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Carneiro, J. P.

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Last Name: Carneiro

Full Name: Carneiro, J. P.

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3 papers

title: Ultra high-gradient energy loss by a pulsed electron beam in a plasma

format: conference procceeding

conference: 2001 Particle Accelerator Conference

year: 2001

9 authors: N. Barov | Bishofberger, K. | J. B. Rosenzweig | Carneiro, J. P. | P. Colestock | H. Edwards | Fitch, M. J. | W. Hartung | Santucci, J.

abstract: The plasma wake-field mechanism can be used to couple energy at a high rate from a bunched electron beam into a plasma wave. We will present results from the Fermilab A0 facility where a beam with an initial energy of 14 MeV passes through the plasma to emerge with a much broader energy spread, spanning from a low of 3 MeV to a high of over 20 MeV. Over the 8 cm length of the 10(14) cm(-3) plasma, this implies a 140 MeV/m deceleration and 72 MeV/m acceleration gradient. (12 References).

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title: First results of the Fermilab high-brightness RF photoinjector

format: conference procceeding

conference: 1999 Particle Accelerator Conference

year: 1999

18 authors: Carneiro, J. P. | R. A. Carrigan | Champion, M. S. | P. L. Colestock | H. T. Edwards | Fuerst, J. D. | W. H. Hartung | Koepke, K. P. | Kuchnir, M. | J. K. Santucci | Spentzouris, L. K. | Fitch, M. J. | Melissinos, A. C. | P. Michelato | C. Pagani | Sertore, D. | N. Barov | J. B. Rosenzweig

abstract: A collaboration has been formed between FNAL, UCLA, LNFN Milano, the University of Rochester, and DESY to develop the technology of an RF photoinjector, followed by a superconducting cavity, to produce high bunch charge (8 nC) with low normalized emittance ([left angle bracket]20 mm mrad) in bunch spacing trains of 800 bunches separated by mu s. The activities of bunch charge the collaboration fall into two categories: 1. the development of Injector II for the TeSLA/TTF accelerator. This photoinjector (TTF RF Gun) was tested at Fermilab in September and October 1998 and installed at DESY in November 1998. 2. the installation at the A0 Hall of Fermilab of a modified version of the TTF photoinjector, for photoinjector R&D and to study novel applications of high-brightness, pulsed electron beams. This photoinjector (A0 RF Gun) produced its first beam in March 1999. This paper presents a summary of the tests done at Fermilab on the TITF Injector II and the first results obtained on the new Fermilab photoinjector.

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title: Beam transport, acceleration and compression studies in the Fermilab high-brightness photoinjector

format: conference procceeding

conference: 1998 Linear Accelerator Conference

year: 1998

20 authors: Carneiro, J. P. | R. Carrigan | Champion, M. S. | A. Cianchi | E. R. Colby | P. L. Colestock | H. T. Edwards | Fuerst, J. D. | W. Hartung | Koepke, K. P. | Kuchnir, M. | Spentzouris, L. K. | Fitch, M. J. | Fry, A. R. | Melissinos, A. C. | Taylor, B. D. | P. Michelato | Sertore, D. | C. Pagani | J. B. Rosenzweig

abstract: A photoinjector is being constructed in order to produce a pulse train of up to 800 electron bunches, each with 8 nC of charge and a 3.5 ps rms bunch length. The spacing between bunches within a train is 1 s and the train repetition rate is 1?10 Hz. The desired transverse emittance is <20 mm mrad. An rf photo-gun delivers a bunched 4?5 MeV beam which will be accelerated to 14?18 MeV by a 9- cell superconducting cavity and compressed magnetically. Measurements have been done on the beam delivered by a first prototype rf gun; installation of a new rf gun, the 9-cell cavity, and the bunch compressor is in progress.

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title:	Ultra high-gradient energy loss by a pulsed electron beam in a plasma
format:	conference procceeding
conference:	2001 Particle Accelerator Conference
year:	2001
9 authors:	N. Barov \| Bishofberger, K. \| J. B. Rosenzweig \| Carneiro, J. P. \| P. Colestock \| H. Edwards \| Fitch, M. J. \| W. Hartung \| Santucci, J.
abstract:	The plasma wake-field mechanism can be used to couple energy at a high rate from a bunched electron beam into a plasma wave. We will present results from the Fermilab A0 facility where a beam with an initial energy of 14 MeV passes through the plasma to emerge with a much broader energy spread, spanning from a low of 3 MeV to a high of over 20 MeV. Over the 8 cm length of the 10(14) cm(-3) plasma, this implies a 140 MeV/m deceleration and 72 MeV/m acceleration gradient. (12 References).
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title:	First results of the Fermilab high-brightness RF photoinjector
format:	conference procceeding
conference:	1999 Particle Accelerator Conference
year:	1999
18 authors:	Carneiro, J. P. \| R. A. Carrigan \| Champion, M. S. \| P. L. Colestock \| H. T. Edwards \| Fuerst, J. D. \| W. H. Hartung \| Koepke, K. P. \| Kuchnir, M. \| J. K. Santucci \| Spentzouris, L. K. \| Fitch, M. J. \| Melissinos, A. C. \| P. Michelato \| C. Pagani \| Sertore, D. \| N. Barov \| J. B. Rosenzweig
abstract:	A collaboration has been formed between FNAL, UCLA, LNFN Milano, the University of Rochester, and DESY to develop the technology of an RF photoinjector, followed by a superconducting cavity, to produce high bunch charge (8 nC) with low normalized emittance ([left angle bracket]20 mm mrad) in bunch spacing trains of 800 bunches separated by mu s. The activities of bunch charge the collaboration fall into two categories: 1. the development of Injector II for the TeSLA/TTF accelerator. This photoinjector (TTF RF Gun) was tested at Fermilab in September and October 1998 and installed at DESY in November 1998. 2. the installation at the A0 Hall of Fermilab of a modified version of the TTF photoinjector, for photoinjector R&D and to study novel applications of high-brightness, pulsed electron beams. This photoinjector (A0 RF Gun) produced its first beam in March 1999. This paper presents a summary of the tests done at Fermilab on the TITF Injector II and the first results obtained on the new Fermilab photoinjector.
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title:	Beam transport, acceleration and compression studies in the Fermilab high-brightness photoinjector
format:	conference procceeding
conference:	1998 Linear Accelerator Conference
year:	1998
20 authors:	Carneiro, J. P. \| R. Carrigan \| Champion, M. S. \| A. Cianchi \| E. R. Colby \| P. L. Colestock \| H. T. Edwards \| Fuerst, J. D. \| W. Hartung \| Koepke, K. P. \| Kuchnir, M. \| Spentzouris, L. K. \| Fitch, M. J. \| Fry, A. R. \| Melissinos, A. C. \| Taylor, B. D. \| P. Michelato \| Sertore, D. \| C. Pagani \| J. B. Rosenzweig
abstract:	A photoinjector is being constructed in order to produce a pulse train of up to 800 electron bunches, each with 8 nC of charge and a 3.5 ps rms bunch length. The spacing between bunches within a train is 1 s and the train repetition rate is 1?10 Hz. The desired transverse emittance is <20 mm mrad. An rf photo-gun delivers a bunched 4?5 MeV beam which will be accelerated to 14?18 MeV by a 9- cell superconducting cavity and compressed magnetically. Measurements have been done on the beam delivered by a first prototype rf gun; installation of a new rf gun, the 9-cell cavity, and the bunch compressor is in progress.
keywords:
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