O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY The Spallation Neutron Source Project: Update T. E. Mason Oak Ridge National Laboratory Associate Laboratory Director for the SNS May 28, 2003 Arlington, VA BESAC

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY The Spallation Neutron Source The SNS will begin operation in 2006 At 1.4 MW it will be ~8x ISIS, the world’s leading pulsed spallation source The peak neutron flux will be ~20-100x ILL SNS will be the world’s leading facility for neutron scattering It will be a short drive from HFIR, a reactor source with a flux comparable to the ILL

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY SNS - Guiding Principles SNS will provide high availability, high reliability operation of the world’s most powerful pulsed neutron source (cf white paper) It will operate as a User Facility to support peer reviewed research on a Best-in-Class suite of instruments –Research conducted at SNS will be at the forefront of biology, chemistry, physics, materials science and engineering SNS will have the capability to advance the state of the art in spallation neutron source technology. This includes: –R&D in accelerators, target, and instruments to keep SNS at the forefront –Planned enhancement of SNS performance through upgrades of the complex and ongoing instrument development as part of the normal operating life of the facility

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY SNS 20-Year Plan SNS will evolve along the path envisaged in the Russell Panel specifications In twenty years it should be operating ~45 best-in-class instruments with two differently optimized target stations and a beam power in the 3-4 MW range The Power Upgrade and Long Wavelength Target Station should follow a sequence that meshes with deployment of the initial capability and national needs –This future depends on success with the present 1.4 MW, 1 Target Station SNS!

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Project Status The FY 2003 request was $225M, fully funded (rescission restored by supplemental) The FY 2004 request is $143M as expected Overall project design is 88% complete Overall the project is 61% complete (through March 2003) and within budget and schedule constraints $1.4B and June 2006 completion Contingency is adequate at ~20% ES&H performance outstanding >3 million hours without lost workday injury (combined hours worked for construction site and SNS/ORNL)

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Cost Baseline *Based on EAC and estimated costs and awards through 10/31/02. **Based on EAC and estimated costs and awards through 4/30/03.

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Project Cumulative CPI and SPI are Stable CPI/ SPI G G

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Major Accomplishments Since Nov Steel erection on CLO (Nov. 25) and Target Building (Jan. 27) Linac Tunnel 1000 MeV and Klystron BOD (Dec 18, Jan. 17) Front End Beam ready for DTL commissioning (Dec. 30) Integrated Cryomodule test with Low Level RF (March 1) HEBT Service Building and HEBT BOD (Mar. 28, Apr. 10) Start Linac Installation (Apr. 4) Start Target Installation (Apr. 11) RF into DTL Tank 3 (May 1)

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Steel Erection on CLO and Target Building

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Linac Tunnel 1000 MeV and Klystron BOD

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Re-Commissioning of FES Front End Systems commissioning and IPS milestone: Front End Beam available to DTL: DONE ! Ran 24/7 starting December 14, 2002; continued until Jan. 31, /14/02 20  sec/div

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Integrated Cryomodule Test with Low Level RF Figure1. Cavity amplitude and phase with feedforward & feedback control. 10MV/m, 1.2 msec, 60 Hz. 1%1% Figure 2. Magnified version of Figure 1

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY HEBT Service Building and HEBT BOD

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Start Linac Installation

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Start Target Installation

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY RF into DTL Tank 3

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Operations Planning We are continuing to develop plans for operations –Major activity over the past 9-12 months was discussions with the ATLC (Atomic Trades and Labor Council) on crafts personnel for operations (construction is a separate issue covered under Project Labor Agreement and Davis-Bacon determination) –Through an Interest Based Bargaining process we have reached agreement that provides for  A dedicated crafts core team that will service SNS facilities from the lab Facilities and Operations Directorate (for traditional craft designations)  A new multiskilled Research Mechanic that will allow for integration with ASD workforce and provide flexibility needed to support accelerator (and other technical) operations –Increased accelerator operator staffing during pre-operations by nine FTE years

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY 16 Instruments Now Formally Approved

O AK R IDGE N ATIONAL L ABORATORY U. S. D EPARTMENT OF E NERGY Summary Although much work remains we are on track to complete the world’s most powerful facility for studies of the structure and dynamics of materials safely, on time, and within the approved budget Due to improvements in technology and ongoing value engineering, the facility will deliver higher beam power, better performing instruments, and more laboratory and office space for staff and users than initially thought possible at the time the project was approved We are adapting our plans to deal with issues as they arise, achieving key milestones and recovering from difficulties