IPAC2019 - List of Authors (Nguyen, T.M.)

Paper	Title	Page
WEPGW106	Statistical Measurement of Longitudinal Beam Halo in Fermilab Recycler	2742
	E. Prebys, T.M. Nguyen UCD, Davis, California, USA A.S. Dyshkant, D. Hedin Northern Illinois University, DeKalb, Illinois, USA A. Gaponenko Fermilab, Batavia, Illinois, USA R.J. Hooper Lewis University, Romeoville, Illinois, USA M. Jones Purdue University, West Lafayette, Indiana, USA
	Funding: This work supported by US Department of Energy Contract DE-AC02-07CH11359 The formation of non-Gaussian halo in both the transverse and longitudinal dimensions of beam bunches has been notoriously difficult both the model and to measure. We present a technique to measure the longitudinal halo of 2.5 MHz bunches in the Fermilab Recycler, which have been formed for the g-2 anomalous magnetic moment experiment. While out of time beam is not a particular concern to this experiment, it is a key issue for the subsequent Mu2e rare muon decay experiment, which will use the same bunch formation procedure. Our measurement relies on a statistical technique, in which a small fraction of the beam is scattered from the primary collimation foil in the recycler, and then is detected by a charge telescope consisting of quartz Cherenkov radiators and photomultiplier tubes. By integrating over many revolutions, the time profile of longitudinal halo (out-of-time beam) can be measured down to less than a 10^-5 fractional level, relative to in-time beam. These results can then be compared to simulations.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPGW106
About •	paper received ※ 15 May 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Statistical Measurement of Longitudinal Beam Halo in Fermilab Recycler

2742

E. Prebys, T.M. Nguyen
UCD, Davis, California, USA
A.S. Dyshkant, D. Hedin
Northern Illinois University, DeKalb, Illinois, USA
A. Gaponenko
Fermilab, Batavia, Illinois, USA
R.J. Hooper
Lewis University, Romeoville, Illinois, USA
M. Jones
Purdue University, West Lafayette, Indiana, USA

Funding: This work supported by US Department of Energy Contract DE-AC02-07CH11359
The formation of non-Gaussian halo in both the transverse and longitudinal dimensions of beam bunches has been notoriously difficult both the model and to measure. We present a technique to measure the longitudinal halo of 2.5 MHz bunches in the Fermilab Recycler, which have been formed for the g-2 anomalous magnetic moment experiment. While out of time beam is not a particular concern to this experiment, it is a key issue for the subsequent Mu2e rare muon decay experiment, which will use the same bunch formation procedure. Our measurement relies on a statistical technique, in which a small fraction of the beam is scattered from the primary collimation foil in the recycler, and then is detected by a charge telescope consisting of quartz Cherenkov radiators and photomultiplier tubes. By integrating over many revolutions, the time profile of longitudinal halo (out-of-time beam) can be measured down to less than a 10^-5 fractional level, relative to in-time beam. These results can then be compared to simulations.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPGW106

About •

paper received ※ 15 May 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019

Export •

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