First Polarised Light with the NIKA Camera

A. Ritacco, R. Adam, A. Adane, P. Ade, P. André, A. Beelen, B. Belier, A. Benoît, A. Bideaud, N. Billot, O. Bourrion, M. Calvo, A. Catalano, G. Coiffard, B. Comis, A. D’Addabbo, F. X. Désert, S. Doyle, J. Goupy, C. KramerS. Leclercq, J. F. Macías-Pérez, J. Martino, Philip Mauskopf, A. Maury, F. Mayet, A. Monfardini, F. Pajot, E. Pascale, L. Perotto, G. Pisano, N. Ponthieu, M. Rebolo-Iglesias, V. Revéret, L. Rodriguez, G. Savini, K. Schuster, A. Sievers, C. Thum, S. Triqueneaux, C. Tucker, R. Zylka

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

NIKA is a dual-band camera operating with 315 frequency multiplexed LEKIDs cooled at 100 mK. NIKA is designed to observe the sky in intensity and polarisation at 150 and 260 GHz from the IRAM 30-m telescope. It is a test-bench for the final NIKA2 camera. The incoming linear polarisation is modulated at four times the mechanical rotation frequency by a warm rotating multi-layer half- wave plate. Then, the signal is analyzed by a wire grid and finally absorbed by the lumped element kinetic inductance detectors (LEKIDs). The small time constant ((Formula presented.)1 ms ) of the LEKIDs combined with the modulation of the HWP enables the quasi-simultaneous measurement of the three Stokes parameters I, Q, U, representing linear polarisation. In this paper, we present the results of recent observational campaigns demonstrating the good performance of NIKA in detecting polarisation at millimeter wavelength.

Original languageEnglish (US)
JournalJournal of Low Temperature Physics
DOIs
StateAccepted/In press - Oct 19 2015

Keywords

  • KIDs
  • Millimeter astronomy
  • NIKA
  • Polarisation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)

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    Ritacco, A., Adam, R., Adane, A., Ade, P., André, P., Beelen, A., Belier, B., Benoît, A., Bideaud, A., Billot, N., Bourrion, O., Calvo, M., Catalano, A., Coiffard, G., Comis, B., D’Addabbo, A., Désert, F. X., Doyle, S., Goupy, J., ... Zylka, R. (Accepted/In press). First Polarised Light with the NIKA Camera. Journal of Low Temperature Physics. https://doi.org/10.1007/s10909-015-1340-8