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First Measurements of Transverse Emittance Reduction in MICE Step IV
- Heidt, Christopher Wells
- Advisor(s): Hanson, Gail
Abstract
The Muon Ionization Cooling Experiment (MICE) will provide the first demonstration of emittance reduction in transverse phase space without sacrifice of the longitudinal
beam momentum in pure muon beam (> 99:9%). The short lifetime of the muon ( 2.20 µs)
requires the development of new techniques for beam cooling to meet the needs of future
muon based research facility, such as the proposed Neutrino Factory and Muon Collider.
MICE is a single particle experiment, in that emittance is calculated from an ensemble of
single particle measurements as collected by two scintillating fiber trackers located at either
end of the MICE cooling channel. Originally purposed as a six step experiment, allowing
for systematics of the various components of the experiment to be studied independently,
MICE Step IV provides the first opportunity to measure emittance reduction.
Presented here is an introduction to the history of Higgs and Neutrino physics
which serves as a motivation for the development of a high energy muon facility. Chapter 2
outlines some basic principles of accelerator physics leading into Chapter 3, which details the
various subsystems that comprise MICE. Chapter 4 is dedicated to a discussion of the MICE
Analysis User Software (MAUS), developed by the experiment to handle the reconstruction
of MICE data. The particular focus of this chapter will be on the implementation of
the MAUS tracker software and Monte Carlo routines. In the final chapter data from
the 2016/04 ISIS User cycle is analyzed. Two different techniques for performing particle
identification are discussed and a final figure on total emittance reduction across a LiH
absorber is presented.
Main Content
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