Novel superconducting detectors for next-generation CMB and submm instruments

The kinetic inductance detector (KID) offers simple fabrication, intrinsic multiplexing of thousands of detectors per cable, much higher dynamic range than competing technologies, and near background-limited operation at mm and submm-wavelength frequencies.  I'll discuss two related applications. The first, SuperSpec, is an compact, mm-wavelength, on-chip spectrometer. Its small size, wide spectral bandwidth, and highly multiplexed detector readout will enable construction of powerful multi-object spectrometers for high-redshift observations.  The design employs a filter bank consisting of a series of superconducting thin film circuit elements, each coupled to titanium nitride lumped-element KID.  I will discuss the design, optimization, and measured performance of prototype devices and the upcoming observing run of the SuperSpec demonstration instrument.  The second project, the Chicago CMB-KIDs program, is a lab demonstration of a KID-based, polarization sensitive, multi-band array optimized for CMB observations. I'll discuss our pixel designs and current progress toward demonstrating a full-scale array suitable for deployment in the Stage-4 CMB experiment.


Wednesday, 12 April, 2017 - 14:00

Salle / Local: 

454A, bâtiment Condorcet

Nom/Prénom // Last name/First name: 

Erik Shirokoff


Astronomy & Astrophysics Department, Kavli Institute for Cosmological Physics, University of Chicago