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Title: The Muon g $-$ 2 experiment at Fermilab

Abstract

Here, the Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 ppb, reducing the experimental uncertainty by a factor of 4 compared to the previous measurement at BNL (E821). The measurement technique adopts the storage ring concept used for E821, with magic-momentum muons stored in a highly uniform 1.45 T magnetic dipole field. The spin precession frequency is extracted from an analysis of the modulation of the rate of higher-energy positrons from muon decays, detected by 24 calorimeters and 3 straw tracking detectors. Compared to the E821 experiment, muon beam preparation, storage ring internal hardware, field measuring equipment, and detector and electronics systems are all new or significantly upgraded. Herein, I report on the status of the experiment as of Sept. 2016, presenting the magnetic field uniformity results after the completion of the first round of shimming and outlining the construction progress of the main detector systems.

Authors:
 [1]
  1. Boston Univ., Boston, MA (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)
Contributing Org.:
Muon g-2
OSTI Identifier:
1373303
Report Number(s):
FERMILAB-CONF-17-216-E
Journal ID: ISSN 2405-6014; 1607378; TRN: US1702203
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear and Particle Physics Proceedings
Additional Journal Information:
Journal Volume: 287-288; Journal Issue: C; Journal ID: ISSN 2405-6014
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Mott, James. The Muon g $-$ 2 experiment at Fermilab. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysbps.2017.03.046.
Mott, James. The Muon g $-$ 2 experiment at Fermilab. United States. doi:10.1016/j.nuclphysbps.2017.03.046.
Mott, James. Wed . "The Muon g $-$ 2 experiment at Fermilab". United States. doi:10.1016/j.nuclphysbps.2017.03.046. https://www.osti.gov/servlets/purl/1373303.
@article{osti_1373303,
title = {The Muon g $-$ 2 experiment at Fermilab},
author = {Mott, James},
abstractNote = {Here, the Muon g-2 experiment at Fermilab will measure the anomalous magnetic moment of the muon to a precision of 140 ppb, reducing the experimental uncertainty by a factor of 4 compared to the previous measurement at BNL (E821). The measurement technique adopts the storage ring concept used for E821, with magic-momentum muons stored in a highly uniform 1.45 T magnetic dipole field. The spin precession frequency is extracted from an analysis of the modulation of the rate of higher-energy positrons from muon decays, detected by 24 calorimeters and 3 straw tracking detectors. Compared to the E821 experiment, muon beam preparation, storage ring internal hardware, field measuring equipment, and detector and electronics systems are all new or significantly upgraded. Herein, I report on the status of the experiment as of Sept. 2016, presenting the magnetic field uniformity results after the completion of the first round of shimming and outlining the construction progress of the main detector systems.},
doi = {10.1016/j.nuclphysbps.2017.03.046},
journal = {Nuclear and Particle Physics Proceedings},
number = C,
volume = 287-288,
place = {United States},
year = {2017},
month = {6}
}

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