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O
rbiting
W
ide-angle
L
ight-collectors
(OWL)
Detector Design
(click on any OWL to reach home)
- Energy resolution - 14 % @ 1020 eV and improves with energy
- Angular resolution - < 1 degree
- Longitudinal profile - Locate shower max to within 50 g / cm2
- Able to statistically identify protons, nuclei, and photons
- Perform event-by-event identification of near horizontal and Earth-skimming neutrinos
- Detector viewing stereo aperture - 4 x 106 km2
sr at the energy threshold of 1020 eV
- > 5 year operation with ~ 10 % duty cycle
The focal plane requirements include:
- UV filtering, sun shield
- Better than microsecond sampling
- Single photoelectron sensitivity
- 105 or 106 gain
Among the focal plane options under consideration are:
- Microchannel or microsphere plates
- Commercial multi-anode photomultiplier tubes
A service of the Exploration of the Universe Division (EUD) at NASA's GSFC
Responsible NASA Official: Robert Streitmatter
Astrophysics questions? Ask a Physicist
NASA-specific questions? Try the NASA home page
OWL Web page questions or comments? Email Robert Streitmatter or John Krizmanic or Web curators, Beth Barbier and Sara Mitchell
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This file was last modified May 4, 2004
