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M. Messerly

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Last Name: Messerly

Full Name: M. Messerly

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2 papers

title: Commissioning of a High-Brightness Photoinjector for Compton Scattering X-Ray Sources

format: journal article

year: 2007

13 authors: S. G. Anderson | C. P. J. Barty | D. J. Gibson | F. V. Hartemann | M. Messerly | M. Shverdin | C. W. Siders | A. M. Tremaine | H. Badakov | P. Frigola | A. Fukasawa | B. OShea | J. B. Rosenzweig

abstract: Compton scattering of intense laser pulses with ultra- relativistic electron beams has proven to be an attractive source of high-brightness x-rays with keV to MeV ener- gies. This type of x-ray source requires the electron beam brightness to be comparable with that used in x-ray free- electron lasers and laser and plasma based advanced accel- erators. We describe the development and commissioning of a 1.6 cell RF photoinjector for use in Compton scatter- ing experiments at LLNL. Injector development issues such as RF cavity design, beam dynamics simulations, emit- tance diagnostic development, results of sputtered magne- sium photo-cathode experiments, and UV laser pulse shap- ing are discussed. Initial operation of the photoinjector is described.

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title: Nuclear Photo-Science And Applications with Thomson-Radiated Extreme X-Ray (T-Rex) Sources

format: journal article

year: 2006

15 authors: F.V. Hartemann | S.G. Anderson | S.M. Betts | D.J. Gibson | E.P. Hartouni | I. Jovanovic | A.K. Kerman | M. Messerly | D.P. McNabb | J. Pruet | J. Rosenzweig | M.Y. Shverdin | C.W. Siders | A.M. Tremaine | C.P.J. Barty

abstract: Recent advances in high brightness rf gun technology, coupled with novel laser systems and architecture have enabled the development of a new class of compact, tunable, monochromatic light sources capable of producing MeV photons with unprecedented brightness. Such new sources rely on Thomson scattering of incident photons produced by a TW-class laser off a bright relativistic electron beam to generate Doppler-upshifted photons in a highly collimated beam. Scaling laws [1] show that a frequency-doubled, 532 nm wavelength, 1 J, 10 ps Fourier transform-limited drive laser pulse interacting with a 250 MeV, 1 nC, 10 ps, 1 mm.mrad normalized emittance, with 0.1% relative energy spread, can yield a 2.24 MeV γ-ray flash with a peak brightness exceeding 1023 photons/[mm2 x mrad2 x s x 0.1% bandwidth]. This number is > 15 orders of magnitude beyond the output of a third-generation synchrotron at the same photon energy. Above ~ 100 keV, the photons can interact with nuclei, and nuclear applications become viable. In this paper, we present a technical overview of T- REX sources and their capabilities, and give a few examples of potential applications of interest.

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title:	Commissioning of a High-Brightness Photoinjector for Compton Scattering X-Ray Sources
format:	journal article
year:	2007
13 authors:	S. G. Anderson \| C. P. J. Barty \| D. J. Gibson \| F. V. Hartemann \| M. Messerly \| M. Shverdin \| C. W. Siders \| A. M. Tremaine \| H. Badakov \| P. Frigola \| A. Fukasawa \| B. OShea \| J. B. Rosenzweig
abstract:	Compton scattering of intense laser pulses with ultra- relativistic electron beams has proven to be an attractive source of high-brightness x-rays with keV to MeV ener- gies. This type of x-ray source requires the electron beam brightness to be comparable with that used in x-ray free- electron lasers and laser and plasma based advanced accel- erators. We describe the development and commissioning of a 1.6 cell RF photoinjector for use in Compton scatter- ing experiments at LLNL. Injector development issues such as RF cavity design, beam dynamics simulations, emit- tance diagnostic development, results of sputtered magne- sium photo-cathode experiments, and UV laser pulse shap- ing are discussed. Initial operation of the photoinjector is described.
keywords:	pbpl
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title:	Nuclear Photo-Science And Applications with Thomson-Radiated Extreme X-Ray (T-Rex) Sources
format:	journal article
year:	2006
15 authors:	F.V. Hartemann \| S.G. Anderson \| S.M. Betts \| D.J. Gibson \| E.P. Hartouni \| I. Jovanovic \| A.K. Kerman \| M. Messerly \| D.P. McNabb \| J. Pruet \| J. Rosenzweig \| M.Y. Shverdin \| C.W. Siders \| A.M. Tremaine \| C.P.J. Barty
abstract:	Recent advances in high brightness rf gun technology, coupled with novel laser systems and architecture have enabled the development of a new class of compact, tunable, monochromatic light sources capable of producing MeV photons with unprecedented brightness. Such new sources rely on Thomson scattering of incident photons produced by a TW-class laser off a bright relativistic electron beam to generate Doppler-upshifted photons in a highly collimated beam. Scaling laws [1] show that a frequency-doubled, 532 nm wavelength, 1 J, 10 ps Fourier transform-limited drive laser pulse interacting with a 250 MeV, 1 nC, 10 ps, 1 mm.mrad normalized emittance, with 0.1% relative energy spread, can yield a 2.24 MeV γ-ray flash with a peak brightness exceeding 1023 photons/[mm2 x mrad2 x s x 0.1% bandwidth]. This number is > 15 orders of magnitude beyond the output of a third-generation synchrotron at the same photon energy. Above ~ 100 keV, the photons can interact with nuclei, and nuclear applications become viable. In this paper, we present a technical overview of T- REX sources and their capabilities, and give a few examples of potential applications of interest.
keywords:	pbpl
Download \| View \| Details \| edit \| delete

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