Demonstration of a laserwire emittance scanner for hydrogen ion beams at CERN

Thomas Hofmann; Konstantin Kruchinin; Alessio Bosco; Stephen Gibson; Federico Roncarolo; Gary Boorman; Uli Raich; Enrico Bravin; Juergen Pozimski; Alan Letchford; Christoph Gabor

doi:10.1103/PhysRevSTAB.18.122801

Demonstration of a laserwire emittance scanner for hydrogen ion beams at CERN

Thomas Hofmann, Konstantin Kruchinin, Alessio Bosco, Stephen Gibson, Federico Roncarolo, Gary Boorman, Uli Raich, Enrico Bravin, Juergen Pozimski, Alan Letchford, Christoph Gabor

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Abstract

A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H⁻ beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed via fibre to collide with the H⁻ beam, a fraction of which is neutralized and then intercepted by a downstream diamond detector. Scanning the focused laser across the H⁻ beam and measuring the distribution of the photo-neutralized particles enables the transverse emittance to be reconstructed. The vertical phase-space distribution of a 3 MeV beam during LINAC4 commissioning has been measured by the laserwire and verified with a conventional slit and grid method.

Original language	English
Article number	122801
Pages (from-to)	1-10
Number of pages	10
Journal	Physical Review Special Topics: Accelerators and Beams
Volume	18
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevSTAB.18.122801
Publication status	Published - 21 Dec 2015

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Accepted ManuscriptAccepted author manuscript, 2.34 MBLicence: CC BY

http://journals.aps.org/prab/abstract/10.1103/PhysRevSTAB.18.122801

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title = "Demonstration of a laserwire emittance scanner for hydrogen ion beams at CERN",

abstract = "A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H− beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed via fibre to collide with the H− beam, a fraction of which is neutralized and then intercepted by a downstream diamond detector. Scanning the focused laser across the H− beam and measuring the distribution of the photo-neutralized particles enables the transverse emittance to be reconstructed. The vertical phase-space distribution of a 3 MeV beam during LINAC4 commissioning has been measured by the laserwire and verified with a conventional slit and grid method.",

author = "Thomas Hofmann and Konstantin Kruchinin and Alessio Bosco and Stephen Gibson and Federico Roncarolo and Gary Boorman and Uli Raich and Enrico Bravin and Juergen Pozimski and Alan Letchford and Christoph Gabor",

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T1 - Demonstration of a laserwire emittance scanner for hydrogen ion beams at CERN

AU - Hofmann, Thomas

AU - Kruchinin, Konstantin

AU - Bosco, Alessio

AU - Gibson, Stephen

AU - Roncarolo, Federico

AU - Boorman, Gary

AU - Raich, Uli

AU - Bravin, Enrico

AU - Pozimski, Juergen

AU - Letchford, Alan

AU - Gabor, Christoph

PY - 2015/12/21

Y1 - 2015/12/21

N2 - A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H− beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed via fibre to collide with the H− beam, a fraction of which is neutralized and then intercepted by a downstream diamond detector. Scanning the focused laser across the H− beam and measuring the distribution of the photo-neutralized particles enables the transverse emittance to be reconstructed. The vertical phase-space distribution of a 3 MeV beam during LINAC4 commissioning has been measured by the laserwire and verified with a conventional slit and grid method.

AB - A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H− beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed via fibre to collide with the H− beam, a fraction of which is neutralized and then intercepted by a downstream diamond detector. Scanning the focused laser across the H− beam and measuring the distribution of the photo-neutralized particles enables the transverse emittance to be reconstructed. The vertical phase-space distribution of a 3 MeV beam during LINAC4 commissioning has been measured by the laserwire and verified with a conventional slit and grid method.

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Demonstration of a laserwire emittance scanner for hydrogen ion beams at CERN

Abstract

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