Development of a HPGe Detector for the Longitudinal Emittance Measurement
In partial fulfillment of the requirements for the degree of Master of Science from Michigan State University.
AbstractThe longitudinal emittance of the beam from the RIKEN Ring Cyclotron (RRC) is
indispensable knowledge for the operation of the Radioactive Isotope Beam Factory,
which is now under construction and uses the RRC as an injector. We proposed to
employ a HPGe detector as a compact and convenient energy detector for longitudinal
emittance measurements and studied the feasibility of its use with high-energy heavy
ions. A reasonably good energy resolution, dE/E = 6.5´10-4, has been observed for
1890-MeV N-14, which makes the HPGe promising. A new detector is being fabricated
to achieve a better resolution. Also the longitudinal emittances were measured for
3800-MeV Ar-40 and 2420-MeV Ne-22. It has been demonstrated that the measurement
of longitudinal emittance provides rich information on the acceleration condition, such
as the single-turn extraction and the effect of phase compression, and is very helpful
for the beam tuning of the present and new facilities.
R. Taki (2003) (Master's Thesis)
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