Lujan Center Mission
The Lujan Center delivers science by exploiting the unique characteristics of intense beams of moderated pulsed neutrons for academia, national security, and industry.
Lujan Center Vision
The Lujan Center will operate a world class user program in the service of the nation. Lujan Center scientists will be recognized for their leadership and innovation in neutron scattering.
Lujan Center at LANSCE
The Lujan Center is one of five user facilities supported by the LANSCE accelerator which is stewarded by NNSA. Together these instruments provide capability for basic and applied neutron science relevant to academia, national security and industry.
Lujan Center User Capabilities
The Lujan Center instruments operate in time of flight mode receiving neutrons from a tungsten spallation target. Four moderators provide epi-thermal, thermal and cold neutrons to specialized beamlines. The facility operates for a total of 3,000 hours per year. At the core of the Lujan Center is a 20Hz spallation neutron target and the LANSCE proton accelerator, which operates at an energy of 800 MeV with typical beam currents of 100 – 125 µA. The Lujan Center's highly optimized tungsten spallation target provides a high peak flux with a broad wavelength bandwidth per frame. Two liquid hydrogen moderators provide high intensity cold neutron beams ideally suited for nuclear physics, reflectometry, inelastic scattering and small angle scattering. Water moderators provide thermal neutrons for neutron imaging, nuclear physics and diffraction beamlines. In addition, because of its low repetition rate, long wavelength neutrons can be used without significant frame overlap allowing the collection of data over a broad range of time constants and length scales, ideally suited for Total scattering and diffraction studies.The Lujan Center offers access to a large variety of specialized sample environments, including low temperatures down to 40mK, magnetic fields up to 7T, high temperature furnaces up to 2400C and uniaxial stress (F_max=250kN) and fluid as well as anvil cell pressure capabilities (30GPa-2000K).
Lujan Center: Material Science FY17 Call for Proposals
Proposal Submission: https://www.lanl.gov/orgs/lansce/
lansce.lanl.gov
lansce.lanl.gov/lujan
Read the Lujan Center call for proposals.
The Lujan Center utilizes 800 MeV protons, provided by the LANSCE accelerator facility at Los Alamos National Laboratory (LANL), to produce intense pulses of moderated thermal or cold neutrons mainly in support of stockpile stewardship programs and other national security missions that benefit from the unique capabilities of this neutron source. For an overview of the Lujan Center, visit: lansce.lanl.gov/lujan
Instrument Suite
Crystallography: HIPPO, PCS
Engineering and Strain: HIPPO, SMARTS
Disordered Materials: HIPPO
Large Scale Structures: ASTERIX
Magnetism: ASTERIX, HIPPO
Biology: PCS,
Neutron Imaging: HIPPO, SMARTS
Nuclear Science and Technology: DANCE, FP5, FP12
The neutron scattering capability is augmented by the Neutron Imaging capability that can be used on SMARTS, and HIPPO as well as a fully equipped chemical preparation laboratory (including deuteration capability), clean room, biolab and various analytical tools including an X-ray lab.
Sample environment and ancillary equipment
For general questions, please contact the Lujan Center Sample Environments responsible:
Joan Elizabeth Siewenie | siewenie@lanl.gov | 505.667.8755
Science Highlights
User research at the Lujan Center is focused in four science thrust areas. Each has a contact person who is available to discuss proposed experiments and to provide advice on the appropriate instrument and instrument scientist, available sample environments, and other details for planned experiments. New users especially are urged to contact the appropriate instrument scientist before submitting a proposal.
New Evidence to Aid Search for Charge 'Stripes' in Superconductors
Findings identify signature that will help scientists investigate and understand materials that carry current with no resistance
"The scientists ground up crystals of the test material into a fine powder and placed samples of it in line with a beam of neutrons at the Los Alamos Neutron Scattering Center at Los Alamos National Laboratory. Similar to the way light reflecting off an object enters your eyes to create an image, the neutron beams diffracted by the crystals' atoms yield information about the positions of the atoms. The scientists used that information to infer the material's electronic structure, and repeated the experiment at gradually warmer temperatures."
The Lujan Center: Science & People
In This Issue:• Olivier Gourdon: A crystallographer keen on showing off the revealing properties of neutrons•Seeking design rules for efficient lighting sources• Rate-dependent deformation mechanisms in beryllium• Improved understanding of a semiconductor used in infrared detectors• Mike Fitzsimmons elected NNSA Fellow• Pressure tuning: a new approach for making zero thermal expansion materials• Neutron scattering enables structural characterization of multifunctional materials• Julian Chen, new Protein Crystallography Station lead scientist, carving out elite niche: neutron studies of membrane proteins |
