학술논문

Gamma-ray Large-Area Space Telescope (GLAST) balloon flight engineering model: overview
Document Type
Periodical
Source
IEEE Transactions on Nuclear Science IEEE Trans. Nucl. Sci. Nuclear Science, IEEE Transactions on. 49(4):1898-1903 Aug, 2002
Subject
Nuclear Engineering
Bioengineering
Telescopes
Aerospace engineering
Instruments
Data acquisition
Extraterrestrial phenomena
Satellites
Optical design
Collaboration
Poles and towers
Plastics
Language
ISSN
0018-9499
1558-1578
Abstract
The Gamma-ray Large Area Space Telescope (GLAST) Large Area Telescope (LAT) is a pair-production high-energy (> 20 MeV) gamma-ray telescope being built by an international partnership of astrophysicists and particle physicists for a satellite launch in 2006, designed to study a wide variety of high-energy astrophysical phenomena. As part of the development effort, the collaboration has built a balloon flight engineering model (BFEM) for flight on a high-altitude scientific balloon. The BFEM is approximately the size of one of the 16 GLAST-LAT towers and contains all the components of the full instrument: plastic scintillator anticoincidence system (ACD), high-Z foil/Si strip pair-conversion tracker (TKR), CsI hodoscopic calorimeter (CAL), triggering and data acquisition electronics (DAQ), commanding system, power distribution, telemetry, real-time data display, and ground data processing system. The principal goal of the balloon flight was to demonstrate the performance of this instrument configuration under conditions similar to those expected in orbit. Results from a balloon flight from Palestine, TX, on August 4, 2001, show that the BFEM successfully obtained gamma-ray data in this high-background environment.