X-ray evolving-universe spectroscopy - The XEUS telescope

The XEUS Telescope Working Group was established in 1997 to consider possible designs and technology for the X-ray mirrors. A preliminary report was produced in 1997. Since then, the XEUS concept has undergone several iterations and some work has started on various aspects of the mirror design and technology. This report provides an overview of all the aspects of the X-ray optics considered to date. It culminates in a baseline design that can achieve the scientific goals within the current XEUS concept. Central to this design is the International Space Station, which provides the capability to reach the final goal in two stages: XEUS1 followed by XEUS2. Following on from the baseline design, a number of possible enhancements are considered, which, given the timescale of XEUS, are likely to be important in the development of X-ray mirrors for a mission launched after 2010. An overall summary of the basic concept, design, enhancements and technological challenges is given in the final section Summary and conclusion. This report also contains a discussion of programmatic issues: the mirror technology development programme, status of the mirror technology, cost, production and calibration.