Section Navigation

Browse



logged in as: pbpl
logout
list users

6 talks:

Edit | List
title: The UCLA/NICADD Plasma Density Transition Trapping Experiment
format: talk
year:
1 author: M.C. Thompson
abstract:
keywords:
Download | Details | Edit | Delete
title: Transverse phase space coupling due to quadrupole errors in the SPARC photoinjector
format: talk
year: 2005
1 author: J.B. Rosenzweig
abstract:
keywords:
Details | Edit | Delete
title: Working Group 2 Summary: Diagnostics and Beam Manipulation
format: talk
year: 2005
1 author: G. Travish
abstract: A summary presentation of working group 2 of the ICFA Workshop of High Brightness Beams. The working group included talks on beam diagnostics and beam manipulation.
keywords:
Details | Edit | Delete
title: A PMQ-based, Ultra-short Focal Length, Final Focus System for Next Generation Beam-Radiation and Beam-Plasma Experiments
format: talk
year: 2004
1 author: G. Travish
abstract: Next-generation advanced-accelerators such as the PWFA, and beam-radiation interactions such as inverse-Compton scattering, depend on increased beam-density to achieve superior results. The photoinjector has enabled the production of high-brightness beams that are desirable for experiments with critical dependencies on bunch length and emittance. Along with the production of shorter and lower-emittance beams, comes the need to produce shorter focal-lengths (beta-functions). An approach to creating strong focusing-channels using high field, small-bore permanent-magnet quadrupoles (PMQs) has been followed by the authors. A focusing system using three PMQs, each composed of 16 Nd-Fe-B sectors in a Halbach geometry has been installed in the PLEIADES inverse-Compton experiment. As the magnets are of a fixed field-strength, the focusing system is tuned by adjusting the position of the three magnets along the beamline axis. This presentation covers the details of the focusing system, experimental experience, and implications for future experiments with an emphasis on advanced accelerators.
keywords:
Download | Details | Edit | Delete
title: Quasi-crystalline beam (QCB) formation in strongly accelerating intense electron distributions
format: talk
year: 2008
1 author: J.B. Rosenzweig
abstract: QUASI-CRYSTALLINE BEAM (QCB) FORMATION IN STRONGLY ACCELERATING INTENSE ELECTRON DISTRIBUTIONS Prof. J. Rosenzweig Frascati, LNF, June 12, 2008
keywords:
Download | Details | Edit | Delete
title: Opportunities and Hurdles in Optical Scale Accelerating Structures
format: talk
year: 05/27/2009
1 author: G. Travish
abstract: For some time it has been realized that scaling particle accelerators to optical frequencies presents new opportunities for the nearly ubiquitous use of charged particle beams. Various efforts are underway, albeit far too few, to achieve high gradient particle acceleration in both laser powered and wakefield driven dielectric structures. I will use my own work on the Micro Accelerator Platform (MAP) as an example of the various challenges faced by this class of accelerating structure. The MAP has design parameters similar to other such structures: laser powered; 800 nm period; gap (equivalent to the iris diameter in a conventional linac) of 800 nm; ~1 GV/m gradients; fC-pC charge per bunch; ~10 fs bunch lengths. The MAP and its ilk face hurdles ranging from fabrication technologies to sub-micron beam manipulation. The diagnostics required are demanding, a rich area of work, and overlap well with proposed next generation light source beams. Despite the barriers, these devices hold great promise. In speculating on applications and end uses, which span from colliders to compact light sources to medical devices, I will draw from a number of examples. Finally, I will use this seminar as a bully pulpit to advocate for dielectric accelerators in general.
keywords: pbpl  
Download | Details | Edit | Delete