Abstract submitted to
the
2005 Particle
Accelerator Conference
16th to 20th May 2005, Knoxville,
Tennessee, USA
PAC05: Abstract number
2547.
High precision measurement of muon beam emittance reduction
in MICE
C. Rogers
for
the
MICE Collaboration
Abstract
Muon ionization cooling, an essential ingredient of a
neutrino factory, will be demonstrated for the first time by the MICE
experiment. The central part of MICE
consists of a short section of a neutrino factory cooling channel and the
emittance reduction achieved in this experiment is quite modest, 10% to
15%. In order to extrapolate the
performance of a full cooling channel from these values, it is crucial for MICE
to achieve an emittance measurement accuracy of 10^-3 absolute. So far, beam emittance has never been
measured with such a high level of precision and normailzed emittance in its
present definition is not even conserved to 10^-3 in the absence of dissipative
forces. We present an improved
definition of beam emittance and the requirements and constraints on MICE
beam optics and spectrometers that are necessary to achieve the 10^-3 level of
accuracy.