Supporting technologies for a long-pulse spallation source

Technical Report · Thu Dec 31 04:00:00 EST 1998

DOI:https://doi.org/10.2172/304129· OSTI ID:304129

Russell, G J; Weinacht, D J; Ferguson, P D; Pitcher, E J; Court, J D; Greene, G L

This is the final report of a two-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The project is directed toward the development of the technologies required for a long-pulse, spallation neutron source (LPSS). Traditionally, spallation neutron sources have used proton accelerators that provide intense, short ({le} 1{micro}s) pulses of high-energy protons to a spallation target. A LPSS uses a proton pulse with longer time duration ({approx} 1 ms) and offers the possibility of achieving very high spallation neutron fluxes at substantially lower cost. The performance of a LPSS is very dependent on the neutronic performance of the target-moderator system. A detailed study of this performance has been carried out using Monte Carlo simulations. It should be noted that a LPSS is optimally suited to a fully coupled moderator. Neutron production per proton from such a moderator is a factor of five to seven greater than that produce d by moderators used at short pulse sources. The results of these efforts have been published in a series of articles.

• Research Organization: Los Alamos National Lab., NM (US)
• Sponsoring Organization: USDOE Assistant Secretary for Management and Administration, Washington, DC (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 304129
• Report Number(s): LA-UR--98-2607; ON: DE99001268
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
43 PARTICLE ACCELERATORS
ACCELERATORS
LANL
MODERATORS
NEUTRON SOURCES
NEUTRONS
PERFORMANCE
PRODUCTION
PROTONS
SPALLATION