LANSCE Update for BESAC

February 26, 2002

Paul W. LisowskiLANSCE Division Leader

Los Alamos National Laboratory

Outline

• LANSCE Overview

• LANSCE Governance/Management

• CY2001 Run Cycle

• Outage progress

• Summary

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

• 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

30L15L

15R

30R

60R

90R

Target 2

120L

Weapons NeutronResearch Facility

Area CLine BUltra-Cold Neutrons(future)

Proton Radiography

Area A (inactive)

Lujan Center

ER-1

Target 1

34

5

86

7

ER-2

9

1011A/B

12

13

1

2

14

1516

H+ Source

H- Source

Isotope ProductionFacility (construction)

Drift Tube Linear

AcceleratorLine D

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

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 CenterMaterials 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

Min

ute

s

Cu

rren

t (

A)

Inside the cave, showing detector panels, frame, and sample chamber

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 - LANSCEKristin Bennett - LANSCERudy Wenk - UCB

1384 detectors4.6 m2

Translator is located in a pit in the cave floor

and has a capacity of 3000 lbs

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

Mark Bourke - LANL-MSTDavid Dunand - NorthwesternErsan Ustundag - CalTech

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

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-BPaul Langan - LANL-BGail Greene - LANL-BVeljko 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

0.0

50.0

100.0

150.0

200.0

250.0

CY1997 CY1998 CY1999 CY2000 CY2001

LANSCE User Program Statistics

User Visits

Unique Users

Experiments Run

Num

ber

270

0

50

100

150

200

250

FDS HIPD LQD NPD SCD SPEAR

Days Requested

Days Scheduled

Days Received

Proposals Received

Proposals Completed

Defense DaysRequestedDefense DaysReceivedBasic Requested

Basic Received

Days delivered to Lujan = 104

2001 Lujan Center run statistics by instrument

3%

23%

35%

26%

8%5%

<20

20-29

30-39

40-49

50-59

60-69

55%27%

10%

4%

1%

3%Academia

LANL

DOE Lab

Industry

Other US Gov't

Foreign Lab

2001 Lujan Center user demographics

By Age (30 not reporting)

By Affiliation

2%1%

1%

12%4%

7%

16%

9%25%

16%

5%

2%

DOE/BES

DOE/DP

DOE/Other

DoD

NSF

NIH

NASA

Other US Govt

Industry

Foreign

Other

Not Reported

32%

10%

17%

10%

2%

6%

4%

6%1% 5% 1%

6%

Materials

Physics

Chemistry

Polymers

Medical

Bio & Life Sciences

Earth

Environmental

Engineering

Instrumentation

Defense-related materials

Not Reported

2001 Lujan Center proposal statistics

Funding Agency

Discipline

164

126

156

136

50

102.7

85.8

270

150

166

113

74

114

104

0 50 100 150 200 250 300 350

User Visits

Unique User Visits

Proposals Rcd

Proposals Run

Users Age <40

Lujan Days Scheduled

Lujan Days Delivered 2001

1997

Snapshot comparison1997 vs. 2001 Lujan Center run cycle

0

2

4

3

8

1

4

2

3

0

13

16

37

11

23

25

23

26

15

39

19

14

44

2624

25

14

10

17

14

25

19

21

5

2

1(1) Admin Support

(2) Check-in Procedures

(3) Training*

(4) Instrument/FP Readiness

(5) Beam Reliability

(6) Lost time Other Than Beam Delivery

(7) Sample & Support Labs

(8) Sample Environment Equip

(9) Instrument/FP User-friendliness

(10) Time Allocated*

(11) Facilities for Data Analysis

(12) Sending Data

(19) Return/Recommend*

UnsatisfactorySatisfactoryExcellent

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

• 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

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

Beam window and guard ring

Beryllium Reflectors

Upper Lead Reflector

Lower flight path liners and water moderators

Service Connections

Beam Diagnostic

Lower Lead Reflector

LH2 Moderator

Upper tungsten target

Proton Beam

• 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

Target 4

90L

30L15L

15R

30R

60R

90R

Target 2

120L

Weapons NeutronResearch Facility

Area C Line BUltra-Cold Neutrons(future)

Proton Radiography

Area A (inactive)

Lujan Center

ER-1

Target 1

34

5

86

7

ER-2

9

1011A/B

12

13

1

2

14

1516

H+ Source

H- Source

Isotope ProductionFacility (construction)

Drift Tube Linear

AcceleratorLine D

Side-Coupled Linear Accelerator

PSR

•Call for Proposals Issued February 4

•Proposals Due March 8

•Materials Program Advisory April 22-23Committee Review Meeting

•Nuclear Physics Program Advisory April 24-26Committee 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

May June July August September October November December

Turn-on

ContingencyFor Turn-on

1L Maintenance

Lujan/ WNR User Program

Prad, NRS, ….

Reserve orContingency

2002 Outage

• 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