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LANSCE Update for BESAC

LANSCE Update for BESAC. February 26, 2002 Paul W. Lisowski LANSCE Division Leader Los Alamos National Laboratory. Outline. LANSCE Overview LANSCE Governance/Management CY2001 Run Cycle Outage progress Summary.

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LANSCE Update for BESAC

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  1. LANSCE Update for BESAC February 26, 2002 Paul W. Lisowski LANSCE Division Leader Los Alamos National Laboratory

  2. Outline • LANSCE Overview • LANSCE Governance/Management • CY2001 Run Cycle • Outage progress • Summary

  3. LANSCE is a Unique Multidisciplinary Facility for Science and Technology - User Facility Areas Lujan Neutron Scattering Center Weapons Neutron Research Isotope Production Proton Radiography 800 MeV Proton Linear Accelerator UCN Experiment

  4. Provide a single Steward of this facility Develop an adequately-funded, actionable implementation plan for FY2002, sustainable over the period 2002-2008 Specify a ramp-up schedule for LANSCE/Lujan to full functional status by FY 2003 Increase the LANSCE/Lujan user base to ~1000 by 2006 Responsibility assigned to NNSA, Executive Council established Completed externally and internally peer-reviewed bottom-up cost estimate for LANSCE Completed as part of cost estimate. Funding increment of $10M in 2003 LANSCE operations budget planned Began process with successful CY2001 operating cycle - 270 user visits, 150 unique users We are working to follow the November 2000 BESAC review recommendations Recommendation Action

  5. Los Alamos goal: deliver neutrons and protons safely and reliably for All LANSCE users The LANSCE Mission: Deliver neutrons and protons safely and reliably for all LANSCE users. The Los Alamos Neutron Science Center (LANSCE) is defined by its high current 800-MeV linear accelerator and its capability of delivering beam to a variety of targets for different scientific purposes. These include the neutron production targets of the Lujan Neutron Scattering Center and the Weapons Neutron Research (WNR) facility, an isotope production facility (now under construction), and areas for proton radiography research and for fundamental nuclear science. The complexity of targets and programming sponsors makes LANSCE a challenging facility to manage. The institutional goal is to create a world-class national user facility for all program sponsors and all users. LANL Institutional Goal, http://int.lanl.gov/goals/lansce.shtml

  6. Isotope Production Facility (construction) H+ Source Drift Tube Linear Accelerator H- Source Line D Lujan Center 9 10 11A/B ER-1 7 12 8 6 13 Target 1 14 15 4 3 16 1 2 ER-2 5 Los Alamos is meeting its commitment to NNSA, SC, and NE for a safe, reliable national user facility Area C Line B Ultra-Cold Neutrons (future) Proton Radiography Area A (inactive) Side-Coupled Linear Accelerator “I want to state my personal commitment to the success of LANSCE and its national user program.” LANL Director John Browne in a letter to Patricia Dehmer and David Crandall 1/4/2001 “…LANSCE will manage each of its major capabilities -- proton radiography, Lujan Center, and WNR - as national user facilities.” James Van Fleet, Director, Office of Defense Science letter to LANSCE Director, 11/28/2001“…LANSCE is and will be the flagship of Los Alamos and shall be supported as such.” The Los Alamos Senior Executive Team, December 17-19, 2001 PSR Target 2 120L 90R 60R Target 4 90L 30R Weapons Neutron Research Facility 15R 15L 30L

  7. LANSCE met the goals of reliable, predictable operations in CY2001 at 55 microamperes and a successful user program • Proton Radiography • 94% availability for 411 scheduled hours, 466 total hours (20% more than scheduled) • 100% beam delivery during dynamic events • Very highly successful experimental program: 36 shots • Weapons Neutron Research • 92% availability for 2501 scheduled hours • Very highly successful user program: 300 user visits, 36 experiments • Lujan Center • 91% availability for 2,734 scheduled hours • Beam down times of longer than 8 hours, was outstanding at 1.7% • Beam current at 55 microamperes due to target/moderator problems • Very highly successful user program: 270 user visits, 113 experiments

  8. Lujan scientists accomplished much in the CY2001 Run Cycle • Served over 270 users, performed over 113 user experiments with 91% beam delivery reliability and over 95% instrument availability. • Commissioned five new scattering instruments and one nuclear science instrument. • SMARTS • HIPPO • PROTEIN • PHAROS (rebuilt) • ASTERIX • DANCE • Developed and implemented a new generation of data acquisition and chopper control systems. • Actinide Basis for Interim Operations approved by DOE; initiated Plutonium experiments. Lujan Center Materials Science Plutonium Science Characterizing Materials

  9. Scheduled beam availability for the Lujan Center was unprecedented at 91.4% Minutes Current (mA) July December • Beam current limited to 55 mA because of target reflector cooling problems

  10. HIPPO, located on flight path #4, is a high-intensity powder diffractometer optimized for texture measurements 1384 detectors 4.6 m2 Top of HIPPO, looking toward the beam stop, shows the crane, door, and DAQ racks Bob Von Dreele - LANSCE Kristin Bennett - LANSCE Rudy Wenk - UCB Inside the cave, showing detector panels, frame, and sample chamber

  11. SMARTS, located on flight path #2, is a powder diffractometer for materials engineering applications Load frame and furnace set - tension or compression up to 40,000 lbs and temperature up to 1500oC Mark Bourke - LANL-MST David Dunand - Northwestern Ersan Ustundag - CalTech Translator is located in a pit in the cave floor and has a capacity of 3000 lbs

  12. The Protein Crystallography instrument, located on flight path #15 will be used for biological applications Benno Schoenborn - LANL-B Paul Langan - LANL-B Gail Greene - LANL-B Veljko Radeka - BNL Experimental cave and beam stop BNL 120º 2-D thermal neutron detector

  13. A Detector for Advanced Neutron Capture Experiments - DANCE is being installed at Lujan on Flight Path #14 • Neutron capture studies on unstable nuclei for stockpile stewardship and nuclear astrophysics • 4 gamma ray detector - 160 BaF2 scintillators • Crystal fabrication about 10 per month, complete array in fall, 2002 • First beam to flight path on Sept 17, 2001 • Partial DANCE array has taken data for (n,) experiments on: 171Tm, 234U, 242Pu, and 151Sm DANCE Detector Support Flight Path 14, Construction complete

  14. A sampling of the science done by Lujan scientists this year • High temperature measurement of tool cermet under load reveals partitioning of stress that leads to creep. • Protein x-ray crystallography from powder samples, once thought to be impossible, promises rapid advances in proteomics. Work wins cover of Acta Crystallographica D (December 2001). • New small-angle scattering studies of high explosives leads to new understanding of segregation of plasticizers in HE aging. • Reflectivity study of lung surfactants shows why and how certain peptides affect aggregation; important news for premature newborns and populations under respirable bio-threat agents. • Polarized-neutron study of magnetic antidots measures magnetic domain structure factor in high performance disk materials from two-micron lattice. • New fluidic high pressure systems commissioned allow hydrostatic pressure studies to 8 Mbar. • First neutron scattering studies of methane hydrates at high pressure provide insights into formation of this almost limitless supply of energy from sea beds. • Zeolite-rho materials exhibit high chemisorption capacity for hydrocarbons as revealed by neutron spectroscopy. • New studies of stresses and texture resulting from Be joining processes provide needed data for weapons production.

  15. A Lujan Scientist showed that protein structure can be solved by scattering from powders This breakthrough overcomes the need to grow large single crystals of proteins—often lengthy, sometimes impossible. Success with synchrotron radiation now being attempted with neutrons. Bob Von Dreele, new Fellow of the Mineralogical Society of America

  16. 250.0 User Visits Unique Users 200.0 Experiments Run 150.0 100.0 50.0 0.0 CY1997 CY1998 CY1999 CY2000 CY2001 We made major progress towards establishing a significant user base performing science at Lujan LANSCE User Program Statistics 270 Number

  17. 2001 Lujan Center run statistics by instrument

  18. 2001 Lujan Center user demographics By Affiliation By Age (30 not reporting)

  19. 2001 Lujan Center proposal statistics Funding Agency Discipline

  20. Snapshot comparison1997 vs. 2001 Lujan Center run cycle

  21. 2001 user satisfaction survey results for Lujan Center -- questions 1-12 Response rate as of January 21, 2002: 29% by proposal; 29% by unique user *Negative/positive (yes/no) questions.

  22. A well-planned outage started in December, 2001 and the user program is planned to restart in July, 2002 • The outage has a detailed plan and resource-loaded schedule of 2155 prioritized activities • Major Tasks are : • Lujan Replacement • Target Moderator system • IPF Beam Line Components • High priority accelerator and facility maintenance and connection of new cooling tower • Switchyard Kicker • Experimental area activities • Lower priority accelerator and facility maintenance, including demolition of three old cooling towers

  23. Proton Beam Beam window and guard ring Service Connections LH2 Moderator Upper Lead Reflector Beam Diagnostic Upper tungsten target Beryllium Reflectors Lower flight path liners and water moderators Lower Lead Reflector Work is underway to replace the Lujan Target Moderator Reflector System during the FY2002 outage • Neutronics design complete • Mechanical design substantially complete • Procurements underway

  24. Area C Line B Ultra-Cold Neutrons (future) Isotope Production Facility (construction) Proton Radiography H+ Source Area A (inactive) Side-Coupled Linear Accelerator Drift Tube Linear Accelerator H- Source Line D Lujan Center PSR 9 10 11A/B ER-1 7 12 8 6 13 Target 1 14 Target 2 15 4 3 16 1 120L 90R 2 ER-2 5 60R Target 4 90L 30R Weapons Neutron Research Facility 15R 15L 30L Beam delivery to the user facilities will be simplified by installation of a switchyard kicker in the 2003 outage

  25. 2002 LANSCE proposal cycle calendar • Call for Proposals Issued February 4 • Proposals Due March 8 • Materials Program Advisory April 22-23 • Committee Review Meeting • Nuclear Physics Program Advisory April 24-26 • Committee Review Meeting • Schedule Published on Web June 1 • User Program Start July 1 • (tentative)

  26. May June July August September October November December Turn-on Contingency For Turn-on 1L Maintenance Lujan/ WNR User Program Prad, NRS, …. Reserve or Contingency 2002 Outage LANSCE will use a standard 28-day operating cycle with contingency in 2002 based on the successful 2001 cycle DRAFT LANSCE Operating Schedule for CY2001 • Incorporated formal change control and contingency allocation process

  27. Summary • The priority for LANSCE within Los Alamos has been strongly supported by Los Alamos Senior Management • LANSCE governance model is in place and working • With increased planning and a heroic effort from the staff, LANSCE improved the reliability and carried out a successful scientific program • Annual outage is underway • No unexpected maintenance or repair issues to date • Lujan Target/Moderator/Reflector system replacement and kicker projects are underway • Proposal call completed • User program restart scheduled for July, 2002

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