skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Passive Absorbers for Maximizing the Performance of the Mu2e-II Experiment

Abstract

The Fermilab’s Mu2e experiment is designed to search for Charged Lepton Flavour Violation in direct, neutrinoless conversion of a muon into an electron in the presence of a nuclear electromagnetic field. The quantity, which is observed is the ratio between the rate of the above BSM (Beyond Standard Model) conversion reaction and the rate of muon capture on the nucleus. The measurement precision is expected to reach up to 10 -17 [1]. Mu2e-II is the name for the second phase of the experiment, which is planned to run with the lower energy, higher intensity primary proton beam provided by the PIP-II [2] accelerator, currently under construction. Ionization cooling with a wedge absorber is introduced into Mu2e-II setup to potentially increase the number of low momentum muons reaching the target. A study is made into the position and size of the wedge inside the beamline using G4Beamline simulation framework. Results show an increase up to 12% for muons with momentum P below 30 MeV/c and 7% for muons with P<40 MeV/c when the beam is measured right after the wedge. Further studies are necessary to investigate how this gain can be delivered to the stopping target.

Authors:
 [1];  [2];  [2]
  1. Warsaw U.
  2. Fermilab
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)
Contributing Org.:
Mu2e
OSTI Identifier:
1524797
Report Number(s):
FERMILAB-CONF-19-211-AD
1738768
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Journal Name:
IPAC2019 - Proceedings
Additional Journal Information:
Conference: 10th International Particle Accelerator Conference, Melbourne, Australia, 19-24 May 2019
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Manczak, J., Neuffer, D., and Stratakis, D. Passive Absorbers for Maximizing the Performance of the Mu2e-II Experiment. United States: N. p., 2019. Web.
Manczak, J., Neuffer, D., & Stratakis, D. Passive Absorbers for Maximizing the Performance of the Mu2e-II Experiment. United States.
Manczak, J., Neuffer, D., and Stratakis, D. Tue . "Passive Absorbers for Maximizing the Performance of the Mu2e-II Experiment". United States. https://www.osti.gov/servlets/purl/1524797.
@article{osti_1524797,
title = {Passive Absorbers for Maximizing the Performance of the Mu2e-II Experiment},
author = {Manczak, J. and Neuffer, D. and Stratakis, D.},
abstractNote = {The Fermilab’s Mu2e experiment is designed to search for Charged Lepton Flavour Violation in direct, neutrinoless conversion of a muon into an electron in the presence of a nuclear electromagnetic field. The quantity, which is observed is the ratio between the rate of the above BSM (Beyond Standard Model) conversion reaction and the rate of muon capture on the nucleus. The measurement precision is expected to reach up to 10-17 [1]. Mu2e-II is the name for the second phase of the experiment, which is planned to run with the lower energy, higher intensity primary proton beam provided by the PIP-II [2] accelerator, currently under construction. Ionization cooling with a wedge absorber is introduced into Mu2e-II setup to potentially increase the number of low momentum muons reaching the target. A study is made into the position and size of the wedge inside the beamline using G4Beamline simulation framework. Results show an increase up to 12% for muons with momentum P below 30 MeV/c and 7% for muons with P<40 MeV/c when the beam is measured right after the wedge. Further studies are necessary to investigate how this gain can be delivered to the stopping target.},
doi = {},
journal = {IPAC2019 - Proceedings},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {1}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: