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Haymes, Robert C. Fitch, John E. 2009-06-04T00:02:19Z 2009-06-04T00:02:19Z 1988 Fitch, John E.. "The design and development of Prometheus 1: Rice University's coded aperture faint object gamma ray telescope." (1988) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13282">https://hdl.handle.net/1911/13282</a>. https://hdl.handle.net/1911/13282 Thesis Sp. Sci. 1988 Fitch Rice University has been developing a gamma ray telescope to be used for the detection of spectral gamma ray lines from Type I supernovae within one megaparsec in the energy range from 100 keV to 10 MeV. The detector is an actively shielded array of 121 0.5$\sp{\prime\prime}$ x 0.5$\sp{\prime\prime}$ x 2.0$\sp{\prime\prime}$ NaI(Tl) crystals, each optically separated from the remainder of the array independently viewed. Inflight calibration of the 121 individual PMTs will be handled by an on board computer in conjunction with LEDs attached to the crystals. The active shield is constructed of individual blocks viewed separately by one or more photomultiplier tubes acting in anticoincidence with the central detector, providing excellent isolation from non-source gamma ray detections. The telescope uses a coded aperture approach yielding an overall geometrical spatial resolution of 2.6$\sp\circ$ x 2.6$\sp\circ$ FWHM. The energy resolution of the detector is expected to be 12% FWHM at 0.661 MeV. Simulations of the detector/shield assembly yield a projected sensitivity of 1 $\times$ 10$\sp{-4}$ photons cm$\sp{-2}$ sec$\sp{-1}$ for a 3 sigma detection at 1 MeV. (Abstract shortened with permission of author.) 127 p. application/pdf eng Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder. Astronomy Astrophysics The design and development of Prometheus 1: Rice University's coded aperture faint object gamma ray telescope Thesis Text Space Science Natural Sciences Rice University Masters Master of Science open.access