First Name: D
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Last Name: Larson
Full Name: Larson, D. J.
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4 papers
| title: | Progress in the Design of a DC FEL Power Source Using a Pelletron Driver |
| format: | conference procceeding |
| conference: | 1987 Particle Accelerator Conference |
| year: | 1987 |
| 7 authors: | | | | | | | |
| abstract: | We discuss progress in the design of a DC Free Electron Laser power source using a Pelletron electrostatic accelerator as a driver. Such a power source should deliver up to 200 kW DC power in wavelengths ranging from a few microns to a few centimeters. The advantages of this system for use as a power source for future acceleration techniques are its efficiency, tunability and high average power. In order to achieve DC operation of the system extremely high electron recovery efficiencies are required. It is also likely that FEL operation will result in a large spread of electron energies. These design constraints require the development of a highly efficient electron beam collector as well as beam optics capable of recirculating beams with a large energy spread. We present collector and beamline designs and include electron optics studies for the full range of operating conditions. |
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| title: | Luminosity enhancement in linear colliders using a short focal length plasma lens |
| format: | conference procceeding |
| conference: | UCLA Workshop on Linear-Collider BB Factory Conceptual Design |
| year: | 1987 |
| 4 authors: | | | | |
| abstract: | It is likely that powerful new focusing methods will be required for the linear colliders of the future. One scheme that shows much promise is plasma focusing in which a particle bunch traversing a plasma is focused by its own wake-fields. The authors present a review of the theory of self pinching due to plasma wake-fields and extend these previous results by discussing how this effect might be of use in constructing a short focal length plasma lens. They then discuss the general properties of short focal length lenses, and the luminosity enhancement that can be theoretically obtained from them. They also examine some of the practical issues involved in installing a plasma lens in a linear collider. (12 References). |
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| title: | Tunable two frequency free electron laser using a Pelletron as a driver for a plasma beatwave accelerator |
| format: | conference procceeding |
| conference: | 8th International Free Electron Laser Conference |
| year: | 1987 |
| 4 authors: | | | | |
| abstract: | The possibility of amplifying two frequencies simultaneously in a free electron laser is discussed. Stability conditions for electron motion are derived, and numerical calculations reported. The advantages offered by using a DC Pelletron beam to power such a device, with application to the plasma beatwave accelerator-high efficiency, high average power, radiation wavelength tunability, and the possibility of phase locking several independent optical cavities-are evaluated. Related research efforts, and their impact on the design of this device, are discussed. (10 References). |
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| title: | Plasma wake field acceleration: a proposed experimental test |
| format: | conference procceeding |
| conference: | 2nd Workshop on Laser Acceleration of Particles |
| year: | 1985 |
| 9 authors: | | | | | | | | | |
| abstract: | The prospect of achieving very high accelerating fields has led to proposals for using electrostatic plasma waves to accelerate charged particles for high energy physics. It has been predicted theoretically that these plasma waves can be driven by the wake fields of short bunches, or trains of bunches, of charged particles, to accelerate a subsequent bunch; the longitudinal electric fields could possibly be of the order of a few GV/m. The authors present an outline of a proposed experimental test of this principle. (14 References). |
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