Optimization of a Neutralized Beam Compression Experiment
Abstract
NDCX-I is a series of experiments being designed and built by the VNL for Heavy Ion Fusion at LBNL, to test the feasibility and provide the data base (scientific and engineering) for the design and construction of a neutralized longitudinal and transverse beam compression system. One experiment will utilize the NTX beam (25 mA of potassium at 250 keV) that has already being used to demonstrate transverse beam compression from 20 mm to about 1 mm spot size. The longitudinal beam compression will be tested by using an induction cell gap to apply a head to tail velocity tilt to a section (500 ns) of the NTX beam before entering the neutralization pipe. By controlling the velocity tilt several degrees of compression can be obtained. We will present the effect of the beam quality, accelerating gap geometry and pulse shape, on the beam dynamics and compression ratio at the minimum spot size location.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 2004
- Bibcode:
- 2004APS..DPPRP1018H