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The X-Ray Telescope for Solar-B Results of the Calibration Tests and Predicted Performance

The X-Ray Telescope for Solar-B Results of the Calibration Tests and Predicted Performance. Edward DeLuca for the XRT Team. MSFC XRCF Jeff McCracken Cary Reily Jay Carpenter Jeff Kegley Rich Siler Dave Watson Ernie Wright Galen Zirstein Joey Norwood. SAO Gerry Austin

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The X-Ray Telescope for Solar-B Results of the Calibration Tests and Predicted Performance

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  1. The X-Ray Telescope for Solar-BResults of the Calibration Tests and Predicted Performance Edward DeLuca for the XRT Team

  2. MSFC XRCF Jeff McCracken Cary Reily Jay Carpenter Jeff Kegley Rich Siler Dave Watson Ernie Wright Galen Zirstein Joey Norwood SAO Gerry Austin John Boczenowski Jay Bookbinder Dave Caldwell Jon Chappell Peter Cheimets Jonathan Cirtain Florine Collette Mario Cosmo Bill Davis Ed DeLuca Ed Dennis Leslie Frazier Leon Golub Mike Harris Tom Kent Warren Martell Sang Park Lisa Paton Bill Podgorski Alana Sette Jason Scott (MSU) Sara Shivers (MIT) Dave Weaver Mark Weber Contributors • MSFC Other • Dave Lehner • Alan Shapiro • J R Griffith • Bill Jones • Tommy Thompson • Cydale Smith • Martin Smithers • Thomas Kester • Gary Thornton • Dave Zissa • WS Smith • John Hraba • James Carter • Patricia Puckett • J-Side At MSCF • Taro Sakao (JAXA) • Hirohisa Hara (NAOJ) • Kazuyoshi Kumagai (NAOJ) • Tomonori Tamura (NAOJ) • Kentaro Yaji (NAOJ) • Ken Kobayashi (MSFC) • From Japan • Saku Tsuneta (NAOJ) • Ryouhei Kano (NAOJ) • Kenji Hiyoshi (Meisei) • MSFC Other • Larry Hill • Barbara Cobb • Danny Colman • Robert Jayroe • Marvin Nowlin • Jerry Owens • Tom Perrin • Phil Stahl • Alphonse Sterling • Charlotte Talley • Palermo • Marco Barbera • Sal Varisco • LMSAL • Dick Catura • Mons Morrison • Brian Gantner 6th Solar-B Science Meeting

  3. XRT on the FAM @ XRCF 6th Solar-B Science Meeting

  4. Test Sequence • Mirror Calibration Test • 10 Jan- 10 Feb 2005 X-Ray Calibration Facility @ MSFC • Determined that mirror was distorted by the fixture. Masking around the mirror mounts fixes the problem. • Mirror PSF and EE at two energies • Effective Area at five energies • Data from LM SXI CCD and FPC through calibrated pinholes • XRT End-to-End Test • 1-14 Jun 2005 XRCF @ MSFC • Effective area • PSF and EE at five energies and two focus positions • Wings of PSF • Filter throughput • Alignment: visible light optic - X-ray mirror • Data from XRT flight CCD 6th Solar-B Science Meeting

  5. XRT Performance Requirements 6th Solar-B Science Meeting

  6. Outline • Image quality • PSF • Encircled Energy • Scattering • Image quality over the FOV • Throughput • Effective Area • Filter Throughput • Diagnostic Capability • Temperature resolution - isothermal plasma • Visible Light Imager • Visible and X-ray optical axes alignment 6th Solar-B Science Meeting

  7. PSF Measured By CCD After sub-pixel analysis Direct image on CCD 6th Solar-B Science Meeting

  8. PSF after corrections for 1-G and finite source distance. 6th Solar-B Science Meeting

  9. Encircled Energy at 1keV Data from the mirror calibration and end-to-end test on the encircled energy. The combined data, corrected for 1-G and finite source distance, together with predictions based on Goodrich measurements. 6th Solar-B Science Meeting

  10. Scattering at 1keV Integrated Cu-L flux from 10, 100 & 300um pinholes taken from the optical axis to 950um off axis. Forward fitting of the observations to a model Gaussian+Lorentzian, and corrected for finite source and 1-G effects. Scattering contribution at 1-arcmin is < 1e-5. 6th Solar-B Science Meeting

  11. Image quality as a function of position at best focus. XRCF measurements and model predictions. 6th Solar-B Science Meeting

  12. FOV Optimized Focus & Best On-Axis Focus Note that the RMD diameter includes CCD pixelization, 1-G distortions and finite source effects. 6th Solar-B Science Meeting

  13. XRT Effective Area at Five Energies 6th Solar-B Science Meeting

  14. X-Ray Filters & Temperature Response Curves 6th Solar-B Science Meeting

  15. Filter throughput XRCF measurements vs. calculations based on Luxel thicknesses 6th Solar-B Science Meeting

  16. Diagnostics 6th Solar-B Science Meeting

  17. Visible and X-ray Optical Axes Over lay of visible (upper left) and X-ray images. The light sources were located 54.9” apart. The resulting visible and X-ray optical axes are 17”± 5” apart. 6th Solar-B Science Meeting

  18. Conclusions • Image quality • XRT will be the highest resolution solar X-ray telescope ever flown: Mirror FWHM < 0.8”; Scattering at 1’ < 10-5. • Throughput • Substantial collecting area (> 2 cm2) at long wavelengths (cool plasma); Significant collecting area (> 0.5 cm2 @ 1.5 keV) at short wavelengths (high temperatures) • Diagnostics • With 9 X-ray filters XRT can identify the temperature of an isothermal plasma to within 0.1 (logT), from 6.1 to 7.5 LogT. 6th Solar-B Science Meeting

  19. 6th Solar-B Science Meeting

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