2011 Particle Accelerator Conference - List of Authors (Prebys, E.)

Paper	Title	Page
MOP093	Precision Monitoring of Relative Beam Intensity	271
	N.J. Evans, S.E. Kopp The University of Texas at Austin, Austin, Texas, USA E. Prebys Fermilab, Batavia, USA
	Funding: U.S. Department of Energy. For future experiments at the intensity frontier, precise and accurate knowledge of beam time structure will be critical to understanding backgrounds. The proposed Mu2e experiment will utilize ~150nsec (FWHM) bunches of 10⁷ protons at 8 GeV with a bunch-to-bunch period of 1.7 microseconds. The out-of-bunch beam must be suppressed by a factor of 10^-9 relative to in-bunch beam and continuously monitored. I propose a Cerenkov based particle telescope to measure secondary production from beam interactions in a several tens of microns thick foil. Correlating timing information with beam passage allows the determination of relative beam intensity to arbitrary precision given a sufficiently long integration time. The goal is to verify out-of-bunch extinction to the level 10^-6 in the span of several seconds. This allows near real-time monitoring of the initial extinction of the beam slow extracted from Fermilab's Debuncher before a system of AC dipoles and collimators, which will provide the final extinction. The effect on beam emittance is minimal, allowing the necessary continuous measurement. I will present the detector design and results of a test in Fermilab's MI-12 beamline.

WEP045	Measurement and Manipulation of Beta Functions in the Fermilab Booster	1579
	M.J. McAteer, S.E. Kopp The University of Texas at Austin, Austin, Texas, USA E. Prebys Fermilab, Batavia, USA
	In order to meet the needs of Fermilab’s planned post- collider experimental program, the total proton throughput of the 8 GeV Booster accelerator must be nearly doubled within the next two years. A system of 48 ramped corrector magnets has recently been installed in the Booster to help improve efficiency and allow for higher beam intensity without exceeding safe radiation levels. We present the preliminary results of beta function measurements made using these corrector magnets. Our goal is to use the correctors to reduce irregularities in the beta function, and ultimately to introduce localized beta bumps to reduce beam loss or direct losses towards collimators.

Paper

Title

Page

Precision Monitoring of Relative Beam Intensity

271

N.J. Evans, S.E. Kopp
The University of Texas at Austin, Austin, Texas, USA
E. Prebys
Fermilab, Batavia, USA

Funding: U.S. Department of Energy.
For future experiments at the intensity frontier, precise and accurate knowledge of beam time structure will be critical to understanding backgrounds. The proposed Mu2e experiment will utilize ~150nsec (FWHM) bunches of 10⁷ protons at 8 GeV with a bunch-to-bunch period of 1.7 microseconds. The out-of-bunch beam must be suppressed by a factor of 10^-9 relative to in-bunch beam and continuously monitored. I propose a Cerenkov based particle telescope to measure secondary production from beam interactions in a several tens of microns thick foil. Correlating timing information with beam passage allows the determination of relative beam intensity to arbitrary precision given a sufficiently long integration time. The goal is to verify out-of-bunch extinction to the level 10^-6 in the span of several seconds. This allows near real-time monitoring of the initial extinction of the beam slow extracted from Fermilab's Debuncher before a system of AC dipoles and collimators, which will provide the final extinction. The effect on beam emittance is minimal, allowing the necessary continuous measurement. I will present the detector design and results of a test in Fermilab's MI-12 beamline.

WEP045

Measurement and Manipulation of Beta Functions in the Fermilab Booster

1579

M.J. McAteer, S.E. Kopp
The University of Texas at Austin, Austin, Texas, USA
E. Prebys
Fermilab, Batavia, USA

In order to meet the needs of Fermilab’s planned post- collider experimental program, the total proton throughput of the 8 GeV Booster accelerator must be nearly doubled within the next two years. A system of 48 ramped corrector magnets has recently been installed in the Booster to help improve efficiency and allow for higher beam intensity without exceeding safe radiation levels. We present the preliminary results of beta function measurements made using these corrector magnets. Our goal is to use the correctors to reduce irregularities in the beta function, and ultimately to introduce localized beta bumps to reduce beam loss or direct losses towards collimators.