The new multi-frequency instrument (mfi2) for the quijote facility in tenerife

Roger J. Hoyland, Jose Alberto Rubino-Martin, Marta Aguiar-Gonzalez, Paz Alonso-Arias, Eduardo Artal, Mark Ashdown, R. B. Barreiro, Francisco J. Casas, Carlos Colodro-Conde, Elena De La Hoz, Mateo Fernandez-Torreiro, Pablo A. Fuerte-Rodriguez, Ricardo T. Genova-Santos, Maria F. Gomez-Renasco, Eduardo D. Gonzalez-Carretero, Raul Gonzalez-Gonzalez, Frederica Guidi, Carlos Hernandez-Monteagudo, Diego Herranz, Anthony N. LasenbyCarlos H. Lopez-Caraballo, Enrique Martinez-Gonzalez, Asier Oria-Carreras, Michael W. Peel, Angeles Perez-De-Taoro, Cristina Perez-Lemus, Lucio Piccirillo, Rafael Rebolo, Jesus Salvador Rodriguez-Diaz, Rafael Toledo-Moreo, Afrodisio Vega-Moreno, Patricio Vielva, Robert A. Watson, Antonio Zamora-Jimenez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The QUIJOTE (Q-U-I joint Tenerife) experiment combines the operation of two radio-telescopes and three instruments working in the microwave bands 10-20 GHz, 26-36 GHz and 35-47 GHz at the Teide Observatory, Tenerife, and has already been presented in previous SPIE meetings (Hoyland, R. J. et al, 2012; Rubino-Martln et al., 2012). The Cosmology group at the IAC have designed a new upgrade to the MFI instrument in the band 10-20 GHz. The aim of the QUIJOTE telescopes is to characterise the polarised emission of the cosmic microwave background (CMB), as well as galactic and extra-galactic sources, at medium and large angular scales. This MFI2 will continue the survey at even higher sensitivity levels. The MFI2 project led by the Instituto de Astroflsica de Canarias (IAC) consists of five polarimeters, three of them operating in the sub-band 10-15 GHz, and two in the sub-band 15-20 GHz. The MFI2 instrument is expected to be a full two-three times more sensitive than the former MFI. The microwave complex correlator design has been replaced by a simple correlator design with a digital back-end based on the latest Xilinx FPGAs (ZCU111). During the first half of 2019 the manufacture of the new cryostat was completed and since then the opto-mechanical components have been designed and manufactured. It is expected that the cryogenic front-end will be completed by the end of 2022 along with the FPGA acquisition and observing system. This digital system has been employed to be more robust against stray ground-based and satellite interference, having a frequency resolution of 1 MHz.

Original languageEnglish
Title of host publicationMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI
EditorsJonas Zmuidzinas, Jian-Rong Gao
ISBN (Electronic)9781510653610
Publication statusPublished - 2022
EventMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022 - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceMillimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI 2022


  • CMB
  • Cryogenics
  • Direct digital conversion
  • Early Universe
  • FPGA
  • Instrumentation
  • Microwaves
  • Polarimeter
  • Telescopes


Dive into the research topics of 'The new multi-frequency instrument (mfi2) for the quijote facility in tenerife'. Together they form a unique fingerprint.

Cite this