Large-mass ultralow noise germanium detectors: Performance and applications in neutrino and astroparticle physics

Published

Journal Article

A new type of radiation detector, a p-type modified electrode germanium diode, is presented. It is shown that the prototype displays, for the first time, a combination of features (mass, energy threshold and background expectation) required for a measurement of coherent neutrino-nucleus scattering in a nuclear reactor experiment. First results are presented from its calibration using sub-kiloelectronvolt nuclear recoils similar to those expected from reactor antineutrinos or light WIMPs (weakly interacting massive particles) beyond the reach of present detectors. The device hybridizes the mass and energy resolution of a conventional HPGe coaxial gamma spectrometer with the low electronic noise and threshold of a small x-ray semiconductor detector, also displaying an intrinsic ability to distinguish multiple-site from single-site particle interactions. The present performance of the prototype and possible further improvements are discussed, as well as other applications for this new type of device in neutrino and astroparticle physics (double-beta decay, neutrino magnetic moment and novel WIMP searches). © IOP Publishing Ltd.

Full Text

Duke Authors

Cited Authors

  • Barbeau, PS; Collar, JI; Tench, O

Published Date

  • September 1, 2007

Published In

Electronic International Standard Serial Number (EISSN)

  • 1475-7516

International Standard Serial Number (ISSN)

  • 1475-7516

Digital Object Identifier (DOI)

  • 10.1088/1475-7516/2007/09/009

Citation Source

  • Scopus