HIF 2010
18th International Symposium
on Heavy Ion Inertial Fusion -
Information

Title:	Dr.
Family Name:	Grote
First Name:	David
E-Mail:	dpgrotelbl.gov
Affiliation for Badge:	LLNL, Livermore
Institute:
Address (Street):	MS 47R0112, 1 Cyclotron Rd
Postal Code, City:	Berkeley CA 94720
Country:	United States
Phone:	510-495-2961
Fax:
Payment:	Cash at the conference site
Author(s):	D. P. Grote, A. Friedman, W. M. Sharp, S. M. Lund, R. Cohen, J. L. Vay
Institute(s):	LLNL, LBNL
Title:	Characterization of errors and optimization of NDCX-II
Abstract:	NDCX-II, the second neutralized drift compression experiment, is a moderate energy, high current accelerator that is designed to drive targets for warm dense matter and IFE-relevant energy coupling studies and to serve as a testbed for high current accelerator physics. While construction of NDCX-II is underway, work has continued to assess the sensitivities of the accelerator to errors, and to further optimize the design in concert with the evolving pulsed power engineering. The Warp code is used to carry out detailed simulations in both axisymmetric and full 3-D geometry. Ensembles of simulations have been done to characterize the effects of errors, such as timing jitter and noise on the accelerator waveforms, noise on the source waveform, solenoid and source offsets, and non-uniform source emission. Methods for minimizing the effects of these errors, such as beam steering, have also been studied. In some cases, the ensemble studies have resulted in better designs, revealing operating points with improved optimization and showing possible ways for further improvement. These studies have also turned up a new non-paraxial effect of the final focus solenoid on the beam, which puts a constraint on its field strength. This work will be presented and discussed.
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