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Linear Accelerator Conference 2006

Name: Linear Accelerator Conference 2006

Location: Knoxville

Date: 2006-01-01

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Created at: Wed Nov 14 15:26:11 -0800 2007

Updated at: Wed Nov 14 15:26:11 -0800 2007

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3 papers from the conference:

title: Nuclear Photo-Science And Applications with Thomson-Radiated Extreme X-Ray (T-Rex) Sources
format: conference proceeding
conference: Linear Accelerator Conference 2006
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.B. 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 ?-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: LASER BEAT-WAVE MICROBUNCHING OF RELATIVISTIC ELECTRON BEAM IN THE THZ RANGE
format: conference proceeding
conference: Linear Accelerator Conference 2006
year: 2006
6 authors: S. Ya. Tochitsky | S. Reiche | C. Sung | J.B. Rosenzweig | C. Pellegrini | C. Joshi
abstract: Laser-driven plasma accelerators have recently demonstrated a ~1GeV energy gain of self-trapped electrons in a several-centimeter-long plasma channel. Potential staging of such devices will require the external injection of an electron beam prebunched on the scale of 1-10 THz into a plasma accelerating structure or plasma LINAC. Seeded FEL/IFEL techniques can be used for modulation of the electron beam longitudinally on the radiation wavelength scale. However, a seed source in this spectral range is not available. At the UCLA Neptune Laboratory a Laser Beat-Wave (LBW) microbunching experiment has begun. The interaction of the electron beam and the LBW results in ponderomotive acceleration and energy modulation on the THz scale. This stage is followed by a ballistic drift of the electrons, where the gained energy modulation is transferred to the beam current modulation. Then the beam is sent into a 33-cm long undulator, where a coherent start-up of THz radiation takes place, and the THz pulse is used for a bunching analysis. The performance of LBW bunching is simulated and analyzed using a 3D FEL code for the parameters of an existing photoinjector and two-wavelength TW CO2 laser system.
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title: Status of the SPARC Photoinjector
format: conference proceeding
conference: Linear Accelerator Conference 2006
year: 2006
69 authors: D. Alesini | M. Bellaveglia | S. Bertolucci | R. Boni | M. Boscolo | M. Castellano | A. Clozza | L. Cultrera | G. Di Pirro | A. Drago | A. Esposito | M. Ferrario | L. Ficcadenti | D. Filippetto | V. Fusco | G. Gatti | A. Gallo | A. Ghigo | M. Incurvati | C. Ligi | F. Marcellini | M. Migliorati | A. Mostacci | L. Palumbo | L. Pellegrino | M. Preger | R. Ricci | C. Sanelli | M. Serio | F. Sgamma | B. Spataro | A. Stecchi | A. Stella | F. Tazzioli | C. Vaccarezza | M. Vescovi | C. Vicario | F. Alessandria | A. Bacci | I. Boscolo | F. Broggi | S.Cialdi | C. DeMartinis | D. Giove | C. Maroli | M. Mauri | V. Petrillo | M. Rome | A. R. Rossi | L. Serafini | D. Levi | M. Mattioli | P. Musumeci | G. Medici | D. Pelliccia | M. Petrarca | L. Catani | E. Chiadroni | A. Cianchi | E. Gabrielli | S. Tazzari | A. Perrone | L. Giannessi | L. Picardi | M. Quattromini | C. Ronsivalle | J.B. Rosenzweig | G. Travish | S. Reiche
abstract: The SPARC Project is starting the commissioning of its photo-injector. RF gun, RF sources, RF network and control, power supplies, emittance meter, beam diagnostics and control to measure the RF gun beam have been installed. The photocathode drive laser has been characterized in terms of pulse shape and quality. We will report also about first tests made on RF gun and on the emittance meter device. Additional R&D on X-band and S-band structures for velocity bunching are in progress, as well as studies on new photocathode materials. We will also discuss studies on solenoid field defects, beam based alignments and exotic electron bunch production via blow-out of short laser pulses.
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