Synchrotron-based high-pressure research in materials science Page: 2 of 8
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that decay in the straight section is given by the ratio of the straight section
length to ring circumference. In NF designs typically f~ 0.3.
Fiuev Netrn Fto schmai
AOw s in
i) A high-power multi-GeV proton source.
ii) A target within a high-field solenoid followed by a lower field
larger radius solenoid i decay channel.
iii) A system of rf cavities to capture the daughter muons into a bunch
train, and then apply a time-dependent acceleration to increase the
energy of the slower (low energy) bunches and decrease the energy
of the faster (high energy) bunches (phase rotation).
iv) A cooling channel that reduces the beams transverse phase space so
that it fits within the acceptance of the first acceleration stages.
v) An acceleration scheme that accelerates the muons.
vi) A storage ring with at least one long straight section that points
through the earth to a distant detector.
End-to-end NF simulations show that if the primary proton beam power is
~4lW there will be up to 0(10) muons per year decaying in the beam-
forming straight section. In a near detector the resulting event rates would be
very large. For example, a few tens of meters from the end of a 50 GeV Ne, 10y
muon decays would result in t(107) neutrino events/g/cm2. Perhaps even more
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Chen, Bin; Lin, Jung-Fu; Chen, Jiuhua; Zhang, Hengzhong & Zeng, Qiaoshi. Synchrotron-based high-pressure research in materials science, article, June 1, 2016; (digital.library.unt.edu/ark:/67531/metadc934138/m1/2/: accessed February 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.