1. View from the NSF: Later Years J. Whitmore (EPP-PNA) M. Pripstein (LHC) M. Goldberg, J. Reidy (EPP) LEPP – CLEO CESR Symposium at Cornell, May 31, 2008

2. CESR-CLEO Symposium May 31, 2008 2 Topics After Dave B. Charm-Tau ERL What’s next?

3. CESR-CLEO Symposium May 31, 2008 3 After D. Berley….. To follow on where Dave left: After the B-factory came on line in Oct. 1999, CESR-CLEO made very important contributions to Tau-Charm physics (more later) A few years ago (2004?), with the conclusion of its 20-year program of studies of the decays and spectroscopy of the bottom quark, the CLEO Collaboration turned its attention to the study of charm and charmonium. The National Science Foundation supported converting the Cornell Electron Storage Ring to CESR-c, including installing wiggler magnets to enhance luminosity in the charm threshold region “It is remarkable that more than 30 years after the first discovery, charmonium continues to yield new information and new challenges to elementary-particle physics, thanks to improvements in collider luminosities and detector capabilities.” (CERN Courier June 2006)

4. CESR-CLEO Symposium May 31, 2008 4 2002 Review - I Report on the Site Visit to Wilson Laboratory for Elementary Particle Physics at Cornell University March 5-6, 2002 Executive Summary: The panel judges that 1. The proposed research program is of the highest quality and is expected to lead to significant advances in our understanding of weak interactions and lattice QCD; 2. The proposed upgrades to existing facilities are feasible, limited in scope and cost, and the schedule is well understood. In fact, the existing facilities are state-of­the-art and extremely well suited to execute the proposed program in the five-year time frame. 3. The expertise in superconducting RF technology, the operation of storage rings, and the current effort to build and operate wiggler magnets are examples of the activities needed for the development of future accelerators, such as the Linear Collider. The Cornell group is expected to become a major intellectual player in the planning, construction, and operation of this very large international facility. 4. The LEPP has an excellent record in training particle and accelerator physicists. The proposed master‘s degree program in accelerator physics would be a great addition.

5. CESR-CLEO Symposium May 31, 2008 5 2002 Review - II Report on the Site Visit to Wilson Laboratory, Cornell University Review of the Energy Recovery Linac (ERL) Proposal March 7-8, 2002 Executive Summary: The committee strongly encourages NSF to support the ERL Phase I program. We believe that this proposal is forward looking and directed to the need for new and enabling technology that brings the possibility of fundamentally different parameters to next generation light sources.

6. CESR-CLEO Symposium May 31, 2008 6 Oversight-Reviews We do lots of oversight!

7. CESR-CLEO Symposium May 31, 2008 7 2006 Review We were impressed by both the quality and quantity of the physics output of the CLEO-c program and we strongly endorse the proposal to continue running until March 31, 2008. The SRF work at Cornell has a tremendous potential leverage on the cost of the ILC accelerating cavities, as well as on enabling technologies that would minimize the project risks. The CesrTF has some unique advantages as a test facility for ILC storage rings LEPP has an outstanding record of contributions to accelerator physics and technology and training expert accelerator scientists and engineers. The laboratory represents a national resource for accelerator science and technology. SRF cavity R&D at LEPP directly benefits the ILC project. The Cornell Laboratory for Elementary Particle Physics has an excellent record of developing programs of education and enrichment for students in K-12. Report of the Site Review of the Cornell Laboratory for Elementary Particle Physics April 17-18, 2006

8. CESR-CLEO Symposium May 31, 2008 8 Changes

9. CESR-CLEO Symposium May 31, 2008 9 2007 Review NSF/DOE Review of the Cesr Conversion Proposal (July 2007) Executive Summary The Panel believes that the R&D described in the CesrTA Proposal is important to mitigate risk in the ILC positron damping ring design and should be carried out. The Panel feels that Cornell’s proposal is the only one consistent with gaining the necessary information on a timescale compatible with the ILC schedule for production of an Engineering Design Report (EDR) in 2010. CesrTA also appears to be the most cost-effective option available to obtain the required data. The Cornell group’s scientific and technical knowledge is well known, and their record of achievement in accelerator physics is outstanding. We believe they will achieve the main goals of the CesrTA project, thus making important contributions to the development of the ILC, and to the understanding of how the e-cloud and other effects limit positron storage ring performance.

10. CESR-CLEO Symposium May 31, 2008 10 Conclusions We would like to acknowledge the role of our partners at DOE in: Supporting many groups active in CLEO Co-funding the future accelerator activities now underway here at Cornell In Conclusion: Congratulations from NSF to the entire CLEO collaboration on your past achievements We are looking forward to your next accomplishments