Demonstration of Time Domain Multiplexed Readout for Magnetically Coupled Calorimeters
- Author
- Stevenson, T. R.
- Published
- 2012.
- Physical Description
- 1 electronic document
- Additional Creators
- Drung, D., Busch, S. E., Adams, J. S., Smith, S. J., Porst, J.-P., Beyer, J., Balvin, M., Seidel, G. M., and Bandler, S.
Online Version
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Free-to-read Unrestricted online access - Summary
- Magnetically coupled calorimeters (MCC) have extremely high potential for x-ray applications due to the inherent high energy resolution capability and being non-dissipative. Although very high energy-resolution has been demonstrated, until now there has been no demonstration of multiplexed read-out. We report on the first realization of a time domain multiplexed (TDM) read-out. While this has many similarities with TDM of transition-edge-sensors (TES), for MGGs the energy resolution is limited by the SQUID read-out noise and requires the well established scheme to be altered in order to minimize degradation due to noise aliasing effects. In cur approach, each pixel is read out by a single first stage SQUID (SQ1) that is operated in open loop. The outputs of the SQ1 s are low-pass filtered with an array of low cross-talk inductors, then fed into a single-stage SQUID TD multiplexer. The multiplexer is addressed from room temperature and read out through a single amplifier channel. We present results achieved with a new detector platform. Noise performance is presented and compared to expectations. We have demonstrated multiplexed X-ray spectroscopy at 5.9keV with delta_FWHM=10eV. In an optimized setup, we show it is possible to multiplex 32 detectors without significantly degrading the Intrinsic detector resolution.
- Other Subject(s)
- Collection
- NASA Technical Reports Server (NTRS) Collection.
- Note
- Document ID: 20120011773.
GSFC.ABS.01124.2012.
Applied Superconductivity Conference; 7 - 12 Oct. 2012; Portland, OR; United States. - Terms of Use and Reproduction
- Copyright, Distribution as joint owner in the copyright.
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