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A. Fukusawa

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Last Name: Fukusawa

Full Name: A. Fukusawa

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2 papers

title: Beam Dynamics in a Hybrid Standing Wave-Traveling Wave Photoinjector

format: conference procceeding

conference:

year: 2006

11 authors: J. B. Rosenzweig | D. Alesini | A. Boni | M. Ferrario | L. Ficcadenti | A. Fukusawa | A. Mostacci | B. O'shea | L. Palumbo | B. Spataro | V. Fusco

abstract: We discuss the dynamics of of a photoinjector beam in a hybrid traveling wave-standing wave photoinjector. With the field profile deduced from electromagnetic simulations, it is seen that the acceleration program induces strong velocity bunching. The beam dynamics in this scenario are explored using UCLA PARMELA. With a solenoid field overlaid on the TW section one may control emittance oscillations during bunching and acceleration. It is seen that the S-band device currently under development at UCLA may produce a 1 nC, 21 MeV, 100 micron rms pulse length beam, with emittance of 3 mm-mrad. Applications of this beam for creating coherent radiation are discussed.

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title: The New Photoinjector for the Fermi Project

format: journal article

year: 2007

14 authors: G. D’Auria | D. Bacescu | L. Badano | F. Cianciosi | P. Craievich | M. Danailov | G. Penco | L. Rumiz | M. Trovo’ | A. Turchet | H. Badakov | A. Fukusawa | B. O’Shea | J.B. Rosenzweig

abstract: FERMI@elettra is a single-pass FEL user facility covering the spectral range 100-10 nm. It will be located near the Italian third generation Synchrotron Light Source facility ELETTRA and will make use of the existing 1.0 GeV normal conducting Linac [1]. To obtain the high beam brightness required by the project, the present Linac electron source will be substituted with a photocathode RF gun now under development in the framework of a collaboration between Sincrotrone Trieste (ST) and Particle Beam Physics Laboratory (PBPL) at UCLA. The new gun will use an improved design of the 1.6 cell accelerating structure already developed at PBPL, scaled to 2998 MHz. We expect that the new gun design will allow a beam brightness increase by a factor 3-4 over the older version of the device. Some technical choices of the new design, including the enhancement of the mode separation, removal of the RF tuners, full cell symmetrization to limit the dipole and quadrupole RF field as well as an improved solenoid yoke design for multipole field corrections, will be discussed.

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title:	Beam Dynamics in a Hybrid Standing Wave-Traveling Wave Photoinjector
format:	conference procceeding
conference:
year:	2006
11 authors:	J. B. Rosenzweig \| D. Alesini \| A. Boni \| M. Ferrario \| L. Ficcadenti \| A. Fukusawa \| A. Mostacci \| B. O'shea \| L. Palumbo \| B. Spataro \| V. Fusco
abstract:	We discuss the dynamics of of a photoinjector beam in a hybrid traveling wave-standing wave photoinjector. With the field profile deduced from electromagnetic simulations, it is seen that the acceleration program induces strong velocity bunching. The beam dynamics in this scenario are explored using UCLA PARMELA. With a solenoid field overlaid on the TW section one may control emittance oscillations during bunching and acceleration. It is seen that the S-band device currently under development at UCLA may produce a 1 nC, 21 MeV, 100 micron rms pulse length beam, with emittance of 3 mm-mrad. Applications of this beam for creating coherent radiation are discussed.
keywords:
Download \| View \| Details \| edit \| delete

title:	The New Photoinjector for the Fermi Project
format:	journal article
year:	2007
14 authors:	G. D’Auria \| D. Bacescu \| L. Badano \| F. Cianciosi \| P. Craievich \| M. Danailov \| G. Penco \| L. Rumiz \| M. Trovo’ \| A. Turchet \| H. Badakov \| A. Fukusawa \| B. O’Shea \| J.B. Rosenzweig
abstract:	FERMI@elettra is a single-pass FEL user facility covering the spectral range 100-10 nm. It will be located near the Italian third generation Synchrotron Light Source facility ELETTRA and will make use of the existing 1.0 GeV normal conducting Linac [1]. To obtain the high beam brightness required by the project, the present Linac electron source will be substituted with a photocathode RF gun now under development in the framework of a collaboration between Sincrotrone Trieste (ST) and Particle Beam Physics Laboratory (PBPL) at UCLA. The new gun will use an improved design of the 1.6 cell accelerating structure already developed at PBPL, scaled to 2998 MHz. We expect that the new gun design will allow a beam brightness increase by a factor 3-4 over the older version of the device. Some technical choices of the new design, including the enhancement of the mode separation, removal of the RF tuners, full cell symmetrization to limit the dipole and quadrupole RF field as well as an improved solenoid yoke design for multipole field corrections, will be discussed.
keywords:	pbpl
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