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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 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 complementary to techniques that select different neutrino energy spectra based on the angle with respect to the beam axis. A 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 proton bunch lengths on the order of 100 ps and commensurate time resolution 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 superconducting rf cavity to rebunch 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]; ORCiD logo [3];  [2]
  1. Univ. of Chicago, IL (United States). Enrico Fermi Inst.
  2. Iowa State Univ., Ames, IA (United States)
  3. Univ. of Chicago, IL (United States). Enrico Fermi Inst.; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
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
Alternate Identifier(s):
OSTI ID: 1558831
Report Number(s):
arXiv:1904.01611; FERMILAB-FN-1068-DI
Journal ID: ISSN 2470-0010; PRVDAQ; oai:inspirehep.net:1727972
Grant/Contract Number:  
AC02-07CH11359; SC-0008172; SC0017946
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 100; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

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:10.1103/PhysRevD.100.032008.
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:10.1103/PhysRevD.100.032008.
Angelico, Evan, Eisch, Jonathan, Elagin, Andrey, Frisch, Henry, Nagaitsev, Sergei, and Wetstein, Matthew. Mon . "Energy and flavor discrimination using precision time structure in on-axis neutrino beams". United States. doi:10.1103/PhysRevD.100.032008.
@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 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 complementary to techniques that select different neutrino energy spectra based on the angle with respect to the beam axis. A 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 proton bunch lengths on the order of 100 ps and commensurate time resolution 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 superconducting rf cavity to rebunch the present 53.1 MHz rf bunch structure with a factor of 10 higher rf frequency, thus attaining the required shorter bunch length.},
doi = {10.1103/PhysRevD.100.032008},
journal = {Physical Review D},
number = 3,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
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