Dark matter search with bubble chambers

Categories: Cosmic Frontier
Published on: July 17, 2016
This is an electronic image of a typical microscopic quartz particulate found during the investigation of the active mass of the PICO-2L detector after its first run. The image was taken using an EDS-SEM (scanning electron microscopy with X-ray microanalysis). Such particulate contamination was thought to be the cause for the anomalous background, and a profound effort went into its elimination (and suppression of its production) for the follow up PICO-2L WIMP-search run.

Presented here is a description of the PICO experiment, which has achieved one of the world’s best exclusions for the detection of Weakly-Interacting Massive Particles (WIMPs): the leading candidate for the Dark Matter particle.

This podcast is a little longer than usual: 8 minutes, 45 seconds.

http://news.fnal.gov/2016/07/dark-matter-search-bubble-chambers/, by Chanpreet Amole: a Ph.D. candidate at Queen’s University in Canada.

Seeing dark matter

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Published on: April 11, 2015

Seeing dark matter in old-fashioned bubble chambers. The PICO collaboration, of which Fermilab is a member (formed from the merger of PICASSO and COUPP).

http://www.fnal.gov/pub/today/archive/archive_2015/today15-04-03.html, by Alan Robinson, University of Chicago.

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