IBIC2017 - List of Authors (Blokland, W.)

Paper	Title	Page
WE3AB3	Commissioning and First Results of the Electron Beam Profiler in the Main Injector at Fermilab	330
	R.M. Thurman-Keup, M.L. Alvarez, J. Fitzgerald, C.E. Lundberg, P.S. Prieto, J.R. Zagel Fermilab, Batavia, Illinois, USA W. Blokland ORNL, Oak Ridge, Tennessee, USA
	The planned neutrino program at Fermilab requires large proton beam intensities in excess of 2 MW. Measuring the transverse profiles of these high intensity beams is challenging and often depends on non-invasive techniques. One such technique involves measuring the deflection of a probe beam of electrons with a trajectory perpendicular to the proton beam. A device such as this is already in use at the Spallation Neutron Source at ORNL and a similar device has been installed in the Main Injector at Fermilab. Commissioning of the device is in progress with the goal of having it operational by the end of the year. The status of the commissioning and initial results will be presented.
	Slides WE3AB3 [2.077 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE3AB3
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WEPCC14	A Study of the Effect of Imperfections in the Optical Path of the SNS* Target Imaging System Using a Mock-up	384
	W. Blokland ORNL, Oak Ridge, Tennessee, USA F.G. Garcia UTK, Knoxville, Tennessee, USA
	Funding: * This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC0500OR22725 with the U.S. Department of Energy. The Spallation Neutron Source sends a 1 GeV proton beam to a mercury filled target to generate neutrons. The Target Imaging System (TIS) provides an image of this proton beam on the target to help center the beam and determine the peak density. Most of the TIS optical path is installed together with the proton beam window, which is replaced every two to three years. Using the next-to-be-installed proton beam window and a mock-up of the target and the beam pipe to the target, we have studied imperfections in the optical path to estimate their effect on the TIS measurements. In this paper, we show the effect of geometric distortion and light reflections, as well as the difference in the performance of two optical fiber bundles with different resolutions and contrasts.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC14
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TH2AB1	Minimizing Errant Beam at the Spallation Neutron Source	491
	C.C. Peters, T.B. Southern ORNL RAD, Oak Ridge, Tennessee, USA W. Blokland, T.A. Justice ORNL, Oak Ridge, Tennessee, USA
	Over the years SNS has been optimizing the amount of errant beam pulses in the accelerator. The errant beam pulses can damage the superconducting cavities and thus lower the uptime of the accelerator. This talk will present the effort that has been made to lower the amount of errant beam pulses with new diagnostics, analysis of processes that cause errant beam, and the resulting lessons learned.
	Slides TH2AB1 [43.164 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB1
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Commissioning and First Results of the Electron Beam Profiler in the Main Injector at Fermilab

330

R.M. Thurman-Keup, M.L. Alvarez, J. Fitzgerald, C.E. Lundberg, P.S. Prieto, J.R. Zagel
Fermilab, Batavia, Illinois, USA
W. Blokland
ORNL, Oak Ridge, Tennessee, USA

The planned neutrino program at Fermilab requires large proton beam intensities in excess of 2 MW. Measuring the transverse profiles of these high intensity beams is challenging and often depends on non-invasive techniques. One such technique involves measuring the deflection of a probe beam of electrons with a trajectory perpendicular to the proton beam. A device such as this is already in use at the Spallation Neutron Source at ORNL and a similar device has been installed in the Main Injector at Fermilab. Commissioning of the device is in progress with the goal of having it operational by the end of the year. The status of the commissioning and initial results will be presented.

Slides WE3AB3 [2.077 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WE3AB3

Export •

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

WEPCC14

A Study of the Effect of Imperfections in the Optical Path of the SNS* Target Imaging System Using a Mock-up

384

W. Blokland
ORNL, Oak Ridge, Tennessee, USA
F.G. Garcia
UTK, Knoxville, Tennessee, USA

Funding: * This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC0500OR22725 with the U.S. Department of Energy.
The Spallation Neutron Source sends a 1 GeV proton beam to a mercury filled target to generate neutrons. The Target Imaging System (TIS) provides an image of this proton beam on the target to help center the beam and determine the peak density. Most of the TIS optical path is installed together with the proton beam window, which is replaced every two to three years. Using the next-to-be-installed proton beam window and a mock-up of the target and the beam pipe to the target, we have studied imperfections in the optical path to estimate their effect on the TIS measurements. In this paper, we show the effect of geometric distortion and light reflections, as well as the difference in the performance of two optical fiber bundles with different resolutions and contrasts.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC14

Export •

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

TH2AB1

Minimizing Errant Beam at the Spallation Neutron Source

491

C.C. Peters, T.B. Southern
ORNL RAD, Oak Ridge, Tennessee, USA
W. Blokland, T.A. Justice
ORNL, Oak Ridge, Tennessee, USA

Over the years SNS has been optimizing the amount of errant beam pulses in the accelerator. The errant beam pulses can damage the superconducting cavities and thus lower the uptime of the accelerator. This talk will present the effort that has been made to lower the amount of errant beam pulses with new diagnostics, analysis of processes that cause errant beam, and the resulting lessons learned.

Slides TH2AB1 [43.164 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB1

Export •

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