CERN Accelerating science

Article
Title	Initial Results on Neutralized Drift Compression Experiments (NDCX-IA) for High Intensity Ion Beam
Author(s)	Roy, Prabir K ; Anders, Andre ; Baca, David ; Bieniosek, Frank ; Coleman, Joshua E ; Davidson, Ronald C ; Efthimion, Philip ; Eylon, Shmuel ; Gilson, Erik P ; Grant Logan, B ; Greenway, Wayne ; Henestroza, Enrique ; Kaganovich, Igor D ; Leitner, Matthaeus ; Rose, David ; Sefkow, Adam ; Sharp, William M ; Shuman, Derek ; Thoma, Carsten H ; Vanecek, David ; Waldron, William ; Welch, Dale ; Yu, Simon
Affiliation	(ATK-MR, Albuquerque, New Mexico) ; (LBNL, Berkeley) ; (LLNL, Livermore, California) ; (NDCX-IA) ; (PPPL, Princeton, New Jersey)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3856
Subject category	Accelerators and Storage Rings
Abstract	Ion beam neutralization and compression experiments are designed to determine the feasibility of using compressed high intensity ion beams for high energy density physics (HEDP) experiments and for inertial fusion power. To quantitatively ascertain the various mechanisms and methods for beam compression, the Neutralized Drift Compression Experiment (NDCX) facility is being constructed at Lawrence Berkeley National Laboratory (LBNL). In the first compression experiment, a 260 KeV, 25 mA, K+ ion beam of centimeters size is radially compressed to a mm size spot by neutralization in a meter-long plasma column and beam peak current is longitudinally compressed by an induction velocity tilt core. Instrumentation, preliminary results of the experiments, and practical limits of compression are presented. These include parameters such as emittance, degree of neutralization, velocity tilt time profile, and accuracy of measurements (fast and spatially high resolution diagnostic) are discussed.