Bulletin of the American Physical Society
2009 APS April Meeting
Volume 54, Number 4
Saturday–Tuesday, May 2–5, 2009; Denver, Colorado
Session E1: Poster Session I (4:30-6:45pm)
Saturday, May 2, 2009
Room: Plaza Exhibit
Sponsoring Unit: APS
Abstract ID: BAPS.2009.APR.E1.59
Abstract: E1.00059 : Simulating Background Radiation to Establish NuSTAR Detection Limits*
Preview Abstract Abstract
The NuSTAR (Nuclear Spectroscopic Telescope Array) project will launch a telescope array into orbit that will image X-rays of energies from 5 keV to 80 keV. To determine if the instrument meets the required sensitivity, we need to establish the lower bound on the flux into the detectors necessary to observe an object. To establish the minimum acceptable flux, analysis must be performed on a model of the background radiation. A model of the detector was made, accounting for the detector dimensions and telescope optics and data from prospective satellite orbits. Monte Carlo methods were employed to generate random background radiation events weighted according to the aperture and energy spectra data and the detector model, forming the background radiation simulation. The point spread function (PSF) for the NuSTAR telescope was used to model what would be detected from a point source. The model data was combined and the signal to noise ratio was inspected with variations in the sources modelled to establish the detection lower bound. The background simulation can be redone as the apparatus design changes, allowing for further analysis against source models.
*This material is based upon work supported by NASA Award Number NNG06WC20G.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.APR.E1.59
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700