Speaker
Evan Angelico
(University of Chicago)
Description
We propose to use a higher-frequency RF bunch structure for the
primary proton beam on target and precision timing to select different
energy and flavor spectra from a wide-band neutrino beam, based on the
relative arrival times of the neutrinos with respect to the RF bunch
structure. This `stroboscopic' approach is an alternative to
techniques that select different neutrino energy spectra based on the
angle with respect to the beam axis. This timing-based approach allows
for the selection of varying energy spectra from the same on-axis
detector, and applies equally to both the near and far detectors in an
oscillation experiment. Energy and flavor discrimination of neutrinos
produced by hadrons in-flight will require the proton bunch lengths on
the order of 100 picoseconds and commensurate precision in the
detector. Correlating neutrino events with the parent proton
interaction is currently limited by the nanosecond-scale width of the
proton bunches impinging on the target. We show that these limitations
can be addressed by using two superconducting RF cavities to re-bunch the
present 53.1 MHz RF bunch structure with a factor of 10 higher RF
frequency, thus attaining the required shorter bunch length.
Primary author
Evan Angelico
(University of Chicago)
Co-authors
Andrey Elagin
(University of Chicago)
Jonathan Eisch
(Iowa State University)
Matthew Wetstein
(Iowa State University)
Sergei Nagaitsev
(Fermilab, University of Chicago)
henry frisch
(university of chicago)
