Thomson parabola ion energy analyzer

Conference · Thu Dec 31 23:00:00 EST 2009

OSTI ID:1016110

Cobble, James A ^[1]; Flippo, Kirk A ^[1]; Letzring, Samuel A ^[1]; Lopez, Frank E ^[1]; Offermann, Dustin T ^[1]; Oertel, John A ^[1]; Mastrosimone, Dino ^[2]

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1. Los Alamos National Laboratory
2. UNIV OF ROCHESTER

A new, versatile Thomson parabola ion energy (TPIE) analyzer has been designed and constructed for use at the OMEGA-EP facility. Multi-MeV ions from EP targets are transmitted through a W pinhole into a (5- or 8-kG) magnetic field and subsequently through a parallel electric field of up to 30 kV/cm. The ion drift region may have a user-selected length of 10, 50, or 80 cm. With the highest fields, 500-Me V C{sup 6+} and C{sup 5+} may be resolved. TPIE is TIM-mounted at OMEGA-EP and is qualified in all existing TIMs. The instrument runs on pressure-interlocked 15-VDC power available in EP TIM carts. It may be inserted to within several inches of the target to attain sufficient flux for a measurement. For additional flux control, the user may select a square-aperture W pinhole of 0.004-inch or 0.010-inch. The detector consists of CR-39 backed by an image plate. The fully relativistic design code and design features are discussed. Ion spectral results from first use at OMEGA-EP are expected.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1016110
• Report Number(s): LA-UR-10-03715; LA-UR-10-3715
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
DESIGN
ELECTRIC FIELDS
ION DRIFT
MAGNETIC FIELDS
PARABOLAS
TARGETS