Current Status of the Ali CMB Polarization Telescope Focal Plane Camera

被引：7

作者：

Salatino, Maria ^{[1
,2
]}

Austermann, Jason ^{[3
]}

Meinke, Jeremy ^{[3
,6
]}

Sinclair, Adrian K. ^{[6
]}

Walker, Samantha ^{[4
,5
]}

Bai, Xiran ^{[1
,2
]}

Beall, James ^{[3
]}

Connors, Jake ^{[4
,5
]}

Dober, Bradley ^{[3
]}

Duff, Shannon M. ^{[3
]}

Givhan, Richard C. ^{[1
,2
]}

Hilton, Gene ^{[3
]}

Hubmayr, Johannes ^{[3
]}

Karpel, Ethan D. ^{[1
,2
]}

Kuo, Chao-Lin ^{[1
,2
]}

Mani, Hamdi ^{[6
]}

Mates, John A. B. ^{[3
]}

Mathewson, Justin ^{[6
]}

Mauskopf, Philip ^{[6
]}

Montana-Lopez, Jordi A. ^{[1
,2
]}

Stephenson, Ryan ^{[6
]}

Thompson, Keith L. ^{[1
,2
]}

Ullom, Joel ^{[3
]}

van Lanen, Jeff ^{[3
]}

Yoon, Ki Won ^{[1
,2
]}

Weeks, Eric L. ^{[6
]}

Wu, Yi-Han ^{[1
,2
]}

Zhang, Xinmin ^{[7
]}

机构：

[1] Stanford Univ, Stanford, CA 94305 USA

[2] KIPAC, Stanford, CA 94305 USA

[3] NIST, Quantum Sensors Grp, Boulder, CO 80305 USA

[4] Univ Colorado, Boulder, CO 80309 USA

[5] NIST, Boulder, CO USA

[6] Arizona State Univ, Tempe, AZ 85004 USA

[7] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2021年 / 31卷 / 05期

关键词：

B-modes; Cosmic Microwave Background; cryogenics; kilopixel focal planes; low noise amplifier; microwave multiplexing readout; radio frequency system-on-chip; Tibet; transition-edge sensor;

D O I：

10.1109/TASC.2021.3065289

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ali CMB Polarization Telescope (AIiCPT) is the first Cosmic Microwave Background (CMB) polarimeter with a large focal plane camera to be deployed in the Northern Hemisphere, in the Tibetan Plateau. Here we present the design of a dichroic (90/150 GHz) focal plane camera capable of hosting up to 32,376 Transition-Edge Sensor (TES) bolometers operating from a base temperature of 280 mK. Detectors are fabricated as monolithic arrays of 1,704 feedhorn-coupled and polarization-sensitive TES holometers that are packaged in independent modules and read out with a microwave multiplexing architecture. A custom RFSoC-based system manages the multiplexing readout. Prototype AIiCPT pixels have been fabricated and characterized, demonstrating pass-hand performance within 2.5% of design and cross-polarization systematic sensitivity <= 2%.

引用

页数：5

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