Direct nuclear activation diagnostics of intense ion beams on PBFA IIX
Conference
·
OSTI ID:423057
- Sandia National Labs., Albuquerque, NM (United States)
- Univ. of New Mexico, Albuquerque, NM (United States)
- Ktech Corp., Albuquerque, NM (United States)
In 1995 the Particle Beam Fusion Accelerator was converted from a barrel diode to an extraction diode configuration. This new configuration, termed PBFA IIX, gives greater access to the diode which has resulted in higher shot rates; allows higher voltage operation; and is compatible with beam propagation which will be necessary to field high-yield, inertial-confinement-fusion targets. The extraction anode consists of a flat, annular ring. The authors have fielded a variety of nuclear activation diagnostics to help assess the performance of this diode. The primary activation diagnostic allows one to estimate the hydrogen and lithium beam energy densities by measuring the products of the reactions: {sup 7}Li(p,n){sup 7}Be, {sup 10}B(p,{alpha}){sup 7}Be, and {sup 19}F({sup 7}Li,d){sup 24}Na. With another activation diagnostic, the authors have estimated peak ion energies using the range filter technique. Finally, initial experiments with the extraction geometry have exhibited a large, high-energy (> 10 MeV) background of either photons or neutrons. The authors have fielded copper, titanium, indium, and iron samples to measure thermal neutron capture reactions, and high energy (n, 2n) and (g,n) reactions.
- Research Organization:
- Sandia National Laboratory
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 423057
- Report Number(s):
- CONF-960634--
- Country of Publication:
- United States
- Language:
- English
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