Characterization and performance of the InFOCμS 20-40 keV x-ray focusing mirror

S. M. Owens, F. Berendse, T. Okajima, K. Misaki, Y. Ogasaka, K. Tamura, Y. Tawara, H. Kunieda, K. W. Chan, Y. Soong, W. H. Baumgartner, H. Krimm, J. Tueller, P. J. Serlemitsos, K. Yamashita, K. Haga, S. Ichimaru, S. Takahashi, A. Gotou, H. KitouS. Fukuda, Y. Kamata, A. Furuzawa, F. Akimoto, T. Yoshioka, K. Kondou, Y. Haba, T. Tanaka

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Mass production of replicated thin aluminum x-ray reflecting foils for the InFOCμS (International Focusing Optics Collaboration for Micro-Crab Sensitivity) balloon payload is complete, and the full mirror has been assembled. InFOCμS is an 8-meter focal length hard x-ray telescope scheduled for first launch in July 2001 and will be the first instrument to focus and image x-rays at high energies (20-40 keV) using multilayer-based reflectors. The individual reflecting elements are replicated thin aluminum foils, in a conical approximation Wolter-I system similar to those built for ASCA and ASTRO-E. These previous imaging systems achieved half-power-diameters of 3.5 and 1.7-2.1 arcminutes respectively. The InFOCμS mirror is expected to have angular resolution similar to the ASTRO-E mirror. The reflecting foils for InFOCμS, however, utilize a vertically graded Pt/C multilayer to provide broad-band high-energy focusing. We present the results of our pre-flight characterization of the full mirror, including imaging and sensitivity evaluations. If possible, we will include imaging results from the first flight of a multilayer-based high-energy focusing telescope.

Original languageEnglish
Pages (from-to)115-126
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 01-01-2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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