Readout of a 176 pixel FDM system for SAFARI TES arrays

被引：17

作者：

Hijmering, R. A. ^{[1
]}

den Hartog, R. ^{[1
]}

Ridder, M. ^{[1
]}

van der Linden, A. J. ^{[1
]}

van der Kuur, J. ^{[1
]}

Gao, J. R. ^{[1
,2
]}

Jackson, B. ^{[3
]}

机构：

[1] SRON Netherlands Inst Space Res, Utrecht, Netherlands

[2] Delft Univ Technol, Kavli Inst NanoSci, Delft, Netherlands

[3] SRON Netherlands Inst Space Res, Groningen, Netherlands

来源：

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VIII | 2016年 / 9914卷

关键词：

Readout; FDM; TES; bolometers; SPICA; SAFARI; QUANTUM INTERFERENCE DEVICE; DOMAIN-MULTIPLEXED READOUT; BASEBAND FEEDBACK;

D O I：

10.1117/12.2231714

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper we present the results of our 176-pixel prototype of the FDM readout system for SAFARI, a TES-based focal-plane instrument for the far-IR SPICA mission. We have implemented the knowledge obtained from the detailed study on electrical crosstalk reported previously. The effect of carrier leakage is reduced by a factor two, mutual impedance is reduced to below 1 nH and mutual inductance is removed. The pixels are connected in stages, one quarter of the array half of the array and the full array, to resolve intermediate technical issues. A semi-automated procedure was incorporated to find all optimal settings for all pixels. And as a final step the complete array has been connected and 132 pixels have been read out simultaneously within the frequency range of 1-3.8MHz with an average frequency separation of 16kHz. The noise was found to be detector limited and was not affected by reading out all pixels in a FDM mode. With this result the concept of using FDM for multiplexed bolometer read out for the SAFARI instrument has been demonstrated.

引用

页数：13

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