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P. Colestock

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5 papers

title: Proposed continuous wave energy recovery operation of an x-ray free electron laser

format: journal article

year: 2005

17 authors: J. Sekutowicz | S.A. Bogacz | D. Douglas | P. Kneisel | G.P. Williams | M. Ferrario | I. Ben-Zvi | J. Rose | J. Smedley | T. Srinivasan-Rao | L. Serafini | W.D. Moller | B. .Petersen | D. Proch | S. Simrock | P. Colestock | J. B. Rosenzweig

abstract: Commissioning of two large coherent light facilities (XFELs) at SLAC and DESY should begin in 2008 and 2011, respectively. In this paper we look further into the future, hoping to answer, in a very preliminary way, two questions. First: What will the next generation of XFEL facilities look like? Believing that superconducting technology offers advantages such as high quality beams with highly populated bunches, the possibility of energy recovery and higher overall efficiency than warm technology, we focus this preliminary study on the superconducting option. From this belief the second question arises: What modifications in superconducting technology and in the machine design are needed, as compared to the present DESY XFEL, and what kind of research and development program should be proposed to arrive in the next few years at a technically feasible solution with even higher brilliance and increased overall conversion of ac power to photon beam power? In this paper we will very often refer to and profit from the DESY XFEL design, acknowledging its many technically innovative solutions.

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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: Towards a plasma wake-field acceleration-based linear collider

format: conference procceeding

conference: ICFA Second Generation Plasma Acceleration Workshop

year: 1998

5 authors: J. B. Rosenzweig | N. Barov | A. Murokh | E. Colby | P. Colestock

abstract: A proposal for a linear collider based on an advanced accelerator scheme, plasma wake-field acceleration in the extremely nonlinear regime, is discussed. In this regime, many of the drawbacks associated with preservation of beam quality during acceleration in plasma are mitigated. The scaling of all beam and wake parameters with respect to plasma wavelength is examined. Experimental progress towards high-gradient acceleration in this scheme is reviewed. We then examine a linear collider based on staging of many modules of plasma wake-field accelerator, all driven by a high average current, pulse compressed, RF photoinjector-fed linac. Issue of beam lending, efficiency, optimized stage length, and power efficiency are discussed. A proof-of-principle experimental test of the staging concept at the Fermilab test facility is discussed.

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title: Experimental testing of the TTF RF photoinjector

format: conference procceeding

conference: 1997 Particle Accelerator Conference

year: 1998

7 authors: E. Colby | M. Conde | J. B. Rosenzweig | P. Colestock | H. Edwards | Koepke, K. P. | Nezrick, F.

abstract: Results from the experimental testing of the prototype TESLA Test Facility (TTF) RF photoinjector are summarized. Preliminary measurements of the performance of the injector indicate that, with refinement, the design values for the transverse emittances (20 x 20 pi mm-mr) are not unrealistic, with uncompressed transverse emittances of 40 pi mm mr having been obtained under somewhat less ideal circumstances than those simulated. Preliminary pulse length measurements with and without the pulse compressor suggest pulse compression, but further study is required.

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title: Extraction from TeV-Range Accelerators Using Bent Crystal Channeling

format: unknown

year: 1994

45 authors: R. A. Carrigan | Chen, D. | P. Colestock | Herrup, D. | Goderre, G. | G. Jackson | C. T. Murphy | Stefanski, R. | Baker, S. | Mokhov, N. | Parker, B. | Shih, H. J. | Soundranayagam, R. | Toohig, T. | Peggs, S. | Sun, C. R. | Boden, A. | D. B. Cline | Gabella, W. | Ramachandran, S. | Rhoades, J. | J. B. Rosenzweig | Arenton, M. | Conetti, S. | Cox, B. | Dukes, D. | Golovatyuk, V. | McManus, A. | Nelson, K. | Norem, B. | Newberger, B. | Ellison, J. A. | Erwin, A. | Rossmanith, R. | Kovalenko, A. | Taratin, A. | Malakhov, N. | Tsyganov, E. | Bavizhev, M. | Biryukov, V. | M. Maslov | Khanzadeev, A. | Prokofieva, T. | Samsonov, V. | Solodov, G.

abstract: Plans and first results from Fermilab Experiment 853 are presented. E853 is an experiment to test the feasibility and efficiency of extracting a low-intensity beam from the halo of the Tevatron using channeling in a bent silicon crystal. The motivation of the experiment is to apply crystal extraction to trans-TeV accelerators like the LHC. Channeling developments related to crystal extraction and some early results from accelerator studies at the Tevatron are presented.

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title:	Proposed continuous wave energy recovery operation of an x-ray free electron laser
format:	journal article
year:	2005
17 authors:	J. Sekutowicz \| S.A. Bogacz \| D. Douglas \| P. Kneisel \| G.P. Williams \| M. Ferrario \| I. Ben-Zvi \| J. Rose \| J. Smedley \| T. Srinivasan-Rao \| L. Serafini \| W.D. Moller \| B. .Petersen \| D. Proch \| S. Simrock \| P. Colestock \| J. B. Rosenzweig
abstract:	Commissioning of two large coherent light facilities (XFELs) at SLAC and DESY should begin in 2008 and 2011, respectively. In this paper we look further into the future, hoping to answer, in a very preliminary way, two questions. First: What will the next generation of XFEL facilities look like? Believing that superconducting technology offers advantages such as high quality beams with highly populated bunches, the possibility of energy recovery and higher overall efficiency than warm technology, we focus this preliminary study on the superconducting option. From this belief the second question arises: What modifications in superconducting technology and in the machine design are needed, as compared to the present DESY XFEL, and what kind of research and development program should be proposed to arrive in the next few years at a technically feasible solution with even higher brilliance and increased overall conversion of ac power to photon beam power? In this paper we will very often refer to and profit from the DESY XFEL design, acknowledging its many technically innovative solutions.
keywords:
Download \| View \| Details \| edit \| delete

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).
keywords:
Download \| View \| Details \| edit \| delete

title:	Towards a plasma wake-field acceleration-based linear collider
format:	conference procceeding
conference:	ICFA Second Generation Plasma Acceleration Workshop
year:	1998
5 authors:	J. B. Rosenzweig \| N. Barov \| A. Murokh \| E. Colby \| P. Colestock
abstract:	A proposal for a linear collider based on an advanced accelerator scheme, plasma wake-field acceleration in the extremely nonlinear regime, is discussed. In this regime, many of the drawbacks associated with preservation of beam quality during acceleration in plasma are mitigated. The scaling of all beam and wake parameters with respect to plasma wavelength is examined. Experimental progress towards high-gradient acceleration in this scheme is reviewed. We then examine a linear collider based on staging of many modules of plasma wake-field accelerator, all driven by a high average current, pulse compressed, RF photoinjector-fed linac. Issue of beam lending, efficiency, optimized stage length, and power efficiency are discussed. A proof-of-principle experimental test of the staging concept at the Fermilab test facility is discussed.
keywords:
Download \| View \| Details \| edit \| delete

title:	Experimental testing of the TTF RF photoinjector
format:	conference procceeding
conference:	1997 Particle Accelerator Conference
year:	1998
7 authors:	E. Colby \| M. Conde \| J. B. Rosenzweig \| P. Colestock \| H. Edwards \| Koepke, K. P. \| Nezrick, F.
abstract:	Results from the experimental testing of the prototype TESLA Test Facility (TTF) RF photoinjector are summarized. Preliminary measurements of the performance of the injector indicate that, with refinement, the design values for the transverse emittances (20 x 20 pi mm-mr) are not unrealistic, with uncompressed transverse emittances of 40 pi mm mr having been obtained under somewhat less ideal circumstances than those simulated. Preliminary pulse length measurements with and without the pulse compressor suggest pulse compression, but further study is required.
keywords:
Download \| View \| Details \| edit \| delete

title:	Extraction from TeV-Range Accelerators Using Bent Crystal Channeling
format:	unknown
year:	1994
45 authors:	R. A. Carrigan \| Chen, D. \| P. Colestock \| Herrup, D. \| Goderre, G. \| G. Jackson \| C. T. Murphy \| Stefanski, R. \| Baker, S. \| Mokhov, N. \| Parker, B. \| Shih, H. J. \| Soundranayagam, R. \| Toohig, T. \| Peggs, S. \| Sun, C. R. \| Boden, A. \| D. B. Cline \| Gabella, W. \| Ramachandran, S. \| Rhoades, J. \| J. B. Rosenzweig \| Arenton, M. \| Conetti, S. \| Cox, B. \| Dukes, D. \| Golovatyuk, V. \| McManus, A. \| Nelson, K. \| Norem, B. \| Newberger, B. \| Ellison, J. A. \| Erwin, A. \| Rossmanith, R. \| Kovalenko, A. \| Taratin, A. \| Malakhov, N. \| Tsyganov, E. \| Bavizhev, M. \| Biryukov, V. \| M. Maslov \| Khanzadeev, A. \| Prokofieva, T. \| Samsonov, V. \| Solodov, G.
abstract:	Plans and first results from Fermilab Experiment 853 are presented. E853 is an experiment to test the feasibility and efficiency of extracting a low-intensity beam from the halo of the Tevatron using channeling in a bent silicon crystal. The motivation of the experiment is to apply crystal extraction to trans-TeV accelerators like the LHC. Channeling developments related to crystal extraction and some early results from accelerator studies at the Tevatron are presented.
keywords:
Download \| View \| Details \| edit \| delete

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