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Title: Response of the D0 calorimeter to cosmic ray muons

Abstract

The D0 Detector at the Fermi National Accelerator Laboratory is a large multi-purpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 4π muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February - May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run.

Authors:
 [1]
  1. New York Univ. (NYU), NY (United States)
Publication Date:
Research Org.:
New York Univ., NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
589185
Report Number(s):
DOE/CH/03000-T31
ON: DE97054501; TRN: 98:001784
DOE Contract Number:
AC02-76CH03000
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: TH: Thesis (Ph.D.); PBD: Oct 1992
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 66 PHYSICS; SHOWER COUNTERS; COSMIC MUONS; COSMIC RAY DETECTION; PROTON-ANTIPROTON INTERACTIONS; CALIBRATION; ENERGY LOSSES; IONIZATION

Citation Formats

Kotcher, Jonathan. Response of the D0 calorimeter to cosmic ray muons. United States: N. p., 1992. Web. doi:10.2172/589185.
Kotcher, Jonathan. Response of the D0 calorimeter to cosmic ray muons. United States. doi:10.2172/589185.
Kotcher, Jonathan. Thu . "Response of the D0 calorimeter to cosmic ray muons". United States. doi:10.2172/589185. https://www.osti.gov/servlets/purl/589185.
@article{osti_589185,
title = {Response of the D0 calorimeter to cosmic ray muons},
author = {Kotcher, Jonathan},
abstractNote = {The D0 Detector at the Fermi National Accelerator Laboratory is a large multi-purpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 4π muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February - May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run.},
doi = {10.2172/589185},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 1992},
month = {Thu Oct 01 00:00:00 EDT 1992}
}

Thesis/Dissertation:
Other availability
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  • The D0 Detector at the Fermi National Accelerator Laboratory is a large multipurpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 4π muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February -May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run.
  • The D0 Detector at the Fermi National Accelerator Laboratory is a large multipurpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 47π muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February--May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run. We have compared the shapesmore » of the experimentally-obtained pulse height spectra to the Landau prediction for the ionization loss in a continuous thin absorber in the four electromagnetic and four hadronic layers of the calorimeter, and find good agreement after experimental effects are folded in. We have also determined an absolute energy calibration using two independent methods: one which measures the response of the electronics to a known amount of charge injected at the preamplifiers, and one which uses a carry-over of the calibration from a beam test of central calorimeter modules. Both absolute energy conversion factors agree with one another, within their errors. The calibration determined from the test beam carryover, relevant for use with collider physics data, has an error of 2.3%. We believe that, with further study, a final error of ~1% will be achieved. The theory-to-experiment comparison of the peaks (or most probable values) of the muon spectra was used to determine the layer-to-layer consistency of the muon signal. We find that the mean response in the 3 fine hadronic layers is (12 ± 2%) higher than that in the 4 electromagnetic layers. These same comparisons have been used to verify the absolute energy conversion factors. The conversion factors work well for the electromagnetic sections.« less
  • We present a search for tmore » $$\bar{t}$$ production in events having dielectron final states in 120.2 ± 6.5 pb -1 of p$$\bar{p}$$ collisions at √s = 1.8 TeV using the D0 detector.« less
  • The D-Zero experiment at Fermi National Accelerator Laboratory examines proton-antiproton collisions at a center of mass energy of 1.8 Te V. An analysis of the response of the D-Zero calorimeter to single electrons and pions has been performed. The data were obtained from beam tests performed on end calorimeter modules between May and August of 1990. The shapes of electromagnetic and hadronic energy showers were as expected, and agreed with Monte Carlo simulations of the detector. Many methods were investigated to determine the transverse position of the centroid of a particle shower. A corrected-center-of-gravity method gave good results for electromagneticmore » showers. For hadronic showers, the best algorithm for determining shower centroid position was a center-of-gravity type of calculation with specific weights using all the longitudinal layers of the calorimeter. In both the electromagnetic and hadronic case, the magnitudes of optimized readout tower thresholds indicated that the tails of the transverse energy distributions could be ignored in calculations of position. The energy dependence of the electromagnetic position resolution was found to be σ(r · Φ) = (17.9 ± 0.4)E -0.6851±0.005 mm and of the hadronic position resolution was σ(r · Φ) = (54.9 ± 1.3)E -0.551±0.005 mm. The energy dependence of the hadronic position resolution in the current D-Zero Monte Carlo does not follow the idealized E - 1/2 behavior. The angular dependence of the position resolution was as expected. The energy response for jets in the D-Zero calorimeter can be estimated from the energy response of the calorimeter to single particles, convoluted with the particle content of jets. The transverse energy of jets calculated by summing simulated single particles reproduced the energy dependence for jets produced in the calorimeter using the event generator ISAJET. To use test-beam data as input for calculating the jet energy expected in the collider environment, the Monte Carlo will have to be tuned to match the test beam data, a reliable simulation of jet fragmentation must be found, and effects due to energy leakage in and out of the jet cone must be measured in each event.« less