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

Title:	Dr.
Family Name:	Grisham
First Name:	Larry
E-Mail:	lgrishampppl.gov
Affiliation for Badge:	Princeton University
Institute:	Plasma Physics Laboratory
Address (Street):	P. O. Box 451
Postal Code, City:	Princeton, New Jersey 08543
Country:	United States
Phone:	1- 609-683-0579
Fax:
Payment:	Cash at the conference site
Author(s):	L. R. Grisham, E. P. Gilson, I. Kaganovich and A. Stepanov
Institute(s):	Plasma Physics Laboratory, Princeton University, Princeton, New Jersey, 08543 USA
Title:	Experimental Program for the Princeton Ion Source Test Facility
Abstract:	A 100 kV ion source test stand is being installed and prepared for operation and a variety of topics will be explored using this facility. The practicality of magnetic insulation to improve the performance of electrostatic accelerators will be explored. If practical, magnetic insulation might find applicability in electrostatic accelerators used for heavy ion fusion and magnetic confinement fusion. The facility will be used to develop and characterize improved plasma sources for space charge neutralization of intense ion beam systems such as the Neutralized Drift Compression Experiment-II facility. Negative halogen ion beam and ion¿ion plasma studies will be resumed with the goal of measuring whether beams of negative ions and their positive counterparts extracted from an ion-ion plasma have a lower effective ion temperature than does a similar-mass positive ion beam extracted from an ordinary electron-ion plasma. If it does, then ion-ion plasmas might be the preferred source for low emittance beams whether one wants negative ions or positive ions. The beams used in these studies will be Cl- and Cl+ extracted from an ion-ion plasma, and Ar+ extracted from an electron-ion plasma. The facility will explore whether the magnetic filter, which is required in negative ion sources using weakly electro-negative gases, might be unnecessary in ion-ion plasmas produced in strongly electro-negative gases. These experiments will be followed by characterization of the extraction sheath in ion-ion plasmas. This will involve substantial theoretical analysis for interpretation.
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