Development and testing of the FDM readout of the TES arrays aboard the LSPE/SWIPE balloon-borne experiment

25 Jul 2019, 17:45
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia

Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Detector readout, signal processing, and related technologies Poster session

Speaker

Dr Andrea Tartari (INFN - Sezione di Pisa)

Description

The design and experimental demonstration of a 16-channel frequency-domain multiplexing (FDM) readout for transition-edge sensor (TES) bolometers is presented. This MUX electronics is intended to readout the 326 spiderweb bolometers of the LSPE/SWIPE balloon-borne experiment, which aims at the detection of the B-mode polarization of the cosmic microwave background (CMB) at large angular scales. The cryogenic part of our 16-channel FDM readout chain features LC resonators composed of custom Nb superconducting inductors and SMD capacitors mounted on boards next to the detector wafers, at 300 mK, while the SQUID board is at 1.6 K. The warm section is based on a modular solution, with mezzanine plug-ins for DAC (comb generation), ADC (demodulation) and a SoC (based on Altera Cyclone V FPGA) for data reduction. The warm electronics, which must operate in the harsh conditions of an Arctic winter-night flight, handles the generation of the FDM tones, the de-multiplexing and the digital signal analysis including, e.g., cosmic-ray glitches removal. Here we recall its specifications, we address noise considerations, and finally we present the latest results obtained using flight models of our custom-designed boards.

Less than 5 years of experience since completion of Ph.D N
Student (Ph.D., M.Sc. or B.Sc.) N

Primary author

Dr Andrea Tartari (INFN - Sezione di Pisa)

Co-authors

Dr Alessandro Baldini (INFN - Sezione di Pisa) Prof. Fabrizio Cei (Physics Department - University of Pisa and INFN - Sezione di Pisa) Dr Luca Galli (INFN - Sezione di Pisa) Dr Marco Grassi (INFN - Sezione di Pisa) Prof. Donato Nicolò (Physics Department - University of Pisa and INFN - Sezione di Pisa) Mr Marco Piendibene (INFN - Sezione di Pisa) Dr Franco Spinella (INFN - Sezione di Pisa) Dr Davide Vaccaro (INFN - Sezione di Pisa) Dr Giovanni Signorelli (INFN - Sezione di Pisa)

Presentation Materials