Modeling of Planck-high frequency instrument bolometers using non-linear effects in the thermometers - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Année : 2006

Modeling of Planck-high frequency instrument bolometers using non-linear effects in the thermometers

M. Piat
  • Fonction : Auteur
J.-P. Torre
  • Fonction : Auteur
A. Woodcraft
  • Fonction : Auteur
W. Holmes
  • Fonction : Auteur
R. Sudiwala
  • Fonction : Auteur

Résumé

The Planck satellite, which is planned to be launched in 2007, is dedicated to surveying the Cosmic Microwave Background (CMB) to a high precision. Aboard this mission, the High-Frequency Instrument (HFI) will use 52 NTD Ge spiderweb bolometers made by Caltech-JPL and cooled to 100 mK by a dilution cooler. In this paper, we present a model of these detectors that includes non-linear effects seen in NTD Ge thermometers: electron-phonon decoupling and electrical field effect. We show that this model leads to consider only electrical field effect. Furthermore, the optical characterization of the HFI bolometers clearly shows a non-ideal behavior that is explained by non-linear effects in the thermometer. We finally show that these effects have to be taken into account for optimized CMB observations and to fully understand the physics of semi-conducting bolometers.

Dates et versions

in2p3-00189826 , version 1 (22-11-2007)

Identifiants

Citer

M. Piat, J.-P. Torre, E. Bréelle, A. Coulais, A. Woodcraft, et al.. Modeling of Planck-high frequency instrument bolometers using non-linear effects in the thermometers. 11th International Workshop on Low Temperature Detectors - LTD-11, Jul 2005, Tokyo, Japan. pp.588-590, ⟨10.1016/J.NIMA.2005.12.076⟩. ⟨in2p3-00189826⟩
9 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More