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Baseband Feedback Frequency-Division Multiplexing with Low-Power dc-SQUIDs and Digital Electronics for TES X-Ray Microcalorimeters |
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| Authors: | K. Sakai Y. Takei R. Yamamoto N. Y. Yamasaki K. Mitsuda M. Hidaka S. Nagasawa S. Kohjiro T. Miyazaki |
| Affiliation: | 1. ISAS/JAXA, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa, ?252-5210, Japan 2. AIST, Tsukuba, Ibaraki, ?305-8562, Japan 3. RIKEN, 2-1 Hirosawa, Wako, Saitama, ?351-0198, Japan |
| Abstract: | We are developing frequency-division multiplexing (FDM) systems with baseband feedback for TES X-ray microcalorimeter arrays for use with the DIOS mission. To meet the requirement of limited cooling capacity at cryogenic temperatures, we developed low-power and FDM-optmized dc-SQUIDs. To make maximum use of the SQUIDs, we also developed digital electronics using FPGA evaluation boards and ADC/DAC FMC daughter cards, and evaluated signal-to-noise ratios and gain-bandwidth products. |
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