High intensity proton acceleration at the Brookhaven AGS-an update

Ahrens, L.; Alessi, J.; Blaskiewicz, M.; Bleser, E.; Brennan, J.M.; Brown, K.; Gardner, C.; Glenn, J.W.; Huang, H.; Reece, Kimberly S.; Roser, T.; Asselt, W. van; Zeno, K.; Zhang, S.Y.

doi:10.1109/pac.1997.749553

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…This is due to the highly distorted dispersion function created by the fast quadrupoles, which defines the momentum aperture. [8] Our experiences with extracting high intensity protons has been discussed previously in [4]. In this report we will provide an update on our experiences since that report.…”

Section: Introductionmentioning

confidence: 86%

Status of slow extraction of high intensity protons from brookhaven's AGS

Brown

Ahrens

Brennan

et al.

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

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The Brookhaven AGS third integer resonant extraction system allows the AGS to provide high quality, high intensity 25.5 GeVlc proton beams simultaneously to four target stations and as many as 8 experiments. With the increasing intensities (over 7 x 1013 protons/pulse) and associated longer spill periods (2.4 to 3 seconds long), we continue to run with low losses and high quality low modulation continuous current beams. We have an active program of high energy physics experiments, including the high precision measurement of the muons magnetic moment [l] and the discovery of the rare Kaon decay, K+ 4 T + vii [2] This program is continuing into the future with the rare symmetry violating process experiments [3] currently being designed to operate at the AGS. In this paper we will present results from operation of high intensity slow extraction, the problems we encounter, and our solutions to those problems.

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Section: Introductionmentioning

confidence: 86%

Status of slow extraction of high intensity protons from brookhaven's AGS

Brown

Ahrens

Brennan

et al.

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440)

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“…This is due to the highly distorted dispersion function created by the fast quadrupoles, which defines the momentum aperture. [6] Among other changes, we have moved the locations of the drive sextupoles used to create the 26/3 resonance for SEB extraction. This changed the orientation of the separatrix at the electrostatic and the magnetic septums in the AGS, but only slightly.…”

Section: Introductionmentioning

confidence: 99%

AGS resonant extraction with high intensity beams

Ahrens

Brown

Glenn³

et al.

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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The Brookhaven AGS third integer resonant extraction system allows the AGS to provide high quality, high intensity 25.5 GeV/c proton beams simultaneously to four target stations and as many as 8 experiments. With the increasing intensities (over 7x10 13 protons/pulse) and associated longer spill periods (2.4 to 3 seconds long), we continue to run with low losses and high quality low modulation continuous current beams.[1] Learning to extract and transport these higher intensity beams has required a process of careful modeling and experimentation. We have had to learn how to correct for various instabilities and how to better match extraction and the transport lines to the higher emittance beams being accelerated in the AGS. Techniques employed include "RF" methods to smooth out momentum distributions and fine structure. We will present results of detailed multi-particle tracking modeling studies which enabled us to develop a clear understanding of beam loss mechanisms in the transport and extraction process. We will report on our status, experiences, and the present understanding of the intensity limitations imposed by resonant extraction and transport to fixed target stations.

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High intensity proton acceleration at the Brookhaven AGS-an update

Cited by 2 publications

References 5 publications

Status of slow extraction of high intensity protons from brookhaven's AGS

Status of slow extraction of high intensity protons from brookhaven's AGS

AGS resonant extraction with high intensity beams

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