TY - CONF
T1 - The focal plane assembly for the Athena X-ray Integral Field Unit instrument
AU - Barbera, Marco
AU - Gatti, null
AU - Van Weers, Henk J.
AU - Bruijn, null
AU - Jackson, null
AU - Dercksen, null
AU - Lam-Trong, null
AU - Haas, null
AU - Smith, null
AU - Akamatsu, null
AU - Argan, null
AU - Van Der Kuur, Jan
AU - Gottardi, Luciano
AU - Macculi, null
AU - Den Herder, Jan-Williem
AU - Kiviranta, null
AU - Den Hartog, Roland H.
AU - Bandler, Simon
AU - Van Leeuwen, null
AU - Chervenak, null
AU - Piro, null
AU - Barret, Didier
AU - Barbera, null
AU - Kilbourne, null
PY - 2016
Y1 - 2016
N2 - This paper summarizes a preliminary design concept for the focal plane assembly of the X-ray Integral Field Unit on theAthena spacecraft, an imaging microcalorimeter that will enable high spectral resolution imaging and point-sourcespectroscopy. The instrument's sensor array will be a ~ 3840-pixel transition edge sensor (TES) microcalorimeter array,with a frequency domain multiplexed SQUID readout system allowing this large-format sensor array to be operatedwithin the thermal constraints of the instrument's cryogenic system. A second TES detector will be operated in closeproximity to the sensor array to detect cosmic rays and secondary particles passing through the sensor array for off-linecoincidence detection to identify and reject events caused by the in-orbit high-energy particle background. The detectors,operating at 55 mK, or less, will be thermally isolated from the instrument cryostat's 2 K stage, while shielding andfiltering within the FPA will allow the instrument's sensitive sensor array to be operated in the expected environmentduring both on-ground testing and in-flight operation, including straylight from the cryostat environment, low-energyphotons entering through the X-ray aperture, low-frequency magnetic fields, and high-frequency electric fields.
AB - This paper summarizes a preliminary design concept for the focal plane assembly of the X-ray Integral Field Unit on theAthena spacecraft, an imaging microcalorimeter that will enable high spectral resolution imaging and point-sourcespectroscopy. The instrument's sensor array will be a ~ 3840-pixel transition edge sensor (TES) microcalorimeter array,with a frequency domain multiplexed SQUID readout system allowing this large-format sensor array to be operatedwithin the thermal constraints of the instrument's cryogenic system. A second TES detector will be operated in closeproximity to the sensor array to detect cosmic rays and secondary particles passing through the sensor array for off-linecoincidence detection to identify and reject events caused by the in-orbit high-energy particle background. The detectors,operating at 55 mK, or less, will be thermally isolated from the instrument cryostat's 2 K stage, while shielding andfiltering within the FPA will allow the instrument's sensitive sensor array to be operated in the expected environmentduring both on-ground testing and in-flight operation, including straylight from the cryostat environment, low-energyphotons entering through the X-ray aperture, low-frequency magnetic fields, and high-frequency electric fields.
UR - http://hdl.handle.net/10447/215547
M3 - Other
SP - 99052I-
ER -