First Name: S
Middle Name:
Last Name: Rajagopalan
Full Name: Rajagopalan, S.
tags:
view citation format
4 papers
| title: | A plane-wave-transformer photoelectron linac |
| format: | conference procceeding |
| conference: | 1997 Particle Accelerator Conference |
| year: | 1998 |
| 7 authors: | | | | | | | |
| abstract: | We develop a novel photoelectron linear accelerator using a plane wave transformer (PWT) design. In this design, the input RF power is coupled to the accelerating cavities via a large concentric manifold cavity. The scheme makes possible very strong coupling between the accelerating cells, and relaxes manufacturing tolerances. The compact photoelectron linac integrates a photocathode directly into a PWT linac structure, and eliminates the drift space between a photoinjector and the linac which would otherwise lengthen the electron bunches. Using an emittance compensation scheme, the PWT photoelectron linac produces a high-brightness beam. We have demonstrated by simulations the feasibility of a 20 MeV PWT photoelectron linac design with a set of eleven iris-loaded disks suspended and cooled by four water tubes inside a large cylindrical tank. (5 References). |
| keywords: | |
|
Download | View | Details |
|
| title: | Plasma Lens Experiments at the Final Focus Test Beam |
| format: | conference procceeding |
| conference: | |
| year: | 1995 |
| 33 authors: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| abstract: | We intend to carry out a series of plasma lens experiments at the Final Focus Test Beam facility at SLAC. These experiments will be the first to study the focusing of particle beams by plasma focusing devices in the parameter regime of interest for high energy colliders, and is expected to lead to plasma lens designs capable of unprecedented spot sizes. Plasma focusing of positron beams will be attempted for the first time. We will study the effects of lens aberrations due to various lens imperfections. Several approaches will be applied to create the plasma required including laser ionization and beam induced tunneling ionization of a working gas - the latter which has never been observed before. The compactness of our device should prove to be of interest for applications at the SLC and the next generation linear colliders. |
| keywords: | |
| Details | |
| title: | Plasma Lenses for SLAC Final Focus Test Facility |
| format: | conference procceeding |
| conference: | 1991 Particle Accelerator Conference |
| year: | 1991 |
| 11 authors: | | | | | | | | | | | |
| abstract: | A collaborative group of accelerator and plasma physicists and engineers has formed with an interest in exploring the use of plasma lenses to meet the needs of future colliders. Analytic and computational models of plasma lenses are briefly reviewed and several design examples for the SLAC Final Focus Test Beam are presented. The examples include discrete, thick, and adiabatic lenses. A potential plasma source with desirable lens characteristics is presented. |
| keywords: | |
|
Download | View | Details |
|
| title: | Final focusing and enhanced disruption from an underdense plasma lens in a linear collider |
| format: | unknown |
| year: | 1989 |
| 3 authors: | | | |
| abstract: | In this work we examine the viability of employing an underdense plasma lens as a final focusing method for a linear e+e- collider. The underdense plasma lens is superior to the overdense lens in that it improves focusing linearity and background event rate, but works well only for electrons. We thus consider the interaction of an e- beam which is smaller than the e+ beam at collision, a case we term "bootstrap disruption." The potential luminosity enhancement is determined by analysis of the lens optics and simulation of the bootstrap disruption. |
| keywords: | |
|
Download | View | Details |
|