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Indirect glass slumping of grazing incidence mirror segments for lightweight x-ray telescopes
(2017)
The paper provides a description of recent progress in the development of lightweight, precision and highthroughput
grazing-incidence mirrors for X-ray astronomy made of glass. In particular, the indirect slumping
technology under investigation at the Max Planck Institute for Extraterrestrial Physics (MPE) is reviewed and
recent activities are presented together with the research approach. The glass slumping technique foresees
several steps: a thermal forming process using a suitable mould; a re
ective layer application; the alignment
and integration of mirror segments into a supporting structure; and the nal verication of prototype modules
using X-rays. Each step is considered at MPE, with the involvement of partner institutes and universities. The
last year of activities was mainly dedicated to the procurement of new moulds and to the application of Iridium
coating. The main results will be presented.