10.03.2014 Views

Weak force carriers, W+, Z°, W- have spin 1

Weak force carriers, W+, Z°, W- have spin 1

Weak force carriers, W+, Z°, W- have spin 1

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

SNO – a unique D 2 O Cerenkov detector that can “see” all neutrino types<br />

11<br />

4700’ underground in the Creighton nickel mine in Sudbury, Canada, to suppress background<br />

from cosmic ray muons, etc:<br />

acrylic vessel holds<br />

1000 tonnes of heavy<br />

water, D 2<br />

O that makes<br />

an ideal detector for<br />

neutrinos.<br />

20” diameter photomultiplier<br />

tubes looking<br />

inward detect Cerenkov<br />

light when a neutrino<br />

interacts in the water<br />

Neutrino candidate event:<br />

Cerenkov “ring” on one side<br />

of the detector with nothing<br />

entering from the other side.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!