The Cold Neutron Chopper Spectrometer

1. The Cold Neutron Chopper Spectrometer Paul Sokol, Penn State University -- PI M. Aronson (Michigan), S.-H. Chen(MIT), R. Dimeo(NIST), H. Strauss(Berkely), H. Taub(Missouri)

2. Status Report • Technical, Cost and Schedule Review -- Jan 2002 • Baseline Design • Realistic Budget • Installation Plans • Current Design Status • SNS Proposal—August 2002 • Construction Plans • SNS • IDT • Organization • Beam Time Allocation

3. Baseline Review • Comprehensive Review of all Instrument Details • Early in development • plans reasonably well developed • Extensive costing of installation • Budget is important • Instrument must be built within budget • Construction budget ~$9.7 M - Fixed!!! • Must have adequate contingency to ensure instrument is built

4. Baseline Budget (Jan 02)

5. Build the highest performance spectrometer possible for the money available Review Criteria Cost Obvious - $9.7 M • Data Rate – Flux on Sample x • No. of Detectors • Sample Environment • Reliability • Maintainability • Analizability Performance Neutron Design – performance and resolution of instrument Lechner, Copley, Carpenter, Cook, Neuman Conventional Design – Engineering effort for flight paths Laman, Brandt, Brocker, Linzell Components – Choppers, Detectors, Electronics, etc. Broholm, Adams, Cook, Santadonato Installation – Building, assembly at ORNL Gallagher, Bohringer

6. Incident Guide design Curved guide instead of bender Fixed final funnel No Optics Carousel Savings $700K Choppers High speed Pulse Shaping – Fermi Energy Selection – Double Disc – Al Low Speed Frame Overlap Only No T0 chopper – Future option Savings $150K Final Flight Path Evaluating Shorter Flight Path Design Outsource Some Effort Building Final Flight Path SNS/IDT demarcation Inside/Outside building Safety Costs Consistent contingency Common Cost Basis Results

7. Incident Beamline m=2 m=2.5 m=3.5 m=1 m=2.5 m=3.5 Design Reports – Mid April Review by SAC

8. Choppers • Choppers • Pulse Shaping • Fermi @ 6.5 m • Energy Selection • Disc @ 37.8 m • Frame overlap • Disc @ 7.5m and 33m + Fermi Chopper + Frame Overlap Choppers Transmission Dual Disc Transmission Flux From Moderator Transmission of Chopper Configuration Design Reports – Mid April Review by SAC

9. Engineering • Design Firms • Burns and Roe ENR #40 • APT Project • DOE – Advanced Technology • Bid on SNS • Gannett Fleming ENR #47 • Laboratories and nanotechnolgy facilities • Pennoni Associates ENR #152 • Full service ME, EE, CE and geotech • Applied Research Lab - PSU • Instrument Design • SNS • Incident Shielding • Shared Design • Highly integrated with neighboring instruments • Background issues • IDT • Guide • Choppers – Specification • Building • Final Flight Path Request for Proposal – Mid April Joint review by IDT and SNS

10. Beam Time Allocation • Outside Users – 40% • IDT/SNS - 60% • Roughly 50-50 split (over 10 yrs) • Construction versus Operation • IDT Time • No Fixed Allocation for members • Reviewed Proposals • Program Continuity • New Science • Rapid Access • Instrument Scientist (as part of IDT) • SNS Time • General User time • Instrument Scientist Support (primary)

11. Dr. Helen Kerch Program Officer IDT and General Members SNS/EFAC Aronson, Chen, Dimeo, Taub, Strauss Executive Committee Paul E. Sokol Principal Investigator Review Committees Scientific Review Committee Conventional Facilities Review Committee Paul E. Sokol (acting) Scientific Officer To be Named Safety Officer Paul E. Sokol (acting) Development Officer Niki L. Page Financial Officer To be Named ORNL/SNS/IDT Liaison Kent Crawford ANL/IDT Liaison To be Named Engineering Firm To be Named PSU Staff/Support Larry Kurek ANL Finance To be Named ORNL Finance Robert Meyer ECOS Research SNS Instrument Systems Group ANL Instrument Systems Group Engineering Staff PSU Shops SNS Conventional Facilities Group Architect Staff SNS Installation Group Costing Staff