Readout system with on-board demodulation for CMB polarization experiments using coherent polarimeter array

Koji Ishidoshiro, Makoto Nagai, Takeo Higuchi, Masaya Hasegawa, Masashi Hazumi, Masahiro Ikeno, Osamu Tajima, Manobu Tanaka, Tomohisa Uchida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Special pattern in cosmic microwave background (CMB) polarization, B-modes, is a smoking-gun signature of primordial gravitational waves. Q/U Imaging ExperimenT-II (QUIET-II) is being proposed to detect the B-modes using the world's largest coherent polarimeter array (2,000 channels). Having a large number of polarimeters is the generic strategy of the CMB polarization experiments to improve the statistics. Unique detection technique using QUIET's polarimeters, modulation/demodulation scheme, enables us to directly extract polarization signal. The extracted signal is free from non-polarized components and intrinsic 1/f noise. We developed a data readout system including on-board demodulation function for the QUIET-II experiment. We employ a "master" clock strategy. This strategy guarantees phase matching between the modulation on the polarimeters and the demodulation on ADC modules. The single master organizes to generate all carrier clocks and distribute them to each module. The developed electronics, clock modules and the ADC modules, fulfill requirements. Tests with similar setup to the real observation proved that the system works properly. Their performances are confirmed to be suitable for the B-mode measurements.

Original languageEnglish
Title of host publication2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1244-1251
Number of pages8
ISBN (Print)9781467301183
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011 - Valencia, Spain
Duration: 2011 Oct 232011 Oct 29

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2011
CountrySpain
CityValencia
Period11/10/2311/10/29

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Readout system with on-board demodulation for CMB polarization experiments using coherent polarimeter array'. Together they form a unique fingerprint.

Cite this