2015/03/19 by Hannah Marlowe, Marlowe, Hannah, Randall L. McEntaffer +30
Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #FOS: Physical sciences #Geophysics and Sensor Technology #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Particle Accelerators and Free-Electron Lasers #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1503.05809
Draft Version March 19, 2015
arxiv created 2015/03/19 · openalex publication_date 2015/03/19 · arxiv updated 2015/03/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
An X-ray spectrograph consisting of radially ruled off-plane reflection gratings and silicon pore optics was tested at the Max Planck Institute for extraterrestrial Physics PANTER X-ray test facility. The silicon pore optic (SPO) stack used is a test module for the Arcus small explorer mission, which will also feature aligned off-plane reflection gratings. This test is the first time two off-plane gratings were actively aligned to each other and with a SPO to produce an overlapped spectrum. The gratings were aligned using an active alignment module which allows for the independent manipulation of subsequent gratings to a reference grating in three degrees of freedom using picomotor actuators which are controllable external to the test chamber. We report the line spread functions of the spectrograph and the actively aligned gratings, and plans for future development.