High-Density Superconducting Cables for Advanced ACTPol
High-Density Superconducting Cables for Advanced ACTPol
复制标题
用于先进 ACTPol 的高密度超导电缆
DOI：
10.1007/s10909-015-1454-z
复制
发表时间：
2016
影响因子：
2
通讯作者：
Edward J. Wollack
中科院分区：
文献类型：
--
作者：
C. Pappas;J. Austermann;J. Beall;S. Duff;P. Gallardo;E. Grace;S. Henderson;S. Ho;B. Koopman;Dale Li;J. McMahon;F. Nati;M. Niemack;P. Niraula;M. Salatino;A. Schillaci;B. Schmitt;S. Simon;S. Staggs;J. Stevens;E. Vavagiakis;J. Ward;Edward J. Wollack
先进的ACTPol（AdvACT）是一个即将到来的阿塔卡玛宇宙望远镜（ACT）接收器升级，计划在2016年部署，这将允许测量宇宙微波背景偏振和温度的最高精度与ACT。AdvACT的灵敏度增加部分是通过增加每个阵列的过渡边缘传感器（TES）的数量来提供的，与当前的ACTPol接收器检测器阵列相比，增加了多达两倍。高密度AdvACT TES阵列需要70 $μm间距超导柔性电缆（flex）将探测器晶片连接到第一级读出电子设备。在这里，我们提出的柔性制造过程和测试结果。对于柔性布线层，我们使用400 nm厚的溅射铝膜。在电缆的中心，布线由聚酰亚胺基板支撑，该基板平滑地过渡到电缆端部的裸露（未涂覆聚酰亚胺）硅基板，以实现稳健的楔形引线键合接口。对为第一个AdvACT阵列制造的第一批Flex进行的测试表明，Flex将满足AdvACT的要求，在500 mK时超导临界电流超过1 mA，对机械和低温应力具有弹性，室温屈服值为97$$\，\%$$%。
Advanced ACTPol (AdvACT) is an upcoming Atacama Cosmology Telescope (ACT) receiver upgrade, scheduled to deploy in 2016, that will allow measurement of the cosmic microwave background polarization and temperature to the highest precision yet with ACT. The AdvACT increase in sensitivity is partly provided by an increase in the number of transition-edge sensors (TESes) per array by up to a factor of two over the current ACTPol receiver detector arrays. The high-density AdvACT TES arrays require 70 $$\upmu $$μm pitch superconducting flexible cables (flex) to connect the detector wafer to the first-stage readout electronics. Here, we present the flex fabrication process and test results. For the flex wiring layer, we use a 400-nm-thick sputtered aluminum film. In the center of the cable, the wiring is supported by a polyimide substrate, which smoothly transitions to a bare (uncoated with polyimide) silicon substrate at the ends of the cable for a robust wedge wire-bonding interface. Tests on the first batch of flex made for the first AdvACT array show that the flex will meet the requirements for AdvACT, with a superconducting critical current above 1 mA at 500 mK, resilience to mechanical and cryogenic stress, and a room temperature yield of 97$$\,\%$$%.
影响因子：
1.6
作者：
Dobbs, M. A.;Lueker, M.;Williamson, R.
通讯作者：
Williamson, R.