Drag Instability in the Modified Betatron.
Abstract
The instability discussed in this report is a special case of the resistive wall instability. It occurs when the beam current, that propagates inside a resistive vacuum chamber along an external toroidal magnetic field, exceeds a critical value. The drag instability is characterized by uniform density in the direction of propagation, i.e., the toroidal wave number is zero. The authors have studied the drag instability over a wide range of parameters, including the limit theta greater than (b-a) where delta is the skin depth and (b-a) is the thickness of the conducting wall. This limit is relevant to the proof-of-principle experiment on the modified betratron accelerator presently under design at the Naval Research Laboratory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 16, 1983
- Accession Number
- ADA128242
Entities
People
- Chris A. Kapetanakos
- Phillip A. Sprangle
Organizations
- United States Naval Research Laboratory