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The X-ray Integral Field Unit (X-IFU) for Athena

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Figure 1. Simulated Athena observation of the Perseus cluster, highlighting the advanced capabilities for revealing the intricacies of the physical mechanisms at play
Table 1. Key performance requirements for the Athena X-IFU.
Figure 3. The X-IFU block diagram showing the main system components and the two temperature stages at 50 mK and 2 K
Figure 4. Frequency Domain Multiplexing principle: Left) The schematics of a 3-pixel channel
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