A Modulated Fast Bump for the CPS Continuous Transfer

Fiander, D.C.; Grier, David G.; Metzmacher, K D; Pearce, P.

doi:10.1109/tns.1977.4328938

Cited by 9 publications

(6 citation statements)

References 1 publication

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“…Since the 1970s, the proton beam delivered by the CERN Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS) for fixed-target physics has been based on the socalled continuous transfer (CT) [1,2]. This peculiar extraction mode was implemented to extract the proton beam over five PS turns, so that with two subsequent extractions from the PS, ten elevenths of the SPS circumference can be filled.…”

Section: Introductionmentioning

confidence: 99%

Operational performance of the CERN injector complex with transversely split beams

Abernethy

Akroh

Bartosik

et al. 2017

Phys. Rev. Accel. Beams

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With the progress made in 2015, the beams produced by the CERN Proton Synchrotron using multiturn extraction (MTE) have been delivered to the Super Proton Synchrotron (SPS) for the fixed-target physics run. Operation successfully started in the second half of September 2015 and continued until the end of the proton physics program by mid November. In this paper the overall performance and beam quality is discussed in detail considering the complete chain of accelerators, from the PS-Booster to the SPS. Moreover, a thorough comparison of the global performance of the MTE scheme against the previously used technique, the so-called continuous transfer (CT), is also carried out.

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Section: Introductionmentioning

confidence: 99%

Operational performance of the CERN injector complex with transversely split beams

Abernethy

Akroh

Bartosik

et al. 2017

Phys. Rev. Accel. Beams

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show abstract

“…Efforts to find a suitable replacement for the continuous transfer (CT) extraction mode [1,2], which has been the technique used to transfer the 14 GeV=c proton beams from the CERN Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS) for the fixed-target physics programme, converged on the proposal of a novel method of beam manipulation named multiturn extraction (MTE) [3]. This technique is based on transverse beam splitting induced by crossing a stable resonance in the horizontal phase space and solves the issue related to the unavoidable beam losses of the CT extraction [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of space charge effects on the positions of beamlets for transversely split beams

Machida¹,

Prior

Gilardoni

et al. 2017

Phys. Rev. Accel. Beams

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The use of transversely split beams was proposed some years ago as a means to perform extraction from a circular particle accelerator over multiple turns. In the course of studies carried out to increase understanding of the beam behavior, space charge effects have been probed. The experimental results showed a dependence of the beamlets' positions on the total beam intensity. In this paper detailed numerical simulations studies are reported, which clearly indicate that the observed behavior is due to indirect space charge effects. The analysis includes configurations, which have not yet been experimentally probed, in order to better understand the complex interplay between nonlinear single-particle and intensity-dependent effects.

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“…Introduction. -Since the introduction of the Multi-Turn Extraction (MTE) as an operational beam manipulation in the CERN Proton Synchrotron (PS), the losses of high-intensity proton beams delivered to the fixed-target physics facilities at the CERN Super Proton Synchrotron (SPS) have been greatly reduced [1][2][3][4][5] with respect to the previously applied Continuous Transfer (CT) extraction method [6,7]. MTE is a technique based on beam splitting in the transverse horizontal plane by means of trapping particles into stable resonance islands generated by non-linear magnetic fields, such as sextupoles and octupoles [1,8,9].…”

mentioning

confidence: 99%

Barrier bucket and transversely split beams for loss-free multi-turn extraction in synchrotrons

Vadai

Alomainy

Damerau

et al. 2019

EPL

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A special radio-frequency manipulation has been studied and successfully implemented at the CERN Proton Synchrotron for the first time. This technique aims at depleting a well-defined fraction of a continuous longitudinal beam distribution by creating a so-called barrier bucket. In addition to the intrinsic interest for its originality, this approach has an immediate application at CERN in combination with the Multi-Turn Extraction scheme. The combination of these two exotic techniques into a single, highly sophisticated process allows to dramatically reduce the beam loss at PS extraction, thus opening the door to the production of high-intensity proton beams for future fixed-target experiments at the CERN Super Proton Synchrotron.

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A Modulated Fast Bump for the CPS Continuous Transfer

Cited by 9 publications

References 1 publication

Operational performance of the CERN injector complex with transversely split beams

Operational performance of the CERN injector complex with transversely split beams

Numerical investigation of space charge effects on the positions of beamlets for transversely split beams

Barrier bucket and transversely split beams for loss-free multi-turn extraction in synchrotrons

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