Single bunch intensity monitoring system using an improved wall current monitor

Moore, C. D.; Crisp, J.; Howard, David M.; Kerns, Q.; Martin, P.S.; McConnell, Dennis B.; Michals, P.; Payne, J.; Tawzer, S.; Webber, R.

doi:10.1109/pac.1989.73497

Cited by 17 publications

(8 citation statements)

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“…During the data taking period the accelerator operators made periodic measurements of accelerator parameters with flying wires [9] and wallcurrent monitors [10] to enable a calculation of our luminosity as a function of time. A careful analysis of the luminosity data was subsequently tabulated by Gelfand, Grosso-Pilcher, and White [11,12] and made available to experimentalists.…”

Section: Discussionmentioning

confidence: 99%

Simple Behavior of Primary Cross Sections for Low Mass Particles in p-pbar Collisions at y=0 and sqrt(s)=1.8 TeV

Alexopoulos,

Anderson,

Carmony

et al. 2009

Preprint

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A set of inclusive cross sections at zero rapidity, dσ/dy|y=0, is presented for pp interactions at center of mass energy √ s = 1.8 TeV. Six elementary particle cross sections are corrected for secondary contributions from decays of higher mass resonances in order to produce a set of primary cross sections. The primary cross sections per spin state are well described by dσ p /dy|y=0 = 0.721, where m is the particle rest mass, T = hc/r h , and r h = 0.97 fm. The deuterium production cross section is also described if r h is replaced by rA = r h A 1/3 . The same exponential in m and T describes primary charm fractions in e + e − collisions at least up to the J/ψ mass. There is no significant evidence for strangeness or charm suppression if only primary production of light hadrons is considered. There is evidence that the primary cross section for each particle may have the same value for pp and pp collisions and that it may have nearly constant values between √ s = 63GeV and √ s = 1800 GeV. Fits to the final state transverse momenta of the particles using a gas model favor a temperature T=132 MeV, a chemical potential µ = 129 MeV, and a transverse flow of the gas with β f = 0.27.

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Section: Discussionmentioning

confidence: 99%

Simple Behavior of Primary Cross Sections for Low Mass Particles in p-pbar Collisions at y=0 and sqrt(s)=1.8 TeV

Alexopoulos,

Anderson,

Carmony

et al. 2009

Preprint

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“…These techniques are, of course, applicable also to signals from current monitors in circular machines. 29 All result in direct time domain representations of bunch shapes.…”

Section: Bunch Shape and Time Distribution Measurementsmentioning

confidence: 99%

Longitudinal emittance: An introduction to the concept and survey of measurement techniques including design of a wall current monitor

Webber¹

1990

AIP Conference Proceedings

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The properties of charged particle beams associated with the distribution of the particles in energy and in time can be grouped together under the category of longitudinal emittance. This article is intended to provide an intuitive introduction to the concepts of longitudinal emittance; to provide an incomplete survey of methods used to measure this emittance and the related properties of bunch length and momentum spread; and to describe the detailed design of a 6 Ghz bandwidth resistive wall current monitor useful for measuring bunch shapes of moderate to high intensity beams. Overall, the article is intended to be broad in scope, in most cases deferring details to cited original papers.

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“…The bunch length measurement from a mountain range photograph is unsuitable, because the measurement is not clear or real time. The bunch length is also measured from a stored bunch shape using a computer [4].…”

Section: Futroductionmentioning

confidence: 99%

A Main Ring bunch length monitor by detecting two frequency components of the beam

Ieiri¹,

Jackson²

1989

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The bunch length is measured by detecting two revolution frequency harmonics of the beam and taking the ratio of their amplitudes. Two heterodyne receivers have been made to detect them, one at 53MHz and the other at 159MHz. These signals are picked-up by a stripline detector. An analog circuit provides a signal proportional to the bunch length. The monitor measures variation of the bunch length as a function of time in the Main Ring. The measured signal, which sometimes shows that the bunches are tumbling in phase space, can be damped by feedback to the RF amplitude modulator.

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Single bunch intensity monitoring system using an improved wall current monitor

Cited by 17 publications

References 0 publications

Simple Behavior of Primary Cross Sections for Low Mass Particles in p-pbar Collisions at y=0 and sqrt(s)=1.8 TeV

Simple Behavior of Primary Cross Sections for Low Mass Particles in p-pbar Collisions at y=0 and sqrt(s)=1.8 TeV

Longitudinal emittance: An introduction to the concept and survey of measurement techniques including design of a wall current monitor

A Main Ring bunch length monitor by detecting two frequency components of the beam

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