A test platform for the detection and readout chain for the Athena X-IFU
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Date
2021-07-07
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0
Public Domain Mark 1.0
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Abstract
We present a test platform for the Athena X-IFU detection chain, which will serve as the first demonstration of the representative end-to-end detection and readout chain for the X-IFU, using prototypes of the future flight
electronics and currently available subsystems. This test bench, housed in a commercial two-stage ADR cryostat,
includes a focal plane array placed at the 50 mK cold stage of the ADR with a kilopixel array of transition-edge sensor microcalorimeter spectrometers and associated cold readout electronics. Prototype room temperature electronics
for the X-IFU provide the readout, and will evolve over time to become more representative of the X-IFU mission
baseline. The test bench yields critical feedback on subsystem designs and interfaces, in particular the warm readout
electronics, and will provide an in-house detection system for continued testing and development of the warm readout
electronics and for the validation of X-ray calibration sources. In this paper, we describe the test bench subsystems
and design, characterization of the cryostat, and current status of the project.