# Presentation: 669712

## LANSCE Update for BESAC 

**February 26, 2002**
**Paul W. Lisowski**
**LANSCE Division Leader**
**Los Alamos National Laboratory**

## 
LANSCE Overview
LANSCE Governance/Management 
CY2001 Run Cycle
Outage progress
Summary

**LANSCE Overview**
**LANSCE Governance/Management **
**CY2001 Run Cycle**
**Outage progress**
**Summary**

## LANSCE is a Unique Multidisciplinary Facility for Science and Technology - User Facility Areas

**Lujan  Neutron Scattering Center**

**Weapons Neutron Research**

**Proton Radiography**

**Isotope Production**

**800 MeV Proton Linear Accelerator**

**LANSCE is a Unique Multidisciplinary Facility for Science and Technology - ****User Facility Areas**

**UCN Experiment**

## We are working to follow the November 2000 BESAC review recommendations

**We are working to follow the November 2000 BESAC review recommendations**

**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**

**Recommendation**

**Action**

## 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*

## Los Alamos is meeting its commitment to NNSA, SC, and NE for a safe, reliable national user facility 

**Target 4**

**90L**

**30L**

**15L**

**15R**

**30R**

**60R**

**90R**

**Target 2**

**120L**

**Weapons Neutron**
**Research Facility**

**Area C**

**Line B**
**Ultra-Cold Neutrons**
**(future)**

**Proton Radiography**

**Area A (inactive)**

**Side-Coupled  Linear Accelerator**

**PSR**

**“****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 ******	***

## 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

**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**

**LANSCE met the goals of *****reliable, predictable operations***** in CY2001 at 55 microamperes *****and a successful user program***

## 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**

- Characterizing  Materials

- Plutonium Science

## Scheduled beam availability for the Lujan Center was unprecedented at 91.4%

**Beam current limited to 55 ********A because of target reflector cooling problems**

**July**

**December**

**Minutes**

**Current (********A)**

## HIPPO, located on flight path #4, is a high-intensity powder diffractometer optimized for texture measurements

**HIPPO, located on flight path #4, is a high-intensity powder diffractometer optimized for texture measurements**

*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

- 1384  detectors
- 4.6 m2

## SMARTS, located on flight path #2, is a powder diffractometer  for materials engineering applications

**SMARTS, located on flight path #2, is a powder diffractometer  for materials engineering applications**

- Mark Bourke - LANL-MST
- David Dunand - Northwestern
- Ersan Ustundag - CalTech

*Load frame and furnace set - tension or compression up to 40,000 lbs and temperature up to 1500**o**C*

## The Protein Crystallography instrument, located on flight path #15 will be used for biological applications

**The Protein Crystallography instrument, located on flight path #15 will be used for biological applications**

*Experimental cave and beam stop*

*BNL 120o 2-D thermal neutron detector*

- Benno Schoenborn - LANL-B
- Paul Langan - LANL-B
- Gail Greene - LANL-B
- Veljko Radeka - BNL

## A Detector for Advanced Neutron Capture Experiments - DANCE  is being installed at Lujan on Flight Path #14

- DANCE Detector Support

-   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

- Flight Path 14,  Construction complete

## 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.**

## A Lujan Scientist showed that protein structure can be solved by scattering from powders

**Bob Von Dreele, new Fellow of the Mineralogical Society of America**

***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.***

## We made major progress towards establishing a significant user base performing science at Lujan

- LANSCE User Program Statistics

- Number

- 270

## 2001 Lujan Center run statistics by instrument

**2001 Lujan Center run statistics by instrument**

## 2001 Lujan Center user demographics

**2001 Lujan Center user demographics**

- By Age (30 not reporting)

- By Affiliation

## 2001 Lujan Center proposal statistics

**2001 Lujan Center proposal statistics**

- Funding Agency

- Discipline

## Snapshot comparison1997 vs. 2001 Lujan Center run cycle

**Snapshot comparison****1997 vs. 2001 Lujan Center run cycle**

## 2001 user satisfaction survey results for Lujan Center -- questions 1-12

**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.**

## A well-planned outage started in December, 2001 and the user program is planned to restart in July, 2002

**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

**Notes:**
Optical Biosensor Detects Biological Toxins and Infectious Agents

Toxins (poisons produced by living organisms) and disease-causing organisms such as viruses work by binding to specific receptors on the surface of an affected cell. Binding causes the receptors to aggregate, allowing the toxin or invading virus to enter the cell. 

Our Optical Biosensor uses optically tagged natural receptors embedded in a synthetic cell membrane to mimic a natural chain of events. When a target protein binds, the receptors in the cell membrane are pulled into a cluster by the toxin’s binding sites (shown for cholera toxin in red). The close proximity of the receptors, which are normally further apart, triggers an energy transfer leading to a fluorescent response.

## Work is underway to replace the Lujan Target Moderator Reflector System during the FY2002 outage

**Neutronics design complete**
**Mechanical design substantially complete**
**Procurements underway**

## Beam delivery to the user facilities will be simplified by installation of a switchyard kicker in the 2003 outage

## 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)**

**2002 LANSCE proposal cycle calendar**

## LANSCE will use a standard 28-day operating cycle with contingency in 2002 based on the successful 2001 cycle

**Incorporated formal change control and contingency allocation process**

- DRAFT LANSCE Operating Schedule for CY2001

## 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**