gap between scheduled or operating hard-X-ray and high-energy gamma-ray missions and open the way for a future Advanced Compton Telescope. MEGA records and images γ-rays by completely tracking Compton and Pair creation events in a stack of double-sided Si-strip track detectors surrounded by a pixelated CsI calorimeter. A scaled down prototype has been built and we describe technical details of its design and properties. Results from calibrations using radioactive sources and from measurements with an accelerator generated, fully polarized, γ-ray beam are presented and an outlook to future plans with MEGA is given. |
Databáze: | OpenAIRE |
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