Author/Authors :
Halloin، نويسنده , , H. and von Ballmoos، نويسنده , , P. and Evrard، نويسنده , , J. and Skinner، نويسنده , , G.K. and Abrosimov، نويسنده , , N. and Bastie، نويسنده , , P. and Di Cocco، نويسنده , , G. and George، نويسنده , , M. and Hamelin، نويسنده , , B. and Jean، نويسنده , , P. and Knِdleseder، نويسنده , , J. M. Laporte، نويسنده , , Ph. and Badenes، نويسنده , , C. and Laurent، نويسنده , , Ph. and Smither، نويسنده , , R.K.، نويسنده ,
Abstract :
CLAIRE is a balloon-borne telescope dedicated to validating the concept of a crystal diffraction lens for nuclear astrophysics. For the first time, focusing γ-rays enters into the domain of the high energy astrophysics. This represents a breakthrough in γ-ray instrumentation, and will allow unprecedent sensitivities. CLAIREʹs first flights occurred on June 15 2000 and on June 14 2001. Here we present its performance during the two flights in terms of pointing accuracy, background noise and estimated efficiency of the lens.
Keywords :
Instrumentation for nuclear astrophysics , Crystal diffraction , Stratospheric flights , ?-Ray spectroscopy
