LANSCE Update for BESAC February 26, 2002 Paul W. Lisowski LANSCE Division Leader Los Alamos National Laboratory
Jan 13, 2016
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