IPAC2018 - List of Authors (Crnkovic, J.D.)

Paper	Title	Page
TUPMK015	Initial Studies into Longitudinal Ionization Cooling for the Muon g-2 Experiment	1522
	J. Bradley Edinburgh University, Edinburgh, United Kingdom J.D. Crnkovic BNL, Upton, Long Island, New York, USA D. Stratakis, M.J. Syphers Fermilab, Batavia, Illinois, USA M.J. Syphers Northern Illinois University, DeKalb, Illinois, USA
	Fermilab's Muon g-2 experiment aims to measure the anomalous magnetic moment of the muon to an unprecedented precision of 140 ppb. It relies on large numbers of muons surviving many turns in the storage ring without colliding with the sides, at least long enough for the muons to decay. Longitudinal ionization cooling is introduced with respect to Fermilab's Muon g-2 experiment in an attempt to increase storage and through this the statistics and quality of results. The ionization cooling is introduced to the beam through a material wedge, an initial simulation study is made into the positioning, material, and geometrical parameters of this wedge using G4Beamline. Results suggest a significant increase of 20 - 30% in the number of stored muons when the optimal wedge is included in the simulation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPMK015
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TUPMK016	Using Time Evolution of the Bunch Structure to Extract the Muon Momentum Distribution in the Fermilab Muon g-2 Experiment	1526
	W. Wu, B. Quinn UMiss, University, Mississippi, USA J.D. Crnkovic BNL, Upton, Long Island, New York, USA
	Beam dynamics plays an important role in achieving the unprecedented precision on measurement of the muon anomalous magnetic moment in the Fermilab Muon g-2 Experiment. It needs to find the muon momentum distribution in the storage ring in order to evaluate the electric field correction to muon anomalous precession frequency. We will show how to use time evolution of the beam bunch structure to extract the muon momentum distribution by applying a fast rotation analysis on the decay electron signals.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPMK016
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WEPAF014	Commissioning the Superconducting Magnetic Inflector System for the Muon g-2 Experiment	1844
	N.S. Froemming CENPA, Seattle, Washington, USA K.E. Badgley, H. Nguyen, D. Stratakis Fermilab, Batavia, Illinois, USA J.D. Crnkovic BNL, Upton, Long Island, New York, USA L.E. Kelton UKY, Kentucky, USA M.J. Syphers Northern Illinois University, DeKalb, Illinois, USA
	The Fermilab muon g-2 experiment aims to measure the muon anomalous magnetic moment with a precision of 140 ppb - a fourfold improvement over the 540 ppb precision obtained in the BNL muon g-2 experiment. Both of these high-precision experiments require an extremely uniform magnetic field in the muon storage ring. A superconducting magnetic inflector system is used to inject beam into the storage ring as close as possible to the design orbit while minimizing disturbances to the storage-region magnetic field. The Fermilab experiment is currently in its first data-taking run, where the Fermilab inflector system is the refurbished BNL inflector system. This discussion reviews the Fermilab inflector system refurbishment and commissioning.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF014
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WEPAF015	Commissioning the Muon g-2 Experiment Electrostatic Quadrupole System	1848
	J.D. Crnkovic, V. Tishchenko BNL, Upton, Long Island, New York, USA K.E. Badgley, H. Nguyen, E. Ramberg Fermilab, Batavia, Illinois, USA E. Barlas Yucel, M. Yucel Istanbul Technical University, Maslak, Istanbul, Turkey J.M. Grange ANL, Argonne, Illinois, USA A.T. Herrod Cockcroft Institute, Warrington, Cheshire, United Kingdom A.T. Herrod The University of Liverpool, Liverpool, United Kingdom J.L. Holzbauer, W. Wu UMiss, University, Mississippi, USA H.D. Sanders APP, Freeville, New York, USA H.D. Sanders Sanders Pulsed Power LLC, Batavia, Illinois, USA N.H. Tran BUphy, Boston, Massachusetts, USA
	The Fermilab Muon g-2 experiment aims to measure the muon anomaly with a precision of 140 parts-per-billion (ppb) - a fourfold improvement over the 540 ppb precision obtained by the BNL Muon g-2 experiment. These high precision experiments both require a very uniform muon storage ring magnetic field that precludes the use of vertical-focusing magnetic quadrupoles. The Fermilab Electrostatic Quadrupole System (EQS) is the refurbished and upgraded BNL EQS, where this overview describes the Fermilab EQS and its recent operations.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF015
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WEPAF016	Application of Quad-Scan Measurement Techniques to Muon Beams in the Muon g-2 Experiment	1852
	J. Bradley Edinburgh University, Edinburgh, United Kingdom J.D. Crnkovic BNL, Upton, Long Island, New York, USA B.E. Drendel, D. Stratakis Fermilab, Batavia, Illinois, USA N.S. Froemming CENPA, Seattle, Washington, USA
	Determination of the properties of a beam during transport is a vital process for most accelerator-related experiments; for example Fermilab's Muon g-2 experiment requires large numbers of muons to be stored in a storage ring of 7 meter radius, and the transmission fraction has been shown to depend strongly on the properties of the beam, specifically the Twiss parameters. The current equipment in the muon campus beamlines allows only measurement of beam profiles which limits how well propagation can be predicted, however by using the well-studied quad-scan technique it is possible to obtain all of the Twiss parameters at a point using these profiles. Experimental quad-scans of muon beams have not yet been reported, this paper introduces the quad-scan technique and then goes on to discuss the analysis of one such experiment and the results obtained, showing that such a technique is applicable in the muon g-2 experiment to obtain the Twiss parameters without requiring installation of new equipment.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF016
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THPAK139	Lost Muon Studies for the Muon g-2 Experiment at Fermilab	3573
	S. Ganguly, K. T. Pitts University of Illinois at Urbana-Champaign, Urbana, USA J.D. Crnkovic BNL, Upton, Long Island, New York, USA C. C. Polly Fermilab, Batavia, Illinois, USA
	The Fermilab Muon g-2 experiment aims to measure the muon anomalous magnetic moment aμ with an unprecedented precision of 140 parts per billion (ppb), a four-fold improvement over the 540~ppb precision obtained by the BNL Muon g-2 Experiment. This study presents preliminary work on estimating the muon losses by using double coincidences in the calorimeters.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPAK139
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FRXGBE2	Muon Beam Dynamics and Spin Dynamics in the g-2 Storage Ring	5029
	D. L. Rubin, A.T. Chapelain Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA S. Charity, J. Price The University of Liverpool, Liverpool, United Kingdom J.D. Crnkovic, W. Morse, V. Tishchenko BNL, Upton, Long Island, New York, USA F.E. Gray Regis University, Denver, USA J. E. Mott BUphy, Boston, Massachusetts, USA W. Wu UMiss, University, Mississippi, USA
	Funding: This work was supported in part by the U.S. Department of Energy DOE HEP DE-SC0008037 The goal of the new g-2 experiment at fermilab is a measurement of the anomalous magnetic moment of the muon, with uncertainty of less than 140 ppb. The experimental method is to store a beam of polarized muons in a storage ring with pure vertical dipole field and electrostatic focusing, and to measure the precession frequency. Control of the systematics depends on unprecedented knowledge of the details of the phase space of the muon distribution. That knowledge is derived from direct measurements with scintillating fiber detectors that are inserted into the muon beam for diagnostic measurements, traceback straw tube tracking chambers, as well as the calorimeters that measure energy, time and position of the decay positrons. The interpretation of the measurements depends on a detailed model of the storage ring guide field. This invited talk presents results of studies of the distribution from the commissioning run of the experiment.
	Slides FRXGBE2 [12.809 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-FRXGBE2
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Paper

Title

Page

Initial Studies into Longitudinal Ionization Cooling for the Muon g-2 Experiment

1522

J. Bradley
Edinburgh University, Edinburgh, United Kingdom
J.D. Crnkovic
BNL, Upton, Long Island, New York, USA
D. Stratakis, M.J. Syphers
Fermilab, Batavia, Illinois, USA
M.J. Syphers
Northern Illinois University, DeKalb, Illinois, USA

Fermilab's Muon g-2 experiment aims to measure the anomalous magnetic moment of the muon to an unprecedented precision of 140 ppb. It relies on large numbers of muons surviving many turns in the storage ring without colliding with the sides, at least long enough for the muons to decay. Longitudinal ionization cooling is introduced with respect to Fermilab's Muon g-2 experiment in an attempt to increase storage and through this the statistics and quality of results. The ionization cooling is introduced to the beam through a material wedge, an initial simulation study is made into the positioning, material, and geometrical parameters of this wedge using G4Beamline. Results suggest a significant increase of 20 - 30% in the number of stored muons when the optimal wedge is included in the simulation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPMK015

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPMK016

Using Time Evolution of the Bunch Structure to Extract the Muon Momentum Distribution in the Fermilab Muon g-2 Experiment

1526

W. Wu, B. Quinn
UMiss, University, Mississippi, USA
J.D. Crnkovic
BNL, Upton, Long Island, New York, USA

Beam dynamics plays an important role in achieving the unprecedented precision on measurement of the muon anomalous magnetic moment in the Fermilab Muon g-2 Experiment. It needs to find the muon momentum distribution in the storage ring in order to evaluate the electric field correction to muon anomalous precession frequency. We will show how to use time evolution of the beam bunch structure to extract the muon momentum distribution by applying a fast rotation analysis on the decay electron signals.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPMK016

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPAF014

Commissioning the Superconducting Magnetic Inflector System for the Muon g-2 Experiment

1844

N.S. Froemming
CENPA, Seattle, Washington, USA
K.E. Badgley, H. Nguyen, D. Stratakis
Fermilab, Batavia, Illinois, USA
J.D. Crnkovic
BNL, Upton, Long Island, New York, USA
L.E. Kelton
UKY, Kentucky, USA
M.J. Syphers
Northern Illinois University, DeKalb, Illinois, USA

The Fermilab muon g-2 experiment aims to measure the muon anomalous magnetic moment with a precision of 140 ppb - a fourfold improvement over the 540 ppb precision obtained in the BNL muon g-2 experiment. Both of these high-precision experiments require an extremely uniform magnetic field in the muon storage ring. A superconducting magnetic inflector system is used to inject beam into the storage ring as close as possible to the design orbit while minimizing disturbances to the storage-region magnetic field. The Fermilab experiment is currently in its first data-taking run, where the Fermilab inflector system is the refurbished BNL inflector system. This discussion reviews the Fermilab inflector system refurbishment and commissioning.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF014

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WEPAF015

Commissioning the Muon g-2 Experiment Electrostatic Quadrupole System

1848

J.D. Crnkovic, V. Tishchenko
BNL, Upton, Long Island, New York, USA
K.E. Badgley, H. Nguyen, E. Ramberg
Fermilab, Batavia, Illinois, USA
E. Barlas Yucel, M. Yucel
Istanbul Technical University, Maslak, Istanbul, Turkey
J.M. Grange
ANL, Argonne, Illinois, USA
A.T. Herrod
Cockcroft Institute, Warrington, Cheshire, United Kingdom
A.T. Herrod
The University of Liverpool, Liverpool, United Kingdom
J.L. Holzbauer, W. Wu
UMiss, University, Mississippi, USA
H.D. Sanders
APP, Freeville, New York, USA
H.D. Sanders
Sanders Pulsed Power LLC, Batavia, Illinois, USA
N.H. Tran
BUphy, Boston, Massachusetts, USA

The Fermilab Muon g-2 experiment aims to measure the muon anomaly with a precision of 140 parts-per-billion (ppb) - a fourfold improvement over the 540 ppb precision obtained by the BNL Muon g-2 experiment. These high precision experiments both require a very uniform muon storage ring magnetic field that precludes the use of vertical-focusing magnetic quadrupoles. The Fermilab Electrostatic Quadrupole System (EQS) is the refurbished and upgraded BNL EQS, where this overview describes the Fermilab EQS and its recent operations.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF015

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPAF016

Application of Quad-Scan Measurement Techniques to Muon Beams in the Muon g-2 Experiment

1852

J. Bradley
Edinburgh University, Edinburgh, United Kingdom
J.D. Crnkovic
BNL, Upton, Long Island, New York, USA
B.E. Drendel, D. Stratakis
Fermilab, Batavia, Illinois, USA
N.S. Froemming
CENPA, Seattle, Washington, USA

Determination of the properties of a beam during transport is a vital process for most accelerator-related experiments; for example Fermilab's Muon g-2 experiment requires large numbers of muons to be stored in a storage ring of 7 meter radius, and the transmission fraction has been shown to depend strongly on the properties of the beam, specifically the Twiss parameters. The current equipment in the muon campus beamlines allows only measurement of beam profiles which limits how well propagation can be predicted, however by using the well-studied quad-scan technique it is possible to obtain all of the Twiss parameters at a point using these profiles. Experimental quad-scans of muon beams have not yet been reported, this paper introduces the quad-scan technique and then goes on to discuss the analysis of one such experiment and the results obtained, showing that such a technique is applicable in the muon g-2 experiment to obtain the Twiss parameters without requiring installation of new equipment.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPAF016

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPAK139

Lost Muon Studies for the Muon g-2 Experiment at Fermilab

3573

S. Ganguly, K. T. Pitts
University of Illinois at Urbana-Champaign, Urbana, USA
J.D. Crnkovic
BNL, Upton, Long Island, New York, USA
C. C. Polly
Fermilab, Batavia, Illinois, USA

The Fermilab Muon g-2 experiment aims to measure the muon anomalous magnetic moment aμ with an unprecedented precision of 140 parts per billion (ppb), a four-fold improvement over the 540~ppb precision obtained by the BNL Muon g-2 Experiment. This study presents preliminary work on estimating the muon losses by using double coincidences in the calorimeters.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPAK139

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRXGBE2

Muon Beam Dynamics and Spin Dynamics in the g-2 Storage Ring

5029

D. L. Rubin, A.T. Chapelain
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
S. Charity, J. Price
The University of Liverpool, Liverpool, United Kingdom
J.D. Crnkovic, W. Morse, V. Tishchenko
BNL, Upton, Long Island, New York, USA
F.E. Gray
Regis University, Denver, USA
J. E. Mott
BUphy, Boston, Massachusetts, USA
W. Wu
UMiss, University, Mississippi, USA

Funding: This work was supported in part by the U.S. Department of Energy DOE HEP DE-SC0008037
The goal of the new g-2 experiment at fermilab is a measurement of the anomalous magnetic moment of the muon, with uncertainty of less than 140 ppb. The experimental method is to store a beam of polarized muons in a storage ring with pure vertical dipole field and electrostatic focusing, and to measure the precession frequency. Control of the systematics depends on unprecedented knowledge of the details of the phase space of the muon distribution. That knowledge is derived from direct measurements with scintillating fiber detectors that are inserted into the muon beam for diagnostic measurements, traceback straw tube tracking chambers, as well as the calorimeters that measure energy, time and position of the decay positrons. The interpretation of the measurements depends on a detailed model of the storage ring guide field. This invited talk presents results of studies of the distribution from the commissioning run of the experiment.

Slides FRXGBE2 [12.809 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-FRXGBE2

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)