Design of an RFQ-Based Neutron Source for Cargo ContainerInterrogation
An RFQ-based neutron generator system is described that produces pulsed neutrons for the active screening of sea-land cargo containers for the detection of shielded special nuclear materials (SNM).A microwave-driven deuteron source is coupled to an electrostatic LEBT that injects a 40 mA D+ beam into a 6 MeV, 5.1 meter-long 200 MHz RFQ.The RFQ has a unique beam dynamics design and is capable of operating at duty factors of 5 to 10 percent accelerating a D+ time-averaged current of up to 1.5 mA at 5 percent duty factor, including species and transmission loss. The beam is transported through a specially-designed thin window into a 2.5-atmosphere deuterium gas target. A high-frequency dipole magnet is used to scan the beam over the long dimension of the 5by 35 cm target window. The source will deliver a neutron flux of 1 cdot107 n/(cm2s) to the center of an empty cargo container. Details of the ion source, LEBT, RFQ beam dynamics and gas target design are presented.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of AdvancedScientific Computing Research. Office of High Energy Physics; USDepartment of Homeland Security Contract HSHQBP-05-X-00033
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 898948
- Report Number(s):
- LBNL-59992; R&D Project: 455101; BnR: KA1501020; TRN: US0701725
- Resource Relation:
- Conference: 2006 Linear Accelerator Confernce, Knoxville, TN,August 21-25, 2006
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mechanical Design and Analysis of a 200 MHz, Bolt-together RFQ forthe Accelerator Driven Neutron Source
Detection of Special Nuclear Material in Cargo Containers Using Neutron Interrogation