Internal targets for monitoring the characteristics of particle beams in synchrotrons

Artemov, A. S.; Afanas'ev, S. V.

doi:10.1134/s1063779606040022

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…The use of injected gas to enhance the fluorescence signal for beam profile monitors in storage rings, heavy ion accelerators, high-energy proton and low-energy deuteron accelerators has been implemented [3][4][5][6][7][8], however, it is a somewhat intrusive beam diagnostic method. Alternatively, a residual gas fluorescence beam profile monitor makes use of the passage of relativistic ion beams in a beam chamber to excite only the residual gas molecules that produce fluorescent light when they return to their ground state.…”

Section: Introductionmentioning

confidence: 99%

Residual gas fluorescence monitor for relativistic heavy ions at RHIC

Tsang

Gassner

Minty

2013

Phys. Rev. ST Accel. Beams

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A residual gas fluorescence beam profile monitor at the Relativistic Heavy Ion Collider (RHIC) has successfully recorded beam images of various species of relativistic heavy ions during FY2012 operations. These fully striped ions include gold, copper, and uranium at 100, 99.9, and 96:4 GeV=n, respectively. Their beam profiles give an independent measurement of the RHIC beam size and emittance. We estimated their corresponding fluorescence cross sections to be 2:1 Â 10 À16 , 1:8 Â 10 À17 , and 2:6 Â 10 À16 cm 2 , and obtained their rms transverse beam sizes of 0.36, 0.37, 0.24 mm for gold, copper, and uranium ions, respectively. They are the smallest ion beam width, thus lowest beam emittance, ever produced at RHIC or any other high-energy heavy ion colliders. These extremely small beam sizes may have reached a fundamental limit to residual gas fluorescence based beam profile monitor. Nevertheless, this beam diagnostic technique, utilizing the beam-induced fluorescence from residual gas where hydrogen is still the dominant constituent in nearly all vacuum systems, represents a passive, robust, truly noninvasive, monitor for high-energy ion beams.

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Section: Introductionmentioning

confidence: 99%

Residual gas fluorescence monitor for relativistic heavy ions at RHIC

Tsang

Gassner

Minty

2013

Phys. Rev. ST Accel. Beams

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Optical beam profile monitor and residual gas fluorescence at the relativistic heavy ion collider polarized hydrogen jet

Tsang

Bellavia

Connolly

et al. 2008

Review of Scientific Instruments

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A gas fluorescence beam profile monitor has been implemented at the relativistic heavy ion collider (RHIC) using the polarized atomic hydrogen gas jet, which is part of the polarized proton polarimeter. RHIC proton beam profiles in the vertical plane of the accelerator are obtained as well as measurements of the width of the gas jet in the beam direction. For gold ion beams, the fluorescence cross section is sufficiently large so that profiles can be obtained from the residual gas alone, albeit with long light integration times. We estimate the fluorescence cross sections that were not known in this ultrarelativistic regime and calculate the beam emittance to provide an independent measurement of the RHIC beam. This optical beam diagnostic technique, utilizing the beam induced fluorescence from injected or residual gas, offers a noninvasive particle beam characterization and provides visual observation of proton and heavy ion beams.

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Methods for organizing the interaction of circulating particle beams with internal targets in nuclear physics experiments at synchrotrons and storage rings

Artiomov

2017

Phys. Part. Nuclei

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Internal targets for monitoring the characteristics of particle beams in synchrotrons

Cited by 3 publications

References 33 publications

Residual gas fluorescence monitor for relativistic heavy ions at RHIC

Residual gas fluorescence monitor for relativistic heavy ions at RHIC

Optical beam profile monitor and residual gas fluorescence at the relativistic heavy ion collider polarized hydrogen jet

Methods for organizing the interaction of circulating particle beams with internal targets in nuclear physics experiments at synchrotrons and storage rings

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