Toward the calibration of the HETGS effective area

Details Toward the calibration of the HETGS effective area Toward the calibration of the HETGS effective area

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.3113..144d&link_type=abstract

Proc. SPIE Vol. 3113, p. 144-159, Grazing Incidence and Multilayer X-Ray Optical Systems, Richard B. Hoover; Arthur B. Walker; E

Computer Science

Performance

3

Scientific paper

The high-energy transmission grating for AXAF was tested with the AXAF high resolution mirror assembly during December 1996 through April 1997 at NASA's MSFC X-Ray Calibration Facility. This first-use of the HETG confirms sub-assembly measurements and demonstrates the power of this AXAF grating spectrometer. This paper discusses calibration goals, summarizes the pre- XRCF performance predictions, describes the XRCF data taken, and outlines the general approach to their analysis -- concentrating on the HETG contribution to the HETGS effective area. Very preliminary examples of the analysis of the XRCF data are presented. At a crude level (approximately equal to 30%) the data are in agreement with sub-assembly predictions. Future detailed analysis will result in a definitive instrument calibration.

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