Low Loss Superconducting Microstrip Development at Argonne National Lab
CL Chang, PAR Ade, Z Ahmed, SW Allen, K Arnold, JE Austermann, AN Bender, IE Bleem, BA Benson, JE Carlstrom, HM Cho, ST Ciocys, JF Cliche, TM Crawford, A Cukierman, J Ding, T de Haan, MA Dobbs, D Dutcher, W Everett Show all
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2015
Low loss superconducting microstrip is an essential component in realizing 100 kilo-pixel multichroic cosmic microwave background detector arrays. We have been developing a low loss microstrip by understanding and controlling the loss mechanisms. We present the fabrication of the superconducting microstrip, the loss measurements at a few GHz frequencies using half-wavelength resonators, and the loss measurements at 220 GHz frequencies with the superconducting microstrip coupled to slot antennas at one end and to TES detectors at the other end. The measured loss tangent of the microstrip made of sputtered Nb and SiOx is 1-2e-3.
Awarded by Office of Science and the Office of Basic Energy Sciences of the U.S. Department of Energy
Awarded by National Science Foundation (NSF)
Awarded by NSF Physics Frontiers Center
Awarded by NSF
This work was supported in part by the Office of Science and the Office of Basic Energy Sciences of the U.S. Department of Energy under Contract DE-AC02-06CH11357; by the National Science Foundation (NSF) under Grant ANT-0638937; by the NSF Physics Frontiers Center under Grant PHY-1125897; by The Kavli Foundation; by the Gordon and Betty Moore Foundation; and by the NSF under Grant AST-0956135.