Galaxy formation from kinky cosmic strings
- Institut d'Astrophysique, Paris (France)
The recent discoveries and excitement generated by space satellite experiment EGRET (presently operating on Compton Gamma Ray Observatory -- CGRO) have prompted an investigation into modern detector technologies for the next generation space based gamma ray telescopes. The GLAST proposal is based on silicon strip detectors as the [open quotes]technology of choice[close quotes] for space application: no consumables, no gas volume, robust (versus fragile), long lived, and self triggerable. The GLAST detector basically has two components: a tracking module preceding a calorimeter. The tracking module has planes of crossed strip (x,y) 300 um pitch silicon detectors coupled to a thin radiator to measure the coordinates of converted electron-positron pairs. The gap between the layers ([approximately]5 cm) provides a lever arm for track fitting resulting in an angular resolution of <0.10 at high energy. The status of this R D effort is discussed including details on triggering the instrument, the organization of the detector electronics and readout, and work on computer simulations to model this instrument.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6910010
- Journal Information:
- Astrophysical Journal; (United States), Vol. 354; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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