IPAC2016 - List of Authors (Adamson, P.)

Paper	Title	Page
MOPOY010	Simulations and Measurements of Stopbands in the Fermilab Recycler	864
	R. Ainsworth, P. Adamson, K.J. Hazelwood, I. Kourbanis, E.G. Stern Fermilab, Batavia, Illinois, USA
	Fermilab has recently completed an upgrade to the complex with the goal of delivering 700 kW of beam power as 120 GeV protons to the NuMI target. A major part of boosting beam power is to use the Fermilab Recycler to stack protons. Simulations focusing on the betatron resonance stopbands are presented taking into account different effects such as intensity and chromaticity. Simulations are compared with measurements.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY010
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MOPOY011	Estimating the Transverse Impedance in the Fermilab Recycler	867
	R. Ainsworth, P. Adamson, A.V. Burov, I. Kourbanis, M.-J. Yang Fermilab, Batavia, Illinois, USA
	Impedance could represent a limitation of running high intensity bunches in the Fermilab recycler. With high intensity upgrades foreseen, it is important to quantify the impedance. To do this, studies have been performed measuring the tune shift as a function of bunch intensity allowing the transverse impedance to be derived.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY011
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MOPOY012	Space Charge Simulations in the Fermilab Recycler for PIP-II	870
	R. Ainsworth, P. Adamson, I. Kourbanis, E.G. Stern Fermilab, Batavia, Illinois, USA
	Proton Improvement Plan-II (PIP-II) is Fermilab's plan for providing powerful, high-intensity proton beams to the laboratory's experiments. Upgrades are foreseen for the recycler which will cope with bunches containing fifty percent more beam. Of particular concern is large space charge tune shifts caused by the intensity increase. Simulations performed using Synergia are detailed focusing on the space charge footprint.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY012
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TUOAA03	Long Term Plans to Increase Fermilab's Proton Intensity to Meet the Needs of the Long Baseline Neutrino Program	1010
	E. Prebys, P. Adamson, S.C. Childress, P. Derwent, S.D. Holmes, I. Kourbanis, V.A. Lebedev, W. Pellico, A. Romanenko, V.D. Shiltsev, E.G. Stern, A. Valishev, R.M. Zwaska Fermilab, Batavia, Illinois, USA
	Funding: This work is supported by the US Department of Energy under contract No. De-AC02-07CH11359. The flagship of Fermilab's long term research program is the Deep Underground Neutrino Experiment (DUNE), located Sanford Underground Research Facility (SURF) in Lead, South Dakota, which will study neutrino oscillations with a baseline of 1300 km. The neutrinos will be produced in the Long Baseline Neutrino Facility (LBNF), a proposed new beam line from Fermilab's Main Injector. The physics goals of the DUNE require a proton beam with a power of roughly 2.5 MW at 120 GeV, which is roughly five times the current maximum power. This poster outlines the staged plan to achieve the required power over the next 15 years.
	Slides TUOAA03 [4.129 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUOAA03
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TUPOR029	Study of Fast Instability in Fermilab Recycler	1728
	S. A. Antipov University of Chicago, Chicago, Illinois, USA P. Adamson, S. Nagaitsev, M.-J. Yang Fermilab, Batavia, Illinois, USA
	One of the factors which may limit the intensity in the Fermilab Recycler is a fast transverse instability. It develops within a hundred turns and, in certain conditions, may lead to a beam loss. Various peculiar features of the instability: its occurrence only above a certain intensity threshold, and only in horizontal plane, as well as the rate of the instability, suggest that its cause is electron cloud. We studied the phenomena by observing the dynamics of stable and unstable beam. We found that beam motion can be stabilized by a clearing bunch, which confirms the electron cloud nature of the instability. The findings suggest electron cloud trapping in Recycler combined function mag-nets. Bunch-by-bunch measurements of betatron tune show a tune shift towards the end of the bunch train and allow the estimation of the density of electron cloud and the rate of its build-up. The experimental results are in agreement with numerical simulations of electron cloud build-up and its interaction with the beam.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR029
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Paper

Title

Page

Simulations and Measurements of Stopbands in the Fermilab Recycler

864

R. Ainsworth, P. Adamson, K.J. Hazelwood, I. Kourbanis, E.G. Stern
Fermilab, Batavia, Illinois, USA

Fermilab has recently completed an upgrade to the complex with the goal of delivering 700 kW of beam power as 120 GeV protons to the NuMI target. A major part of boosting beam power is to use the Fermilab Recycler to stack protons. Simulations focusing on the betatron resonance stopbands are presented taking into account different effects such as intensity and chromaticity. Simulations are compared with measurements.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY010

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

MOPOY011

Estimating the Transverse Impedance in the Fermilab Recycler

867

R. Ainsworth, P. Adamson, A.V. Burov, I. Kourbanis, M.-J. Yang
Fermilab, Batavia, Illinois, USA

Impedance could represent a limitation of running high intensity bunches in the Fermilab recycler. With high intensity upgrades foreseen, it is important to quantify the impedance. To do this, studies have been performed measuring the tune shift as a function of bunch intensity allowing the transverse impedance to be derived.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY011

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

MOPOY012

Space Charge Simulations in the Fermilab Recycler for PIP-II

870

R. Ainsworth, P. Adamson, I. Kourbanis, E.G. Stern
Fermilab, Batavia, Illinois, USA

Proton Improvement Plan-II (PIP-II) is Fermilab's plan for providing powerful, high-intensity proton beams to the laboratory's experiments. Upgrades are foreseen for the recycler which will cope with bunches containing fifty percent more beam. Of particular concern is large space charge tune shifts caused by the intensity increase. Simulations performed using Synergia are detailed focusing on the space charge footprint.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY012

Export •

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

TUOAA03

Long Term Plans to Increase Fermilab's Proton Intensity to Meet the Needs of the Long Baseline Neutrino Program

1010

E. Prebys, P. Adamson, S.C. Childress, P. Derwent, S.D. Holmes, I. Kourbanis, V.A. Lebedev, W. Pellico, A. Romanenko, V.D. Shiltsev, E.G. Stern, A. Valishev, R.M. Zwaska
Fermilab, Batavia, Illinois, USA

Funding: This work is supported by the US Department of Energy under contract No. De-AC02-07CH11359.
The flagship of Fermilab's long term research program is the Deep Underground Neutrino Experiment (DUNE), located Sanford Underground Research Facility (SURF) in Lead, South Dakota, which will study neutrino oscillations with a baseline of 1300 km. The neutrinos will be produced in the Long Baseline Neutrino Facility (LBNF), a proposed new beam line from Fermilab's Main Injector. The physics goals of the DUNE require a proton beam with a power of roughly 2.5 MW at 120 GeV, which is roughly five times the current maximum power. This poster outlines the staged plan to achieve the required power over the next 15 years.

Slides TUOAA03 [4.129 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUOAA03

Export •

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

TUPOR029

Study of Fast Instability in Fermilab Recycler

1728

S. A. Antipov
University of Chicago, Chicago, Illinois, USA
P. Adamson, S. Nagaitsev, M.-J. Yang
Fermilab, Batavia, Illinois, USA

One of the factors which may limit the intensity in the Fermilab Recycler is a fast transverse instability. It develops within a hundred turns and, in certain conditions, may lead to a beam loss. Various peculiar features of the instability: its occurrence only above a certain intensity threshold, and only in horizontal plane, as well as the rate of the instability, suggest that its cause is electron cloud. We studied the phenomena by observing the dynamics of stable and unstable beam. We found that beam motion can be stabilized by a clearing bunch, which confirms the electron cloud nature of the instability. The findings suggest electron cloud trapping in Recycler combined function mag-nets. Bunch-by-bunch measurements of betatron tune show a tune shift towards the end of the bunch train and allow the estimation of the density of electron cloud and the rate of its build-up. The experimental results are in agreement with numerical simulations of electron cloud build-up and its interaction with the beam.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR029

Export •

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