Optimal Demodulation Domain for Microwave SQUID Multiplexers in Presence of Readout System Noise

• DOI: 10.48550/arxiv.2406.06782
• Publication Date: 2024-06-10
• Authors: M.E. García Redondo; N. A. Müller; J. M. Salum; L.P. Ferreyro; J. Bonilla-Neira; J. M. Geria; J. Bonaparte; T. Muscheid; R. Gartmann; A. Almela; Matías Rolf Hampel; Alan Fuster; Luis E. Ardila-Perez; K. Mathias Wegner; M. Platino; Oliver Sander; Sebastian Kempf; M. Weber
• Keywords: ddc:620; Physics - Instrumentation and Detectors; FOS: Physical sciences; Physics - Applied Physics; Instrumentation and Detectors (physics.ins-det); Applied Physics (physics.app-ph); Astrophysics - Instrumentation and Methods for Astrophysics; 530; Instrumentation and Methods for Astrophysics (astro-ph.IM); Engineering & allied operations; info:eu-repo/classification/ddc/620; 620

The Microwave SQUID Multiplexer ({\mu}MUX) is the device of choice for readout a large number Low-Temperature Detectors in wide variety experiments within fields astronomy and particle physics. While it offers multiplexing factors, system noise performance highly dependent on cold warm-readout electronic systems used to read out, as well demodulation domain parameters chosen. In order understand impact overall performance, first we extended available {\mu}MUX simulation frameworks including additive multiplicative sources probing tones (i.e. phase amplitude noise), along with capability demodulating scientific data, either resonator's or amplitude. Then, considering dominant source, optimum achieve minimum were found both open-loop flux-ramp schemes aforementioned domains. Later, evaluated sensitivity under parameters. Finally, case study, optimal expected level typical Software-Defined Radio (SDR) system. This work leads an improved prediction engineering based electronics selected domain.