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Title: Cosmic ray muon charge ratio in the MINOS far detector

Abstract

The MINOS Far Detector is a 5.4 kiloton (5.2 kt steel plus 0.2 kt scintillator plus aluminum skin) magnetized tracking calorimeter located 710 meters underground in the Soudan mine in Northern Minnesota. MINOS is the first large, deep underground detector with a magnetic field and thus capable of making measurements of the momentum and charge of cosmic ray muons. Despite encountering unexpected anomalies in distributions of the charge ratio (N{sub μ +/N μ-) of cosmic muons, a method of canceling systematic errors is proposed and demonstrated. The result is R eff = 1.346 ± 0.002 (stat) ± 0.016 (syst) for the averaged charge ratio, and a result for a rising fit to slant depth of R(X) = 1.300 ± 0.008 (stat) ± 0.016 (syst) + (1.8 ± 0.3) x 10 -5 x X, valid over the range of slant depths from 2000 < X < 6000 MWE. This slant depth range corresponds to minimum surface muon energies between 750 GeV and 5 TeV.

Authors:
 [1]
  1. Univ. of Minnesota, Minneapolis, MN (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
892438
Report Number(s):
FERMILAB-THESIS-2005-74
TRN: US200704%%419
DOE Contract Number:
AC02-76CH03000
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ALUMINIUM; CALORIMETERS; COSMIC MUONS; MAGNETIC FIELDS; MINUS-PLUS RATIO; MUONS; PHOSPHORS; STEELS; Experiment-HEP

Citation Formats

Beall, Erik B. Cosmic ray muon charge ratio in the MINOS far detector. United States: N. p., 2005. Web. doi:10.2172/892438.
Beall, Erik B. Cosmic ray muon charge ratio in the MINOS far detector. United States. doi:10.2172/892438.
Beall, Erik B. Thu . "Cosmic ray muon charge ratio in the MINOS far detector". United States. doi:10.2172/892438. https://www.osti.gov/servlets/purl/892438.
@article{osti_892438,
title = {Cosmic ray muon charge ratio in the MINOS far detector},
author = {Beall, Erik B.},
abstractNote = {The MINOS Far Detector is a 5.4 kiloton (5.2 kt steel plus 0.2 kt scintillator plus aluminum skin) magnetized tracking calorimeter located 710 meters underground in the Soudan mine in Northern Minnesota. MINOS is the first large, deep underground detector with a magnetic field and thus capable of making measurements of the momentum and charge of cosmic ray muons. Despite encountering unexpected anomalies in distributions of the charge ratio (N{sub μ+/Nμ-) of cosmic muons, a method of canceling systematic errors is proposed and demonstrated. The result is Reff = 1.346 ± 0.002 (stat) ± 0.016 (syst) for the averaged charge ratio, and a result for a rising fit to slant depth of R(X) = 1.300 ± 0.008 (stat) ± 0.016 (syst) + (1.8 ± 0.3) x 10-5 x X, valid over the range of slant depths from 2000 < X < 6000 MWE. This slant depth range corresponds to minimum surface muon energies between 750 GeV and 5 TeV.},
doi = {10.2172/892438},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2005},
month = {Thu Dec 01 00:00:00 EST 2005}
}

Thesis/Dissertation:
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