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Ithaca, NY., U.S.A. 



CORNELL ELECTRON STORAGE RING (CESR) 



Floyd R. Newman Laboratory for Nuclear Studies 



Cornell University 



"Big Science" Descriptor : High-energy physics 



Description of Facility/Instrument : CESR Is an 8 GeV x 8 GeV electron- 

 positron colliding beam storage ring facility. It has two inter- 

 action regions. In one, the focus of research has been the study 

 of leptons and photons using a segmented sodium iodide detector 

 (CUSB). The other region contains a large magnetic general pur- 

 pose detector (CLEO) with which almost everything known about 

 the bottom quark, has been learned. 



Date of Construction : 1977-79 (operational since 1979). 



Construction Cost : Original : $20.7 million 



1984 $$ : $28 million 



Present International Cooperation 



Nationality(s) of Ownership : U.S. 

 Nationality(s) of Operational Funding : U.S. 

 Natlonality(s) of Management Staff ; U.S. 



Natlonallty(s) of Researchers : Mainly U.S. (105 scientists from 11 

 institutions) . 



Potential for Future International Cooperation : The Cornell supercon- 

 ducting radio-frequency cavity technology has been shared through 

 collaborations with European and Japanese laboratories. High 

 energy physics has led the way with a long tradition of active 

 and Intimate international cooperation. 



Other Information : A major comprehensive improvement plan has been 



Initiated to be completed in FY87 which incorporates storage ring 

 and detector upgrades. The upgrades will provide the capability 

 to perform the most precise experiments possible in the CESR 

 energy range. The estimated cost of these improvements is about 

 $36 million. The facility will continue to be open to national 

 and international researchers on the basis of scientific merit of 

 the experiments proposed. 



