Special day, time and place:

                          INSTITUTE FOR NUCLEAR AND PARTICLE ASTROPHYSICS
                                            JOURNAL CLUB MEETING


_____________________________________________________


DATE          July 8, 2004

PLACE:        50A-5132

TIME:          11:00 A.M.

SPEAKER:       Dmitri Chirkin (UC Berkeley)

TITLE:         Atmospheric muons in Neutrino detector AMANDA


ABSTRACT:

Atmospheric muons can be an exciting research area of science done with 
the neutrino telescope AMANDA. AMANDA is the Antarctic Muon and Neutrino 
Array designed to detect the tiny neutrino signal in the vast majority 
of background of atmospheric muons and muon- and electron neutrinos. 
This background is measured at about 100 Hz day to day from year to year 
and has been used to tune the telescope and prove that it can actually 
detect neutrinos. The systematic errors in the telescope 0.01 km3 in 
size pile up fast and are difficult to reduce. A combination of 
geometric configuration and muon energy loss properties common to most 
neutrino telescopes of this type provides a unique calibration point in 
energy and therefore total measured flux of atmospheric muons with a 
uncertainty of only a few percent. I will describe the method and 
discuss the results.