Multi-mode TES bolometer optimization for the LSPE-SWIPE instrument

TL;DR

This paper investigates optimizing multi-mode TES bolometers for the LSPE-SWIPE instrument to enhance CMB polarization measurements, focusing on detector parameters under increased background noise and operational constraints.

Contribution

It presents a detailed analysis of detector parameter optimization for multi-mode TES bolometers in a balloon-borne CMB experiment.

Findings

Optimal detector parameters identified for multi-mode TES operation.

Enhanced sensitivity achievable with specific parameter configurations.

Guidelines for detector design under flight conditions.

Abstract

In this paper we explore the possibility of using transition edge sensor (TES) detectors in multi-mode configuration in the focal plane of the Short Wavelength Instrument for the Polarization Explorer (SWIPE) of the balloon-borne polarimeter Large Scale Polarization Explorer (LSPE) for the Cosmic Microwave Background (CMB) polarization. This study is motivated by the fact that maximizing the sensitivity of TES bolometers, under the augmented background due to the multi-mode design, requires a non trivial choice of detector parameters. We evaluate the best parameter combination taking into account scanning strategy, noise constraints, saturation power and operating temperature of the cryostat during the flight.