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Title: Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker

Abstract

The GLAST Large Area Telescope (LAT) is a gamma-ray telescope consisting of a silicon micro-strip detector tracker followed by a segmented CsI calorimeter and covered by a segmented scintillator anticoincidence system that will search for {gamma}-rays in the 20 MeV-300 GeV energy range. The results of the environmental tests performed on the flight modules (towers) of the Tracker are presented. The aim of the environmental tests is to verify the performance of the silicon detectors in the expected mission environment. The tower modules are subjected to dynamic tests that simulate the launch environment and thermal vacuum test that reproduce the thermal gradients expected on orbit. The tower performance is continuously monitored during the whole test sequence. The environmental test activity, the results of the tests and the silicon tracker performance are presented.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
899577
Report Number(s):
SLAC-PUB-12355
TRN: US200709%%179
DOE Contract Number:
AC02-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: Prepared for 9th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Villa Erba, Como, Italy, 17-21 Oct 2005
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTICOINCIDENCE; CALORIMETERS; ENERGY RANGE; PERFORMANCE; TELESCOPES; COSMIC PHOTONS; DESIGN; MECHANICAL TESTS; Instrumentation,INST

Citation Formats

Brigida, M., Caliandro, A., Favuzzi, C., Fusco, P., Gargano, F., Giglietto, N., Giordano, F., Loparco, F., Marangelli, B., Mazziotta, M.N., Mirizzi, N., Raino, S., Spinelli, P., and /Bari U. /INFN, Bari. Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker. United States: N. p., 2007. Web.
Brigida, M., Caliandro, A., Favuzzi, C., Fusco, P., Gargano, F., Giglietto, N., Giordano, F., Loparco, F., Marangelli, B., Mazziotta, M.N., Mirizzi, N., Raino, S., Spinelli, P., & /Bari U. /INFN, Bari. Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker. United States.
Brigida, M., Caliandro, A., Favuzzi, C., Fusco, P., Gargano, F., Giglietto, N., Giordano, F., Loparco, F., Marangelli, B., Mazziotta, M.N., Mirizzi, N., Raino, S., Spinelli, P., and /Bari U. /INFN, Bari. Thu . "Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker". United States. doi:. https://www.osti.gov/servlets/purl/899577.
@article{osti_899577,
title = {Environmental Test Activity on the Flight Modules of the GLAST LAT Tracker},
author = {Brigida, M. and Caliandro, A. and Favuzzi, C. and Fusco, P. and Gargano, F. and Giglietto, N. and Giordano, F. and Loparco, F. and Marangelli, B. and Mazziotta, M.N. and Mirizzi, N. and Raino, S. and Spinelli, P. and /Bari U. /INFN, Bari},
abstractNote = {The GLAST Large Area Telescope (LAT) is a gamma-ray telescope consisting of a silicon micro-strip detector tracker followed by a segmented CsI calorimeter and covered by a segmented scintillator anticoincidence system that will search for {gamma}-rays in the 20 MeV-300 GeV energy range. The results of the environmental tests performed on the flight modules (towers) of the Tracker are presented. The aim of the environmental tests is to verify the performance of the silicon detectors in the expected mission environment. The tower modules are subjected to dynamic tests that simulate the launch environment and thermal vacuum test that reproduce the thermal gradients expected on orbit. The tower performance is continuously monitored during the whole test sequence. The environmental test activity, the results of the tests and the silicon tracker performance are presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}

Conference:
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  • The Gamma-ray Large Area Space telescope (GLAST) is a gamma-ray satellite scheduled for launch in 2008. Before the assembly of the Tracker subsystem of the Large Area Telescope (LAT) science instrument of GLAST, every component (tray) and module (tower) has been subjected to extensive ground testing required to ensure successful launch and on-orbit operation. This paper describes the sequence and results of the environmental tests performed on an engineering model and all the flight hardware of the GLAST LAT Tracker. Environmental tests include vibration testing, thermal cycles and thermal-vacuum cycles of every tray and tower as well as the verificationmore » of their electrical performance.« less
  • No abstract prepared.
  • The GLAST Large Area Telescope (LAT) is a satellite gamma-ray observatory designed to explore the sky in the energy range 20MeV {approx_equal} 300GeV, a region populated by emissions from the most energetic and mysterious objects in the cosmos, like black holes, AGNs, supernovae, gamma-ray bursters. The silicon-strip tracker is the heart of the photon detection system, and with its 80 m{sup 2} of surface and almost 1M channels is one of the largest silicon tracker ever built. Its construction, to be completed by 2006, and the stringent requirements from operation in space, represent a major technological challenge. Critical design, technologymore » and system engineering issues are addressed in this paper, as well as the approach being followed during construction, test and qualification of the LAT silicon tracker.« less
  • The Gamma-ray Large Area Space Telescope represents a great advance in space application of silicon detectors. With a surface of 80 m{sup 2} and about 1 M readout channels it is the largest silicon tracker ever built for a space experiment. GLAST is an astro-particle mission that will study the mostly unexplored, high energy (20 MeV-300 GeV) spectrum coming from active sources or diffused in the Universe. The detector integration and test phase is complete. The full instrument underwent environmental testing and the spacecraft integration phase has just started: the launch is foreseen in late 2007. In the meanwhile themore » spare modules are being used for instrument calibration and performance verification employing the CERN accelerator complex. A Calibration Unit has been exposed to photon, electron and hadron beams from a few GeV up to 300 GeV. We report on the status of the instrument and on the calibration campaign.« less
  • The Large Area Telescope (LAT) on board the Gamma-ray Large Area Space Telescope (GLAST) is a pair-conversion gamma-ray detector designed to explore the gamma-ray universe in the 20 MeV-300 GeV energy band. The Tracker subsystem of the LAT will perform tracking of electrons and positrons to determine the origin of the gamma-ray. The LAT instrument, the Calibration Unit (CU) and the beamtest performed at CERN during the summer 2006 are described in this paper.