IPAC2018 - List of Authors (Froemming, N.S.)

Paper	Title	Page
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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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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THPML093	New Fast Kicker Results from the Muon g-2 E-989 Experiment at Fermilab	4879
	A.P. Schreckenberger The University of Texas at Austin, Austin, Texas, USA D. Barak, C.C. Jensen, G.E. Krafczyk, R.L. Madrak, H. Nguyen, H. Pfeffer, M. Popovic, J.C. Stapleton, C. Stoughton Fermilab, Batavia, Illinois, USA A.T. Chapelain, A.A. Mikhailichenko, D. L. Rubin Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA N.S. Froemming CENPA, Seattle, Washington, USA J.L. Holzbauer UMiss, University, Mississippi, USA A.I. Keshavarzi The University of Liverpool, Liverpool, United Kingdom
	We describe the installation, commissioning, and characterization of the injection kicker system for the E-989 experiment at Fermilab for a precision measurement of the muon anomalous magnetic moment. Control and monitoring systems have been implemented to acquire and record the waveforms of each kicker pulse, and measurements of various kicker system observables were recorded in the presence of the 1.45 T g-2 storage ring magnetic field. These monitoring systems are necessary to understand the systematic contribution to the measurement of the precession frequency. We examine the dependence of muon capture to kicker field predictions.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML093
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Paper

Title

Page

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

Export •

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

THPML093

New Fast Kicker Results from the Muon g-2 E-989 Experiment at Fermilab

4879

A.P. Schreckenberger
The University of Texas at Austin, Austin, Texas, USA
D. Barak, C.C. Jensen, G.E. Krafczyk, R.L. Madrak, H. Nguyen, H. Pfeffer, M. Popovic, J.C. Stapleton, C. Stoughton
Fermilab, Batavia, Illinois, USA
A.T. Chapelain, A.A. Mikhailichenko, D. L. Rubin
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
N.S. Froemming
CENPA, Seattle, Washington, USA
J.L. Holzbauer
UMiss, University, Mississippi, USA
A.I. Keshavarzi
The University of Liverpool, Liverpool, United Kingdom

We describe the installation, commissioning, and characterization of the injection kicker system for the E-989 experiment at Fermilab for a precision measurement of the muon anomalous magnetic moment. Control and monitoring systems have been implemented to acquire and record the waveforms of each kicker pulse, and measurements of various kicker system observables were recorded in the presence of the 1.45 T g-2 storage ring magnetic field. These monitoring systems are necessary to understand the systematic contribution to the measurement of the precession frequency. We examine the dependence of muon capture to kicker field predictions.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPML093

Export •

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