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Title: Energy and Flavor Discrimination Using Precision Time Structure in On-Axis Neutrino Beams

Abstract

We propose to use a higher-frequency RF bunch structure for the pri- mary proton beam on target and precision timing to select dierent energy and avor 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 dierent 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 avor discrimination of neutrinos produced by hadrons in- ight 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 a super- conducting RF cavity 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.

Authors:
 [1];  [2];  [1];  [1];  [1];  [2]
  1. Chicago U., EFI
  2. Iowa State U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1568844
Report Number(s):
FERMILAB-FN-1068-DI
oai:inspirehep.net:1756338
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Angelico, Evan, Eisch, Jonathan, Elagin, Andrey, Frisch, Henry, Nagaitsev, Sergei, and Wetstein, Matthew. Energy and Flavor Discrimination Using Precision Time Structure in On-Axis Neutrino Beams. United States: N. p., 2019. Web. doi:10.2172/1568844.
Angelico, Evan, Eisch, Jonathan, Elagin, Andrey, Frisch, Henry, Nagaitsev, Sergei, & Wetstein, Matthew. Energy and Flavor Discrimination Using Precision Time Structure in On-Axis Neutrino Beams. United States. doi:10.2172/1568844.
Angelico, Evan, Eisch, Jonathan, Elagin, Andrey, Frisch, Henry, Nagaitsev, Sergei, and Wetstein, Matthew. Tue . "Energy and Flavor Discrimination Using Precision Time Structure in On-Axis Neutrino Beams". United States. doi:10.2172/1568844. https://www.osti.gov/servlets/purl/1568844.
@article{osti_1568844,
title = {Energy and Flavor Discrimination Using Precision Time Structure in On-Axis Neutrino Beams},
author = {Angelico, Evan and Eisch, Jonathan and Elagin, Andrey and Frisch, Henry and Nagaitsev, Sergei and Wetstein, Matthew},
abstractNote = {We propose to use a higher-frequency RF bunch structure for the pri- mary proton beam on target and precision timing to select dierent energy and avor 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 dierent 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 avor discrimination of neutrinos produced by hadrons in- ight 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 a super- conducting RF cavity 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.},
doi = {10.2172/1568844},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Technical Report:

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